Age Owner Branch data TLA Line data Source code
1 : : /*-------------------------------------------------------------------------
2 : : *
3 : : * subscriptioncmds.c
4 : : * subscription catalog manipulation functions
5 : : *
6 : : * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
7 : : * Portions Copyright (c) 1994, Regents of the University of California
8 : : *
9 : : * IDENTIFICATION
10 : : * src/backend/commands/subscriptioncmds.c
11 : : *
12 : : *-------------------------------------------------------------------------
13 : : */
14 : :
15 : : #include "postgres.h"
16 : :
17 : : #include "access/commit_ts.h"
18 : : #include "access/htup_details.h"
19 : : #include "access/table.h"
20 : : #include "access/twophase.h"
21 : : #include "access/xact.h"
22 : : #include "catalog/catalog.h"
23 : : #include "catalog/dependency.h"
24 : : #include "catalog/indexing.h"
25 : : #include "catalog/namespace.h"
26 : : #include "catalog/objectaccess.h"
27 : : #include "catalog/objectaddress.h"
28 : : #include "catalog/pg_authid_d.h"
29 : : #include "catalog/pg_database_d.h"
30 : : #include "catalog/pg_foreign_server.h"
31 : : #include "catalog/pg_namespace.h"
32 : : #include "catalog/pg_subscription.h"
33 : : #include "catalog/pg_subscription_rel.h"
34 : : #include "catalog/pg_type.h"
35 : : #include "catalog/pg_user_mapping.h"
36 : : #include "commands/defrem.h"
37 : : #include "commands/event_trigger.h"
38 : : #include "commands/subscriptioncmds.h"
39 : : #include "commands/tablecmds.h"
40 : : #include "executor/executor.h"
41 : : #include "foreign/foreign.h"
42 : : #include "miscadmin.h"
43 : : #include "nodes/makefuncs.h"
44 : : #include "pgstat.h"
45 : : #include "replication/logicallauncher.h"
46 : : #include "replication/logicalworker.h"
47 : : #include "replication/origin.h"
48 : : #include "replication/slot.h"
49 : : #include "replication/walreceiver.h"
50 : : #include "replication/walsender.h"
51 : : #include "replication/worker_internal.h"
52 : : #include "storage/lmgr.h"
53 : : #include "storage/lock.h"
54 : : #include "utils/acl.h"
55 : : #include "utils/builtins.h"
56 : : #include "utils/guc.h"
57 : : #include "utils/injection_point.h"
58 : : #include "utils/lsyscache.h"
59 : : #include "utils/memutils.h"
60 : : #include "utils/pg_lsn.h"
61 : : #include "utils/syscache.h"
62 : :
63 : : /*
64 : : * Options that can be specified by the user in CREATE/ALTER SUBSCRIPTION
65 : : * command.
66 : : */
67 : : #define SUBOPT_CONNECT 0x00000001
68 : : #define SUBOPT_ENABLED 0x00000002
69 : : #define SUBOPT_CREATE_SLOT 0x00000004
70 : : #define SUBOPT_SLOT_NAME 0x00000008
71 : : #define SUBOPT_COPY_DATA 0x00000010
72 : : #define SUBOPT_SYNCHRONOUS_COMMIT 0x00000020
73 : : #define SUBOPT_REFRESH 0x00000040
74 : : #define SUBOPT_BINARY 0x00000080
75 : : #define SUBOPT_STREAMING 0x00000100
76 : : #define SUBOPT_TWOPHASE_COMMIT 0x00000200
77 : : #define SUBOPT_DISABLE_ON_ERR 0x00000400
78 : : #define SUBOPT_PASSWORD_REQUIRED 0x00000800
79 : : #define SUBOPT_RUN_AS_OWNER 0x00001000
80 : : #define SUBOPT_FAILOVER 0x00002000
81 : : #define SUBOPT_RETAIN_DEAD_TUPLES 0x00004000
82 : : #define SUBOPT_MAX_RETENTION_DURATION 0x00008000
83 : : #define SUBOPT_WAL_RECEIVER_TIMEOUT 0x00010000
84 : : #define SUBOPT_LSN 0x00020000
85 : : #define SUBOPT_ORIGIN 0x00040000
86 : : #define SUBOPT_CONFLICT_LOG_DEST 0x00080000
87 : :
88 : : /* check if the 'val' has 'bits' set */
89 : : #define IsSet(val, bits) (((val) & (bits)) == (bits))
90 : :
91 : : /*
92 : : * Structure to hold a bitmap representing the user-provided CREATE/ALTER
93 : : * SUBSCRIPTION command options and the parsed/default values of each of them.
94 : : */
95 : : typedef struct SubOpts
96 : : {
97 : : uint32 specified_opts;
98 : : char *slot_name;
99 : : char *synchronous_commit;
100 : : bool connect;
101 : : bool enabled;
102 : : bool create_slot;
103 : : bool copy_data;
104 : : bool refresh;
105 : : bool binary;
106 : : char streaming;
107 : : bool twophase;
108 : : bool disableonerr;
109 : : bool passwordrequired;
110 : : bool runasowner;
111 : : bool failover;
112 : : bool retaindeadtuples;
113 : : int32 maxretention;
114 : : char *origin;
115 : : ConflictLogDest conflictlogdest;
116 : : XLogRecPtr lsn;
117 : : char *wal_receiver_timeout;
118 : : } SubOpts;
119 : :
120 : : /*
121 : : * PublicationRelKind represents a relation included in a publication.
122 : : * It stores the schema-qualified relation name (rv) and its kind (relkind).
123 : : */
124 : : typedef struct PublicationRelKind
125 : : {
126 : : RangeVar *rv;
127 : : char relkind;
128 : : } PublicationRelKind;
129 : :
130 : : static List *fetch_relation_list(WalReceiverConn *wrconn, List *publications);
131 : : static void check_publications_origin_tables(WalReceiverConn *wrconn,
132 : : List *publications, bool copydata,
133 : : bool retain_dead_tuples,
134 : : char *origin,
135 : : Oid *subrel_local_oids,
136 : : int subrel_count, char *subname);
137 : : static void check_publications_origin_sequences(WalReceiverConn *wrconn,
138 : : List *publications,
139 : : bool copydata, char *origin,
140 : : Oid *subrel_local_oids,
141 : : int subrel_count,
142 : : char *subname);
143 : : static void check_duplicates_in_publist(List *publist, Datum *datums);
144 : : static List *merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname);
145 : : static void ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err);
146 : : static void CheckAlterSubOption(Subscription *sub, const char *option,
147 : : bool slot_needs_update, bool isTopLevel);
148 : : static bool alter_sub_conflict_log_dest(Subscription *sub,
149 : : ConflictLogDest oldlogdest,
150 : : ConflictLogDest newlogdest,
151 : : Oid *conflicttablerelid);
152 : : static void drop_sub_conflict_log_table(Oid subid, char *subname,
153 : : Oid subconflictlogrelid);
154 : :
155 : : /*
156 : : * Common option parsing function for CREATE and ALTER SUBSCRIPTION commands.
157 : : *
158 : : * Since not all options can be specified in both commands, this function
159 : : * will report an error if mutually exclusive options are specified.
160 : : */
161 : : static void
1869 dean.a.rasheed@gmail 162 :CBC 748 : parse_subscription_options(ParseState *pstate, List *stmt_options,
163 : : uint32 supported_opts, SubOpts *opts)
164 : : {
165 : : ListCell *lc;
166 : :
167 : : /* Start out with cleared opts. */
1723 michael@paquier.xyz 168 : 748 : memset(opts, 0, sizeof(SubOpts));
169 : :
170 : : /* caller must expect some option */
1878 akapila@postgresql.o 171 [ - + ]: 748 : Assert(supported_opts != 0);
172 : :
173 : : /* If connect option is supported, these others also need to be. */
174 [ + + - + ]: 748 : Assert(!IsSet(supported_opts, SUBOPT_CONNECT) ||
175 : : IsSet(supported_opts, SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
176 : : SUBOPT_COPY_DATA));
177 : :
178 : : /* Set default values for the supported options. */
179 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_CONNECT))
180 : 337 : opts->connect = true;
181 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_ENABLED))
182 : 424 : opts->enabled = true;
183 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_CREATE_SLOT))
184 : 337 : opts->create_slot = true;
185 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_COPY_DATA))
186 : 437 : opts->copy_data = true;
187 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_REFRESH))
188 : 58 : opts->refresh = true;
189 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_BINARY))
190 : 546 : opts->binary = false;
191 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_STREAMING))
668 192 : 546 : opts->streaming = LOGICALREP_STREAM_PARALLEL;
1870 193 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT))
194 : 546 : opts->twophase = false;
1627 195 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR))
196 : 546 : opts->disableonerr = false;
1246 rhaas@postgresql.org 197 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED))
198 : 546 : opts->passwordrequired = true;
1241 199 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER))
200 : 546 : opts->runasowner = false;
940 akapila@postgresql.o 201 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_FAILOVER))
202 : 546 : opts->failover = false;
400 203 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_RETAIN_DEAD_TUPLES))
204 : 546 : opts->retaindeadtuples = false;
359 205 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_MAX_RETENTION_DURATION))
206 : 546 : opts->maxretention = 0;
1498 207 [ + + ]: 748 : if (IsSet(supported_opts, SUBOPT_ORIGIN))
208 : 546 : opts->origin = pstrdup(LOGICALREP_ORIGIN_ANY);
56 akapila@postgresql.o 209 [ + + ]:GNC 748 : if (IsSet(supported_opts, SUBOPT_CONFLICT_LOG_DEST))
210 : 546 : opts->conflictlogdest = CONFLICT_LOG_DEST_LOG;
211 : :
212 : : /* Parse options */
1878 akapila@postgresql.o 213 [ + + + + :CBC 1511 : foreach(lc, stmt_options)
+ + ]
214 : : {
3507 peter_e@gmx.net 215 : 827 : DefElem *defel = (DefElem *) lfirst(lc);
216 : :
1878 akapila@postgresql.o 217 [ + + ]: 827 : if (IsSet(supported_opts, SUBOPT_CONNECT) &&
218 [ + + ]: 461 : strcmp(defel->defname, "connect") == 0)
219 : : {
220 [ - + ]: 171 : if (IsSet(opts->specified_opts, SUBOPT_CONNECT))
1869 dean.a.rasheed@gmail 221 :UBC 0 : errorConflictingDefElem(defel, pstate);
222 : :
1878 akapila@postgresql.o 223 :CBC 171 : opts->specified_opts |= SUBOPT_CONNECT;
224 : 171 : opts->connect = defGetBoolean(defel);
225 : : }
226 [ + + ]: 656 : else if (IsSet(supported_opts, SUBOPT_ENABLED) &&
227 [ + + ]: 377 : strcmp(defel->defname, "enabled") == 0)
228 : : {
229 [ - + ]: 111 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
1869 dean.a.rasheed@gmail 230 :UBC 0 : errorConflictingDefElem(defel, pstate);
231 : :
1878 akapila@postgresql.o 232 :CBC 111 : opts->specified_opts |= SUBOPT_ENABLED;
233 : 111 : opts->enabled = defGetBoolean(defel);
234 : : }
235 [ + + ]: 545 : else if (IsSet(supported_opts, SUBOPT_CREATE_SLOT) &&
236 [ + + ]: 266 : strcmp(defel->defname, "create_slot") == 0)
237 : : {
238 [ - + ]: 25 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
1869 dean.a.rasheed@gmail 239 :UBC 0 : errorConflictingDefElem(defel, pstate);
240 : :
1878 akapila@postgresql.o 241 :CBC 25 : opts->specified_opts |= SUBOPT_CREATE_SLOT;
242 : 25 : opts->create_slot = defGetBoolean(defel);
243 : : }
244 [ + + ]: 520 : else if (IsSet(supported_opts, SUBOPT_SLOT_NAME) &&
245 [ + + ]: 452 : strcmp(defel->defname, "slot_name") == 0)
246 : : {
247 [ - + ]: 143 : if (IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
1869 dean.a.rasheed@gmail 248 :UBC 0 : errorConflictingDefElem(defel, pstate);
249 : :
1878 akapila@postgresql.o 250 :CBC 143 : opts->specified_opts |= SUBOPT_SLOT_NAME;
251 : 143 : opts->slot_name = defGetString(defel);
252 : :
253 : : /* Setting slot_name = NONE is treated as no slot name. */
254 [ + + ]: 282 : if (strcmp(opts->slot_name, "none") == 0)
255 : 115 : opts->slot_name = NULL;
256 : : else
400 257 : 28 : ReplicationSlotValidateName(opts->slot_name, false, ERROR);
258 : : }
1878 259 [ + + ]: 377 : else if (IsSet(supported_opts, SUBOPT_COPY_DATA) &&
260 [ + + ]: 227 : strcmp(defel->defname, "copy_data") == 0)
261 : : {
262 [ - + ]: 32 : if (IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
1869 dean.a.rasheed@gmail 263 :UBC 0 : errorConflictingDefElem(defel, pstate);
264 : :
1878 akapila@postgresql.o 265 :CBC 32 : opts->specified_opts |= SUBOPT_COPY_DATA;
266 : 32 : opts->copy_data = defGetBoolean(defel);
267 : : }
268 [ + + ]: 345 : else if (IsSet(supported_opts, SUBOPT_SYNCHRONOUS_COMMIT) &&
269 [ + + ]: 282 : strcmp(defel->defname, "synchronous_commit") == 0)
270 : : {
271 [ - + ]: 16 : if (IsSet(opts->specified_opts, SUBOPT_SYNCHRONOUS_COMMIT))
1869 dean.a.rasheed@gmail 272 :UBC 0 : errorConflictingDefElem(defel, pstate);
273 : :
1878 akapila@postgresql.o 274 :CBC 16 : opts->specified_opts |= SUBOPT_SYNCHRONOUS_COMMIT;
275 : 16 : opts->synchronous_commit = defGetString(defel);
276 : :
277 : : /* Test if the given value is valid for synchronous_commit GUC. */
278 : 16 : (void) set_config_option("synchronous_commit", opts->synchronous_commit,
279 : : PGC_BACKEND, PGC_S_TEST, GUC_ACTION_SET,
280 : : false, 0, false);
281 : : }
282 [ + + ]: 329 : else if (IsSet(supported_opts, SUBOPT_REFRESH) &&
283 [ + - ]: 48 : strcmp(defel->defname, "refresh") == 0)
284 : : {
285 [ - + ]: 48 : if (IsSet(opts->specified_opts, SUBOPT_REFRESH))
1869 dean.a.rasheed@gmail 286 :UBC 0 : errorConflictingDefElem(defel, pstate);
287 : :
1878 akapila@postgresql.o 288 :CBC 48 : opts->specified_opts |= SUBOPT_REFRESH;
289 : 48 : opts->refresh = defGetBoolean(defel);
290 : : }
291 [ + + ]: 281 : else if (IsSet(supported_opts, SUBOPT_BINARY) &&
292 [ + + ]: 266 : strcmp(defel->defname, "binary") == 0)
293 : : {
294 [ - + ]: 19 : if (IsSet(opts->specified_opts, SUBOPT_BINARY))
1869 dean.a.rasheed@gmail 295 :UBC 0 : errorConflictingDefElem(defel, pstate);
296 : :
1878 akapila@postgresql.o 297 :CBC 19 : opts->specified_opts |= SUBOPT_BINARY;
298 : 19 : opts->binary = defGetBoolean(defel);
299 : : }
300 [ + + ]: 262 : else if (IsSet(supported_opts, SUBOPT_STREAMING) &&
301 [ + + ]: 247 : strcmp(defel->defname, "streaming") == 0)
302 : : {
303 [ - + ]: 43 : if (IsSet(opts->specified_opts, SUBOPT_STREAMING))
1869 dean.a.rasheed@gmail 304 :UBC 0 : errorConflictingDefElem(defel, pstate);
305 : :
1878 akapila@postgresql.o 306 :CBC 43 : opts->specified_opts |= SUBOPT_STREAMING;
1326 307 : 43 : opts->streaming = defGetStreamingMode(defel);
308 : : }
764 309 [ + + ]: 219 : else if (IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT) &&
310 [ + + ]: 204 : strcmp(defel->defname, "two_phase") == 0)
311 : : {
1870 312 [ - + ]: 24 : if (IsSet(opts->specified_opts, SUBOPT_TWOPHASE_COMMIT))
1869 dean.a.rasheed@gmail 313 :UBC 0 : errorConflictingDefElem(defel, pstate);
314 : :
1870 akapila@postgresql.o 315 :CBC 24 : opts->specified_opts |= SUBOPT_TWOPHASE_COMMIT;
316 : 24 : opts->twophase = defGetBoolean(defel);
317 : : }
1627 318 [ + + ]: 195 : else if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR) &&
319 [ + + ]: 180 : strcmp(defel->defname, "disable_on_error") == 0)
320 : : {
321 [ - + ]: 21 : if (IsSet(opts->specified_opts, SUBOPT_DISABLE_ON_ERR))
1627 akapila@postgresql.o 322 :UBC 0 : errorConflictingDefElem(defel, pstate);
323 : :
1627 akapila@postgresql.o 324 :CBC 21 : opts->specified_opts |= SUBOPT_DISABLE_ON_ERR;
325 : 21 : opts->disableonerr = defGetBoolean(defel);
326 : : }
1246 rhaas@postgresql.org 327 [ + + ]: 174 : else if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED) &&
328 [ + + ]: 159 : strcmp(defel->defname, "password_required") == 0)
329 : : {
330 [ - + ]: 17 : if (IsSet(opts->specified_opts, SUBOPT_PASSWORD_REQUIRED))
1246 rhaas@postgresql.org 331 :UBC 0 : errorConflictingDefElem(defel, pstate);
332 : :
1246 rhaas@postgresql.org 333 :CBC 17 : opts->specified_opts |= SUBOPT_PASSWORD_REQUIRED;
334 : 17 : opts->passwordrequired = defGetBoolean(defel);
335 : : }
1241 336 [ + + ]: 157 : else if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER) &&
337 [ + + ]: 142 : strcmp(defel->defname, "run_as_owner") == 0)
338 : : {
339 [ - + ]: 11 : if (IsSet(opts->specified_opts, SUBOPT_RUN_AS_OWNER))
1241 rhaas@postgresql.org 340 :UBC 0 : errorConflictingDefElem(defel, pstate);
341 : :
1241 rhaas@postgresql.org 342 :CBC 11 : opts->specified_opts |= SUBOPT_RUN_AS_OWNER;
343 : 11 : opts->runasowner = defGetBoolean(defel);
344 : : }
940 akapila@postgresql.o 345 [ + + ]: 146 : else if (IsSet(supported_opts, SUBOPT_FAILOVER) &&
346 [ + + ]: 131 : strcmp(defel->defname, "failover") == 0)
347 : : {
348 [ - + ]: 16 : if (IsSet(opts->specified_opts, SUBOPT_FAILOVER))
940 akapila@postgresql.o 349 :UBC 0 : errorConflictingDefElem(defel, pstate);
350 : :
940 akapila@postgresql.o 351 :CBC 16 : opts->specified_opts |= SUBOPT_FAILOVER;
352 : 16 : opts->failover = defGetBoolean(defel);
353 : : }
400 354 [ + + ]: 130 : else if (IsSet(supported_opts, SUBOPT_RETAIN_DEAD_TUPLES) &&
355 [ + + ]: 115 : strcmp(defel->defname, "retain_dead_tuples") == 0)
356 : : {
357 [ - + ]: 14 : if (IsSet(opts->specified_opts, SUBOPT_RETAIN_DEAD_TUPLES))
400 akapila@postgresql.o 358 :UBC 0 : errorConflictingDefElem(defel, pstate);
359 : :
400 akapila@postgresql.o 360 :CBC 14 : opts->specified_opts |= SUBOPT_RETAIN_DEAD_TUPLES;
361 : 14 : opts->retaindeadtuples = defGetBoolean(defel);
362 : : }
359 363 [ + + ]: 116 : else if (IsSet(supported_opts, SUBOPT_MAX_RETENTION_DURATION) &&
364 [ + + ]: 101 : strcmp(defel->defname, "max_retention_duration") == 0)
365 : : {
366 [ - + ]: 22 : if (IsSet(opts->specified_opts, SUBOPT_MAX_RETENTION_DURATION))
359 akapila@postgresql.o 367 :UBC 0 : errorConflictingDefElem(defel, pstate);
368 : :
359 akapila@postgresql.o 369 :CBC 22 : opts->specified_opts |= SUBOPT_MAX_RETENTION_DURATION;
370 : 22 : opts->maxretention = defGetInt32(defel);
371 : :
77 372 [ + + ]: 18 : if (opts->maxretention < 0)
373 [ + - ]: 8 : ereport(ERROR,
374 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
375 : : errmsg("option \"%s\" cannot be negative", "max_retention_duration"));
376 : : }
1498 377 [ + + ]: 94 : else if (IsSet(supported_opts, SUBOPT_ORIGIN) &&
378 [ + + ]: 79 : strcmp(defel->defname, "origin") == 0)
379 : : {
380 [ - + ]: 25 : if (IsSet(opts->specified_opts, SUBOPT_ORIGIN))
1498 akapila@postgresql.o 381 :UBC 0 : errorConflictingDefElem(defel, pstate);
382 : :
1498 akapila@postgresql.o 383 :CBC 25 : opts->specified_opts |= SUBOPT_ORIGIN;
384 : 25 : pfree(opts->origin);
385 : :
386 : : /*
387 : : * Even though the "origin" parameter allows only "none" and "any"
388 : : * values, it is implemented as a string type so that the
389 : : * parameter can be extended in future versions to support
390 : : * filtering using origin names specified by the user.
391 : : */
392 : 25 : opts->origin = defGetString(defel);
393 : :
394 [ + + + + ]: 35 : if ((pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_NONE) != 0) &&
395 : 10 : (pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_ANY) != 0))
396 [ + - ]: 4 : ereport(ERROR,
397 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
398 : : errmsg("unrecognized origin value: \"%s\"", opts->origin));
399 : : }
1619 400 [ + + ]: 69 : else if (IsSet(supported_opts, SUBOPT_LSN) &&
401 [ + - ]: 15 : strcmp(defel->defname, "lsn") == 0)
402 : 11 : {
403 : 15 : char *lsn_str = defGetString(defel);
404 : : XLogRecPtr lsn;
405 : :
406 [ - + ]: 15 : if (IsSet(opts->specified_opts, SUBOPT_LSN))
1619 akapila@postgresql.o 407 :UBC 0 : errorConflictingDefElem(defel, pstate);
408 : :
409 : : /* Setting lsn = NONE is treated as resetting LSN */
1619 akapila@postgresql.o 410 [ + + ]:CBC 15 : if (strcmp(lsn_str, "none") == 0)
411 : 4 : lsn = InvalidXLogRecPtr;
412 : : else
413 : : {
414 : : /* Parse the argument as LSN */
415 : 11 : lsn = DatumGetLSN(DirectFunctionCall1(pg_lsn_in,
416 : : CStringGetDatum(lsn_str)));
417 : :
294 alvherre@kurilemu.de 418 [ + + ]: 11 : if (!XLogRecPtrIsValid(lsn))
1619 akapila@postgresql.o 419 [ + - ]: 4 : ereport(ERROR,
420 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
421 : : errmsg("invalid WAL location (LSN): %s", lsn_str)));
422 : : }
423 : :
424 : 11 : opts->specified_opts |= SUBOPT_LSN;
425 : 11 : opts->lsn = lsn;
426 : : }
188 fujii@postgresql.org 427 [ + - ]: 54 : else if (IsSet(supported_opts, SUBOPT_WAL_RECEIVER_TIMEOUT) &&
428 [ + + ]: 54 : strcmp(defel->defname, "wal_receiver_timeout") == 0)
429 : 8 : {
430 : : bool parsed;
431 : : int val;
432 : :
433 [ - + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_WAL_RECEIVER_TIMEOUT))
188 fujii@postgresql.org 434 :UBC 0 : errorConflictingDefElem(defel, pstate);
435 : :
188 fujii@postgresql.org 436 :CBC 12 : opts->specified_opts |= SUBOPT_WAL_RECEIVER_TIMEOUT;
437 : 12 : opts->wal_receiver_timeout = defGetString(defel);
438 : :
439 : : /*
440 : : * Test if the given value is valid for wal_receiver_timeout GUC.
441 : : * Skip this test if the value is -1, since -1 is allowed for the
442 : : * wal_receiver_timeout subscription option, but not for the GUC
443 : : * itself.
444 : : */
445 : 12 : parsed = parse_int(opts->wal_receiver_timeout, &val, 0, NULL);
446 [ + + - + ]: 12 : if (!parsed || val != -1)
447 : 8 : (void) set_config_option("wal_receiver_timeout", opts->wal_receiver_timeout,
448 : : PGC_BACKEND, PGC_S_TEST, GUC_ACTION_SET,
449 : : false, 0, false);
450 : : }
56 akapila@postgresql.o 451 [ + - ]:GNC 42 : else if (IsSet(supported_opts, SUBOPT_CONFLICT_LOG_DEST) &&
452 [ + + ]: 42 : strcmp(defel->defname, "conflict_log_destination") == 0)
453 : 30 : {
454 : : char *val;
455 : :
456 [ - + ]: 38 : if (IsSet(opts->specified_opts, SUBOPT_CONFLICT_LOG_DEST))
56 akapila@postgresql.o 457 :UNC 0 : errorConflictingDefElem(defel, pstate);
458 : :
56 akapila@postgresql.o 459 :GNC 38 : val = defGetString(defel);
460 : 38 : opts->conflictlogdest = GetConflictLogDest(val);
461 : 30 : opts->specified_opts |= SUBOPT_CONFLICT_LOG_DEST;
462 : : }
463 : : else
3389 peter_e@gmx.net 464 [ + - ]:CBC 4 : ereport(ERROR,
465 : : (errcode(ERRCODE_SYNTAX_ERROR),
466 : : errmsg("unrecognized subscription parameter: \"%s\"", defel->defname)));
467 : : }
468 : :
469 : : /*
470 : : * We've been explicitly asked to not connect, that requires some
471 : : * additional processing.
472 : : */
1878 akapila@postgresql.o 473 [ + + + + ]: 684 : if (!opts->connect && IsSet(supported_opts, SUBOPT_CONNECT))
474 : : {
475 : : /* Check for incompatible options from the user. */
476 [ + - ]: 131 : if (opts->enabled &&
477 [ + + ]: 131 : IsSet(opts->specified_opts, SUBOPT_ENABLED))
3444 peter_e@gmx.net 478 [ + - ]: 4 : ereport(ERROR,
479 : : (errcode(ERRCODE_SYNTAX_ERROR),
480 : : /*- translator: both %s are strings of the form "option = value" */
481 : : errmsg("%s and %s are mutually exclusive options",
482 : : "connect = false", "enabled = true")));
483 : :
1878 akapila@postgresql.o 484 [ + + ]: 127 : if (opts->create_slot &&
485 [ + + ]: 123 : IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
3444 peter_e@gmx.net 486 [ + - ]: 4 : ereport(ERROR,
487 : : (errcode(ERRCODE_SYNTAX_ERROR),
488 : : errmsg("%s and %s are mutually exclusive options",
489 : : "connect = false", "create_slot = true")));
490 : :
1878 akapila@postgresql.o 491 [ + + ]: 123 : if (opts->copy_data &&
492 [ + + ]: 119 : IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
3444 peter_e@gmx.net 493 [ + - ]: 4 : ereport(ERROR,
494 : : (errcode(ERRCODE_SYNTAX_ERROR),
495 : : errmsg("%s and %s are mutually exclusive options",
496 : : "connect = false", "copy_data = true")));
497 : :
498 : : /* Change the defaults of other options. */
1878 akapila@postgresql.o 499 : 119 : opts->enabled = false;
500 : 119 : opts->create_slot = false;
501 : 119 : opts->copy_data = false;
502 : : }
503 : :
504 : : /*
505 : : * Do additional checking for disallowed combination when slot_name = NONE
506 : : * was used.
507 : : */
508 [ + + ]: 672 : if (!opts->slot_name &&
509 [ + + ]: 648 : IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
510 : : {
1723 michael@paquier.xyz 511 [ + + ]: 111 : if (opts->enabled)
512 : : {
513 [ + + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
514 [ + - ]: 4 : ereport(ERROR,
515 : : (errcode(ERRCODE_SYNTAX_ERROR),
516 : : /*- translator: both %s are strings of the form "option = value" */
517 : : errmsg("%s and %s are mutually exclusive options",
518 : : "slot_name = NONE", "enabled = true")));
519 : : else
520 [ + - ]: 8 : ereport(ERROR,
521 : : (errcode(ERRCODE_SYNTAX_ERROR),
522 : : /*- translator: both %s are strings of the form "option = value" */
523 : : errmsg("subscription with %s must also set %s",
524 : : "slot_name = NONE", "enabled = false")));
525 : : }
526 : :
527 [ + + ]: 99 : if (opts->create_slot)
528 : : {
529 [ + + ]: 8 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
530 [ + - ]: 4 : ereport(ERROR,
531 : : (errcode(ERRCODE_SYNTAX_ERROR),
532 : : /*- translator: both %s are strings of the form "option = value" */
533 : : errmsg("%s and %s are mutually exclusive options",
534 : : "slot_name = NONE", "create_slot = true")));
535 : : else
536 [ + - ]: 4 : ereport(ERROR,
537 : : (errcode(ERRCODE_SYNTAX_ERROR),
538 : : /*- translator: both %s are strings of the form "option = value" */
539 : : errmsg("subscription with %s must also set %s",
540 : : "slot_name = NONE", "create_slot = false")));
541 : : }
542 : : }
3507 peter_e@gmx.net 543 : 652 : }
544 : :
545 : : /*
546 : : * Append a suitably-quoted identifier or string literal to buf.
547 : : * "quote" should be either a double-quote or single-quote character.
548 : : *
549 : : * Caution: this quoting logic is sufficient for identifiers and literals
550 : : * in the replication grammar, but not always in regular SQL. Specifically,
551 : : * it'd fail for a string literal if standard_conforming_strings is off.
552 : : */
553 : : static void
73 tgl@sss.pgh.pa.us 554 : 293 : appendQuotedString(StringInfo buf, const char *str, char quote)
555 : : {
556 : 293 : appendStringInfoChar(buf, quote);
557 [ + + ]: 9305 : while (*str)
558 : : {
559 : 9012 : char c = *str++;
560 : :
561 [ - + ]: 9012 : if (c == quote)
73 tgl@sss.pgh.pa.us 562 :UBC 0 : appendStringInfoChar(buf, c);
73 tgl@sss.pgh.pa.us 563 :CBC 9012 : appendStringInfoChar(buf, c);
564 : : }
565 : 293 : appendStringInfoChar(buf, quote);
566 : 293 : }
567 : :
568 : : #define appendQuotedIdentifier(b, s) appendQuotedString(b, s, '"')
569 : : #define appendQuotedLiteral(b, s) appendQuotedString(b, s, '\'')
570 : :
571 : : /*
572 : : * Check that the specified publications are present on the publisher.
573 : : */
574 : : static void
1610 akapila@postgresql.o 575 : 137 : check_publications(WalReceiverConn *wrconn, List *publications)
576 : : {
577 : : WalRcvExecResult *res;
578 : : StringInfoData cmd;
579 : : TupleTableSlot *slot;
580 : 137 : List *publicationsCopy = NIL;
581 : 137 : Oid tableRow[1] = {TEXTOID};
582 : :
294 drowley@postgresql.o 583 : 137 : initStringInfo(&cmd);
584 : 137 : appendStringInfoString(&cmd, "SELECT t.pubname FROM\n"
585 : : " pg_catalog.pg_publication t WHERE\n"
586 : : " t.pubname IN (");
587 : 137 : GetPublicationsStr(publications, &cmd, true);
588 : 137 : appendStringInfoChar(&cmd, ')');
589 : :
590 : 137 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
591 : 137 : pfree(cmd.data);
592 : :
1610 akapila@postgresql.o 593 [ - + ]: 137 : if (res->status != WALRCV_OK_TUPLES)
1610 akapila@postgresql.o 594 [ # # ]:UBC 0 : ereport(ERROR,
595 : : errmsg("could not receive list of publications from the publisher: %s",
596 : : res->err));
597 : :
1610 akapila@postgresql.o 598 :CBC 137 : publicationsCopy = list_copy(publications);
599 : :
600 : : /* Process publication(s). */
601 : 137 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
602 [ + + ]: 304 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
603 : : {
604 : : char *pubname;
605 : : bool isnull;
606 : :
607 : 167 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
608 [ - + ]: 167 : Assert(!isnull);
609 : :
610 : : /* Delete the publication present in publisher from the list. */
611 : 167 : publicationsCopy = list_delete(publicationsCopy, makeString(pubname));
612 : 167 : ExecClearTuple(slot);
613 : : }
614 : :
615 : 137 : ExecDropSingleTupleTableSlot(slot);
616 : :
617 : 137 : walrcv_clear_result(res);
618 : :
619 [ + + ]: 137 : if (list_length(publicationsCopy))
620 : : {
621 : : /* Prepare the list of non-existent publication(s) for error message. */
622 : : StringInfoData pubnames;
623 : :
294 drowley@postgresql.o 624 : 4 : initStringInfo(&pubnames);
625 : :
626 : 4 : GetPublicationsStr(publicationsCopy, &pubnames, false);
1610 akapila@postgresql.o 627 [ + - ]: 4 : ereport(WARNING,
628 : : errcode(ERRCODE_UNDEFINED_OBJECT),
629 : : errmsg_plural("publication %s does not exist on the publisher",
630 : : "publications %s do not exist on the publisher",
631 : : list_length(publicationsCopy),
632 : : pubnames.data));
633 : : }
634 : 137 : }
635 : :
636 : : /*
637 : : * Auxiliary function to build a text array out of a list of String nodes.
638 : : */
639 : : static Datum
3507 peter_e@gmx.net 640 : 257 : publicationListToArray(List *publist)
641 : : {
642 : : ArrayType *arr;
643 : : Datum *datums;
644 : : MemoryContext memcxt;
645 : : MemoryContext oldcxt;
646 : :
647 : : /* Create memory context for temporary allocations. */
648 : 257 : memcxt = AllocSetContextCreate(CurrentMemoryContext,
649 : : "publicationListToArray to array",
650 : : ALLOCSET_DEFAULT_SIZES);
651 : 257 : oldcxt = MemoryContextSwitchTo(memcxt);
652 : :
260 michael@paquier.xyz 653 : 257 : datums = palloc_array(Datum, list_length(publist));
654 : :
1969 peter@eisentraut.org 655 : 257 : check_duplicates_in_publist(publist, datums);
656 : :
3507 peter_e@gmx.net 657 : 253 : MemoryContextSwitchTo(oldcxt);
658 : :
1518 peter@eisentraut.org 659 : 253 : arr = construct_array_builtin(datums, list_length(publist), TEXTOID);
660 : :
3507 peter_e@gmx.net 661 : 253 : MemoryContextDelete(memcxt);
662 : :
663 : 253 : return PointerGetDatum(arr);
664 : : }
665 : :
666 : : /*
667 : : * Create new subscription.
668 : : */
669 : : ObjectAddress
1869 dean.a.rasheed@gmail 670 : 337 : CreateSubscription(ParseState *pstate, CreateSubscriptionStmt *stmt,
671 : : bool isTopLevel)
672 : : {
673 : : Relation rel;
674 : : ObjectAddress myself;
675 : : Oid subid;
676 : : bool nulls[Natts_pg_subscription];
677 : : Datum values[Natts_pg_subscription];
3506 alvherre@alvh.no-ip. 678 : 337 : Oid owner = GetUserId();
679 : : HeapTuple tup;
22 jdavis@postgresql.or 680 : 337 : Oid serverid = InvalidOid;
681 : 337 : char *conninfo = NULL;
682 : : char originname[NAMEDATALEN];
683 : : List *publications;
684 : : uint32 supported_opts;
1878 akapila@postgresql.o 685 : 337 : SubOpts opts = {0};
686 : : AclResult aclresult;
56 akapila@postgresql.o 687 :GNC 337 : Oid logrelid = InvalidOid;
688 : :
689 : : /*
690 : : * Parse and check options.
691 : : *
692 : : * Connection and publication should not be specified here.
693 : : */
1878 akapila@postgresql.o 694 :CBC 337 : supported_opts = (SUBOPT_CONNECT | SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
695 : : SUBOPT_SLOT_NAME | SUBOPT_COPY_DATA |
696 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
697 : : SUBOPT_STREAMING | SUBOPT_TWOPHASE_COMMIT |
698 : : SUBOPT_DISABLE_ON_ERR | SUBOPT_PASSWORD_REQUIRED |
699 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER |
700 : : SUBOPT_RETAIN_DEAD_TUPLES |
701 : : SUBOPT_MAX_RETENTION_DURATION |
702 : : SUBOPT_WAL_RECEIVER_TIMEOUT | SUBOPT_ORIGIN |
703 : : SUBOPT_CONFLICT_LOG_DEST);
1869 dean.a.rasheed@gmail 704 : 337 : parse_subscription_options(pstate, stmt->options, supported_opts, &opts);
705 : :
706 : : /*
707 : : * Since creating a replication slot is not transactional, rolling back
708 : : * the transaction leaves the created replication slot. So we cannot run
709 : : * CREATE SUBSCRIPTION inside a transaction block if creating a
710 : : * replication slot.
711 : : */
1878 akapila@postgresql.o 712 [ + + ]: 265 : if (opts.create_slot)
3114 peter_e@gmx.net 713 : 141 : PreventInTransactionBlock(isTopLevel, "CREATE SUBSCRIPTION ... WITH (create_slot = true)");
714 : :
715 : : /*
716 : : * We don't want to allow unprivileged users to be able to trigger
717 : : * attempts to access arbitrary network destinations, so require the user
718 : : * to have been specifically authorized to create subscriptions.
719 : : */
1246 rhaas@postgresql.org 720 [ + + ]: 261 : if (!has_privs_of_role(owner, ROLE_PG_CREATE_SUBSCRIPTION))
3507 peter_e@gmx.net 721 [ + - ]: 4 : ereport(ERROR,
722 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
723 : : errmsg("permission denied to create subscription"),
724 : : errdetail("Only roles with privileges of the \"%s\" role may create subscriptions.",
725 : : "pg_create_subscription")));
726 : :
727 : : /*
728 : : * Since a subscription is a database object, we also check for CREATE
729 : : * permission on the database.
730 : : */
1246 rhaas@postgresql.org 731 : 257 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
732 : : owner, ACL_CREATE);
733 [ + + ]: 257 : if (aclresult != ACLCHECK_OK)
734 : 8 : aclcheck_error(aclresult, OBJECT_DATABASE,
735 : 4 : get_database_name(MyDatabaseId));
736 : :
737 : : /*
738 : : * Non-superusers are required to set a password for authentication, and
739 : : * that password must be used by the target server, but the superuser can
740 : : * exempt a subscription from this requirement.
741 : : */
742 [ + + + + ]: 253 : if (!opts.passwordrequired && !superuser_arg(owner))
1196 tgl@sss.pgh.pa.us 743 [ + - ]: 4 : ereport(ERROR,
744 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
745 : : errmsg("password_required=false is superuser-only"),
746 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
747 : :
748 : : /*
749 : : * If built with appropriate switch, whine when regression-testing
750 : : * conventions for subscription names are violated.
751 : : */
752 : : #ifdef ENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS
753 : : if (strncmp(stmt->subname, "regress_", 8) != 0)
754 : : elog(WARNING, "subscriptions created by regression test cases should have names starting with \"regress_\"");
755 : : #endif
756 : :
2775 andres@anarazel.de 757 : 249 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
758 : :
759 : : /* Check if name is used */
2837 760 : 249 : subid = GetSysCacheOid2(SUBSCRIPTIONNAME, Anum_pg_subscription_oid,
761 : : ObjectIdGetDatum(MyDatabaseId), CStringGetDatum(stmt->subname));
3507 peter_e@gmx.net 762 [ + + ]: 249 : if (OidIsValid(subid))
763 : : {
764 [ + - ]: 5 : ereport(ERROR,
765 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
766 : : errmsg("subscription \"%s\" already exists",
767 : : stmt->subname)));
768 : : }
769 : :
770 : : /*
771 : : * Ensure that system configuration parameters are set appropriately to
772 : : * support retain_dead_tuples and max_retention_duration.
773 : : */
359 akapila@postgresql.o 774 : 244 : CheckSubDeadTupleRetention(true, !opts.enabled, WARNING,
775 : 244 : opts.retaindeadtuples, opts.retaindeadtuples,
776 : 244 : (opts.maxretention > 0));
777 : :
1878 778 [ + + ]: 244 : if (!IsSet(opts.specified_opts, SUBOPT_SLOT_NAME) &&
779 [ + - ]: 201 : opts.slot_name == NULL)
780 : 201 : opts.slot_name = stmt->subname;
781 : :
782 : : /* The default for synchronous_commit of subscriptions is off. */
783 [ + - ]: 244 : if (opts.synchronous_commit == NULL)
784 : 244 : opts.synchronous_commit = "off";
785 : :
786 : : /*
787 : : * The default for wal_receiver_timeout of subscriptions is -1, which
788 : : * means the value is inherited from the server configuration, command
789 : : * line, or role/database settings.
790 : : */
188 fujii@postgresql.org 791 [ + - ]: 244 : if (opts.wal_receiver_timeout == NULL)
792 : 244 : opts.wal_receiver_timeout = "-1";
793 : :
794 : : /* Load the library providing us libpq calls. */
3507 peter_e@gmx.net 795 : 244 : load_file("libpqwalreceiver", false);
796 : :
174 jdavis@postgresql.or 797 [ + + ]: 244 : if (stmt->servername)
798 : : {
799 : : ForeignServer *server;
800 : :
801 [ - + ]: 20 : Assert(!stmt->conninfo);
802 : :
803 : 20 : server = GetForeignServerByName(stmt->servername, false);
22 804 : 20 : serverid = server->serverid;
805 : :
806 : : /* check USAGE privileges on server */
807 : 20 : aclresult = object_aclcheck(ForeignServerRelationId, serverid, owner, ACL_USAGE);
174 808 [ + + ]: 20 : if (aclresult != ACLCHECK_OK)
809 : 4 : aclcheck_error(aclresult, OBJECT_FOREIGN_SERVER, server->servername);
810 : :
811 : : /* check user mapping */
22 812 : 16 : GetUserMappingExtended(owner, server->serverid, WARNING);
813 : :
814 : : /*
815 : : * Check conninfo if connecting; otherwise only check that the
816 : : * server's FDW supports connections.
817 : : */
818 [ + + ]: 16 : if (opts.connect)
819 : : {
820 : 2 : conninfo = ForeignServerConnectionString(owner, server);
821 [ - + - - ]: 1 : walrcv_check_conninfo(conninfo, opts.passwordrequired && !superuser());
822 : : }
823 : : else
824 : : {
825 : 14 : ForeignDataWrapper *fdw = GetForeignDataWrapper(server->fdwid);
826 : :
827 [ + + ]: 14 : if (!OidIsValid(fdw->fdwconnection))
828 [ + - ]: 4 : ereport(ERROR,
829 : : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
830 : : errmsg("foreign-data wrapper \"%s\" does not support subscription connections",
831 : : fdw->fdwname),
832 : : errdetail("Foreign-data wrapper must be defined with CONNECTION specified.")));
833 : : }
834 : : }
835 : : else
836 : : {
174 837 [ - + ]: 224 : Assert(stmt->conninfo);
838 : :
839 : 224 : conninfo = stmt->conninfo;
22 840 [ + + + + ]: 224 : walrcv_check_conninfo(conninfo, opts.passwordrequired && !superuser());
841 : : }
842 : :
174 843 : 223 : publications = stmt->publication;
844 : :
845 : : /* Everything ok, form a new tuple. */
3507 peter_e@gmx.net 846 : 223 : memset(values, 0, sizeof(values));
847 : 223 : memset(nulls, false, sizeof(nulls));
848 : :
2837 andres@anarazel.de 849 : 223 : subid = GetNewOidWithIndex(rel, SubscriptionObjectIndexId,
850 : : Anum_pg_subscription_oid);
851 : 223 : values[Anum_pg_subscription_oid - 1] = ObjectIdGetDatum(subid);
3507 peter_e@gmx.net 852 : 223 : values[Anum_pg_subscription_subdbid - 1] = ObjectIdGetDatum(MyDatabaseId);
1603 akapila@postgresql.o 853 : 223 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(InvalidXLogRecPtr);
3507 peter_e@gmx.net 854 : 223 : values[Anum_pg_subscription_subname - 1] =
855 : 223 : DirectFunctionCall1(namein, CStringGetDatum(stmt->subname));
3506 alvherre@alvh.no-ip. 856 : 223 : values[Anum_pg_subscription_subowner - 1] = ObjectIdGetDatum(owner);
1878 akapila@postgresql.o 857 : 223 : values[Anum_pg_subscription_subenabled - 1] = BoolGetDatum(opts.enabled);
858 : 223 : values[Anum_pg_subscription_subbinary - 1] = BoolGetDatum(opts.binary);
1326 859 : 223 : values[Anum_pg_subscription_substream - 1] = CharGetDatum(opts.streaming);
1870 860 : 223 : values[Anum_pg_subscription_subtwophasestate - 1] =
861 [ + + ]: 223 : CharGetDatum(opts.twophase ?
862 : : LOGICALREP_TWOPHASE_STATE_PENDING :
863 : : LOGICALREP_TWOPHASE_STATE_DISABLED);
1627 864 : 223 : values[Anum_pg_subscription_subdisableonerr - 1] = BoolGetDatum(opts.disableonerr);
1246 rhaas@postgresql.org 865 : 223 : values[Anum_pg_subscription_subpasswordrequired - 1] = BoolGetDatum(opts.passwordrequired);
1241 866 : 223 : values[Anum_pg_subscription_subrunasowner - 1] = BoolGetDatum(opts.runasowner);
940 akapila@postgresql.o 867 : 223 : values[Anum_pg_subscription_subfailover - 1] = BoolGetDatum(opts.failover);
400 868 : 223 : values[Anum_pg_subscription_subretaindeadtuples - 1] =
869 : 223 : BoolGetDatum(opts.retaindeadtuples);
359 870 : 223 : values[Anum_pg_subscription_submaxretention - 1] =
871 : 223 : Int32GetDatum(opts.maxretention);
872 : 223 : values[Anum_pg_subscription_subretentionactive - 1] =
121 873 : 223 : BoolGetDatum(opts.retaindeadtuples);
129 peter@eisentraut.org 874 : 223 : values[Anum_pg_subscription_subserver - 1] = ObjectIdGetDatum(serverid);
12 jdavis@postgresql.or 875 [ + + ]: 223 : if (stmt->conninfo)
876 : : {
877 [ + - - + ]: 212 : Assert(stmt->conninfo == conninfo && !OidIsValid(serverid));
174 878 : 212 : values[Anum_pg_subscription_subconninfo - 1] =
12 879 : 212 : CStringGetTextDatum(stmt->conninfo);
880 : : }
881 : : else
882 : : {
883 [ - + ]: 11 : Assert(OidIsValid(serverid));
174 884 : 11 : nulls[Anum_pg_subscription_subconninfo - 1] = true;
885 : : }
1878 akapila@postgresql.o 886 [ + + ]: 223 : if (opts.slot_name)
3397 peter_e@gmx.net 887 : 208 : values[Anum_pg_subscription_subslotname - 1] =
1878 akapila@postgresql.o 888 : 208 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
889 : : else
3397 peter_e@gmx.net 890 : 15 : nulls[Anum_pg_subscription_subslotname - 1] = true;
3422 891 : 223 : values[Anum_pg_subscription_subsynccommit - 1] =
1878 akapila@postgresql.o 892 : 223 : CStringGetTextDatum(opts.synchronous_commit);
188 fujii@postgresql.org 893 : 223 : values[Anum_pg_subscription_subwalrcvtimeout - 1] =
894 : 223 : CStringGetTextDatum(opts.wal_receiver_timeout);
3507 peter_e@gmx.net 895 : 219 : values[Anum_pg_subscription_subpublications - 1] =
3389 bruce@momjian.us 896 : 223 : publicationListToArray(publications);
1498 akapila@postgresql.o 897 : 219 : values[Anum_pg_subscription_suborigin - 1] =
898 : 219 : CStringGetTextDatum(opts.origin);
899 : :
56 akapila@postgresql.o 900 :GNC 219 : values[Anum_pg_subscription_subconflictlogdest - 1] =
901 : 219 : CStringGetTextDatum(ConflictLogDestNames[opts.conflictlogdest]);
902 : :
903 : : /*
904 : : * We create the conflict log table here, if required, so that its
905 : : * relation OID can be stored when inserting the pg_subscription tuple
906 : : * below.
907 : : */
908 [ + + + + ]: 219 : if (CONFLICTS_LOGGED_TO_TABLE(opts.conflictlogdest))
909 : 10 : logrelid = create_conflict_log_table(subid, stmt->subname, owner);
910 : :
911 : : /* Store table OID in the catalog. */
912 : 219 : values[Anum_pg_subscription_subconflictlogrelid - 1] =
913 : 219 : ObjectIdGetDatum(logrelid);
914 : :
3507 peter_e@gmx.net 915 :CBC 219 : tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
916 : :
917 : : /* Insert tuple into catalog. */
2837 andres@anarazel.de 918 : 219 : CatalogTupleInsert(rel, tup);
3507 peter_e@gmx.net 919 : 219 : heap_freetuple(tup);
920 : :
3506 alvherre@alvh.no-ip. 921 : 219 : recordDependencyOnOwner(SubscriptionRelationId, subid, owner);
922 : :
174 jdavis@postgresql.or 923 : 219 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
924 : :
925 [ + + ]: 219 : if (stmt->servername)
926 : : {
927 : : ObjectAddress referenced;
928 : :
929 [ - + ]: 11 : Assert(OidIsValid(serverid));
930 : :
931 : 11 : ObjectAddressSet(referenced, ForeignServerRelationId, serverid);
932 : 11 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
933 : : }
934 : :
935 : : /*
936 : : * Establish an internal dependency between the conflict log table and the
937 : : * subscription.
938 : : *
939 : : * We use DEPENDENCY_INTERNAL to signify that the table's lifecycle is
940 : : * strictly tied to the subscription, similar to how a TOAST table relates
941 : : * to its main table or a sequence relates to an identity column.
942 : : *
943 : : * This ensures the conflict log table is automatically reaped during a
944 : : * DROP SUBSCRIPTION via performDeletion().
945 : : */
56 akapila@postgresql.o 946 [ + + ]:GNC 219 : if (OidIsValid(logrelid))
947 : : {
948 : : ObjectAddress cltaddr;
949 : :
950 : 10 : ObjectAddressSet(cltaddr, RelationRelationId, logrelid);
951 : 10 : recordDependencyOn(&cltaddr, &myself, DEPENDENCY_INTERNAL);
952 : : }
953 : :
954 : : /*
955 : : * A replication origin is currently created for all subscriptions,
956 : : * including those that only contain sequences or are otherwise empty.
957 : : *
958 : : * XXX: While this is technically unnecessary, optimizing it would require
959 : : * additional logic to skip origin creation during DDL operations and
960 : : * apply workers initialization, and to handle origin creation dynamically
961 : : * when tables are added to the subscription. It is not clear whether
962 : : * preventing creation of origins is worth additional complexity.
963 : : */
1416 akapila@postgresql.o 964 :CBC 219 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
3507 peter_e@gmx.net 965 : 219 : replorigin_create(originname);
966 : :
967 : : /*
968 : : * Connect to remote side to execute requested commands and fetch table
969 : : * and sequence info.
970 : : */
1878 akapila@postgresql.o 971 [ + + ]: 219 : if (opts.connect)
972 : : {
973 : : char *err;
974 : : WalReceiverConn *wrconn;
975 : : bool must_use_password;
976 : :
977 : : /* Try to connect to the publisher. */
1246 rhaas@postgresql.org 978 [ - + - - ]: 132 : must_use_password = !superuser_arg(owner) && opts.passwordrequired;
934 akapila@postgresql.o 979 : 132 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
980 : : stmt->subname, &err);
3507 peter_e@gmx.net 981 [ + + ]: 132 : if (!wrconn)
982 [ + - ]: 4 : ereport(ERROR,
983 : : (errcode(ERRCODE_CONNECTION_FAILURE),
984 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
985 : : stmt->subname, err)));
986 : :
3501 987 [ + + ]: 128 : PG_TRY();
988 : : {
308 akapila@postgresql.o 989 : 128 : bool has_tables = false;
990 : : List *pubrels;
991 : : char relation_state;
992 : :
1610 993 : 128 : check_publications(wrconn, publications);
308 994 : 128 : check_publications_origin_tables(wrconn, publications,
995 : 128 : opts.copy_data,
996 : 128 : opts.retaindeadtuples, opts.origin,
997 : : NULL, 0, stmt->subname);
998 : 128 : check_publications_origin_sequences(wrconn, publications,
999 : 128 : opts.copy_data, opts.origin,
1000 : : NULL, 0, stmt->subname);
1001 : :
400 1002 [ + + ]: 128 : if (opts.retaindeadtuples)
23 1003 : 3 : CheckPubDeadTupleRetention(wrconn);
1004 : :
1005 : : /*
1006 : : * Set sync state based on if we were asked to do data copy or
1007 : : * not.
1008 : : */
308 1009 [ + + ]: 128 : relation_state = opts.copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY;
1010 : :
1011 : : /*
1012 : : * Build local relation status info. Relations are for both tables
1013 : : * and sequences from the publisher.
1014 : : */
1015 : 128 : pubrels = fetch_relation_list(wrconn, publications);
1016 : :
1017 [ + + + + : 452 : foreach_ptr(PublicationRelKind, pubrelinfo, pubrels)
+ + ]
1018 : : {
1019 : : Oid relid;
1020 : : char relkind;
1021 : 198 : RangeVar *rv = pubrelinfo->rv;
1022 : :
3443 peter_e@gmx.net 1023 : 198 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
308 akapila@postgresql.o 1024 : 198 : relkind = get_rel_relkind(relid);
1025 : :
1026 : : /* Check for supported relkind. */
1027 : 198 : CheckSubscriptionRelkind(relkind, pubrelinfo->relkind,
3390 peter_e@gmx.net 1028 : 198 : rv->schemaname, rv->relname);
308 akapila@postgresql.o 1029 : 198 : has_tables |= (relkind != RELKIND_SEQUENCE);
1030 : 198 : AddSubscriptionRelState(subid, relid, relation_state,
1031 : : InvalidXLogRecPtr, true);
1032 : : }
1033 : :
1034 : : /*
1035 : : * If requested, create permanent slot for the subscription. We
1036 : : * won't use the initial snapshot for anything, so no need to
1037 : : * export it.
1038 : : *
1039 : : * XXX: Similar to origins, it is not clear whether preventing the
1040 : : * slot creation for empty and sequence-only subscriptions is
1041 : : * worth additional complexity.
1042 : : */
1878 1043 [ + + ]: 127 : if (opts.create_slot)
1044 : : {
1870 1045 : 122 : bool twophase_enabled = false;
1046 : :
1878 1047 [ - + ]: 122 : Assert(opts.slot_name);
1048 : :
1049 : : /*
1050 : : * Even if two_phase is set, don't create the slot with
1051 : : * two-phase enabled. Will enable it once all the tables are
1052 : : * synced and ready. This avoids race-conditions like prepared
1053 : : * transactions being skipped due to changes not being applied
1054 : : * due to checks in should_apply_changes_for_rel() when
1055 : : * tablesync for the corresponding tables are in progress. See
1056 : : * comments atop worker.c.
1057 : : *
1058 : : * Note that if tables were specified but copy_data is false
1059 : : * then it is safe to enable two_phase up-front because those
1060 : : * tables are already initially in READY state. When the
1061 : : * subscription has no tables, we leave the twophase state as
1062 : : * PENDING, to allow ALTER SUBSCRIPTION ... REFRESH
1063 : : * PUBLICATION to work.
1064 : : */
308 1065 [ + + + + : 122 : if (opts.twophase && !opts.copy_data && has_tables)
+ - ]
1870 1066 : 1 : twophase_enabled = true;
1067 : :
1068 : 122 : walrcv_create_slot(wrconn, opts.slot_name, false, twophase_enabled,
1069 : : opts.failover, CRS_NOEXPORT_SNAPSHOT, NULL);
1070 : :
1071 [ + + ]: 122 : if (twophase_enabled)
1072 : 1 : UpdateTwoPhaseState(subid, LOGICALREP_TWOPHASE_STATE_ENABLED);
1073 : :
3415 peter_e@gmx.net 1074 [ + - ]: 122 : ereport(NOTICE,
1075 : : (errmsg("created replication slot \"%s\" on publisher",
1076 : : opts.slot_name)));
1077 : : }
1078 : : }
2491 peter@eisentraut.org 1079 : 1 : PG_FINALLY();
1080 : : {
3501 peter_e@gmx.net 1081 : 128 : walrcv_disconnect(wrconn);
1082 : : }
1083 [ + + ]: 128 : PG_END_TRY();
1084 : : }
1085 : : else
3444 1086 [ + - ]: 87 : ereport(WARNING,
1087 : : (errmsg("subscription was created, but is not connected"),
1088 : : errhint("To initiate replication, you must manually create the replication slot, enable the subscription, and alter the subscription to refresh publications.")));
1089 : :
2775 andres@anarazel.de 1090 : 214 : table_close(rel, RowExclusiveLock);
1091 : :
1604 1092 : 214 : pgstat_create_subscription(subid);
1093 : :
1094 : : /*
1095 : : * Notify the launcher to start the apply worker if the subscription is
1096 : : * enabled, or to create the conflict detection slot if retain_dead_tuples
1097 : : * is enabled.
1098 : : *
1099 : : * Creating the conflict detection slot is essential even when the
1100 : : * subscription is not enabled. This ensures that dead tuples are
1101 : : * retained, which is necessary for accurately identifying the type of
1102 : : * conflict during replication.
1103 : : */
353 akapila@postgresql.o 1104 [ + + + + ]: 214 : if (opts.enabled || opts.retaindeadtuples)
3405 peter_e@gmx.net 1105 : 121 : ApplyLauncherWakeupAtCommit();
1106 : :
3507 1107 [ - + ]: 214 : InvokeObjectPostCreateHook(SubscriptionRelationId, subid, 0);
1108 : :
1109 : 214 : return myself;
1110 : : }
1111 : :
1112 : : static void
1610 akapila@postgresql.o 1113 : 40 : AlterSubscription_refresh(Subscription *sub, bool copy_data,
1114 : : List *validate_publications, char *conninfo)
1115 : : {
1116 : : char *err;
308 1117 : 40 : List *pubrels = NIL;
1118 : : Oid *pubrel_local_oids;
1119 : : List *subrel_states;
1120 : 40 : List *sub_remove_rels = NIL;
1121 : : Oid *subrel_local_oids;
1122 : : Oid *subseq_local_oids;
1123 : : int subrel_count;
1124 : : ListCell *lc;
1125 : : int off;
1126 : 40 : int tbl_count = 0;
1127 : 40 : int seq_count = 0;
2022 1128 : 40 : Relation rel = NULL;
1129 : : typedef struct SubRemoveRels
1130 : : {
1131 : : Oid relid;
1132 : : char state;
1133 : : } SubRemoveRels;
1134 : :
1135 : : WalReceiverConn *wrconn;
1136 : : bool must_use_password;
1137 : :
1138 : : /*
1139 : : * Should not happen: CREATE/ALTER/DROP SUBSCRIPTION did not call
1140 : : * SubscriptionConninfo() in a path where it's required.
1141 : : */
22 jdavis@postgresql.or 1142 [ - + ]: 40 : if (!conninfo)
22 jdavis@postgresql.or 1143 [ # # ]:UBC 0 : elog(ERROR, "no connection string provided for subscription");
1144 : :
1145 : : /* Load the library providing us libpq calls. */
3444 peter_e@gmx.net 1146 :CBC 40 : load_file("libpqwalreceiver", false);
1147 : :
1148 : : /* Try to connect to the publisher. */
1045 akapila@postgresql.o 1149 [ + - + + ]: 40 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
22 jdavis@postgresql.or 1150 : 40 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
1151 : : sub->name, &err);
1938 alvherre@alvh.no-ip. 1152 [ - + ]: 39 : if (!wrconn)
1938 alvherre@alvh.no-ip. 1153 [ # # ]:UBC 0 : ereport(ERROR,
1154 : : (errcode(ERRCODE_CONNECTION_FAILURE),
1155 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
1156 : : sub->name, err)));
1157 : :
2022 akapila@postgresql.o 1158 [ + - ]:CBC 39 : PG_TRY();
1159 : : {
1610 1160 [ + + ]: 39 : if (validate_publications)
1161 : 9 : check_publications(wrconn, validate_publications);
1162 : :
1163 : : /* Get the relation list from publisher. */
308 1164 : 39 : pubrels = fetch_relation_list(wrconn, sub->publications);
1165 : :
1166 : : /* Get local relation list. */
1167 : 39 : subrel_states = GetSubscriptionRelations(sub->oid, true, true, false);
1449 1168 : 39 : subrel_count = list_length(subrel_states);
1169 : :
1170 : : /* Allow a test to drop a subscribed relation before the origin check. */
1 msawada@postgresql.o 1171 : 39 : INJECTION_POINT("subscription-refresh-before-origin-check", NULL);
1172 : :
1173 : : /*
1174 : : * Build qsorted arrays of local table oids and sequence oids for
1175 : : * faster lookup. This can potentially contain all tables and
1176 : : * sequences in the database so speed of lookup is important.
1177 : : *
1178 : : * We do not yet know the exact count of tables and sequences, so we
1179 : : * allocate separate arrays for table OIDs and sequence OIDs based on
1180 : : * the total number of relations (subrel_count).
1181 : : */
10 michael@paquier.xyz 1182 :GNC 39 : subrel_local_oids = palloc_array(Oid, subrel_count);
1183 : 39 : subseq_local_oids = palloc_array(Oid, subrel_count);
2022 akapila@postgresql.o 1184 [ + + + + :CBC 139 : foreach(lc, subrel_states)
+ + ]
1185 : : {
1186 : 100 : SubscriptionRelState *relstate = (SubscriptionRelState *) lfirst(lc);
1187 : :
308 1188 [ + + ]: 100 : if (get_rel_relkind(relstate->relid) == RELKIND_SEQUENCE)
1189 : 10 : subseq_local_oids[seq_count++] = relstate->relid;
1190 : : else
1191 : 90 : subrel_local_oids[tbl_count++] = relstate->relid;
1192 : : }
1193 : :
1194 : 39 : qsort(subrel_local_oids, tbl_count, sizeof(Oid), oid_cmp);
1195 : 39 : check_publications_origin_tables(wrconn, sub->publications, copy_data,
1196 : 39 : sub->retaindeadtuples, sub->origin,
1197 : : subrel_local_oids, tbl_count,
1198 : : sub->name);
1199 : :
1200 : 39 : qsort(subseq_local_oids, seq_count, sizeof(Oid), oid_cmp);
1201 : 39 : check_publications_origin_sequences(wrconn, sub->publications,
1202 : : copy_data, sub->origin,
1203 : : subseq_local_oids, seq_count,
1204 : : sub->name);
1205 : :
1206 : : /*
1207 : : * Walk over the remote relations and try to match them to locally
1208 : : * known relations. If the relation is not known locally create a new
1209 : : * state for it.
1210 : : *
1211 : : * Also builds array of local oids of remote relations for the next
1212 : : * step.
1213 : : */
2022 1214 : 39 : off = 0;
10 michael@paquier.xyz 1215 :GNC 39 : pubrel_local_oids = palloc_array(Oid, list_length(pubrels));
1216 : :
308 akapila@postgresql.o 1217 [ + + + + :CBC 185 : foreach_ptr(PublicationRelKind, pubrelinfo, pubrels)
+ + ]
1218 : : {
1219 : 107 : RangeVar *rv = pubrelinfo->rv;
1220 : : Oid relid;
1221 : : char relkind;
1222 : :
2022 1223 : 107 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
308 1224 : 107 : relkind = get_rel_relkind(relid);
1225 : :
1226 : : /* Check for supported relkind. */
1227 : 107 : CheckSubscriptionRelkind(relkind, pubrelinfo->relkind,
2022 1228 : 107 : rv->schemaname, rv->relname);
1229 : :
1230 : 107 : pubrel_local_oids[off++] = relid;
1231 : :
1232 [ + + ]: 107 : if (!bsearch(&relid, subrel_local_oids,
308 1233 : 39 : tbl_count, sizeof(Oid), oid_cmp) &&
1234 [ + + ]: 39 : !bsearch(&relid, subseq_local_oids,
1235 : : seq_count, sizeof(Oid), oid_cmp))
1236 : : {
2022 1237 [ + + ]: 30 : AddSubscriptionRelState(sub->oid, relid,
1238 : : copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY,
1239 : : InvalidXLogRecPtr, true);
1240 [ + + - + ]: 30 : ereport(DEBUG1,
1241 : : errmsg_internal("%s \"%s.%s\" added to subscription \"%s\"",
1242 : : relkind == RELKIND_SEQUENCE ? "sequence" : "table",
1243 : : rv->schemaname, rv->relname, sub->name));
1244 : : }
1245 : : }
1246 : :
1247 : : /*
1248 : : * Next remove state for tables we should not care about anymore using
1249 : : * the data we collected above
1250 : : */
308 1251 : 39 : qsort(pubrel_local_oids, list_length(pubrels), sizeof(Oid), oid_cmp);
1252 : :
1253 [ + + ]: 129 : for (off = 0; off < tbl_count; off++)
1254 : : {
2022 1255 : 90 : Oid relid = subrel_local_oids[off];
1256 : :
1257 [ + + ]: 90 : if (!bsearch(&relid, pubrel_local_oids,
308 1258 : 90 : list_length(pubrels), sizeof(Oid), oid_cmp))
1259 : : {
1260 : : char state;
1261 : : XLogRecPtr statelsn;
260 michael@paquier.xyz 1262 : 22 : SubRemoveRels *remove_rel = palloc_object(SubRemoveRels);
1263 : :
1264 : : /*
1265 : : * Lock pg_subscription_rel with AccessExclusiveLock to
1266 : : * prevent any race conditions with the apply worker
1267 : : * re-launching workers at the same time this code is trying
1268 : : * to remove those tables.
1269 : : *
1270 : : * Even if new worker for this particular rel is restarted it
1271 : : * won't be able to make any progress as we hold exclusive
1272 : : * lock on pg_subscription_rel till the transaction end. It
1273 : : * will simply exit as there is no corresponding rel entry.
1274 : : *
1275 : : * This locking also ensures that the state of rels won't
1276 : : * change till we are done with this refresh operation.
1277 : : */
2022 akapila@postgresql.o 1278 [ + + ]: 22 : if (!rel)
1279 : 10 : rel = table_open(SubscriptionRelRelationId, AccessExclusiveLock);
1280 : :
1281 : : /* Last known rel state. */
1282 : 22 : state = GetSubscriptionRelState(sub->oid, relid, &statelsn);
1283 : :
1284 : 22 : RemoveSubscriptionRel(sub->oid, relid);
1285 : :
308 1286 : 22 : remove_rel->relid = relid;
1287 : 22 : remove_rel->state = state;
1288 : :
1289 : 22 : sub_remove_rels = lappend(sub_remove_rels, remove_rel);
1290 : :
303 1291 : 22 : logicalrep_worker_stop(WORKERTYPE_TABLESYNC, sub->oid, relid);
1292 : :
1293 : : /*
1294 : : * For READY state, we would have already dropped the
1295 : : * tablesync origin.
1296 : : */
1445 1297 [ + + ]: 22 : if (state != SUBREL_STATE_READY)
1298 : : {
1299 : : char originname[NAMEDATALEN];
1300 : :
1301 : : /*
1302 : : * Drop the tablesync's origin tracking if exists.
1303 : : *
1304 : : * It is possible that the origin is not yet created for
1305 : : * tablesync worker, this can happen for the states before
1306 : : * SUBREL_STATE_DATASYNC. The tablesync worker or apply
1307 : : * worker can also concurrently try to drop the origin and
1308 : : * by this time the origin might be already removed. For
1309 : : * these reasons, passing missing_ok = true.
1310 : : */
1416 1311 : 1 : ReplicationOriginNameForLogicalRep(sub->oid, relid, originname,
1312 : : sizeof(originname));
2022 1313 : 1 : replorigin_drop_by_name(originname, true, false);
1314 : : }
1315 : :
1316 [ + + ]: 22 : ereport(DEBUG1,
1317 : : (errmsg_internal("table \"%s.%s\" removed from subscription \"%s\"",
1318 : : get_namespace_name(get_rel_namespace(relid)),
1319 : : get_rel_name(relid),
1320 : : sub->name)));
1321 : : }
1322 : : }
1323 : :
1324 : : /*
1325 : : * Next remove state for sequences we should not care about anymore
1326 : : * using the data we collected above
1327 : : */
308 1328 [ + + ]: 49 : for (off = 0; off < seq_count; off++)
1329 : : {
1330 : 10 : Oid relid = subseq_local_oids[off];
1331 : :
1332 [ + + ]: 10 : if (!bsearch(&relid, pubrel_local_oids,
1333 : 10 : list_length(pubrels), sizeof(Oid), oid_cmp))
1334 : : {
1335 : : /*
1336 : : * This locking ensures that the state of rels won't change
1337 : : * till we are done with this refresh operation.
1338 : : */
1339 [ - + ]: 1 : if (!rel)
308 akapila@postgresql.o 1340 :UBC 0 : rel = table_open(SubscriptionRelRelationId, AccessExclusiveLock);
1341 : :
308 akapila@postgresql.o 1342 :CBC 1 : RemoveSubscriptionRel(sub->oid, relid);
1343 : :
1344 [ - + ]: 1 : ereport(DEBUG1,
1345 : : errmsg_internal("sequence \"%s.%s\" removed from subscription \"%s\"",
1346 : : get_namespace_name(get_rel_namespace(relid)),
1347 : : get_rel_name(relid),
1348 : : sub->name));
1349 : : }
1350 : : }
1351 : :
1352 : : /*
1353 : : * Drop the tablesync slots associated with removed tables. This has
1354 : : * to be at the end because otherwise if there is an error while doing
1355 : : * the database operations we won't be able to rollback dropped slots.
1356 : : */
31 1357 [ + + + + : 100 : foreach_ptr(SubRemoveRels, sub_remove_rel, sub_remove_rels)
+ + ]
1358 : : {
1359 [ + + ]: 22 : if (sub_remove_rel->state != SUBREL_STATE_READY &&
1360 [ + - ]: 1 : sub_remove_rel->state != SUBREL_STATE_SYNCDONE)
1361 : : {
1362 : 1 : char syncslotname[NAMEDATALEN] = {0};
1363 : :
1364 : : /*
1365 : : * For READY/SYNCDONE states we know the tablesync slot has
1366 : : * already been dropped by the tablesync worker.
1367 : : *
1368 : : * For other states, there is no certainty, maybe the slot
1369 : : * does not exist yet. Also, if we fail after removing some of
1370 : : * the slots, next time, it will again try to drop already
1371 : : * dropped slots and fail. For these reasons, we allow
1372 : : * missing_ok = true for the drop.
1373 : : */
1374 : 1 : ReplicationSlotNameForTablesync(sub->oid, sub_remove_rel->relid,
1375 : : syncslotname, sizeof(syncslotname));
1376 : 1 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
1377 : : }
1378 : : }
1379 : : }
2022 akapila@postgresql.o 1380 :UBC 0 : PG_FINALLY();
1381 : : {
1938 alvherre@alvh.no-ip. 1382 :CBC 39 : walrcv_disconnect(wrconn);
1383 : : }
2022 akapila@postgresql.o 1384 [ - + ]: 39 : PG_END_TRY();
1385 : :
1386 [ + + ]: 39 : if (rel)
1387 : 10 : table_close(rel, NoLock);
3444 peter_e@gmx.net 1388 : 39 : }
1389 : :
1390 : : /*
1391 : : * Marks all sequences with INIT state.
1392 : : */
1393 : : static void
22 jdavis@postgresql.or 1394 : 5 : AlterSubscription_refresh_seq(Subscription *sub, char *conninfo)
1395 : : {
308 akapila@postgresql.o 1396 : 5 : char *err = NULL;
1397 : : WalReceiverConn *wrconn;
1398 : : bool must_use_password;
1399 : : List *subrel_states;
1400 : :
1401 : : /*
1402 : : * Should not happen: CREATE/ALTER/DROP SUBSCRIPTION did not call
1403 : : * SubscriptionConninfo() in a path where it's required.
1404 : : */
22 jdavis@postgresql.or 1405 [ - + ]: 5 : if (!conninfo)
22 jdavis@postgresql.or 1406 [ # # ]:UBC 0 : elog(ERROR, "no connection string provided for subscription");
1407 : :
1408 : : /* Load the library providing us libpq calls. */
308 akapila@postgresql.o 1409 :CBC 5 : load_file("libpqwalreceiver", false);
1410 : :
1411 : : /* Try to connect to the publisher. */
1412 [ + - - + ]: 5 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
22 jdavis@postgresql.or 1413 : 5 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
1414 : : sub->name, &err);
308 akapila@postgresql.o 1415 [ - + ]: 5 : if (!wrconn)
308 akapila@postgresql.o 1416 [ # # ]:UBC 0 : ereport(ERROR,
1417 : : errcode(ERRCODE_CONNECTION_FAILURE),
1418 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
1419 : : sub->name, err));
1420 : :
1421 : : /* The publisher connection is only needed for the origin check. */
308 akapila@postgresql.o 1422 [ + - ]:CBC 5 : PG_TRY();
1423 : : {
1424 : : /*
1425 : : * Sequence synchronization depends on publisher-side functionality
1426 : : * introduced in PostgreSQL 19, so it cannot work against an older
1427 : : * publisher.
1428 : : */
35 1429 [ - + ]: 5 : if (walrcv_server_version(wrconn) < 190000)
35 akapila@postgresql.o 1430 [ # # ]:UBC 0 : ereport(ERROR,
1431 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1432 : : errmsg("cannot synchronize sequences if the publisher is running a version earlier than PostgreSQL 19"));
1433 : :
308 akapila@postgresql.o 1434 :CBC 5 : check_publications_origin_sequences(wrconn, sub->publications, true,
1435 : : sub->origin, NULL, 0, sub->name);
1436 : : }
308 akapila@postgresql.o 1437 :UBC 0 : PG_FINALLY();
1438 : : {
308 akapila@postgresql.o 1439 :CBC 5 : walrcv_disconnect(wrconn);
1440 : : }
1441 [ - + ]: 5 : PG_END_TRY();
1442 : :
1443 : : /*
1444 : : * Reset the sequences to INIT so they get re-synchronized with the latest
1445 : : * publisher values.
1446 : : *
1447 : : * A sequence sync worker may already be running. If it has fetched a
1448 : : * sequence's value from the publisher but not yet marked it READY, it
1449 : : * must not be allowed to complete that update, as it would overwrite the
1450 : : * reset below with a stale value and silently lose this refresh request.
1451 : : * So we stop any running sequence sync worker before resetting the
1452 : : * states.
1453 : : *
1454 : : * This is race-free because AlterSubscription() already holds
1455 : : * AccessExclusiveLock on the subscription object. That lock blocks a
1456 : : * running worker's update of sequence state to READY, see
1457 : : * UpdateSubscriptionRelState() which takes AccessShareLock on the object.
1458 : : * It also blocks any worker the apply worker re-launches, because a new
1459 : : * worker takes AccessShareLock on the object before it reads
1460 : : * pg_subscription_rel, see InitializeLogRepWorker(). Such a worker cannot
1461 : : * act on the states until we commit, by which time they are reset to INIT
1462 : : * and it will sync the latest values.
1463 : : */
1464 : : #ifdef USE_ASSERT_CHECKING
1465 : : {
1466 : : LOCKTAG tag;
1467 : :
38 1468 : 5 : SET_LOCKTAG_OBJECT(tag, InvalidOid, SubscriptionRelationId, sub->oid, 0);
1469 [ - + ]: 5 : Assert(LockHeldByMe(&tag, AccessExclusiveLock, true));
1470 : : }
1471 : : #endif
1472 : :
1473 : 5 : logicalrep_worker_stop(WORKERTYPE_SEQUENCESYNC, sub->oid, InvalidOid);
1474 : :
1475 : : /* Reset every local sequence of this subscription to INIT. */
1476 : 5 : subrel_states = GetSubscriptionRelations(sub->oid, false, true, false);
1477 [ + - + + : 31 : foreach_ptr(SubscriptionRelState, subrel, subrel_states)
+ + ]
1478 : : {
1479 : 21 : Oid relid = subrel->relid;
1480 : :
1481 : 21 : UpdateSubscriptionRelState(sub->oid, relid, SUBREL_STATE_INIT,
1482 : : InvalidXLogRecPtr, false);
1483 [ - + ]: 21 : ereport(DEBUG1,
1484 : : errmsg_internal("sequence \"%s.%s\" of subscription \"%s\" set to INIT state",
1485 : : get_namespace_name(get_rel_namespace(relid)),
1486 : : get_rel_name(relid),
1487 : : sub->name));
1488 : : }
308 1489 : 5 : }
1490 : :
1491 : : /*
1492 : : * Common checks for altering failover, two_phase, and retain_dead_tuples
1493 : : * options.
1494 : : */
1495 : : static void
764 1496 : 14 : CheckAlterSubOption(Subscription *sub, const char *option,
1497 : : bool slot_needs_update, bool isTopLevel)
1498 : : {
400 1499 [ + + + + : 14 : Assert(strcmp(option, "failover") == 0 ||
- + ]
1500 : : strcmp(option, "two_phase") == 0 ||
1501 : : strcmp(option, "retain_dead_tuples") == 0);
1502 : :
1503 : : /*
1504 : : * Altering the retain_dead_tuples option does not update the slot on the
1505 : : * publisher.
1506 : : */
1507 [ + + - + ]: 14 : Assert(!slot_needs_update || strcmp(option, "retain_dead_tuples") != 0);
1508 : :
1509 : : /*
1510 : : * Do not allow changing the option if the subscription is enabled. This
1511 : : * is because both failover and two_phase options of the slot on the
1512 : : * publisher cannot be modified if the slot is currently acquired by the
1513 : : * existing walsender.
1514 : : *
1515 : : * Note that two_phase is enabled (aka changed from 'false' to 'true') on
1516 : : * the publisher by the existing walsender, so we could have allowed that
1517 : : * even when the subscription is enabled. But we kept this restriction for
1518 : : * the sake of consistency and simplicity.
1519 : : *
1520 : : * Additionally, do not allow changing the retain_dead_tuples option when
1521 : : * the subscription is enabled to prevent race conditions arising from the
1522 : : * new option value being acknowledged asynchronously by the launcher and
1523 : : * apply workers.
1524 : : *
1525 : : * Without the restriction, a race condition may arise when a user
1526 : : * disables and immediately re-enables the retain_dead_tuples option. In
1527 : : * this case, the launcher might drop the slot upon noticing the disabled
1528 : : * action, while the apply worker may keep maintaining
1529 : : * oldest_nonremovable_xid without noticing the option change. During this
1530 : : * period, a transaction ID wraparound could falsely make this ID appear
1531 : : * as if it originates from the future w.r.t the transaction ID stored in
1532 : : * the slot maintained by launcher.
1533 : : *
1534 : : * Similarly, if the user enables retain_dead_tuples concurrently with the
1535 : : * launcher starting the worker, the apply worker may start calculating
1536 : : * oldest_nonremovable_xid before the launcher notices the enable action.
1537 : : * Consequently, the launcher may update slot.xmin to a newer value than
1538 : : * that maintained by the worker. In subsequent cycles, upon integrating
1539 : : * the worker's oldest_nonremovable_xid, the launcher might detect a
1540 : : * retreat in the calculated xmin, necessitating additional handling.
1541 : : *
1542 : : * XXX To address the above race conditions, we can define
1543 : : * oldest_nonremovable_xid as FullTransactionId and adds the check to
1544 : : * disallow retreating the conflict slot's xmin. For now, we kept the
1545 : : * implementation simple by disallowing change to the retain_dead_tuples,
1546 : : * but in the future we can change this after some more analysis.
1547 : : *
1548 : : * Note that we could restrict only the enabling of retain_dead_tuples to
1549 : : * avoid the race conditions described above, but we maintain the
1550 : : * restriction for both enable and disable operations for the sake of
1551 : : * consistency.
1552 : : */
764 1553 [ + + ]: 14 : if (sub->enabled)
1554 [ + - ]: 2 : ereport(ERROR,
1555 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1556 : : errmsg("cannot set option \"%s\" for enabled subscription",
1557 : : option)));
1558 : :
1559 [ + + ]: 12 : if (slot_needs_update)
1560 : : {
1561 : : StringInfoData cmd;
1562 : :
1563 : : /*
1564 : : * A valid slot must be associated with the subscription for us to
1565 : : * modify any of the slot's properties.
1566 : : */
1567 [ - + ]: 9 : if (!sub->slotname)
764 akapila@postgresql.o 1568 [ # # ]:UBC 0 : ereport(ERROR,
1569 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1570 : : errmsg("cannot set option \"%s\" for a subscription that does not have a slot name",
1571 : : option)));
1572 : :
1573 : : /* The changed option of the slot can't be rolled back. */
764 akapila@postgresql.o 1574 :CBC 9 : initStringInfo(&cmd);
1575 : 9 : appendStringInfo(&cmd, "ALTER SUBSCRIPTION ... SET (%s)", option);
1576 : :
1577 : 9 : PreventInTransactionBlock(isTopLevel, cmd.data);
1578 : 5 : pfree(cmd.data);
1579 : : }
1580 : 8 : }
1581 : :
1582 : : /*
1583 : : * alter_sub_conflict_log_dest
1584 : : *
1585 : : * When the subscription's 'conflict_log_destination' is changed, update the
1586 : : * conflict log table if required.
1587 : : *
1588 : : * If the new destination no longer requires a conflict log table, the existing
1589 : : * conflict log table associated with the subscription is removed via internal
1590 : : * dependency cleanup to prevent orphaned relations.
1591 : : *
1592 : : * On success, *conflicttablerelid is set to the OID of the conflict log table
1593 : : * that was created or validated, or to InvalidOid if no table is required.
1594 : : *
1595 : : * Returns true if the subscription's conflict log table reference must be
1596 : : * updated as a result of the destination change; false otherwise.
1597 : : */
1598 : : static bool
56 akapila@postgresql.o 1599 :GNC 12 : alter_sub_conflict_log_dest(Subscription *sub, ConflictLogDest oldlogdest,
1600 : : ConflictLogDest newlogdest,
1601 : : Oid *conflicttablerelid)
1602 : : {
1603 : : bool want_table;
1604 : : bool has_oldtable;
1605 : 12 : bool update_relid = false;
1606 : 12 : Oid relid = InvalidOid;
1607 : :
1608 [ + + + + ]: 12 : want_table = CONFLICTS_LOGGED_TO_TABLE(newlogdest);
1609 [ + + + + ]: 12 : has_oldtable = CONFLICTS_LOGGED_TO_TABLE(oldlogdest);
1610 : :
1611 [ + + ]: 12 : if (has_oldtable)
1612 : : {
1613 : : /* There is a conflict log table already. */
1614 [ + + ]: 8 : if (!want_table)
1615 : : {
1616 : 4 : drop_sub_conflict_log_table(sub->oid, sub->name,
1617 : : sub->conflictlogrelid);
1618 : 4 : update_relid = true;
1619 : : }
1620 : : }
1621 : : else
1622 : : {
1623 : : /* There was no previous conflict log table. */
1624 [ + - ]: 4 : if (want_table)
1625 : : {
1626 : : ObjectAddress cltaddr;
1627 : : ObjectAddress subobj;
1628 : :
1629 : 4 : relid = create_conflict_log_table(sub->oid, sub->name, sub->owner);
1630 : 4 : update_relid = true;
1631 : :
1632 : : /*
1633 : : * Establish an internal dependency between the conflict log table
1634 : : * and the subscription. For details refer comments in
1635 : : * CreateSubscription function.
1636 : : */
1637 : 4 : ObjectAddressSet(cltaddr, RelationRelationId, relid);
1638 : 4 : ObjectAddressSet(subobj, SubscriptionRelationId, sub->oid);
1639 : 4 : recordDependencyOn(&cltaddr, &subobj, DEPENDENCY_INTERNAL);
1640 : : }
1641 : : }
1642 : :
1643 : 12 : *conflicttablerelid = relid;
1644 : 12 : return update_relid;
1645 : : }
1646 : :
1647 : : /*
1648 : : * Alter the existing subscription.
1649 : : */
1650 : : ObjectAddress
1869 dean.a.rasheed@gmail 1651 :CBC 443 : AlterSubscription(ParseState *pstate, AlterSubscriptionStmt *stmt,
1652 : : bool isTopLevel)
1653 : : {
1654 : : Relation rel;
1655 : : ObjectAddress myself;
1656 : : bool nulls[Natts_pg_subscription];
1657 : : bool replaces[Natts_pg_subscription];
1658 : : Datum values[Natts_pg_subscription];
1659 : : HeapTuple tup;
1660 : : Oid subid;
22 jdavis@postgresql.or 1661 : 443 : bool orig_conninfo_needed = false;
3444 peter_e@gmx.net 1662 : 443 : bool update_tuple = false;
764 akapila@postgresql.o 1663 : 443 : bool update_failover = false;
1664 : 443 : bool update_two_phase = false;
400 1665 : 443 : bool check_pub_rdt = false;
1666 : : bool retain_dead_tuples;
1667 : : int max_retention;
1668 : : bool retention_active;
104 jdavis@postgresql.or 1669 : 443 : char *new_conninfo = NULL;
22 1670 : 443 : char *orig_conninfo = NULL;
1671 : : char *origin;
1672 : : Subscription *sub;
1673 : : Form_pg_subscription form;
1674 : : uint32 supported_opts;
1878 akapila@postgresql.o 1675 : 443 : SubOpts opts = {0};
1676 : :
2775 andres@anarazel.de 1677 : 443 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
1678 : :
1679 : : /* Fetch the existing tuple. */
384 peter@eisentraut.org 1680 : 443 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
1681 : : CStringGetDatum(stmt->subname));
1682 : :
3507 peter_e@gmx.net 1683 [ + + ]: 443 : if (!HeapTupleIsValid(tup))
1684 [ + - ]: 4 : ereport(ERROR,
1685 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
1686 : : errmsg("subscription \"%s\" does not exist",
1687 : : stmt->subname)));
1688 : :
2837 andres@anarazel.de 1689 : 439 : form = (Form_pg_subscription) GETSTRUCT(tup);
1690 : 439 : subid = form->oid;
1691 : :
1692 : : /* must be owner */
1383 peter@eisentraut.org 1693 [ - + ]: 439 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
3190 peter_e@gmx.net 1694 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
3507 1695 : 0 : stmt->subname);
1696 : :
1697 : : /* parse and check options */
71 jdavis@postgresql.or 1698 [ + + + + :CBC 439 : switch (stmt->kind)
+ + + ]
1699 : : {
1700 : 209 : case ALTER_SUBSCRIPTION_OPTIONS:
1701 : 209 : supported_opts = (SUBOPT_SLOT_NAME |
1702 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
1703 : : SUBOPT_STREAMING | SUBOPT_TWOPHASE_COMMIT |
1704 : : SUBOPT_DISABLE_ON_ERR |
1705 : : SUBOPT_PASSWORD_REQUIRED |
1706 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER |
1707 : : SUBOPT_RETAIN_DEAD_TUPLES |
1708 : : SUBOPT_MAX_RETENTION_DURATION |
1709 : : SUBOPT_WAL_RECEIVER_TIMEOUT |
1710 : : SUBOPT_ORIGIN |
1711 : : SUBOPT_CONFLICT_LOG_DEST);
1712 : 209 : break;
1713 : :
1714 : 87 : case ALTER_SUBSCRIPTION_ENABLED:
1715 : 87 : supported_opts = SUBOPT_ENABLED;
1716 : 87 : break;
1717 : :
1718 : 23 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
1719 : 23 : supported_opts = SUBOPT_COPY_DATA | SUBOPT_REFRESH;
1720 : 23 : break;
1721 : :
1722 : 35 : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
1723 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
1724 : 35 : supported_opts = SUBOPT_REFRESH | SUBOPT_COPY_DATA;
1725 : 35 : break;
1726 : :
1727 : 42 : case ALTER_SUBSCRIPTION_REFRESH_PUBLICATION:
1728 : 42 : supported_opts = SUBOPT_COPY_DATA;
1729 : 42 : break;
1730 : :
1731 : 15 : case ALTER_SUBSCRIPTION_SKIP:
1732 : 15 : supported_opts = SUBOPT_LSN;
1733 : 15 : break;
1734 : :
1735 : 28 : default:
1736 : 28 : supported_opts = 0;
1737 : 28 : break;
1738 : : }
1739 : :
1740 [ + + ]: 439 : if (supported_opts > 0)
1741 : 411 : parse_subscription_options(pstate, stmt->options, supported_opts, &opts);
1742 : :
22 1743 : 415 : sub = GetSubscription(subid, false);
1744 : :
1745 : : /*
1746 : : * Determine in advance whether we need the original conninfo or not, so
1747 : : * that errors are generated consistently in cases where we do need it;
1748 : : * and not generated at all if we don't.
1749 : : */
1750 : :
1751 : : /* conninfo needed when refreshing */
1752 [ + + + + ]: 415 : switch (stmt->kind)
1753 : : {
1754 : 47 : case ALTER_SUBSCRIPTION_REFRESH_PUBLICATION:
1755 : : case ALTER_SUBSCRIPTION_REFRESH_SEQUENCES:
1756 : 47 : orig_conninfo_needed = true;
1757 : 47 : break;
1758 : :
1759 : 58 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
1760 : : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
1761 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
1762 : : /* opts.refresh defaults to true when the option is supported */
1763 : 58 : orig_conninfo_needed = opts.refresh;
1764 : 58 : break;
1765 : :
1766 : 189 : case ALTER_SUBSCRIPTION_OPTIONS:
1767 : : {
1768 [ + + ]: 189 : if (sub->slotname)
1769 : : {
1770 [ + + ]: 185 : if (IsSet(opts.specified_opts, SUBOPT_FAILOVER))
1771 : 9 : orig_conninfo_needed = true;
1772 [ + + ]: 185 : if (IsSet(opts.specified_opts, SUBOPT_TWOPHASE_COMMIT) &&
1773 [ + + ]: 3 : !opts.twophase)
1774 : 1 : orig_conninfo_needed = true;
1775 : : }
1776 : :
1777 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES) &&
1778 [ + - ]: 2 : opts.retaindeadtuples)
1779 : 2 : orig_conninfo_needed = true;
1780 : :
1781 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_ORIGIN))
1782 : : {
1783 : : bool rdt;
1784 : :
1785 : 12 : rdt = IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES) ?
1786 [ - + ]: 6 : opts.retaindeadtuples : sub->retaindeadtuples;
1787 : :
1788 [ + + + + ]: 6 : if (rdt && pg_strcasecmp(opts.origin, LOGICALREP_ORIGIN_ANY) == 0)
1789 : 1 : orig_conninfo_needed = true;
1790 : : }
1791 : : }
1792 : 189 : break;
1793 : :
1794 : 121 : default:
1795 : 121 : break;
1796 : : }
1797 : :
1798 [ + + ]: 415 : if (orig_conninfo_needed)
1799 : 78 : orig_conninfo = SubscriptionConninfo(sub);
1800 : :
400 akapila@postgresql.o 1801 : 411 : retain_dead_tuples = sub->retaindeadtuples;
1802 : 411 : origin = sub->origin;
359 1803 : 411 : max_retention = sub->maxretention;
1804 : 411 : retention_active = sub->retentionactive;
1805 : :
1806 : : /*
1807 : : * Don't allow non-superuser modification of a subscription with
1808 : : * password_required=false.
1809 : : */
1246 rhaas@postgresql.org 1810 [ + + - + ]: 411 : if (!sub->passwordrequired && !superuser())
1246 rhaas@postgresql.org 1811 [ # # ]:UBC 0 : ereport(ERROR,
1812 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1813 : : errmsg("password_required=false is superuser-only"),
1814 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1815 : :
1816 : : /* Lock the subscription so nobody else can do anything with it. */
3342 peter_e@gmx.net 1817 :CBC 411 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
1818 : :
1819 : : /* Form a new tuple. */
3507 1820 : 411 : memset(values, 0, sizeof(values));
1821 : 411 : memset(nulls, false, sizeof(nulls));
1822 : 411 : memset(replaces, false, sizeof(replaces));
1823 : :
174 jdavis@postgresql.or 1824 : 411 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
1825 : :
3444 peter_e@gmx.net 1826 [ + + + + : 411 : switch (stmt->kind)
+ + + + +
- ]
1827 : : {
1828 : 189 : case ALTER_SUBSCRIPTION_OPTIONS:
1829 : : {
1878 akapila@postgresql.o 1830 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_SLOT_NAME))
1831 : : {
1832 : : /*
1833 : : * The subscription must be disabled to allow slot_name as
1834 : : * 'none', otherwise, the apply worker will repeatedly try
1835 : : * to stream the data using that slot_name which neither
1836 : : * exists on the publisher nor the user will be allowed to
1837 : : * create it.
1838 : : */
1839 [ - + - - ]: 72 : if (sub->enabled && !opts.slot_name)
3397 peter_e@gmx.net 1840 [ # # ]:UBC 0 : ereport(ERROR,
1841 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1842 : : errmsg("cannot set %s for enabled subscription",
1843 : : "slot_name = NONE")));
1844 : :
1878 akapila@postgresql.o 1845 [ + + ]:CBC 72 : if (opts.slot_name)
3397 peter_e@gmx.net 1846 : 4 : values[Anum_pg_subscription_subslotname - 1] =
1878 akapila@postgresql.o 1847 : 4 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
1848 : : else
3397 peter_e@gmx.net 1849 : 68 : nulls[Anum_pg_subscription_subslotname - 1] = true;
3422 1850 : 72 : replaces[Anum_pg_subscription_subslotname - 1] = true;
1851 : : }
1852 : :
1878 akapila@postgresql.o 1853 [ + + ]: 189 : if (opts.synchronous_commit)
1854 : : {
3422 peter_e@gmx.net 1855 : 12 : values[Anum_pg_subscription_subsynccommit - 1] =
1878 akapila@postgresql.o 1856 : 12 : CStringGetTextDatum(opts.synchronous_commit);
3422 peter_e@gmx.net 1857 : 12 : replaces[Anum_pg_subscription_subsynccommit - 1] = true;
1858 : : }
1859 : :
1878 akapila@postgresql.o 1860 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_BINARY))
1861 : : {
2231 tgl@sss.pgh.pa.us 1862 : 10 : values[Anum_pg_subscription_subbinary - 1] =
1878 akapila@postgresql.o 1863 : 10 : BoolGetDatum(opts.binary);
2231 tgl@sss.pgh.pa.us 1864 : 10 : replaces[Anum_pg_subscription_subbinary - 1] = true;
1865 : : }
1866 : :
1878 akapila@postgresql.o 1867 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_STREAMING))
1868 : : {
2184 1869 : 18 : values[Anum_pg_subscription_substream - 1] =
1326 1870 : 18 : CharGetDatum(opts.streaming);
2184 1871 : 18 : replaces[Anum_pg_subscription_substream - 1] = true;
1872 : : }
1873 : :
1627 1874 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_DISABLE_ON_ERR))
1875 : : {
1876 : : values[Anum_pg_subscription_subdisableonerr - 1]
1877 : 12 : = BoolGetDatum(opts.disableonerr);
1878 : : replaces[Anum_pg_subscription_subdisableonerr - 1]
1879 : 12 : = true;
1880 : : }
1881 : :
1246 rhaas@postgresql.org 1882 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_PASSWORD_REQUIRED))
1883 : : {
1884 : : /* Non-superuser may not disable password_required. */
1885 [ + + - + ]: 8 : if (!opts.passwordrequired && !superuser())
1246 rhaas@postgresql.org 1886 [ # # ]:UBC 0 : ereport(ERROR,
1887 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1888 : : errmsg("password_required=false is superuser-only"),
1889 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1890 : :
1891 : : values[Anum_pg_subscription_subpasswordrequired - 1]
1246 rhaas@postgresql.org 1892 :CBC 8 : = BoolGetDatum(opts.passwordrequired);
1893 : : replaces[Anum_pg_subscription_subpasswordrequired - 1]
1894 : 8 : = true;
1895 : : }
1896 : :
1079 akapila@postgresql.o 1897 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_RUN_AS_OWNER))
1898 : : {
1899 : 9 : values[Anum_pg_subscription_subrunasowner - 1] =
1900 : 9 : BoolGetDatum(opts.runasowner);
1901 : 9 : replaces[Anum_pg_subscription_subrunasowner - 1] = true;
1902 : : }
1903 : :
764 1904 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_TWOPHASE_COMMIT))
1905 : : {
1906 : : /*
1907 : : * We need to update both the slot and the subscription
1908 : : * for the two_phase option. We can enable the two_phase
1909 : : * option for a slot only once the initial data
1910 : : * synchronization is done. This is to avoid missing some
1911 : : * data as explained in comments atop worker.c.
1912 : : */
1913 : 3 : update_two_phase = !opts.twophase;
1914 : :
1915 : 3 : CheckAlterSubOption(sub, "two_phase", update_two_phase,
1916 : : isTopLevel);
1917 : :
1918 : : /*
1919 : : * Modifying the two_phase slot option requires a slot
1920 : : * lookup by slot name, so changing the slot name at the
1921 : : * same time is not allowed.
1922 : : */
1923 [ + + ]: 3 : if (update_two_phase &&
1924 [ - + ]: 1 : IsSet(opts.specified_opts, SUBOPT_SLOT_NAME))
764 akapila@postgresql.o 1925 [ # # ]:UBC 0 : ereport(ERROR,
1926 : : (errcode(ERRCODE_SYNTAX_ERROR),
1927 : : errmsg("\"slot_name\" and \"two_phase\" cannot be altered at the same time")));
1928 : :
1929 : : /*
1930 : : * Note that workers may still survive even if the
1931 : : * subscription has been disabled.
1932 : : *
1933 : : * Ensure workers have already been exited to avoid
1934 : : * getting prepared transactions while we are disabling
1935 : : * the two_phase option. Otherwise, the changes of an
1936 : : * already prepared transaction can be replicated again
1937 : : * along with its corresponding commit, leading to
1938 : : * duplicate data or errors.
1939 : : */
764 akapila@postgresql.o 1940 [ - + ]:CBC 3 : if (logicalrep_workers_find(subid, true, true))
940 akapila@postgresql.o 1941 [ # # ]:UBC 0 : ereport(ERROR,
1942 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1943 : : errmsg("cannot alter \"two_phase\" when logical replication worker is still running"),
1944 : : errhint("Try again after some time.")));
1945 : :
1946 : : /*
1947 : : * two_phase cannot be disabled if there are any
1948 : : * uncommitted prepared transactions present otherwise it
1949 : : * can lead to duplicate data or errors as explained in
1950 : : * the comment above.
1951 : : */
764 akapila@postgresql.o 1952 [ + + ]:CBC 3 : if (update_two_phase &&
1953 [ + - ]: 1 : sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED &&
1954 [ - + ]: 1 : LookupGXactBySubid(subid))
940 akapila@postgresql.o 1955 [ # # ]:UBC 0 : ereport(ERROR,
1956 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1957 : : errmsg("cannot disable \"two_phase\" when prepared transactions exist"),
1958 : : errhint("Resolve these transactions and try again.")));
1959 : :
1960 : : /* Change system catalog accordingly */
764 akapila@postgresql.o 1961 :CBC 3 : values[Anum_pg_subscription_subtwophasestate - 1] =
1962 [ + + ]: 3 : CharGetDatum(opts.twophase ?
1963 : : LOGICALREP_TWOPHASE_STATE_PENDING :
1964 : : LOGICALREP_TWOPHASE_STATE_DISABLED);
1965 : 3 : replaces[Anum_pg_subscription_subtwophasestate - 1] = true;
1966 : : }
1967 : :
1968 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_FAILOVER))
1969 : : {
1970 : : /*
1971 : : * Similar to the two_phase case above, we need to update
1972 : : * the failover option for both the slot and the
1973 : : * subscription.
1974 : : */
1975 : 9 : update_failover = true;
1976 : :
1977 : 9 : CheckAlterSubOption(sub, "failover", update_failover,
1978 : : isTopLevel);
1979 : :
940 1980 : 4 : values[Anum_pg_subscription_subfailover - 1] =
1981 : 4 : BoolGetDatum(opts.failover);
1982 : 4 : replaces[Anum_pg_subscription_subfailover - 1] = true;
1983 : : }
1984 : :
400 1985 [ + + ]: 184 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES))
1986 : : {
1987 : 2 : values[Anum_pg_subscription_subretaindeadtuples - 1] =
1988 : 2 : BoolGetDatum(opts.retaindeadtuples);
1989 : 2 : replaces[Anum_pg_subscription_subretaindeadtuples - 1] = true;
1990 : :
1991 : : /*
1992 : : * Update the retention status only if there's a change in
1993 : : * the retain_dead_tuples option value.
1994 : : *
1995 : : * Automatically marking retention as active when
1996 : : * retain_dead_tuples is enabled may not always be ideal,
1997 : : * especially if retention was previously stopped and the
1998 : : * user toggles retain_dead_tuples without adjusting the
1999 : : * publisher workload. However, this behavior provides a
2000 : : * convenient way for users to manually refresh the
2001 : : * retention status. Since retention will be stopped again
2002 : : * unless the publisher workload is reduced, this approach
2003 : : * is acceptable for now.
2004 : : */
359 2005 [ + - ]: 2 : if (opts.retaindeadtuples != sub->retaindeadtuples)
2006 : : {
2007 : 2 : values[Anum_pg_subscription_subretentionactive - 1] =
2008 : 2 : BoolGetDatum(opts.retaindeadtuples);
2009 : 2 : replaces[Anum_pg_subscription_subretentionactive - 1] = true;
2010 : :
2011 : 2 : retention_active = opts.retaindeadtuples;
2012 : : }
2013 : :
400 2014 : 2 : CheckAlterSubOption(sub, "retain_dead_tuples", false, isTopLevel);
2015 : :
2016 : : /*
2017 : : * Workers may continue running even after the
2018 : : * subscription has been disabled.
2019 : : *
2020 : : * To prevent race conditions (as described in
2021 : : * CheckAlterSubOption()), ensure that all worker
2022 : : * processes have already exited before proceeding.
2023 : : */
2024 [ - + ]: 1 : if (logicalrep_workers_find(subid, true, true))
400 akapila@postgresql.o 2025 [ # # ]:UBC 0 : ereport(ERROR,
2026 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2027 : : errmsg("cannot alter option \"%s\" when logical replication worker is still running",
2028 : : "retain_dead_tuples"),
2029 : : errhint("Try again after some time.")));
2030 : :
2031 : : /*
2032 : : * Notify the launcher to manage the replication slot for
2033 : : * conflict detection. This ensures that replication slot
2034 : : * is efficiently handled (created, updated, or dropped)
2035 : : * in response to any configuration changes.
2036 : : */
400 akapila@postgresql.o 2037 :CBC 1 : ApplyLauncherWakeupAtCommit();
2038 : :
2039 : 1 : check_pub_rdt = opts.retaindeadtuples;
2040 : 1 : retain_dead_tuples = opts.retaindeadtuples;
2041 : : }
2042 : :
359 2043 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_MAX_RETENTION_DURATION))
2044 : : {
2045 : 6 : values[Anum_pg_subscription_submaxretention - 1] =
2046 : 6 : Int32GetDatum(opts.maxretention);
2047 : 6 : replaces[Anum_pg_subscription_submaxretention - 1] = true;
2048 : :
2049 : 6 : max_retention = opts.maxretention;
2050 : : }
2051 : :
2052 : : /*
2053 : : * Ensure that system configuration parameters are set
2054 : : * appropriately to support retain_dead_tuples and
2055 : : * max_retention_duration.
2056 : : */
2057 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES) ||
2058 [ + + ]: 182 : IsSet(opts.specified_opts, SUBOPT_MAX_RETENTION_DURATION))
2059 : 7 : CheckSubDeadTupleRetention(true, !sub->enabled, NOTICE,
2060 : : retain_dead_tuples,
2061 : : retention_active,
2062 : 7 : (max_retention > 0));
2063 : :
1498 2064 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_ORIGIN))
2065 : : {
2066 : 6 : values[Anum_pg_subscription_suborigin - 1] =
2067 : 6 : CStringGetTextDatum(opts.origin);
2068 : 6 : replaces[Anum_pg_subscription_suborigin - 1] = true;
2069 : :
2070 : : /*
2071 : : * Check if changes from different origins may be received
2072 : : * from the publisher when the origin is changed to ANY
2073 : : * and retain_dead_tuples is enabled. Use |= so that we
2074 : : * don't clear the flag already set when
2075 : : * retain_dead_tuples was changed in the same command.
2076 : : */
80 2077 [ + + ]: 8 : check_pub_rdt |= retain_dead_tuples &&
400 2078 [ + + ]: 2 : pg_strcasecmp(opts.origin, LOGICALREP_ORIGIN_ANY) == 0;
2079 : :
2080 : 6 : origin = opts.origin;
2081 : : }
2082 : :
188 fujii@postgresql.org 2083 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_WAL_RECEIVER_TIMEOUT))
2084 : : {
2085 : 8 : values[Anum_pg_subscription_subwalrcvtimeout - 1] =
2086 : 8 : CStringGetTextDatum(opts.wal_receiver_timeout);
2087 : 8 : replaces[Anum_pg_subscription_subwalrcvtimeout - 1] = true;
2088 : : }
2089 : :
56 akapila@postgresql.o 2090 [ + + ]:GNC 183 : if (IsSet(opts.specified_opts, SUBOPT_CONFLICT_LOG_DEST))
2091 : : {
2092 : : ConflictLogDest old_dest =
2093 : 16 : GetConflictLogDest(sub->conflictlogdest);
2094 : :
2095 [ + + ]: 16 : if (opts.conflictlogdest != old_dest)
2096 : : {
2097 : : bool update_relid;
2098 : 12 : Oid relid = InvalidOid;
2099 : :
2100 : 12 : values[Anum_pg_subscription_subconflictlogdest - 1] =
2101 : 12 : CStringGetTextDatum(ConflictLogDestNames[opts.conflictlogdest]);
2102 : 12 : replaces[Anum_pg_subscription_subconflictlogdest - 1] = true;
2103 : :
2104 : 12 : update_relid = alter_sub_conflict_log_dest(sub,
2105 : : old_dest,
2106 : : opts.conflictlogdest,
2107 : : &relid);
2108 [ + + ]: 12 : if (update_relid)
2109 : : {
2110 : 8 : values[Anum_pg_subscription_subconflictlogrelid - 1] =
2111 : 8 : ObjectIdGetDatum(relid);
2112 : 8 : replaces[Anum_pg_subscription_subconflictlogrelid - 1] =
2113 : : true;
2114 : : }
2115 : : }
2116 : : }
2117 : :
3444 peter_e@gmx.net 2118 :CBC 183 : update_tuple = true;
2119 : 183 : break;
2120 : : }
2121 : :
2122 : 87 : case ALTER_SUBSCRIPTION_ENABLED:
2123 : : {
1878 akapila@postgresql.o 2124 [ - + ]: 87 : Assert(IsSet(opts.specified_opts, SUBOPT_ENABLED));
2125 : :
2126 [ + + + - ]: 87 : if (!sub->slotname && opts.enabled)
3397 peter_e@gmx.net 2127 [ + - ]: 4 : ereport(ERROR,
2128 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2129 : : errmsg("cannot enable subscription that does not have a slot name")));
2130 : :
2131 : : /*
2132 : : * Check track_commit_timestamp only when enabling the
2133 : : * subscription in case it was disabled after creation. See
2134 : : * comments atop CheckSubDeadTupleRetention() for details.
2135 : : */
359 akapila@postgresql.o 2136 : 83 : CheckSubDeadTupleRetention(opts.enabled, !opts.enabled,
2137 : 83 : WARNING, sub->retaindeadtuples,
2138 : 83 : sub->retentionactive, false);
2139 : :
3444 peter_e@gmx.net 2140 : 83 : values[Anum_pg_subscription_subenabled - 1] =
1878 akapila@postgresql.o 2141 : 83 : BoolGetDatum(opts.enabled);
3444 peter_e@gmx.net 2142 : 83 : replaces[Anum_pg_subscription_subenabled - 1] = true;
2143 : :
1878 akapila@postgresql.o 2144 [ + + ]: 83 : if (opts.enabled)
3411 peter_e@gmx.net 2145 : 34 : ApplyLauncherWakeupAtCommit();
2146 : :
3444 2147 : 83 : update_tuple = true;
2148 : 83 : break;
2149 : : }
2150 : :
174 jdavis@postgresql.or 2151 : 1 : case ALTER_SUBSCRIPTION_SERVER:
2152 : : {
2153 : : ForeignServer *new_server;
2154 : : ObjectAddress referenced;
2155 : : AclResult aclresult;
2156 : :
2157 : : /*
2158 : : * Remove what was there before, either another foreign server
2159 : : * or a connection string.
2160 : : */
2161 [ - + ]: 1 : if (form->subserver)
2162 : : {
174 jdavis@postgresql.or 2163 :UBC 0 : deleteDependencyRecordsForSpecific(SubscriptionRelationId, form->oid,
2164 : : DEPENDENCY_NORMAL,
2165 : : ForeignServerRelationId, form->subserver);
2166 : : }
2167 : : else
2168 : : {
174 jdavis@postgresql.or 2169 :CBC 1 : nulls[Anum_pg_subscription_subconninfo - 1] = true;
2170 : 1 : replaces[Anum_pg_subscription_subconninfo - 1] = true;
2171 : : }
2172 : :
2173 : : /*
2174 : : * Check that the subscription owner has USAGE privileges on
2175 : : * the server.
2176 : : */
2177 : 1 : new_server = GetForeignServerByName(stmt->servername, false);
2178 : 1 : aclresult = object_aclcheck(ForeignServerRelationId,
2179 : : new_server->serverid,
2180 : : form->subowner, ACL_USAGE);
2181 [ - + ]: 1 : if (aclresult != ACLCHECK_OK)
174 jdavis@postgresql.or 2182 [ # # ]:UBC 0 : ereport(ERROR,
2183 : : errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2184 : : errmsg("subscription owner \"%s\" does not have permission on foreign server \"%s\"",
2185 : : GetUserNameFromId(form->subowner, false),
2186 : : new_server->servername));
2187 : :
2188 : : /* check user mapping */
22 jdavis@postgresql.or 2189 :CBC 1 : GetUserMappingExtended(form->subowner, new_server->serverid, WARNING);
2190 : :
104 2191 : 1 : new_conninfo = ForeignServerConnectionString(form->subowner,
2192 : : new_server);
2193 : :
2194 : : /* Load the library providing us libpq calls. */
174 2195 : 1 : load_file("libpqwalreceiver", false);
2196 : : /* Check the connection info string. */
104 2197 [ - + - - ]: 1 : walrcv_check_conninfo(new_conninfo,
2198 : : sub->passwordrequired && !sub->ownersuperuser);
2199 : :
129 peter@eisentraut.org 2200 : 1 : values[Anum_pg_subscription_subserver - 1] = ObjectIdGetDatum(new_server->serverid);
174 jdavis@postgresql.or 2201 : 1 : replaces[Anum_pg_subscription_subserver - 1] = true;
2202 : :
2203 : 1 : ObjectAddressSet(referenced, ForeignServerRelationId, new_server->serverid);
2204 : 1 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
2205 : :
2206 : 1 : update_tuple = true;
2207 : : }
2208 : :
2209 : : /*
2210 : : * Since the remote server configuration might have changed,
2211 : : * perform a check to ensure it permits enabling
2212 : : * retain_dead_tuples.
2213 : : */
104 2214 : 1 : check_pub_rdt = sub->retaindeadtuples;
174 2215 : 1 : break;
2216 : :
3444 peter_e@gmx.net 2217 : 22 : case ALTER_SUBSCRIPTION_CONNECTION:
2218 : : /* remove reference to foreign server and dependencies, if present */
174 jdavis@postgresql.or 2219 [ + + ]: 22 : if (form->subserver)
2220 : : {
2221 : 9 : deleteDependencyRecordsForSpecific(SubscriptionRelationId, form->oid,
2222 : : DEPENDENCY_NORMAL,
2223 : : ForeignServerRelationId, form->subserver);
2224 : :
129 peter@eisentraut.org 2225 : 9 : values[Anum_pg_subscription_subserver - 1] = ObjectIdGetDatum(InvalidOid);
174 jdavis@postgresql.or 2226 : 9 : replaces[Anum_pg_subscription_subserver - 1] = true;
2227 : : }
2228 : :
104 2229 : 22 : new_conninfo = stmt->conninfo;
2230 : :
2231 : : /* Load the library providing us libpq calls. */
3398 peter_e@gmx.net 2232 : 22 : load_file("libpqwalreceiver", false);
2233 : : /* Check the connection info string. */
104 jdavis@postgresql.or 2234 [ + + + + ]: 22 : walrcv_check_conninfo(new_conninfo,
2235 : : sub->passwordrequired && !sub->ownersuperuser);
2236 : :
3444 peter_e@gmx.net 2237 : 18 : values[Anum_pg_subscription_subconninfo - 1] =
2238 : 18 : CStringGetTextDatum(stmt->conninfo);
2239 : 18 : replaces[Anum_pg_subscription_subconninfo - 1] = true;
2240 : 18 : update_tuple = true;
2241 : :
2242 : : /*
2243 : : * Since the remote server configuration might have changed,
2244 : : * perform a check to ensure it permits enabling
2245 : : * retain_dead_tuples.
2246 : : */
400 akapila@postgresql.o 2247 : 18 : check_pub_rdt = sub->retaindeadtuples;
3444 peter_e@gmx.net 2248 : 18 : break;
2249 : :
1969 peter@eisentraut.org 2250 : 23 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
2251 : : {
3444 peter_e@gmx.net 2252 : 23 : values[Anum_pg_subscription_subpublications - 1] =
3389 bruce@momjian.us 2253 : 23 : publicationListToArray(stmt->publication);
3444 peter_e@gmx.net 2254 : 23 : replaces[Anum_pg_subscription_subpublications - 1] = true;
2255 : :
2256 : 23 : update_tuple = true;
2257 : :
2258 : : /* Refresh if user asked us to. */
1878 akapila@postgresql.o 2259 [ + + ]: 23 : if (opts.refresh)
2260 : : {
3397 peter_e@gmx.net 2261 [ - + ]: 15 : if (!sub->enabled)
3397 peter_e@gmx.net 2262 [ # # ]:UBC 0 : ereport(ERROR,
2263 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2264 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
2265 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION ... WITH (refresh = false).")));
2266 : :
2267 : : /*
2268 : : * See ALTER_SUBSCRIPTION_REFRESH_PUBLICATION for details
2269 : : * why this is not allowed.
2270 : : */
1870 akapila@postgresql.o 2271 [ - + - - ]:CBC 15 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1870 akapila@postgresql.o 2272 [ # # ]:UBC 0 : ereport(ERROR,
2273 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2274 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
2275 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
2276 : :
2022 akapila@postgresql.o 2277 :CBC 15 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
2278 : :
2279 : : /* Make sure refresh sees the new list of publications. */
3444 peter_e@gmx.net 2280 : 7 : sub->publications = stmt->publication;
2281 : :
1610 akapila@postgresql.o 2282 : 7 : AlterSubscription_refresh(sub, opts.copy_data,
2283 : : stmt->publication,
2284 : : orig_conninfo);
2285 : : }
2286 : :
3444 peter_e@gmx.net 2287 : 15 : break;
2288 : : }
2289 : :
1969 peter@eisentraut.org 2290 : 35 : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
2291 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
2292 : : {
2293 : : List *publist;
1878 akapila@postgresql.o 2294 : 35 : bool isadd = stmt->kind == ALTER_SUBSCRIPTION_ADD_PUBLICATION;
2295 : :
2296 : 35 : publist = merge_publications(sub->publications, stmt->publication, isadd, stmt->subname);
1969 peter@eisentraut.org 2297 : 11 : values[Anum_pg_subscription_subpublications - 1] =
2298 : 11 : publicationListToArray(publist);
2299 : 11 : replaces[Anum_pg_subscription_subpublications - 1] = true;
2300 : :
2301 : 11 : update_tuple = true;
2302 : :
2303 : : /* Refresh if user asked us to. */
1878 akapila@postgresql.o 2304 [ + + ]: 11 : if (opts.refresh)
2305 : : {
2306 : : /* We only need to validate user specified publications. */
1610 2307 [ + + ]: 3 : List *validate_publications = (isadd) ? stmt->publication : NULL;
2308 : :
1969 peter@eisentraut.org 2309 [ - + ]: 3 : if (!sub->enabled)
1969 peter@eisentraut.org 2310 [ # # # # ]:UBC 0 : ereport(ERROR,
2311 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2312 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
2313 : : /* translator: %s is an SQL ALTER command */
2314 : : errhint("Use %s instead.",
2315 : : isadd ?
2316 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION ... WITH (refresh = false)" :
2317 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION ... WITH (refresh = false)")));
2318 : :
2319 : : /*
2320 : : * See ALTER_SUBSCRIPTION_REFRESH_PUBLICATION for details
2321 : : * why this is not allowed.
2322 : : */
1870 akapila@postgresql.o 2323 [ - + - - ]:CBC 3 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1870 akapila@postgresql.o 2324 [ # # # # ]:UBC 0 : ereport(ERROR,
2325 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2326 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
2327 : : /* translator: %s is an SQL ALTER command */
2328 : : errhint("Use %s with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.",
2329 : : isadd ?
2330 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION" :
2331 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION")));
2332 : :
1969 peter@eisentraut.org 2333 :CBC 3 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
2334 : :
2335 : : /* Refresh the new list of publications. */
1829 akapila@postgresql.o 2336 : 3 : sub->publications = publist;
2337 : :
1610 2338 : 3 : AlterSubscription_refresh(sub, opts.copy_data,
2339 : : validate_publications,
2340 : : orig_conninfo);
2341 : : }
2342 : :
1969 peter@eisentraut.org 2343 : 11 : break;
2344 : : }
2345 : :
316 akapila@postgresql.o 2346 : 38 : case ALTER_SUBSCRIPTION_REFRESH_PUBLICATION:
2347 : : {
3397 peter_e@gmx.net 2348 [ + + ]: 38 : if (!sub->enabled)
2349 [ + - ]: 4 : ereport(ERROR,
2350 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2351 : : errmsg("%s is not allowed for disabled subscriptions",
2352 : : "ALTER SUBSCRIPTION ... REFRESH PUBLICATION")));
2353 : :
2354 : : /*
2355 : : * The subscription option "two_phase" requires that
2356 : : * replication has passed the initial table synchronization
2357 : : * phase before the two_phase becomes properly enabled.
2358 : : *
2359 : : * But, having reached this two-phase commit "enabled" state
2360 : : * we must not allow any subsequent table initialization to
2361 : : * occur. So the ALTER SUBSCRIPTION ... REFRESH PUBLICATION is
2362 : : * disallowed when the user had requested two_phase = on mode.
2363 : : *
2364 : : * The exception to this restriction is when copy_data =
2365 : : * false, because when copy_data is false the tablesync will
2366 : : * start already in READY state and will exit directly without
2367 : : * doing anything.
2368 : : *
2369 : : * For more details see comments atop worker.c.
2370 : : */
1870 akapila@postgresql.o 2371 [ - + - - ]: 34 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1870 akapila@postgresql.o 2372 [ # # ]:UBC 0 : ereport(ERROR,
2373 : : (errcode(ERRCODE_SYNTAX_ERROR),
2374 : : errmsg("ALTER SUBSCRIPTION ... REFRESH PUBLICATION with copy_data is not allowed when two_phase is enabled"),
2375 : : errhint("Use ALTER SUBSCRIPTION ... REFRESH PUBLICATION with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
2376 : :
316 akapila@postgresql.o 2377 :CBC 34 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION ... REFRESH PUBLICATION");
2378 : :
22 jdavis@postgresql.or 2379 : 30 : AlterSubscription_refresh(sub, opts.copy_data, NULL,
2380 : : orig_conninfo);
2381 : :
3444 peter_e@gmx.net 2382 : 29 : break;
2383 : : }
2384 : :
308 akapila@postgresql.o 2385 : 5 : case ALTER_SUBSCRIPTION_REFRESH_SEQUENCES:
2386 : : {
2387 [ - + ]: 5 : if (!sub->enabled)
308 akapila@postgresql.o 2388 [ # # ]:UBC 0 : ereport(ERROR,
2389 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2390 : : errmsg("%s is not allowed for disabled subscriptions",
2391 : : "ALTER SUBSCRIPTION ... REFRESH SEQUENCES"));
2392 : :
22 jdavis@postgresql.or 2393 :CBC 5 : AlterSubscription_refresh_seq(sub, orig_conninfo);
2394 : :
308 akapila@postgresql.o 2395 : 5 : break;
2396 : : }
2397 : :
1619 2398 : 11 : case ALTER_SUBSCRIPTION_SKIP:
2399 : : {
2400 : : /* ALTER SUBSCRIPTION ... SKIP supports only LSN option */
2401 [ - + ]: 11 : Assert(IsSet(opts.specified_opts, SUBOPT_LSN));
2402 : :
2403 : : /*
2404 : : * If the user sets subskiplsn, we do a sanity check to make
2405 : : * sure that the specified LSN is a probable value.
2406 : : */
294 alvherre@kurilemu.de 2407 [ + + ]: 11 : if (XLogRecPtrIsValid(opts.lsn))
2408 : : {
2409 : : ReplOriginId originid;
2410 : : char originname[NAMEDATALEN];
2411 : : XLogRecPtr remote_lsn;
2412 : :
1416 akapila@postgresql.o 2413 : 7 : ReplicationOriginNameForLogicalRep(subid, InvalidOid,
2414 : : originname, sizeof(originname));
1619 2415 : 7 : originid = replorigin_by_name(originname, false);
2416 : 7 : remote_lsn = replorigin_get_progress(originid, false);
2417 : :
2418 : : /* Check the given LSN is at least a future LSN */
294 alvherre@kurilemu.de 2419 [ + + - + ]: 7 : if (XLogRecPtrIsValid(remote_lsn) && opts.lsn < remote_lsn)
1619 akapila@postgresql.o 2420 [ # # ]:UBC 0 : ereport(ERROR,
2421 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2422 : : errmsg("skip WAL location (LSN %X/%08X) must be greater than origin LSN %X/%08X",
2423 : : LSN_FORMAT_ARGS(opts.lsn),
2424 : : LSN_FORMAT_ARGS(remote_lsn))));
2425 : : }
2426 : :
1619 akapila@postgresql.o 2427 :CBC 11 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(opts.lsn);
2428 : 11 : replaces[Anum_pg_subscription_subskiplsn - 1] = true;
2429 : :
2430 : 11 : update_tuple = true;
2431 : 11 : break;
2432 : : }
2433 : :
3444 peter_e@gmx.net 2434 :UBC 0 : default:
2435 [ # # ]: 0 : elog(ERROR, "unrecognized ALTER SUBSCRIPTION kind %d",
2436 : : stmt->kind);
2437 : : }
2438 : :
2439 : : /* Update the catalog if needed. */
3444 peter_e@gmx.net 2440 [ + + ]:CBC 356 : if (update_tuple)
2441 : : {
2442 : 322 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
2443 : : replaces);
2444 : :
2445 : 322 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2446 : :
2447 : 322 : heap_freetuple(tup);
2448 : : }
2449 : :
2450 : : /*
2451 : : * Try to acquire the connection necessary either for modifying the slot
2452 : : * or for checking if the remote server permits enabling
2453 : : * retain_dead_tuples.
2454 : : *
2455 : : * This has to be at the end because otherwise if there is an error while
2456 : : * doing the database operations we won't be able to rollback altered
2457 : : * slot.
2458 : : */
400 akapila@postgresql.o 2459 [ + + + + : 356 : if (update_failover || update_two_phase || check_pub_rdt)
+ + ]
2460 : : {
2461 : : bool must_use_password;
2462 : : char *err;
2463 : : WalReceiverConn *wrconn;
2464 : :
22 jdavis@postgresql.or 2465 [ + - - + ]: 7 : Assert(new_conninfo || orig_conninfo);
2466 : :
2467 : : /* Load the library providing us libpq calls. */
940 akapila@postgresql.o 2468 : 7 : load_file("libpqwalreceiver", false);
2469 : :
2470 : : /*
2471 : : * Try to connect to the publisher, using the new connection string if
2472 : : * available.
2473 : : */
2474 [ + - - + ]: 7 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
22 jdavis@postgresql.or 2475 [ - + ]: 7 : wrconn = walrcv_connect(new_conninfo ? new_conninfo : orig_conninfo,
2476 : : true, true, must_use_password, sub->name,
2477 : : &err);
940 akapila@postgresql.o 2478 [ - + ]: 7 : if (!wrconn)
940 akapila@postgresql.o 2479 [ # # ]:UBC 0 : ereport(ERROR,
2480 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2481 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
2482 : : sub->name, err)));
2483 : :
940 akapila@postgresql.o 2484 [ + - ]:CBC 7 : PG_TRY();
2485 : : {
400 2486 [ + + ]: 7 : if (retain_dead_tuples)
23 2487 : 3 : CheckPubDeadTupleRetention(wrconn);
2488 : :
308 2489 : 7 : check_publications_origin_tables(wrconn, sub->publications, false,
2490 : : retain_dead_tuples, origin, NULL, 0,
2491 : : sub->name);
2492 : :
400 2493 [ + + + + ]: 7 : if (update_failover || update_two_phase)
2494 [ + + + + ]: 5 : walrcv_alter_slot(wrconn, sub->slotname,
2495 : : update_failover ? &opts.failover : NULL,
2496 : : update_two_phase ? &opts.twophase : NULL);
2497 : : }
940 akapila@postgresql.o 2498 :UBC 0 : PG_FINALLY();
2499 : : {
940 akapila@postgresql.o 2500 :CBC 7 : walrcv_disconnect(wrconn);
2501 : : }
2502 [ - + ]: 7 : PG_END_TRY();
2503 : : }
2504 : :
2775 andres@anarazel.de 2505 : 356 : table_close(rel, RowExclusiveLock);
2506 : :
3507 peter_e@gmx.net 2507 [ - + ]: 356 : InvokeObjectPostAlterHook(SubscriptionRelationId, subid, 0);
2508 : :
2509 : : /* Wake up related replication workers to handle this change quickly. */
1329 tgl@sss.pgh.pa.us 2510 : 356 : LogicalRepWorkersWakeupAtCommit(subid);
2511 : :
3507 peter_e@gmx.net 2512 : 356 : return myself;
2513 : : }
2514 : :
2515 : : /*
2516 : : * Construct conninfo from a subscription's server. Like libpqrcv_connect(),
2517 : : * if an error occurs, set *err to the error message and return NULL.
2518 : : *
2519 : : * However, failures in ForeignServerConnectionString() may ereport(ERROR),
2520 : : * and (also like libpqrcv_connect) it's not worth adding the machinery to
2521 : : * pass all of those back to the caller just to cover this one case.
2522 : : */
2523 : : static char *
70 jdavis@postgresql.or 2524 : 8 : construct_subserver_conninfo(Oid subserver, Oid subowner, char **err)
2525 : : {
2526 : : AclResult aclresult;
2527 : : ForeignServer *server;
2528 : :
2529 : 8 : *err = NULL;
2530 : :
2531 : 8 : server = GetForeignServer(subserver);
2532 : :
2533 : 8 : aclresult = object_aclcheck(ForeignServerRelationId, subserver,
2534 : : subowner, ACL_USAGE);
2535 [ + + ]: 8 : if (aclresult != ACLCHECK_OK)
2536 : : {
2537 : : /*
2538 : : * Unable to generate connection string because permissions on the
2539 : : * foreign server have been removed. Follow the same logic as an
2540 : : * unusable subconninfo (which will result in an ERROR later unless
2541 : : * slot_name = NONE).
2542 : : */
2543 : 4 : *err = psprintf(_("subscription owner \"%s\" does not have permission on foreign server \"%s\""),
2544 : : GetUserNameFromId(subowner, false),
2545 : : server->servername);
2546 : 4 : return NULL;
2547 : : }
2548 : :
2549 : 4 : return ForeignServerConnectionString(subowner, server);
2550 : : }
2551 : :
2552 : : /*
2553 : : * Drop subscription's conflict log table
2554 : : *
2555 : : * The conflict log table is registered as an internal dependency of the
2556 : : * subscription. This function removes the dependency by performing a
2557 : : * cascading deletion on the subscription object, which in turn drops the
2558 : : * associated conflict log table.
2559 : : *
2560 : : * This is used to clean up conflict log tables that are no longer required,
2561 : : * preventing accumulation of stale or orphaned relations.
2562 : : *
2563 : : * NOTE:
2564 : : * Only conflict log tables are currently managed via this internal dependency
2565 : : * mechanism.
2566 : : */
2567 : : static void
56 akapila@postgresql.o 2568 :GNC 174 : drop_sub_conflict_log_table(Oid subid, char *subname, Oid subconflictlogrelid)
2569 : : {
2570 : : /* Drop any dependent conflict log table */
2571 [ + + ]: 174 : if (OidIsValid(subconflictlogrelid))
2572 : : {
2573 : : ObjectAddress object;
2574 : : char *conflictrelname;
2575 : :
2576 : 13 : conflictrelname = get_rel_name(subconflictlogrelid);
2577 [ - + ]: 13 : if (conflictrelname == NULL)
56 akapila@postgresql.o 2578 [ # # ]:UNC 0 : elog(ERROR, "cache lookup failed for relation %u",
2579 : : subconflictlogrelid);
2580 : :
2581 : : /*
2582 : : * By using PERFORM_DELETION_SKIP_ORIGINAL, we ensure that only the
2583 : : * conflict log table is deleted while the subscription remains.
2584 : : */
56 akapila@postgresql.o 2585 :GNC 13 : ObjectAddressSet(object, SubscriptionRelationId, subid);
2586 : 13 : performDeletion(&object, DROP_CASCADE,
2587 : : PERFORM_DELETION_INTERNAL |
2588 : : PERFORM_DELETION_SKIP_ORIGINAL);
2589 : :
2590 [ + + ]: 13 : ereport(NOTICE,
2591 : : errmsg("dropped conflict log table \"%s\" for subscription \"%s\"",
2592 : : get_qualified_objname(PG_CONFLICT_NAMESPACE, conflictrelname),
2593 : : subname));
2594 : : }
2595 : 174 : }
2596 : :
2597 : : /*
2598 : : * Drop a subscription
2599 : : */
2600 : : void
3464 peter_e@gmx.net 2601 :CBC 182 : DropSubscription(DropSubscriptionStmt *stmt, bool isTopLevel)
2602 : : {
2603 : : Relation rel;
2604 : : ObjectAddress myself;
2605 : : HeapTuple tup;
2606 : : Oid subid;
2607 : : Oid subowner;
2608 : : Oid subserver;
2609 : : Oid subconflictlogrelid;
70 jdavis@postgresql.or 2610 : 182 : char *subconninfo = NULL;
2611 : : Datum datum;
2612 : : bool isnull;
2613 : : char *subname;
2614 : 182 : char *conninfo = NULL;
2615 : : char *slotname;
2616 : : List *subworkers;
2617 : : ListCell *lc;
2618 : : char originname[NAMEDATALEN];
3507 peter_e@gmx.net 2619 : 182 : char *err = NULL;
174 jdavis@postgresql.or 2620 : 182 : WalReceiverConn *wrconn = NULL;
2621 : : Form_pg_subscription form;
2622 : : List *rstates;
2623 : : bool must_use_password;
2624 : :
2625 : : /*
2626 : : * The launcher may concurrently start a new worker for this subscription.
2627 : : * During initialization, the worker checks for subscription validity and
2628 : : * exits if the subscription has already been dropped. See
2629 : : * InitializeLogRepWorker.
2630 : : */
373 akapila@postgresql.o 2631 : 182 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
2632 : :
384 peter@eisentraut.org 2633 : 182 : tup = SearchSysCache2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
3507 peter_e@gmx.net 2634 : 182 : CStringGetDatum(stmt->subname));
2635 : :
2636 [ + + ]: 182 : if (!HeapTupleIsValid(tup))
2637 : : {
2775 andres@anarazel.de 2638 : 8 : table_close(rel, NoLock);
2639 : :
3507 peter_e@gmx.net 2640 [ + + ]: 8 : if (!stmt->missing_ok)
2641 [ + - ]: 4 : ereport(ERROR,
2642 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
2643 : : errmsg("subscription \"%s\" does not exist",
2644 : : stmt->subname)));
2645 : : else
2646 [ + - ]: 4 : ereport(NOTICE,
2647 : : (errmsg("subscription \"%s\" does not exist, skipping",
2648 : : stmt->subname)));
2649 : :
2650 : 85 : return;
2651 : : }
2652 : :
70 jdavis@postgresql.or 2653 : 174 : datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
2654 : : Anum_pg_subscription_subconninfo, &isnull);
2655 [ + + ]: 174 : if (!isnull)
2656 : 157 : subconninfo = TextDatumGetCString(datum);
2657 : :
2837 andres@anarazel.de 2658 : 174 : form = (Form_pg_subscription) GETSTRUCT(tup);
2659 : 174 : subid = form->oid;
1246 rhaas@postgresql.org 2660 : 174 : subowner = form->subowner;
70 jdavis@postgresql.or 2661 : 174 : subserver = form->subserver;
56 akapila@postgresql.o 2662 :GNC 174 : subconflictlogrelid = form->subconflictlogrelid;
1246 rhaas@postgresql.org 2663 [ + + + + ]:CBC 174 : must_use_password = !superuser_arg(subowner) && form->subpasswordrequired;
2664 : :
2665 : : /* must be owner */
1383 peter@eisentraut.org 2666 [ - + ]: 174 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
3190 peter_e@gmx.net 2667 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
3507 2668 : 0 : stmt->subname);
2669 : :
2670 : : /* DROP hook for the subscription being removed */
3507 peter_e@gmx.net 2671 [ - + ]:CBC 174 : InvokeObjectDropHook(SubscriptionRelationId, subid, 0);
2672 : :
2673 : : /*
2674 : : * Lock the subscription so nobody else can do anything with it (including
2675 : : * the replication workers).
2676 : : */
2677 : 174 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
2678 : :
2679 : : /* Get subname */
1251 dgustafsson@postgres 2680 : 174 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID, tup,
2681 : : Anum_pg_subscription_subname);
3507 peter_e@gmx.net 2682 : 174 : subname = pstrdup(NameStr(*DatumGetName(datum)));
2683 : :
2684 : : /* Get slotname */
2685 : 174 : datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
2686 : : Anum_pg_subscription_subslotname, &isnull);
3397 2687 [ + + ]: 174 : if (!isnull)
2688 : 92 : slotname = pstrdup(NameStr(*DatumGetName(datum)));
2689 : : else
2690 : 82 : slotname = NULL;
2691 : :
2692 : : /*
2693 : : * Since dropping a replication slot is not transactional, the replication
2694 : : * slot stays dropped even if the transaction rolls back. So we cannot
2695 : : * run DROP SUBSCRIPTION inside a transaction block if dropping the
2696 : : * replication slot. Also, in this case, we report a message for dropping
2697 : : * the subscription to the cumulative stats system.
2698 : : *
2699 : : * XXX The command name should really be something like "DROP SUBSCRIPTION
2700 : : * of a subscription that is associated with a replication slot", but we
2701 : : * don't have the proper facilities for that.
2702 : : */
2703 [ + + ]: 174 : if (slotname)
3114 2704 : 92 : PreventInTransactionBlock(isTopLevel, "DROP SUBSCRIPTION");
2705 : :
3507 2706 : 170 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
2707 : 170 : EventTriggerSQLDropAddObject(&myself, true, true);
2708 : :
2709 : : /* Remove the tuple from catalog. */
3494 tgl@sss.pgh.pa.us 2710 : 170 : CatalogTupleDelete(rel, &tup->t_self);
2711 : :
3507 peter_e@gmx.net 2712 : 170 : ReleaseSysCache(tup);
2713 : :
2714 : : /*
2715 : : * Stop all the subscription workers immediately.
2716 : : *
2717 : : * This is necessary if we are dropping the replication slot, so that the
2718 : : * slot becomes accessible.
2719 : : *
2720 : : * It is also necessary if the subscription is disabled and was disabled
2721 : : * in the same transaction. Then the workers haven't seen the disabling
2722 : : * yet and will still be running, leading to hangs later when we want to
2723 : : * drop the replication origin. If the subscription was disabled before
2724 : : * this transaction, then there shouldn't be any workers left, so this
2725 : : * won't make a difference.
2726 : : *
2727 : : * New workers won't be started because we hold an exclusive lock on the
2728 : : * subscription till the end of the transaction.
2729 : : */
764 akapila@postgresql.o 2730 : 170 : subworkers = logicalrep_workers_find(subid, false, true);
3300 tgl@sss.pgh.pa.us 2731 [ + + + + : 255 : foreach(lc, subworkers)
+ + ]
2732 : : {
3310 peter_e@gmx.net 2733 : 85 : LogicalRepWorker *w = (LogicalRepWorker *) lfirst(lc);
2734 : :
303 akapila@postgresql.o 2735 : 85 : logicalrep_worker_stop(w->type, w->subid, w->relid);
2736 : : }
3310 peter_e@gmx.net 2737 : 170 : list_free(subworkers);
2738 : :
2739 : : /*
2740 : : * Remove the no-longer-useful entry in the launcher's table of apply
2741 : : * worker start times.
2742 : : *
2743 : : * If this transaction rolls back, the launcher might restart a failed
2744 : : * apply worker before wal_retrieve_retry_interval milliseconds have
2745 : : * elapsed, but that's pretty harmless.
2746 : : */
1313 tgl@sss.pgh.pa.us 2747 : 170 : ApplyLauncherForgetWorkerStartTime(subid);
2748 : :
2749 : : /*
2750 : : * Cleanup of tablesync replication origins.
2751 : : *
2752 : : * Any READY-state relations would already have dealt with clean-ups.
2753 : : *
2754 : : * Note that the state can't change because we have already stopped both
2755 : : * the apply and tablesync workers and they can't restart because of
2756 : : * exclusive lock on the subscription.
2757 : : */
308 akapila@postgresql.o 2758 : 170 : rstates = GetSubscriptionRelations(subid, true, false, true);
2022 2759 [ + + + + : 176 : foreach(lc, rstates)
+ + ]
2760 : : {
2761 : 6 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
2762 : 6 : Oid relid = rstate->relid;
2763 : :
2764 : : /* Only cleanup resources of tablesync workers */
2765 [ - + ]: 6 : if (!OidIsValid(relid))
2022 akapila@postgresql.o 2766 :UBC 0 : continue;
2767 : :
2768 : : /*
2769 : : * Drop the tablesync's origin tracking if exists.
2770 : : *
2771 : : * It is possible that the origin is not yet created for tablesync
2772 : : * worker so passing missing_ok = true. This can happen for the states
2773 : : * before SUBREL_STATE_DATASYNC.
2774 : : */
1416 akapila@postgresql.o 2775 :CBC 6 : ReplicationOriginNameForLogicalRep(subid, relid, originname,
2776 : : sizeof(originname));
1445 2777 : 6 : replorigin_drop_by_name(originname, true, false);
2778 : : }
2779 : :
2780 : : /* Drop subscription's conflict log table */
56 akapila@postgresql.o 2781 :GNC 170 : drop_sub_conflict_log_table(subid, subname, subconflictlogrelid);
2782 : :
2783 : : /* Clean up dependencies */
174 jdavis@postgresql.or 2784 :CBC 170 : deleteDependencyRecordsFor(SubscriptionRelationId, subid, false);
3506 alvherre@alvh.no-ip. 2785 : 170 : deleteSharedDependencyRecordsFor(SubscriptionRelationId, subid, 0);
2786 : :
2787 : : /* Remove any associated relation synchronization states. */
3444 peter_e@gmx.net 2788 : 170 : RemoveSubscriptionRel(subid, InvalidOid);
2789 : :
2790 : : /* Remove the origin tracking if exists. */
1416 akapila@postgresql.o 2791 : 170 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
2024 2792 : 170 : replorigin_drop_by_name(originname, true, false);
2793 : :
2794 : : /*
2795 : : * Tell the cumulative stats system that the subscription is getting
2796 : : * dropped.
2797 : : */
1149 msawada@postgresql.o 2798 : 170 : pgstat_drop_subscription(subid);
2799 : :
2800 : : /*
2801 : : * If there is no slot associated with the subscription, we can finish
2802 : : * here.
2803 : : */
2022 akapila@postgresql.o 2804 [ + + + + ]: 170 : if (!slotname && rstates == NIL)
2805 : : {
2775 andres@anarazel.de 2806 : 81 : table_close(rel, NoLock);
3507 peter_e@gmx.net 2807 : 81 : return;
2808 : : }
2809 : :
2810 : : /*
2811 : : * Try to acquire the connection necessary for dropping slots.
2812 : : *
2813 : : * Note: If the slotname is NONE/NULL then we allow the command to finish
2814 : : * and users need to manually cleanup the apply and tablesync worker slots
2815 : : * later.
2816 : : *
2817 : : * This has to be at the end because otherwise if there is an error while
2818 : : * doing the database operations we won't be able to rollback dropped
2819 : : * slot.
2820 : : */
2821 : 89 : load_file("libpqwalreceiver", false);
2822 : :
70 jdavis@postgresql.or 2823 [ + + ]: 89 : if (OidIsValid(subserver))
2824 : 8 : conninfo = construct_subserver_conninfo(subserver, subowner, &err);
2825 : : else
2826 : 81 : conninfo = subconninfo;
2827 : :
174 2828 [ + + ]: 85 : if (conninfo)
2829 : 81 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
2830 : : subname, &err);
2831 : :
3507 peter_e@gmx.net 2832 [ + + ]: 85 : if (wrconn == NULL)
2833 : : {
2022 akapila@postgresql.o 2834 [ - + ]: 4 : if (!slotname)
2835 : : {
2836 : : /* be tidy */
2022 akapila@postgresql.o 2837 :UBC 0 : list_free(rstates);
2838 : 0 : table_close(rel, NoLock);
2839 : 0 : return;
2840 : : }
2841 : : else
2842 : : {
2022 akapila@postgresql.o 2843 :CBC 4 : ReportSlotConnectionError(rstates, subid, slotname, err);
2844 : : }
2845 : : }
2846 : :
2847 [ + + ]: 81 : PG_TRY();
2848 : : {
2849 [ + + + + : 87 : foreach(lc, rstates)
+ + ]
2850 : : {
2851 : 6 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
2852 : 6 : Oid relid = rstate->relid;
2853 : :
2854 : : /* Only cleanup resources of tablesync workers */
2855 [ - + ]: 6 : if (!OidIsValid(relid))
2022 akapila@postgresql.o 2856 :UBC 0 : continue;
2857 : :
2858 : : /*
2859 : : * Drop the tablesync slots associated with removed tables.
2860 : : *
2861 : : * For SYNCDONE/READY states, the tablesync slot is known to have
2862 : : * already been dropped by the tablesync worker.
2863 : : *
2864 : : * For other states, there is no certainty, maybe the slot does
2865 : : * not exist yet. Also, if we fail after removing some of the
2866 : : * slots, next time, it will again try to drop already dropped
2867 : : * slots and fail. For these reasons, we allow missing_ok = true
2868 : : * for the drop.
2869 : : */
2022 akapila@postgresql.o 2870 [ + + ]:CBC 6 : if (rstate->state != SUBREL_STATE_SYNCDONE)
2871 : : {
2872 : 5 : char syncslotname[NAMEDATALEN] = {0};
2873 : :
2019 2874 : 5 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
2875 : : sizeof(syncslotname));
2022 2876 : 5 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
2877 : : }
2878 : : }
2879 : :
2880 : 81 : list_free(rstates);
2881 : :
2882 : : /*
2883 : : * If there is a slot associated with the subscription, then drop the
2884 : : * replication slot at the publisher.
2885 : : */
2886 [ + + ]: 81 : if (slotname)
2887 : 80 : ReplicationSlotDropAtPubNode(wrconn, slotname, false);
2888 : : }
2889 : 1 : PG_FINALLY();
2890 : : {
2891 : 81 : walrcv_disconnect(wrconn);
2892 : : }
2893 [ + + ]: 81 : PG_END_TRY();
2894 : :
2895 : 80 : table_close(rel, NoLock);
2896 : : }
2897 : :
2898 : : /*
2899 : : * Drop the replication slot at the publisher node using the replication
2900 : : * connection.
2901 : : *
2902 : : * missing_ok - if true then only issue a LOG message if the slot doesn't
2903 : : * exist.
2904 : : */
2905 : : void
2906 : 293 : ReplicationSlotDropAtPubNode(WalReceiverConn *wrconn, char *slotname, bool missing_ok)
2907 : : {
2908 : : StringInfoData cmd;
2909 : :
2910 [ - + ]: 293 : Assert(wrconn);
2911 : :
2912 : 293 : load_file("libpqwalreceiver", false);
2913 : :
2914 : 293 : initStringInfo(&cmd);
73 tgl@sss.pgh.pa.us 2915 : 293 : appendStringInfoString(&cmd, "DROP_REPLICATION_SLOT ");
2916 : 293 : appendQuotedIdentifier(&cmd, slotname);
2917 : 293 : appendStringInfoString(&cmd, " WAIT");
2918 : :
3459 fujii@postgresql.org 2919 [ + + ]: 293 : PG_TRY();
2920 : : {
2921 : : WalRcvExecResult *res;
2922 : :
3444 peter_e@gmx.net 2923 : 293 : res = walrcv_exec(wrconn, cmd.data, 0, NULL);
2924 : :
2022 akapila@postgresql.o 2925 [ + + ]: 293 : if (res->status == WALRCV_OK_COMMAND)
2926 : : {
2927 : : /* NOTICE. Success. */
2928 [ + + ]: 289 : ereport(NOTICE,
2929 : : (errmsg("dropped replication slot \"%s\" on publisher",
2930 : : slotname)));
2931 : : }
2932 [ + - + + ]: 4 : else if (res->status == WALRCV_ERROR &&
2933 : 3 : missing_ok &&
2934 [ + - ]: 3 : res->sqlstate == ERRCODE_UNDEFINED_OBJECT)
2935 : : {
2936 : : /* LOG. Error, but missing_ok = true. */
2937 [ + - ]: 3 : ereport(LOG,
2938 : : (errmsg("could not drop replication slot \"%s\" on publisher: %s",
2939 : : slotname, res->err)));
2940 : : }
2941 : : else
2942 : : {
2943 : : /* ERROR. */
2944 [ + - ]: 1 : ereport(ERROR,
2945 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2946 : : errmsg("could not drop replication slot \"%s\" on publisher: %s",
2947 : : slotname, res->err)));
2948 : : }
2949 : :
3444 peter_e@gmx.net 2950 : 292 : walrcv_clear_result(res);
2951 : : }
2491 peter@eisentraut.org 2952 : 1 : PG_FINALLY();
2953 : : {
2022 akapila@postgresql.o 2954 : 293 : pfree(cmd.data);
2955 : : }
3459 fujii@postgresql.org 2956 [ + + ]: 293 : PG_END_TRY();
3507 peter_e@gmx.net 2957 : 292 : }
2958 : :
2959 : : /*
2960 : : * Internal workhorse for changing a subscription owner
2961 : : */
2962 : : static void
2963 : 28 : AlterSubscriptionOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
2964 : : {
2965 : : Form_pg_subscription form;
2966 : : AclResult aclresult;
2967 : :
2968 : 28 : form = (Form_pg_subscription) GETSTRUCT(tup);
2969 : :
2970 : : /* Must only alter subscriptions belonging to the current database. */
40 jdavis@postgresql.or 2971 [ - + ]: 28 : Assert(form->subdbid == MyDatabaseId);
2972 : :
3507 peter_e@gmx.net 2973 [ + + ]: 28 : if (form->subowner == newOwnerId)
2974 : 2 : return;
2975 : :
1383 peter@eisentraut.org 2976 [ - + ]: 26 : if (!object_ownercheck(SubscriptionRelationId, form->oid, GetUserId()))
3190 peter_e@gmx.net 2977 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
3507 2978 : 0 : NameStr(form->subname));
2979 : :
2980 : : /*
2981 : : * Don't allow non-superuser modification of a subscription with
2982 : : * password_required=false.
2983 : : */
1246 rhaas@postgresql.org 2984 [ - + - - ]:CBC 26 : if (!form->subpasswordrequired && !superuser())
3507 peter_e@gmx.net 2985 [ # # ]:UBC 0 : ereport(ERROR,
2986 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2987 : : errmsg("password_required=false is superuser-only"),
2988 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
2989 : :
2990 : : /* Must be able to become new owner */
1246 rhaas@postgresql.org 2991 :CBC 26 : check_can_set_role(GetUserId(), newOwnerId);
2992 : :
2993 : : /*
2994 : : * current owner must have CREATE on database
2995 : : *
2996 : : * This is consistent with how ALTER SCHEMA ... OWNER TO works, but some
2997 : : * other object types behave differently (e.g. you can't give a table to a
2998 : : * user who lacks CREATE privileges on a schema).
2999 : : */
3000 : 22 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
3001 : : GetUserId(), ACL_CREATE);
3002 [ - + ]: 22 : if (aclresult != ACLCHECK_OK)
1246 rhaas@postgresql.org 3003 :UBC 0 : aclcheck_error(aclresult, OBJECT_DATABASE,
3004 : 0 : get_database_name(MyDatabaseId));
3005 : :
3006 : : /*
3007 : : * The privileges will be checked before the connection is actually used,
3008 : : * so it does not need to be done here. Avoid unnecessary risk of errors
3009 : : * here, which could interfere with restore.
3010 : : *
3011 : : * However, it is convenient to check if a user mapping exists, and raise
3012 : : * a WARNING if not.
3013 : : */
174 jdavis@postgresql.or 3014 [ + + ]:CBC 22 : if (OidIsValid(form->subserver))
22 3015 : 9 : GetUserMappingExtended(newOwnerId, form->subserver, WARNING);
3016 : :
3507 peter_e@gmx.net 3017 : 22 : form->subowner = newOwnerId;
3495 alvherre@alvh.no-ip. 3018 : 22 : CatalogTupleUpdate(rel, &tup->t_self, tup);
3019 : :
3020 : : /* Update owner of the conflict log table if it exists. */
56 akapila@postgresql.o 3021 [ + + ]:GNC 22 : if (OidIsValid(form->subconflictlogrelid))
3022 : 8 : ATExecChangeOwner(form->subconflictlogrelid, newOwnerId, true,
3023 : : AccessExclusiveLock);
3024 : :
3025 : : /* Update owner dependency reference */
3507 peter_e@gmx.net 3026 :CBC 22 : changeDependencyOnOwner(SubscriptionRelationId,
3027 : : form->oid,
3028 : : newOwnerId);
3029 : :
3030 [ - + ]: 22 : InvokeObjectPostAlterHook(SubscriptionRelationId,
3031 : : form->oid, 0);
3032 : :
3033 : : /* Wake up related background processes to handle this change quickly. */
1693 jdavis@postgresql.or 3034 : 22 : ApplyLauncherWakeupAtCommit();
1329 tgl@sss.pgh.pa.us 3035 : 22 : LogicalRepWorkersWakeupAtCommit(form->oid);
3036 : : }
3037 : :
3038 : : /*
3039 : : * Change subscription owner -- by name
3040 : : */
3041 : : ObjectAddress
3507 peter_e@gmx.net 3042 : 27 : AlterSubscriptionOwner(const char *name, Oid newOwnerId)
3043 : : {
3044 : : Oid subid;
3045 : : HeapTuple tup;
3046 : : Relation rel;
3047 : : ObjectAddress address;
3048 : : Form_pg_subscription form;
3049 : :
2775 andres@anarazel.de 3050 : 27 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
3051 : :
384 peter@eisentraut.org 3052 : 27 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
3053 : : CStringGetDatum(name));
3054 : :
3507 peter_e@gmx.net 3055 [ - + ]: 27 : if (!HeapTupleIsValid(tup))
3507 peter_e@gmx.net 3056 [ # # ]:UBC 0 : ereport(ERROR,
3057 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
3058 : : errmsg("subscription \"%s\" does not exist", name)));
3059 : :
2837 andres@anarazel.de 3060 :CBC 27 : form = (Form_pg_subscription) GETSTRUCT(tup);
3061 : 27 : subid = form->oid;
3062 : :
3507 peter_e@gmx.net 3063 : 27 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
3064 : :
3065 : 23 : ObjectAddressSet(address, SubscriptionRelationId, subid);
3066 : :
3067 : 23 : heap_freetuple(tup);
3068 : :
2775 andres@anarazel.de 3069 : 23 : table_close(rel, RowExclusiveLock);
3070 : :
3507 peter_e@gmx.net 3071 : 23 : return address;
3072 : : }
3073 : :
3074 : : /*
3075 : : * Change subscription owner -- by OID
3076 : : */
3077 : : void
3078 : 2 : AlterSubscriptionOwner_oid(Oid subid, Oid newOwnerId)
3079 : : {
3080 : : HeapTuple tup;
3081 : : Relation rel;
3082 : : Form_pg_subscription form;
3083 : :
2775 andres@anarazel.de 3084 : 2 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
3085 : :
3507 peter_e@gmx.net 3086 : 2 : tup = SearchSysCacheCopy1(SUBSCRIPTIONOID, ObjectIdGetDatum(subid));
3087 : :
3088 [ - + ]: 2 : if (!HeapTupleIsValid(tup))
3507 peter_e@gmx.net 3089 [ # # ]:UBC 0 : ereport(ERROR,
3090 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
3091 : : errmsg("subscription with OID %u does not exist", subid)));
3092 : :
40 jdavis@postgresql.or 3093 :CBC 2 : form = (Form_pg_subscription) GETSTRUCT(tup);
3094 : :
3095 : : /*
3096 : : * Don't process subscriptions belonging to other databases. While
3097 : : * pg_subscription is a shared catalog, subscriptions refer to db-local
3098 : : * objects which exist only in the database identified by subdbid.
3099 : : */
3100 [ + + ]: 2 : if (form->subdbid == MyDatabaseId)
3101 : 1 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
3102 : :
3507 peter_e@gmx.net 3103 : 2 : heap_freetuple(tup);
3104 : :
2775 andres@anarazel.de 3105 : 2 : table_close(rel, RowExclusiveLock);
3507 peter_e@gmx.net 3106 : 2 : }
3107 : :
3108 : : /*
3109 : : * Check and log a warning if the publisher has subscribed to the same table,
3110 : : * its partition ancestors (if it's a partition), or its partition children (if
3111 : : * it's a partitioned table), from some other publishers. This check is
3112 : : * required in the following scenarios:
3113 : : *
3114 : : * 1) For CREATE SUBSCRIPTION and ALTER SUBSCRIPTION ... REFRESH PUBLICATION
3115 : : * statements with "copy_data = true" and "origin = none":
3116 : : * - Warn the user that data with an origin might have been copied.
3117 : : * - This check is skipped for tables already added, as incremental sync via
3118 : : * WAL allows origin tracking. The list of such tables is in
3119 : : * subrel_local_oids.
3120 : : *
3121 : : * 2) For CREATE SUBSCRIPTION and ALTER SUBSCRIPTION ... REFRESH PUBLICATION
3122 : : * statements with "retain_dead_tuples = true" and "origin = any", and for
3123 : : * ALTER SUBSCRIPTION statements that modify retain_dead_tuples or origin,
3124 : : * or when the publisher's status changes (e.g., due to a connection string
3125 : : * update):
3126 : : * - Warn the user that only conflict detection info for local changes on
3127 : : * the publisher is retained. Data from other origins may lack sufficient
3128 : : * details for reliable conflict detection.
3129 : : * - See comments atop worker.c for more details.
3130 : : */
3131 : : static void
308 akapila@postgresql.o 3132 : 174 : check_publications_origin_tables(WalReceiverConn *wrconn, List *publications,
3133 : : bool copydata, bool retain_dead_tuples,
3134 : : char *origin, Oid *subrel_local_oids,
3135 : : int subrel_count, char *subname)
3136 : : {
3137 : : WalRcvExecResult *res;
3138 : : StringInfoData cmd;
3139 : : TupleTableSlot *slot;
1449 3140 : 174 : Oid tableRow[1] = {TEXTOID};
3141 : 174 : List *publist = NIL;
3142 : : int i;
3143 : : bool check_rdt;
3144 : : bool check_table_sync;
400 3145 [ + - + + ]: 348 : bool origin_none = origin &&
3146 : 174 : pg_strcasecmp(origin, LOGICALREP_ORIGIN_NONE) == 0;
3147 : :
3148 : : /*
3149 : : * Enable retain_dead_tuples checks only when origin is set to 'any',
3150 : : * since with origin='none' only local changes are replicated to the
3151 : : * subscriber.
3152 : : */
3153 [ + + + + ]: 174 : check_rdt = retain_dead_tuples && !origin_none;
3154 : :
3155 : : /*
3156 : : * Enable table synchronization checks only when origin is 'none', to
3157 : : * ensure that data from other origins is not inadvertently copied.
3158 : : */
3159 [ + + + + ]: 174 : check_table_sync = copydata && origin_none;
3160 : :
3161 : : /* retain_dead_tuples and table sync checks occur separately */
3162 [ + + - + ]: 174 : Assert(!(check_rdt && check_table_sync));
3163 : :
3164 : : /* Return if no checks are required */
3165 [ + + + + ]: 174 : if (!check_rdt && !check_table_sync)
1449 3166 : 160 : return;
3167 : :
3168 : 14 : initStringInfo(&cmd);
3169 : 14 : appendStringInfoString(&cmd,
3170 : : "SELECT DISTINCT P.pubname AS pubname\n"
3171 : : "FROM pg_publication P,\n"
3172 : : " LATERAL pg_get_publication_tables(P.pubname) GPT\n"
3173 : : " JOIN pg_subscription_rel PS ON (GPT.relid = PS.srrelid OR"
3174 : : " GPT.relid IN (SELECT relid FROM pg_partition_ancestors(PS.srrelid) UNION"
3175 : : " SELECT relid FROM pg_partition_tree(PS.srrelid))),\n"
3176 : : " pg_class C JOIN pg_namespace N ON (N.oid = C.relnamespace)\n"
3177 : : "WHERE C.oid = GPT.relid AND P.pubname IN (");
671 michael@paquier.xyz 3178 : 14 : GetPublicationsStr(publications, &cmd, true);
1449 akapila@postgresql.o 3179 : 14 : appendStringInfoString(&cmd, ")\n");
3180 : :
3181 : : /*
3182 : : * In case of ALTER SUBSCRIPTION ... REFRESH PUBLICATION,
3183 : : * subrel_local_oids contains the list of relation oids that are already
3184 : : * present on the subscriber. This check should be skipped for these
3185 : : * tables if checking for table sync scenario. However, when handling the
3186 : : * retain_dead_tuples scenario, ensure all tables are checked, as some
3187 : : * existing tables may now include changes from other origins due to newly
3188 : : * created subscriptions on the publisher.
3189 : : */
400 3190 [ + + ]: 14 : if (check_table_sync)
3191 : : {
3192 [ + + ]: 16 : for (i = 0; i < subrel_count; i++)
3193 : : {
3194 : 5 : Oid relid = subrel_local_oids[i];
3195 : : char *schemaname;
3196 : : char *tablename;
3197 : : char *schemaname_lit;
3198 : : char *tablename_lit;
3199 : :
3200 : : /* The table may have been dropped concurrently; skip if gone. */
1 msawada@postgresql.o 3201 : 5 : tablename = get_rel_name(relid);
3202 [ - + ]: 5 : if (tablename == NULL)
1 msawada@postgresql.o 3203 :UBC 0 : continue;
3204 : :
1 msawada@postgresql.o 3205 :CBC 5 : schemaname = get_namespace_name(get_rel_namespace(relid));
3206 [ - + ]: 5 : if (schemaname == NULL)
1 msawada@postgresql.o 3207 :UBC 0 : continue;
3208 : :
1 msawada@postgresql.o 3209 :CBC 5 : schemaname_lit = quote_literal_cstr(schemaname);
3210 : 5 : tablename_lit = quote_literal_cstr(tablename);
3211 : :
108 noah@leadboat.com 3212 : 5 : appendStringInfo(&cmd, "AND NOT (N.nspname = %s AND C.relname = %s)\n",
3213 : : schemaname_lit, tablename_lit);
3214 : :
3215 : 5 : pfree(schemaname_lit);
3216 : 5 : pfree(tablename_lit);
3217 : : }
3218 : : }
3219 : :
1449 akapila@postgresql.o 3220 : 14 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
3221 : 14 : pfree(cmd.data);
3222 : :
3223 [ - + ]: 14 : if (res->status != WALRCV_OK_TUPLES)
1449 akapila@postgresql.o 3224 [ # # ]:UBC 0 : ereport(ERROR,
3225 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3226 : : errmsg("could not receive list of replicated tables from the publisher: %s",
3227 : : res->err)));
3228 : :
3229 : : /* Process publications. */
1449 akapila@postgresql.o 3230 :CBC 14 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3231 [ + + ]: 19 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
3232 : : {
3233 : : char *pubname;
3234 : : bool isnull;
3235 : :
3236 : 5 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
3237 [ - + ]: 5 : Assert(!isnull);
3238 : :
3239 : 5 : ExecClearTuple(slot);
3240 : 5 : publist = list_append_unique(publist, makeString(pubname));
3241 : : }
3242 : :
3243 : : /*
3244 : : * Log a warning if the publisher has subscribed to the same table from
3245 : : * some other publisher. We cannot know the origin of data during the
3246 : : * initial sync. Data origins can be found only from the WAL by looking at
3247 : : * the origin id.
3248 : : *
3249 : : * XXX: For simplicity, we don't check whether the table has any data or
3250 : : * not. If the table doesn't have any data then we don't need to
3251 : : * distinguish between data having origin and data not having origin so we
3252 : : * can avoid logging a warning for table sync scenario.
3253 : : */
3254 [ + + ]: 14 : if (publist)
3255 : : {
3256 : : StringInfoData pubnames;
3257 : :
3258 : : /* Prepare the list of publication(s) for warning message. */
293 drowley@postgresql.o 3259 : 5 : initStringInfo(&pubnames);
3260 : 5 : GetPublicationsStr(publist, &pubnames, false);
3261 : :
400 akapila@postgresql.o 3262 [ + + ]: 5 : if (check_table_sync)
293 drowley@postgresql.o 3263 [ + - ]: 4 : ereport(WARNING,
3264 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3265 : : errmsg("subscription \"%s\" requested copy_data with origin = NONE but might copy data that had a different origin",
3266 : : subname),
3267 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains tables that are written to by other subscriptions.",
3268 : : "The subscription subscribes to publications (%s) that contain tables that are written to by other subscriptions.",
3269 : : list_length(publist), pubnames.data),
3270 : : errhint("Verify that initial data copied from the publisher tables did not come from other origins."));
3271 : : else
3272 [ + - ]: 1 : ereport(WARNING,
3273 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3274 : : errmsg("subscription \"%s\" enabled retain_dead_tuples but might not reliably detect conflicts for changes from different origins",
3275 : : subname),
3276 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains tables that are written to by other subscriptions.",
3277 : : "The subscription subscribes to publications (%s) that contain tables that are written to by other subscriptions.",
3278 : : list_length(publist), pubnames.data),
3279 : : errhint("Consider using origin = NONE or disabling retain_dead_tuples."));
3280 : : }
3281 : :
1449 akapila@postgresql.o 3282 : 14 : ExecDropSingleTupleTableSlot(slot);
3283 : :
3284 : 14 : walrcv_clear_result(res);
3285 : : }
3286 : :
3287 : : /*
3288 : : * This function is similar to check_publications_origin_tables and serves
3289 : : * same purpose for sequences.
3290 : : */
3291 : : static void
308 3292 : 172 : check_publications_origin_sequences(WalReceiverConn *wrconn, List *publications,
3293 : : bool copydata, char *origin,
3294 : : Oid *subrel_local_oids, int subrel_count,
3295 : : char *subname)
3296 : : {
3297 : : WalRcvExecResult *res;
3298 : : StringInfoData cmd;
3299 : : TupleTableSlot *slot;
3300 : 172 : Oid tableRow[1] = {TEXTOID};
3301 : 172 : List *publist = NIL;
3302 : :
3303 : : /*
3304 : : * Enable sequence synchronization checks only when origin is 'none' , to
3305 : : * ensure that sequence data from other origins is not inadvertently
3306 : : * copied. This check is necessary if the publisher is running PG19 or
3307 : : * later, where logical replication sequence synchronization is supported.
3308 : : */
246 fujii@postgresql.org 3309 [ + + + + : 183 : if (!copydata || pg_strcasecmp(origin, LOGICALREP_ORIGIN_NONE) != 0 ||
- + ]
3310 : 11 : walrcv_server_version(wrconn) < 190000)
308 akapila@postgresql.o 3311 : 161 : return;
3312 : :
3313 : 11 : initStringInfo(&cmd);
3314 : 11 : appendStringInfoString(&cmd,
3315 : : "SELECT DISTINCT P.pubname AS pubname\n"
3316 : : "FROM pg_publication P,\n"
3317 : : " LATERAL pg_get_publication_sequences(P.pubname) GPS\n"
3318 : : " JOIN pg_subscription_rel PS ON (GPS.relid = PS.srrelid),\n"
3319 : : " pg_class C JOIN pg_namespace N ON (N.oid = C.relnamespace)\n"
3320 : : "WHERE C.oid = GPS.relid AND P.pubname IN (");
3321 : :
3322 : 11 : GetPublicationsStr(publications, &cmd, true);
3323 : 11 : appendStringInfoString(&cmd, ")\n");
3324 : :
3325 : : /*
3326 : : * In case of ALTER SUBSCRIPTION ... REFRESH PUBLICATION,
3327 : : * subrel_local_oids contains the list of relations that are already
3328 : : * present on the subscriber. This check should be skipped as these will
3329 : : * not be re-synced.
3330 : : */
3331 [ + + ]: 12 : for (int i = 0; i < subrel_count; i++)
3332 : : {
3333 : 1 : Oid relid = subrel_local_oids[i];
3334 : : char *schemaname;
3335 : : char *seqname;
3336 : : char *schemaname_lit;
3337 : : char *seqname_lit;
3338 : :
3339 : : /* The sequence may have been dropped concurrently; skip if gone. */
1 msawada@postgresql.o 3340 : 1 : seqname = get_rel_name(relid);
3341 [ + - ]: 1 : if (seqname == NULL)
3342 : 1 : continue;
3343 : :
1 msawada@postgresql.o 3344 :UBC 0 : schemaname = get_namespace_name(get_rel_namespace(relid));
3345 [ # # ]: 0 : if (schemaname == NULL)
3346 : 0 : continue;
3347 : :
3348 : 0 : schemaname_lit = quote_literal_cstr(schemaname);
3349 : 0 : seqname_lit = quote_literal_cstr(seqname);
3350 : :
308 akapila@postgresql.o 3351 : 0 : appendStringInfo(&cmd,
3352 : : "AND NOT (N.nspname = %s AND C.relname = %s)\n",
3353 : : schemaname_lit, seqname_lit);
3354 : :
108 noah@leadboat.com 3355 : 0 : pfree(schemaname_lit);
3356 : 0 : pfree(seqname_lit);
3357 : : }
3358 : :
308 akapila@postgresql.o 3359 :CBC 11 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
3360 : 11 : pfree(cmd.data);
3361 : :
3362 [ - + ]: 11 : if (res->status != WALRCV_OK_TUPLES)
308 akapila@postgresql.o 3363 [ # # ]:UBC 0 : ereport(ERROR,
3364 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3365 : : errmsg("could not receive list of replicated sequences from the publisher: %s",
3366 : : res->err)));
3367 : :
3368 : : /* Process publications. */
308 akapila@postgresql.o 3369 :CBC 11 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3370 [ - + ]: 11 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
3371 : : {
3372 : : char *pubname;
3373 : : bool isnull;
3374 : :
308 akapila@postgresql.o 3375 :UBC 0 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
3376 [ # # ]: 0 : Assert(!isnull);
3377 : :
3378 : 0 : ExecClearTuple(slot);
3379 : 0 : publist = list_append_unique(publist, makeString(pubname));
3380 : : }
3381 : :
3382 : : /*
3383 : : * Log a warning if the publisher has subscribed to the same sequence from
3384 : : * some other publisher. We cannot know the origin of sequences data
3385 : : * during the initial sync.
3386 : : */
308 akapila@postgresql.o 3387 [ - + ]:CBC 11 : if (publist)
3388 : : {
3389 : : StringInfoData pubnames;
3390 : :
3391 : : /* Prepare the list of publication(s) for warning message. */
293 drowley@postgresql.o 3392 :UBC 0 : initStringInfo(&pubnames);
3393 : 0 : GetPublicationsStr(publist, &pubnames, false);
3394 : :
308 akapila@postgresql.o 3395 [ # # ]: 0 : ereport(WARNING,
3396 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3397 : : errmsg("subscription \"%s\" requested origin = NONE but might synchronize sequence values that had a different origin",
3398 : : subname),
3399 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains sequences that are synchronized from other subscriptions.",
3400 : : "The subscription subscribes to publications (%s) that contain sequences that are synchronized from other subscriptions.",
3401 : : list_length(publist), pubnames.data),
3402 : : errhint("Verify that the initial values copied from the publisher sequences did not come from other origins."));
3403 : : }
3404 : :
308 akapila@postgresql.o 3405 :CBC 11 : ExecDropSingleTupleTableSlot(slot);
3406 : :
3407 : 11 : walrcv_clear_result(res);
3408 : : }
3409 : :
3410 : : /*
3411 : : * Determine whether the retain_dead_tuples can be enabled based on the
3412 : : * publisher's status.
3413 : : *
3414 : : * This option is disallowed if the publisher is running a version earlier
3415 : : * than the PG19, or if the publisher is in recovery (i.e., it is a standby
3416 : : * server).
3417 : : *
3418 : : * This is used both at DDL time (as a convenience, when a connection to the
3419 : : * publisher is already being made) and by the apply worker when it connects,
3420 : : * which is the authoritative check because the publisher's version and
3421 : : * recovery status can change after the DDL command.
3422 : : *
3423 : : * See comments atop worker.c for a detailed explanation.
3424 : : */
3425 : : void
23 3426 : 19 : CheckPubDeadTupleRetention(WalReceiverConn *wrconn)
3427 : : {
3428 : : WalRcvExecResult *res;
400 3429 : 19 : Oid RecoveryRow[1] = {BOOLOID};
3430 : : TupleTableSlot *slot;
3431 : : bool isnull;
3432 : : bool remote_in_recovery;
3433 : :
246 fujii@postgresql.org 3434 [ - + ]: 19 : if (walrcv_server_version(wrconn) < 190000)
400 akapila@postgresql.o 3435 [ # # ]:UBC 0 : ereport(ERROR,
3436 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3437 : : errmsg("cannot enable retain_dead_tuples if the publisher is running a version earlier than PostgreSQL 19"));
3438 : :
400 akapila@postgresql.o 3439 :CBC 19 : res = walrcv_exec(wrconn, "SELECT pg_is_in_recovery()", 1, RecoveryRow);
3440 : :
3441 [ - + ]: 19 : if (res->status != WALRCV_OK_TUPLES)
400 akapila@postgresql.o 3442 [ # # ]:UBC 0 : ereport(ERROR,
3443 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3444 : : errmsg("could not obtain recovery progress from the publisher: %s",
3445 : : res->err)));
3446 : :
400 akapila@postgresql.o 3447 :CBC 19 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3448 [ - + ]: 19 : if (!tuplestore_gettupleslot(res->tuplestore, true, false, slot))
400 akapila@postgresql.o 3449 [ # # ]:UBC 0 : elog(ERROR, "failed to fetch tuple for the recovery progress");
3450 : :
400 akapila@postgresql.o 3451 :CBC 19 : remote_in_recovery = DatumGetBool(slot_getattr(slot, 1, &isnull));
3452 : :
3453 [ - + ]: 19 : if (remote_in_recovery)
400 akapila@postgresql.o 3454 [ # # ]:UBC 0 : ereport(ERROR,
3455 : : errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
3456 : : errmsg("cannot enable retain_dead_tuples if the publisher is in recovery"));
3457 : :
400 akapila@postgresql.o 3458 :CBC 19 : ExecDropSingleTupleTableSlot(slot);
3459 : :
3460 : 19 : walrcv_clear_result(res);
3461 : 19 : }
3462 : :
3463 : : /*
3464 : : * Check if the subscriber's configuration is adequate to enable the
3465 : : * retain_dead_tuples option.
3466 : : *
3467 : : * Issue an ERROR if the wal_level does not support the use of replication
3468 : : * slots when check_guc is set to true.
3469 : : *
3470 : : * Issue a WARNING if track_commit_timestamp is not enabled when check_guc is
3471 : : * set to true. This is only to highlight the importance of enabling
3472 : : * track_commit_timestamp instead of catching all the misconfigurations, as
3473 : : * this setting can be adjusted after subscription creation. Without it, the
3474 : : * apply worker will simply skip conflict detection.
3475 : : *
3476 : : * Issue a WARNING or NOTICE if the subscription is disabled and the retention
3477 : : * is active. Do not raise an ERROR since users can only modify
3478 : : * retain_dead_tuples for disabled subscriptions. And as long as the
3479 : : * subscription is enabled promptly, it will not pose issues.
3480 : : *
3481 : : * Issue a NOTICE to inform users that max_retention_duration is
3482 : : * ineffective when retain_dead_tuples is disabled for a subscription. An ERROR
3483 : : * is not issued because setting max_retention_duration causes no harm,
3484 : : * even when it is ineffective.
3485 : : */
3486 : : void
3487 : 338 : CheckSubDeadTupleRetention(bool check_guc, bool sub_disabled,
3488 : : int elevel_for_sub_disabled,
3489 : : bool retain_dead_tuples, bool retention_active,
3490 : : bool max_retention_set)
3491 : : {
3492 [ + + - + ]: 338 : Assert(elevel_for_sub_disabled == NOTICE ||
3493 : : elevel_for_sub_disabled == WARNING);
3494 : :
359 3495 [ + + ]: 338 : if (retain_dead_tuples)
3496 : : {
3497 [ + + - + ]: 17 : if (check_guc && wal_level < WAL_LEVEL_REPLICA)
359 akapila@postgresql.o 3498 [ # # ]:UBC 0 : ereport(ERROR,
3499 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3500 : : errmsg("\"wal_level\" is insufficient to create the replication slot required by retain_dead_tuples"),
3501 : : errhint("\"wal_level\" must be set to \"replica\" or \"logical\" at server start."));
3502 : :
359 akapila@postgresql.o 3503 [ + + + + ]:CBC 17 : if (check_guc && !track_commit_timestamp)
3504 [ + - ]: 4 : ereport(WARNING,
3505 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
3506 : : errmsg("commit timestamp and origin data required for detecting conflicts won't be retained"),
3507 : : errhint("Consider setting \"%s\" to true.",
3508 : : "track_commit_timestamp"));
3509 : :
3510 [ + + + - ]: 17 : if (sub_disabled && retention_active)
3511 [ + - + + ]: 7 : ereport(elevel_for_sub_disabled,
3512 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
3513 : : errmsg("deleted rows to detect conflicts would not be removed until the subscription is enabled"),
3514 : : (elevel_for_sub_disabled > NOTICE)
3515 : : ? errhint("Consider setting %s to false.",
3516 : : "retain_dead_tuples") : 0);
3517 : : }
3518 [ + + ]: 321 : else if (max_retention_set)
3519 : : {
3520 [ + - ]: 4 : ereport(NOTICE,
3521 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
3522 : : errmsg("max_retention_duration is ineffective when retain_dead_tuples is disabled"));
3523 : : }
400 3524 : 338 : }
3525 : :
3526 : : /*
3527 : : * Return true iff 'rv' is a member of the list.
3528 : : */
3529 : : static bool
308 3530 : 289 : list_member_rangevar(const List *list, RangeVar *rv)
3531 : : {
3532 [ + + + + : 1048 : foreach_ptr(PublicationRelKind, relinfo, list)
+ + ]
3533 : : {
3534 [ + + ]: 472 : if (equal(relinfo->rv, rv))
3535 : 1 : return true;
3536 : : }
3537 : :
3538 : 288 : return false;
3539 : : }
3540 : :
3541 : : /*
3542 : : * Get the list of tables and sequences which belong to specified publications
3543 : : * on the publisher connection.
3544 : : *
3545 : : * Note that we don't support the case where the column list is different for
3546 : : * the same table in different publications to avoid sending unwanted column
3547 : : * information for some of the rows. This can happen when both the column
3548 : : * list and row filter are specified for different publications.
3549 : : */
3550 : : static List *
3551 : 167 : fetch_relation_list(WalReceiverConn *wrconn, List *publications)
3552 : : {
3553 : : WalRcvExecResult *res;
3554 : : StringInfoData cmd;
3555 : : TupleTableSlot *slot;
3556 : 167 : Oid tableRow[4] = {TEXTOID, TEXTOID, CHAROID, InvalidOid};
3557 : 167 : List *relationlist = NIL;
1247 3558 : 167 : int server_version = walrcv_server_version(wrconn);
3559 : 167 : bool check_columnlist = (server_version >= 150000);
308 3560 [ + - ]: 167 : int column_count = check_columnlist ? 4 : 3;
3561 : : StringInfoData pub_names;
3562 : :
3444 peter_e@gmx.net 3563 : 167 : initStringInfo(&cmd);
294 drowley@postgresql.o 3564 : 167 : initStringInfo(&pub_names);
3565 : :
3566 : : /* Build the pub_names comma-separated string. */
3567 : 167 : GetPublicationsStr(publications, &pub_names, true);
3568 : :
3569 : : /* Get the list of relations from the publisher */
1247 akapila@postgresql.o 3570 [ + - ]: 167 : if (server_version >= 160000)
3571 : : {
308 3572 : 167 : tableRow[3] = INT2VECTOROID;
3573 : :
3574 : : /*
3575 : : * From version 16, we allowed passing multiple publications to the
3576 : : * function pg_get_publication_tables. This helped to filter out the
3577 : : * partition table whose ancestor is also published in this
3578 : : * publication array.
3579 : : *
3580 : : * Join pg_get_publication_tables with pg_publication to exclude
3581 : : * non-existing publications.
3582 : : *
3583 : : * Note that attrs are always stored in sorted order so we don't need
3584 : : * to worry if different publications have specified them in a
3585 : : * different order. See pub_collist_validate.
3586 : : */
3587 : 167 : appendStringInfo(&cmd, "SELECT DISTINCT n.nspname, c.relname, c.relkind, gpt.attrs\n"
3588 : : " FROM pg_class c\n"
3589 : : " JOIN pg_namespace n ON n.oid = c.relnamespace\n"
3590 : : " JOIN ( SELECT (pg_get_publication_tables(VARIADIC array_agg(pubname::text))).*\n"
3591 : : " FROM pg_publication\n"
3592 : : " WHERE pubname IN ( %s )) AS gpt\n"
3593 : : " ON gpt.relid = c.oid\n",
3594 : : pub_names.data);
3595 : :
3596 : : /* From version 19, inclusion of sequences in the target is supported */
3597 [ + - ]: 167 : if (server_version >= 190000)
3598 : 167 : appendStringInfo(&cmd,
3599 : : "UNION ALL\n"
3600 : : " SELECT DISTINCT s.schemaname, s.sequencename, " CppAsString2(RELKIND_SEQUENCE) "::\"char\" AS relkind, NULL::int2vector AS attrs\n"
3601 : : " FROM pg_catalog.pg_publication_sequences s\n"
3602 : : " WHERE s.pubname IN ( %s )",
3603 : : pub_names.data);
3604 : : }
3605 : : else
3606 : : {
308 akapila@postgresql.o 3607 :UBC 0 : tableRow[3] = NAMEARRAYOID;
3608 : 0 : appendStringInfoString(&cmd, "SELECT DISTINCT t.schemaname, t.tablename, " CppAsString2(RELKIND_RELATION) "::\"char\" AS relkind \n");
3609 : :
3610 : : /* Get column lists for each relation if the publisher supports it */
1247 3611 [ # # ]: 0 : if (check_columnlist)
3612 : 0 : appendStringInfoString(&cmd, ", t.attnames\n");
3613 : :
671 michael@paquier.xyz 3614 : 0 : appendStringInfo(&cmd, "FROM pg_catalog.pg_publication_tables t\n"
3615 : : " WHERE t.pubname IN ( %s )",
3616 : : pub_names.data);
3617 : : }
3618 : :
294 drowley@postgresql.o 3619 :CBC 167 : pfree(pub_names.data);
3620 : :
308 akapila@postgresql.o 3621 : 167 : res = walrcv_exec(wrconn, cmd.data, column_count, tableRow);
3444 peter_e@gmx.net 3622 : 167 : pfree(cmd.data);
3623 : :
3624 [ - + ]: 167 : if (res->status != WALRCV_OK_TUPLES)
3444 peter_e@gmx.net 3625 [ # # ]:UBC 0 : ereport(ERROR,
3626 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3627 : : errmsg("could not receive list of replicated tables from the publisher: %s",
3628 : : res->err)));
3629 : :
3630 : : /* Process tables. */
2842 andres@anarazel.de 3631 :CBC 167 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3444 peter_e@gmx.net 3632 [ + + ]: 473 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
3633 : : {
3634 : : char *nspname;
3635 : : char *relname;
3636 : : bool isnull;
3637 : : char relkind;
308 akapila@postgresql.o 3638 : 307 : PublicationRelKind *relinfo = palloc_object(PublicationRelKind);
3639 : :
3444 peter_e@gmx.net 3640 : 307 : nspname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
3641 [ - + ]: 307 : Assert(!isnull);
3642 : 307 : relname = TextDatumGetCString(slot_getattr(slot, 2, &isnull));
3643 [ - + ]: 307 : Assert(!isnull);
308 akapila@postgresql.o 3644 : 307 : relkind = DatumGetChar(slot_getattr(slot, 3, &isnull));
3645 [ - + ]: 307 : Assert(!isnull);
3646 : :
3647 : 307 : relinfo->rv = makeRangeVar(nspname, relname, -1);
3648 : 307 : relinfo->relkind = relkind;
3649 : :
3650 [ + + + - ]: 307 : if (relkind != RELKIND_SEQUENCE &&
3651 [ + + ]: 289 : check_columnlist &&
3652 : 289 : list_member_rangevar(relationlist, relinfo->rv))
1547 3653 [ + - ]: 1 : ereport(ERROR,
3654 : : errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
3655 : : errmsg("cannot use different column lists for table \"%s.%s\" in different publications",
3656 : : nspname, relname));
3657 : : else
308 3658 : 306 : relationlist = lappend(relationlist, relinfo);
3659 : :
3444 peter_e@gmx.net 3660 : 306 : ExecClearTuple(slot);
3661 : : }
3662 : 166 : ExecDropSingleTupleTableSlot(slot);
3663 : :
3664 : 166 : walrcv_clear_result(res);
3665 : :
308 akapila@postgresql.o 3666 : 166 : return relationlist;
3667 : : }
3668 : :
3669 : : /*
3670 : : * This is to report the connection failure while dropping replication slots.
3671 : : * Here, we report the WARNING for all tablesync slots so that user can drop
3672 : : * them manually, if required.
3673 : : */
3674 : : static void
2022 3675 : 4 : ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err)
3676 : : {
3677 : : ListCell *lc;
3678 : :
3679 [ - + - - : 4 : foreach(lc, rstates)
- + ]
3680 : : {
2022 akapila@postgresql.o 3681 :UBC 0 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
3682 : 0 : Oid relid = rstate->relid;
3683 : :
3684 : : /* Only cleanup resources of tablesync workers */
3685 [ # # ]: 0 : if (!OidIsValid(relid))
3686 : 0 : continue;
3687 : :
3688 : : /*
3689 : : * Caller needs to ensure that relstate doesn't change underneath us.
3690 : : * See DropSubscription where we get the relstates.
3691 : : */
3692 [ # # ]: 0 : if (rstate->state != SUBREL_STATE_SYNCDONE)
3693 : : {
3694 : 0 : char syncslotname[NAMEDATALEN] = {0};
3695 : :
2019 3696 : 0 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
3697 : : sizeof(syncslotname));
2022 3698 [ # # ]: 0 : elog(WARNING, "could not drop tablesync replication slot \"%s\"",
3699 : : syncslotname);
3700 : : }
3701 : : }
3702 : :
2022 akapila@postgresql.o 3703 [ + - ]:CBC 4 : ereport(ERROR,
3704 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3705 : : errmsg("could not connect to publisher when attempting to drop replication slot \"%s\": %s",
3706 : : slotname, err),
3707 : : /* translator: %s is an SQL ALTER command */
3708 : : errhint("Use %s to disable the subscription, and then use %s to disassociate it from the slot.",
3709 : : "ALTER SUBSCRIPTION ... DISABLE",
3710 : : "ALTER SUBSCRIPTION ... SET (slot_name = NONE)")));
3711 : : }
3712 : :
3713 : : /*
3714 : : * Check for duplicates in the given list of publications and error out if
3715 : : * found one. Add publications to datums as text datums, if datums is not
3716 : : * NULL.
3717 : : */
3718 : : static void
1969 peter@eisentraut.org 3719 : 292 : check_duplicates_in_publist(List *publist, Datum *datums)
3720 : : {
3721 : : ListCell *cell;
3722 : 292 : int j = 0;
3723 : :
3724 [ + - + + : 659 : foreach(cell, publist)
+ + ]
3725 : : {
3726 : 379 : char *name = strVal(lfirst(cell));
3727 : : ListCell *pcell;
3728 : :
3729 [ + - + - : 543 : foreach(pcell, publist)
+ - ]
3730 : : {
3731 : 543 : char *pname = strVal(lfirst(pcell));
3732 : :
3733 [ + + ]: 543 : if (pcell == cell)
3734 : 367 : break;
3735 : :
3736 [ + + ]: 176 : if (strcmp(name, pname) == 0)
3737 [ + - ]: 12 : ereport(ERROR,
3738 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
3739 : : errmsg("publication name \"%s\" used more than once",
3740 : : pname)));
3741 : : }
3742 : :
3743 [ + + ]: 367 : if (datums)
3744 : 311 : datums[j++] = CStringGetTextDatum(name);
3745 : : }
3746 : 280 : }
3747 : :
3748 : : /*
3749 : : * Merge current subscription's publications and user-specified publications
3750 : : * from ADD/DROP PUBLICATIONS.
3751 : : *
3752 : : * If addpub is true, we will add the list of publications into oldpublist.
3753 : : * Otherwise, we will delete the list of publications from oldpublist. The
3754 : : * returned list is a copy, oldpublist itself is not changed.
3755 : : *
3756 : : * subname is the subscription name, for error messages.
3757 : : */
3758 : : static List *
3759 : 35 : merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname)
3760 : : {
3761 : : ListCell *lc;
3762 : :
3763 : 35 : oldpublist = list_copy(oldpublist);
3764 : :
3765 : 35 : check_duplicates_in_publist(newpublist, NULL);
3766 : :
3767 [ + - + + : 59 : foreach(lc, newpublist)
+ + ]
3768 : : {
3769 : 44 : char *name = strVal(lfirst(lc));
3770 : : ListCell *lc2;
3771 : 44 : bool found = false;
3772 : :
3773 [ + - + + : 86 : foreach(lc2, oldpublist)
+ + ]
3774 : : {
3775 : 71 : char *pubname = strVal(lfirst(lc2));
3776 : :
3777 [ + + ]: 71 : if (strcmp(name, pubname) == 0)
3778 : : {
3779 : 29 : found = true;
3780 [ + + ]: 29 : if (addpub)
3781 [ + - ]: 8 : ereport(ERROR,
3782 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
3783 : : errmsg("publication \"%s\" is already in subscription \"%s\"",
3784 : : name, subname)));
3785 : : else
3786 : 21 : oldpublist = foreach_delete_current(oldpublist, lc2);
3787 : :
3788 : 21 : break;
3789 : : }
3790 : : }
3791 : :
3792 [ + + + - ]: 36 : if (addpub && !found)
3793 : 11 : oldpublist = lappend(oldpublist, makeString(name));
3794 [ + - + + ]: 25 : else if (!addpub && !found)
3795 [ + - ]: 4 : ereport(ERROR,
3796 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
3797 : : errmsg("publication \"%s\" is not in subscription \"%s\"",
3798 : : name, subname)));
3799 : : }
3800 : :
3801 : : /*
3802 : : * XXX Probably no strong reason for this, but for now it's to make ALTER
3803 : : * SUBSCRIPTION ... DROP PUBLICATION consistent with SET PUBLICATION.
3804 : : */
3805 [ + + ]: 15 : if (!oldpublist)
3806 [ + - ]: 4 : ereport(ERROR,
3807 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
3808 : : errmsg("cannot drop all the publications from a subscription")));
3809 : :
3810 : 11 : return oldpublist;
3811 : : }
3812 : :
3813 : : /*
3814 : : * Extract the streaming mode value from a DefElem. This is like
3815 : : * defGetBoolean() but also accepts the special value of "parallel".
3816 : : */
3817 : : char
1326 akapila@postgresql.o 3818 : 475 : defGetStreamingMode(DefElem *def)
3819 : : {
3820 : : /*
3821 : : * If no parameter value given, assume "true" is meant.
3822 : : */
3823 [ - + ]: 475 : if (!def->arg)
1326 akapila@postgresql.o 3824 :UBC 0 : return LOGICALREP_STREAM_ON;
3825 : :
3826 : : /*
3827 : : * Allow 0, 1, "false", "true", "off", "on" or "parallel".
3828 : : */
1326 akapila@postgresql.o 3829 [ - + ]:CBC 475 : switch (nodeTag(def->arg))
3830 : : {
1326 akapila@postgresql.o 3831 :UBC 0 : case T_Integer:
3832 [ # # # ]: 0 : switch (intVal(def->arg))
3833 : : {
3834 : 0 : case 0:
3835 : 0 : return LOGICALREP_STREAM_OFF;
3836 : 0 : case 1:
3837 : 0 : return LOGICALREP_STREAM_ON;
3838 : 0 : default:
3839 : : /* otherwise, error out below */
3840 : 0 : break;
3841 : : }
3842 : 0 : break;
1326 akapila@postgresql.o 3843 :CBC 475 : default:
3844 : : {
3845 : 475 : char *sval = defGetString(def);
3846 : :
3847 : : /*
3848 : : * The set of strings accepted here should match up with the
3849 : : * grammar's opt_boolean_or_string production.
3850 : : */
3851 [ + + + + ]: 946 : if (pg_strcasecmp(sval, "false") == 0 ||
3852 : 471 : pg_strcasecmp(sval, "off") == 0)
3853 : 7 : return LOGICALREP_STREAM_OFF;
3854 [ + + + + ]: 924 : if (pg_strcasecmp(sval, "true") == 0 ||
3855 : 456 : pg_strcasecmp(sval, "on") == 0)
3856 : 49 : return LOGICALREP_STREAM_ON;
3857 [ + + ]: 419 : if (pg_strcasecmp(sval, "parallel") == 0)
3858 : 415 : return LOGICALREP_STREAM_PARALLEL;
3859 : : }
3860 : 4 : break;
3861 : : }
3862 : :
3863 [ + - ]: 4 : ereport(ERROR,
3864 : : (errcode(ERRCODE_SYNTAX_ERROR),
3865 : : errmsg("%s requires a Boolean value or \"parallel\"",
3866 : : def->defname)));
3867 : : return LOGICALREP_STREAM_OFF; /* keep compiler quiet */
3868 : : }
|
