Branch data 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/lsyscache.h"
58 : : #include "utils/memutils.h"
59 : : #include "utils/pg_lsn.h"
60 : : #include "utils/syscache.h"
61 : :
62 : : /*
63 : : * Options that can be specified by the user in CREATE/ALTER SUBSCRIPTION
64 : : * command.
65 : : */
66 : : #define SUBOPT_CONNECT 0x00000001
67 : : #define SUBOPT_ENABLED 0x00000002
68 : : #define SUBOPT_CREATE_SLOT 0x00000004
69 : : #define SUBOPT_SLOT_NAME 0x00000008
70 : : #define SUBOPT_COPY_DATA 0x00000010
71 : : #define SUBOPT_SYNCHRONOUS_COMMIT 0x00000020
72 : : #define SUBOPT_REFRESH 0x00000040
73 : : #define SUBOPT_BINARY 0x00000080
74 : : #define SUBOPT_STREAMING 0x00000100
75 : : #define SUBOPT_TWOPHASE_COMMIT 0x00000200
76 : : #define SUBOPT_DISABLE_ON_ERR 0x00000400
77 : : #define SUBOPT_PASSWORD_REQUIRED 0x00000800
78 : : #define SUBOPT_RUN_AS_OWNER 0x00001000
79 : : #define SUBOPT_FAILOVER 0x00002000
80 : : #define SUBOPT_RETAIN_DEAD_TUPLES 0x00004000
81 : : #define SUBOPT_MAX_RETENTION_DURATION 0x00008000
82 : : #define SUBOPT_WAL_RECEIVER_TIMEOUT 0x00010000
83 : : #define SUBOPT_LSN 0x00020000
84 : : #define SUBOPT_ORIGIN 0x00040000
85 : : #define SUBOPT_CONFLICT_LOG_DEST 0x00080000
86 : :
87 : : /* check if the 'val' has 'bits' set */
88 : : #define IsSet(val, bits) (((val) & (bits)) == (bits))
89 : :
90 : : /*
91 : : * Structure to hold a bitmap representing the user-provided CREATE/ALTER
92 : : * SUBSCRIPTION command options and the parsed/default values of each of them.
93 : : */
94 : : typedef struct SubOpts
95 : : {
96 : : uint32 specified_opts;
97 : : char *slot_name;
98 : : char *synchronous_commit;
99 : : bool connect;
100 : : bool enabled;
101 : : bool create_slot;
102 : : bool copy_data;
103 : : bool refresh;
104 : : bool binary;
105 : : char streaming;
106 : : bool twophase;
107 : : bool disableonerr;
108 : : bool passwordrequired;
109 : : bool runasowner;
110 : : bool failover;
111 : : bool retaindeadtuples;
112 : : int32 maxretention;
113 : : char *origin;
114 : : ConflictLogDest conflictlogdest;
115 : : XLogRecPtr lsn;
116 : : char *wal_receiver_timeout;
117 : : } SubOpts;
118 : :
119 : : /*
120 : : * PublicationRelKind represents a relation included in a publication.
121 : : * It stores the schema-qualified relation name (rv) and its kind (relkind).
122 : : */
123 : : typedef struct PublicationRelKind
124 : : {
125 : : RangeVar *rv;
126 : : char relkind;
127 : : } PublicationRelKind;
128 : :
129 : : static List *fetch_relation_list(WalReceiverConn *wrconn, List *publications);
130 : : static void check_publications_origin_tables(WalReceiverConn *wrconn,
131 : : List *publications, bool copydata,
132 : : bool retain_dead_tuples,
133 : : char *origin,
134 : : Oid *subrel_local_oids,
135 : : int subrel_count, char *subname);
136 : : static void check_publications_origin_sequences(WalReceiverConn *wrconn,
137 : : List *publications,
138 : : bool copydata, char *origin,
139 : : Oid *subrel_local_oids,
140 : : int subrel_count,
141 : : char *subname);
142 : : static void check_duplicates_in_publist(List *publist, Datum *datums);
143 : : static List *merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname);
144 : : static void ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err);
145 : : static void CheckAlterSubOption(Subscription *sub, const char *option,
146 : : bool slot_needs_update, bool isTopLevel);
147 : : static bool alter_sub_conflict_log_dest(Subscription *sub,
148 : : ConflictLogDest oldlogdest,
149 : : ConflictLogDest newlogdest,
150 : : Oid *conflicttablerelid);
151 : : static void drop_sub_conflict_log_table(Oid subid, char *subname,
152 : : Oid subconflictlogrelid);
153 : :
154 : : /*
155 : : * Common option parsing function for CREATE and ALTER SUBSCRIPTION commands.
156 : : *
157 : : * Since not all options can be specified in both commands, this function
158 : : * will report an error if mutually exclusive options are specified.
159 : : */
160 : : static void
161 : 745 : parse_subscription_options(ParseState *pstate, List *stmt_options,
162 : : uint32 supported_opts, SubOpts *opts)
163 : : {
164 : : ListCell *lc;
165 : :
166 : : /* Start out with cleared opts. */
167 : 745 : memset(opts, 0, sizeof(SubOpts));
168 : :
169 : : /* caller must expect some option */
170 : : Assert(supported_opts != 0);
171 : :
172 : : /* If connect option is supported, these others also need to be. */
173 : : Assert(!IsSet(supported_opts, SUBOPT_CONNECT) ||
174 : : IsSet(supported_opts, SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
175 : : SUBOPT_COPY_DATA));
176 : :
177 : : /* Set default values for the supported options. */
178 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_CONNECT))
179 : 335 : opts->connect = true;
180 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_ENABLED))
181 : 422 : opts->enabled = true;
182 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_CREATE_SLOT))
183 : 335 : opts->create_slot = true;
184 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_COPY_DATA))
185 : 434 : opts->copy_data = true;
186 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_REFRESH))
187 : 58 : opts->refresh = true;
188 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_BINARY))
189 : 544 : opts->binary = false;
190 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_STREAMING))
191 : 544 : opts->streaming = LOGICALREP_STREAM_PARALLEL;
192 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT))
193 : 544 : opts->twophase = false;
194 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR))
195 : 544 : opts->disableonerr = false;
196 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED))
197 : 544 : opts->passwordrequired = true;
198 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER))
199 : 544 : opts->runasowner = false;
200 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_FAILOVER))
201 : 544 : opts->failover = false;
202 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_RETAIN_DEAD_TUPLES))
203 : 544 : opts->retaindeadtuples = false;
204 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_MAX_RETENTION_DURATION))
205 : 544 : opts->maxretention = 0;
206 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_ORIGIN))
207 : 544 : opts->origin = pstrdup(LOGICALREP_ORIGIN_ANY);
208 [ + + ]: 745 : if (IsSet(supported_opts, SUBOPT_CONFLICT_LOG_DEST))
209 : 544 : opts->conflictlogdest = CONFLICT_LOG_DEST_LOG;
210 : :
211 : : /* Parse options */
212 [ + + + + : 1506 : foreach(lc, stmt_options)
+ + ]
213 : : {
214 : 825 : DefElem *defel = (DefElem *) lfirst(lc);
215 : :
216 [ + + ]: 825 : if (IsSet(supported_opts, SUBOPT_CONNECT) &&
217 [ + + ]: 459 : strcmp(defel->defname, "connect") == 0)
218 : : {
219 [ - + ]: 171 : if (IsSet(opts->specified_opts, SUBOPT_CONNECT))
220 : 0 : errorConflictingDefElem(defel, pstate);
221 : :
222 : 171 : opts->specified_opts |= SUBOPT_CONNECT;
223 : 171 : opts->connect = defGetBoolean(defel);
224 : : }
225 [ + + ]: 654 : else if (IsSet(supported_opts, SUBOPT_ENABLED) &&
226 [ + + ]: 375 : strcmp(defel->defname, "enabled") == 0)
227 : : {
228 [ - + ]: 111 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
229 : 0 : errorConflictingDefElem(defel, pstate);
230 : :
231 : 111 : opts->specified_opts |= SUBOPT_ENABLED;
232 : 111 : opts->enabled = defGetBoolean(defel);
233 : : }
234 [ + + ]: 543 : else if (IsSet(supported_opts, SUBOPT_CREATE_SLOT) &&
235 [ + + ]: 264 : strcmp(defel->defname, "create_slot") == 0)
236 : : {
237 [ - + ]: 25 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
238 : 0 : errorConflictingDefElem(defel, pstate);
239 : :
240 : 25 : opts->specified_opts |= SUBOPT_CREATE_SLOT;
241 : 25 : opts->create_slot = defGetBoolean(defel);
242 : : }
243 [ + + ]: 518 : else if (IsSet(supported_opts, SUBOPT_SLOT_NAME) &&
244 [ + + ]: 450 : strcmp(defel->defname, "slot_name") == 0)
245 : : {
246 [ - + ]: 143 : if (IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
247 : 0 : errorConflictingDefElem(defel, pstate);
248 : :
249 : 143 : opts->specified_opts |= SUBOPT_SLOT_NAME;
250 : 143 : opts->slot_name = defGetString(defel);
251 : :
252 : : /* Setting slot_name = NONE is treated as no slot name. */
253 [ + + ]: 282 : if (strcmp(opts->slot_name, "none") == 0)
254 : 115 : opts->slot_name = NULL;
255 : : else
256 : 28 : ReplicationSlotValidateName(opts->slot_name, false, ERROR);
257 : : }
258 [ + + ]: 375 : else if (IsSet(supported_opts, SUBOPT_COPY_DATA) &&
259 [ + + ]: 225 : strcmp(defel->defname, "copy_data") == 0)
260 : : {
261 [ - + ]: 31 : if (IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
262 : 0 : errorConflictingDefElem(defel, pstate);
263 : :
264 : 31 : opts->specified_opts |= SUBOPT_COPY_DATA;
265 : 31 : opts->copy_data = defGetBoolean(defel);
266 : : }
267 [ + + ]: 344 : else if (IsSet(supported_opts, SUBOPT_SYNCHRONOUS_COMMIT) &&
268 [ + + ]: 281 : strcmp(defel->defname, "synchronous_commit") == 0)
269 : : {
270 [ - + ]: 16 : if (IsSet(opts->specified_opts, SUBOPT_SYNCHRONOUS_COMMIT))
271 : 0 : errorConflictingDefElem(defel, pstate);
272 : :
273 : 16 : opts->specified_opts |= SUBOPT_SYNCHRONOUS_COMMIT;
274 : 16 : opts->synchronous_commit = defGetString(defel);
275 : :
276 : : /* Test if the given value is valid for synchronous_commit GUC. */
277 : 16 : (void) set_config_option("synchronous_commit", opts->synchronous_commit,
278 : : PGC_BACKEND, PGC_S_TEST, GUC_ACTION_SET,
279 : : false, 0, false);
280 : : }
281 [ + + ]: 328 : else if (IsSet(supported_opts, SUBOPT_REFRESH) &&
282 [ + - ]: 48 : strcmp(defel->defname, "refresh") == 0)
283 : : {
284 [ - + ]: 48 : if (IsSet(opts->specified_opts, SUBOPT_REFRESH))
285 : 0 : errorConflictingDefElem(defel, pstate);
286 : :
287 : 48 : opts->specified_opts |= SUBOPT_REFRESH;
288 : 48 : opts->refresh = defGetBoolean(defel);
289 : : }
290 [ + + ]: 280 : else if (IsSet(supported_opts, SUBOPT_BINARY) &&
291 [ + + ]: 265 : strcmp(defel->defname, "binary") == 0)
292 : : {
293 [ - + ]: 19 : if (IsSet(opts->specified_opts, SUBOPT_BINARY))
294 : 0 : errorConflictingDefElem(defel, pstate);
295 : :
296 : 19 : opts->specified_opts |= SUBOPT_BINARY;
297 : 19 : opts->binary = defGetBoolean(defel);
298 : : }
299 [ + + ]: 261 : else if (IsSet(supported_opts, SUBOPT_STREAMING) &&
300 [ + + ]: 246 : strcmp(defel->defname, "streaming") == 0)
301 : : {
302 [ - + ]: 43 : if (IsSet(opts->specified_opts, SUBOPT_STREAMING))
303 : 0 : errorConflictingDefElem(defel, pstate);
304 : :
305 : 43 : opts->specified_opts |= SUBOPT_STREAMING;
306 : 43 : opts->streaming = defGetStreamingMode(defel);
307 : : }
308 [ + + ]: 218 : else if (IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT) &&
309 [ + + ]: 203 : strcmp(defel->defname, "two_phase") == 0)
310 : : {
311 [ - + ]: 24 : if (IsSet(opts->specified_opts, SUBOPT_TWOPHASE_COMMIT))
312 : 0 : errorConflictingDefElem(defel, pstate);
313 : :
314 : 24 : opts->specified_opts |= SUBOPT_TWOPHASE_COMMIT;
315 : 24 : opts->twophase = defGetBoolean(defel);
316 : : }
317 [ + + ]: 194 : else if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR) &&
318 [ + + ]: 179 : strcmp(defel->defname, "disable_on_error") == 0)
319 : : {
320 [ - + ]: 21 : if (IsSet(opts->specified_opts, SUBOPT_DISABLE_ON_ERR))
321 : 0 : errorConflictingDefElem(defel, pstate);
322 : :
323 : 21 : opts->specified_opts |= SUBOPT_DISABLE_ON_ERR;
324 : 21 : opts->disableonerr = defGetBoolean(defel);
325 : : }
326 [ + + ]: 173 : else if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED) &&
327 [ + + ]: 158 : strcmp(defel->defname, "password_required") == 0)
328 : : {
329 [ - + ]: 17 : if (IsSet(opts->specified_opts, SUBOPT_PASSWORD_REQUIRED))
330 : 0 : errorConflictingDefElem(defel, pstate);
331 : :
332 : 17 : opts->specified_opts |= SUBOPT_PASSWORD_REQUIRED;
333 : 17 : opts->passwordrequired = defGetBoolean(defel);
334 : : }
335 [ + + ]: 156 : else if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER) &&
336 [ + + ]: 141 : strcmp(defel->defname, "run_as_owner") == 0)
337 : : {
338 [ - + ]: 11 : if (IsSet(opts->specified_opts, SUBOPT_RUN_AS_OWNER))
339 : 0 : errorConflictingDefElem(defel, pstate);
340 : :
341 : 11 : opts->specified_opts |= SUBOPT_RUN_AS_OWNER;
342 : 11 : opts->runasowner = defGetBoolean(defel);
343 : : }
344 [ + + ]: 145 : else if (IsSet(supported_opts, SUBOPT_FAILOVER) &&
345 [ + + ]: 130 : strcmp(defel->defname, "failover") == 0)
346 : : {
347 [ - + ]: 16 : if (IsSet(opts->specified_opts, SUBOPT_FAILOVER))
348 : 0 : errorConflictingDefElem(defel, pstate);
349 : :
350 : 16 : opts->specified_opts |= SUBOPT_FAILOVER;
351 : 16 : opts->failover = defGetBoolean(defel);
352 : : }
353 [ + + ]: 129 : else if (IsSet(supported_opts, SUBOPT_RETAIN_DEAD_TUPLES) &&
354 [ + + ]: 114 : strcmp(defel->defname, "retain_dead_tuples") == 0)
355 : : {
356 [ - + ]: 14 : if (IsSet(opts->specified_opts, SUBOPT_RETAIN_DEAD_TUPLES))
357 : 0 : errorConflictingDefElem(defel, pstate);
358 : :
359 : 14 : opts->specified_opts |= SUBOPT_RETAIN_DEAD_TUPLES;
360 : 14 : opts->retaindeadtuples = defGetBoolean(defel);
361 : : }
362 [ + + ]: 115 : else if (IsSet(supported_opts, SUBOPT_MAX_RETENTION_DURATION) &&
363 [ + + ]: 100 : strcmp(defel->defname, "max_retention_duration") == 0)
364 : : {
365 [ - + ]: 22 : if (IsSet(opts->specified_opts, SUBOPT_MAX_RETENTION_DURATION))
366 : 0 : errorConflictingDefElem(defel, pstate);
367 : :
368 : 22 : opts->specified_opts |= SUBOPT_MAX_RETENTION_DURATION;
369 : 22 : opts->maxretention = defGetInt32(defel);
370 : :
371 [ + + ]: 18 : if (opts->maxretention < 0)
372 [ + - ]: 8 : ereport(ERROR,
373 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
374 : : errmsg("max_retention_duration cannot be negative"));
375 : : }
376 [ + + ]: 93 : else if (IsSet(supported_opts, SUBOPT_ORIGIN) &&
377 [ + + ]: 78 : strcmp(defel->defname, "origin") == 0)
378 : : {
379 [ - + ]: 24 : if (IsSet(opts->specified_opts, SUBOPT_ORIGIN))
380 : 0 : errorConflictingDefElem(defel, pstate);
381 : :
382 : 24 : opts->specified_opts |= SUBOPT_ORIGIN;
383 : 24 : pfree(opts->origin);
384 : :
385 : : /*
386 : : * Even though the "origin" parameter allows only "none" and "any"
387 : : * values, it is implemented as a string type so that the
388 : : * parameter can be extended in future versions to support
389 : : * filtering using origin names specified by the user.
390 : : */
391 : 24 : opts->origin = defGetString(defel);
392 : :
393 [ + + + + ]: 34 : if ((pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_NONE) != 0) &&
394 : 10 : (pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_ANY) != 0))
395 [ + - ]: 4 : ereport(ERROR,
396 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
397 : : errmsg("unrecognized origin value: \"%s\"", opts->origin));
398 : : }
399 [ + + ]: 69 : else if (IsSet(supported_opts, SUBOPT_LSN) &&
400 [ + - ]: 15 : strcmp(defel->defname, "lsn") == 0)
401 : 11 : {
402 : 15 : char *lsn_str = defGetString(defel);
403 : : XLogRecPtr lsn;
404 : :
405 [ - + ]: 15 : if (IsSet(opts->specified_opts, SUBOPT_LSN))
406 : 0 : errorConflictingDefElem(defel, pstate);
407 : :
408 : : /* Setting lsn = NONE is treated as resetting LSN */
409 [ + + ]: 15 : if (strcmp(lsn_str, "none") == 0)
410 : 4 : lsn = InvalidXLogRecPtr;
411 : : else
412 : : {
413 : : /* Parse the argument as LSN */
414 : 11 : lsn = DatumGetLSN(DirectFunctionCall1(pg_lsn_in,
415 : : CStringGetDatum(lsn_str)));
416 : :
417 [ + + ]: 11 : if (!XLogRecPtrIsValid(lsn))
418 [ + - ]: 4 : ereport(ERROR,
419 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
420 : : errmsg("invalid WAL location (LSN): %s", lsn_str)));
421 : : }
422 : :
423 : 11 : opts->specified_opts |= SUBOPT_LSN;
424 : 11 : opts->lsn = lsn;
425 : : }
426 [ + - ]: 54 : else if (IsSet(supported_opts, SUBOPT_WAL_RECEIVER_TIMEOUT) &&
427 [ + + ]: 54 : strcmp(defel->defname, "wal_receiver_timeout") == 0)
428 : 8 : {
429 : : bool parsed;
430 : : int val;
431 : :
432 [ - + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_WAL_RECEIVER_TIMEOUT))
433 : 0 : errorConflictingDefElem(defel, pstate);
434 : :
435 : 12 : opts->specified_opts |= SUBOPT_WAL_RECEIVER_TIMEOUT;
436 : 12 : opts->wal_receiver_timeout = defGetString(defel);
437 : :
438 : : /*
439 : : * Test if the given value is valid for wal_receiver_timeout GUC.
440 : : * Skip this test if the value is -1, since -1 is allowed for the
441 : : * wal_receiver_timeout subscription option, but not for the GUC
442 : : * itself.
443 : : */
444 : 12 : parsed = parse_int(opts->wal_receiver_timeout, &val, 0, NULL);
445 [ + + - + ]: 12 : if (!parsed || val != -1)
446 : 8 : (void) set_config_option("wal_receiver_timeout", opts->wal_receiver_timeout,
447 : : PGC_BACKEND, PGC_S_TEST, GUC_ACTION_SET,
448 : : false, 0, false);
449 : : }
450 [ + - ]: 42 : else if (IsSet(supported_opts, SUBOPT_CONFLICT_LOG_DEST) &&
451 [ + + ]: 42 : strcmp(defel->defname, "conflict_log_destination") == 0)
452 : 30 : {
453 : : char *val;
454 : :
455 [ - + ]: 38 : if (IsSet(opts->specified_opts, SUBOPT_CONFLICT_LOG_DEST))
456 : 0 : errorConflictingDefElem(defel, pstate);
457 : :
458 : 38 : val = defGetString(defel);
459 : 38 : opts->conflictlogdest = GetConflictLogDest(val);
460 : 30 : opts->specified_opts |= SUBOPT_CONFLICT_LOG_DEST;
461 : : }
462 : : else
463 [ + - ]: 4 : ereport(ERROR,
464 : : (errcode(ERRCODE_SYNTAX_ERROR),
465 : : errmsg("unrecognized subscription parameter: \"%s\"", defel->defname)));
466 : : }
467 : :
468 : : /*
469 : : * We've been explicitly asked to not connect, that requires some
470 : : * additional processing.
471 : : */
472 [ + + + + ]: 681 : if (!opts->connect && IsSet(supported_opts, SUBOPT_CONNECT))
473 : : {
474 : : /* Check for incompatible options from the user. */
475 [ + - ]: 131 : if (opts->enabled &&
476 [ + + ]: 131 : IsSet(opts->specified_opts, SUBOPT_ENABLED))
477 [ + - ]: 4 : ereport(ERROR,
478 : : (errcode(ERRCODE_SYNTAX_ERROR),
479 : : /*- translator: both %s are strings of the form "option = value" */
480 : : errmsg("%s and %s are mutually exclusive options",
481 : : "connect = false", "enabled = true")));
482 : :
483 [ + + ]: 127 : if (opts->create_slot &&
484 [ + + ]: 123 : IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
485 [ + - ]: 4 : ereport(ERROR,
486 : : (errcode(ERRCODE_SYNTAX_ERROR),
487 : : errmsg("%s and %s are mutually exclusive options",
488 : : "connect = false", "create_slot = true")));
489 : :
490 [ + + ]: 123 : if (opts->copy_data &&
491 [ + + ]: 119 : IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
492 [ + - ]: 4 : ereport(ERROR,
493 : : (errcode(ERRCODE_SYNTAX_ERROR),
494 : : errmsg("%s and %s are mutually exclusive options",
495 : : "connect = false", "copy_data = true")));
496 : :
497 : : /* Change the defaults of other options. */
498 : 119 : opts->enabled = false;
499 : 119 : opts->create_slot = false;
500 : 119 : opts->copy_data = false;
501 : : }
502 : :
503 : : /*
504 : : * Do additional checking for disallowed combination when slot_name = NONE
505 : : * was used.
506 : : */
507 [ + + ]: 669 : if (!opts->slot_name &&
508 [ + + ]: 645 : IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
509 : : {
510 [ + + ]: 111 : if (opts->enabled)
511 : : {
512 [ + + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
513 [ + - ]: 4 : ereport(ERROR,
514 : : (errcode(ERRCODE_SYNTAX_ERROR),
515 : : /*- translator: both %s are strings of the form "option = value" */
516 : : errmsg("%s and %s are mutually exclusive options",
517 : : "slot_name = NONE", "enabled = true")));
518 : : else
519 [ + - ]: 8 : ereport(ERROR,
520 : : (errcode(ERRCODE_SYNTAX_ERROR),
521 : : /*- translator: both %s are strings of the form "option = value" */
522 : : errmsg("subscription with %s must also set %s",
523 : : "slot_name = NONE", "enabled = false")));
524 : : }
525 : :
526 [ + + ]: 99 : if (opts->create_slot)
527 : : {
528 [ + + ]: 8 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
529 [ + - ]: 4 : ereport(ERROR,
530 : : (errcode(ERRCODE_SYNTAX_ERROR),
531 : : /*- translator: both %s are strings of the form "option = value" */
532 : : errmsg("%s and %s are mutually exclusive options",
533 : : "slot_name = NONE", "create_slot = true")));
534 : : else
535 [ + - ]: 4 : ereport(ERROR,
536 : : (errcode(ERRCODE_SYNTAX_ERROR),
537 : : /*- translator: both %s are strings of the form "option = value" */
538 : : errmsg("subscription with %s must also set %s",
539 : : "slot_name = NONE", "create_slot = false")));
540 : : }
541 : : }
542 : 649 : }
543 : :
544 : : /*
545 : : * Append a suitably-quoted identifier or string literal to buf.
546 : : * "quote" should be either a double-quote or single-quote character.
547 : : *
548 : : * Caution: this quoting logic is sufficient for identifiers and literals
549 : : * in the replication grammar, but not always in regular SQL. Specifically,
550 : : * it'd fail for a string literal if standard_conforming_strings is off.
551 : : */
552 : : static void
553 : 291 : appendQuotedString(StringInfo buf, const char *str, char quote)
554 : : {
555 : 291 : appendStringInfoChar(buf, quote);
556 [ + + ]: 9272 : while (*str)
557 : : {
558 : 8981 : char c = *str++;
559 : :
560 [ - + ]: 8981 : if (c == quote)
561 : 0 : appendStringInfoChar(buf, c);
562 : 8981 : appendStringInfoChar(buf, c);
563 : : }
564 : 291 : appendStringInfoChar(buf, quote);
565 : 291 : }
566 : :
567 : : #define appendQuotedIdentifier(b, s) appendQuotedString(b, s, '"')
568 : : #define appendQuotedLiteral(b, s) appendQuotedString(b, s, '\'')
569 : :
570 : : /*
571 : : * Check that the specified publications are present on the publisher.
572 : : */
573 : : static void
574 : 135 : check_publications(WalReceiverConn *wrconn, List *publications)
575 : : {
576 : : WalRcvExecResult *res;
577 : : StringInfoData cmd;
578 : : TupleTableSlot *slot;
579 : 135 : List *publicationsCopy = NIL;
580 : 135 : Oid tableRow[1] = {TEXTOID};
581 : :
582 : 135 : initStringInfo(&cmd);
583 : 135 : appendStringInfoString(&cmd, "SELECT t.pubname FROM\n"
584 : : " pg_catalog.pg_publication t WHERE\n"
585 : : " t.pubname IN (");
586 : 135 : GetPublicationsStr(publications, &cmd, true);
587 : 135 : appendStringInfoChar(&cmd, ')');
588 : :
589 : 135 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
590 : 135 : pfree(cmd.data);
591 : :
592 [ - + ]: 135 : if (res->status != WALRCV_OK_TUPLES)
593 [ # # ]: 0 : ereport(ERROR,
594 : : errmsg("could not receive list of publications from the publisher: %s",
595 : : res->err));
596 : :
597 : 135 : publicationsCopy = list_copy(publications);
598 : :
599 : : /* Process publication(s). */
600 : 135 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
601 [ + + ]: 299 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
602 : : {
603 : : char *pubname;
604 : : bool isnull;
605 : :
606 : 164 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
607 : : Assert(!isnull);
608 : :
609 : : /* Delete the publication present in publisher from the list. */
610 : 164 : publicationsCopy = list_delete(publicationsCopy, makeString(pubname));
611 : 164 : ExecClearTuple(slot);
612 : : }
613 : :
614 : 135 : ExecDropSingleTupleTableSlot(slot);
615 : :
616 : 135 : walrcv_clear_result(res);
617 : :
618 [ + + ]: 135 : if (list_length(publicationsCopy))
619 : : {
620 : : /* Prepare the list of non-existent publication(s) for error message. */
621 : : StringInfoData pubnames;
622 : :
623 : 4 : initStringInfo(&pubnames);
624 : :
625 : 4 : GetPublicationsStr(publicationsCopy, &pubnames, false);
626 [ + - ]: 4 : ereport(WARNING,
627 : : errcode(ERRCODE_UNDEFINED_OBJECT),
628 : : errmsg_plural("publication %s does not exist on the publisher",
629 : : "publications %s do not exist on the publisher",
630 : : list_length(publicationsCopy),
631 : : pubnames.data));
632 : : }
633 : 135 : }
634 : :
635 : : /*
636 : : * Auxiliary function to build a text array out of a list of String nodes.
637 : : */
638 : : static Datum
639 : 255 : publicationListToArray(List *publist)
640 : : {
641 : : ArrayType *arr;
642 : : Datum *datums;
643 : : MemoryContext memcxt;
644 : : MemoryContext oldcxt;
645 : :
646 : : /* Create memory context for temporary allocations. */
647 : 255 : memcxt = AllocSetContextCreate(CurrentMemoryContext,
648 : : "publicationListToArray to array",
649 : : ALLOCSET_DEFAULT_SIZES);
650 : 255 : oldcxt = MemoryContextSwitchTo(memcxt);
651 : :
652 : 255 : datums = palloc_array(Datum, list_length(publist));
653 : :
654 : 255 : check_duplicates_in_publist(publist, datums);
655 : :
656 : 251 : MemoryContextSwitchTo(oldcxt);
657 : :
658 : 251 : arr = construct_array_builtin(datums, list_length(publist), TEXTOID);
659 : :
660 : 251 : MemoryContextDelete(memcxt);
661 : :
662 : 251 : return PointerGetDatum(arr);
663 : : }
664 : :
665 : : /*
666 : : * Create new subscription.
667 : : */
668 : : ObjectAddress
669 : 335 : CreateSubscription(ParseState *pstate, CreateSubscriptionStmt *stmt,
670 : : bool isTopLevel)
671 : : {
672 : : Relation rel;
673 : : ObjectAddress myself;
674 : : Oid subid;
675 : : bool nulls[Natts_pg_subscription];
676 : : Datum values[Natts_pg_subscription];
677 : 335 : Oid owner = GetUserId();
678 : : HeapTuple tup;
679 : 335 : Oid serverid = InvalidOid;
680 : 335 : char *conninfo = NULL;
681 : : char originname[NAMEDATALEN];
682 : : List *publications;
683 : : uint32 supported_opts;
684 : 335 : SubOpts opts = {0};
685 : : AclResult aclresult;
686 : 335 : Oid logrelid = InvalidOid;
687 : :
688 : : /*
689 : : * Parse and check options.
690 : : *
691 : : * Connection and publication should not be specified here.
692 : : */
693 : 335 : supported_opts = (SUBOPT_CONNECT | SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
694 : : SUBOPT_SLOT_NAME | SUBOPT_COPY_DATA |
695 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
696 : : SUBOPT_STREAMING | SUBOPT_TWOPHASE_COMMIT |
697 : : SUBOPT_DISABLE_ON_ERR | SUBOPT_PASSWORD_REQUIRED |
698 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER |
699 : : SUBOPT_RETAIN_DEAD_TUPLES |
700 : : SUBOPT_MAX_RETENTION_DURATION |
701 : : SUBOPT_WAL_RECEIVER_TIMEOUT | SUBOPT_ORIGIN |
702 : : SUBOPT_CONFLICT_LOG_DEST);
703 : 335 : parse_subscription_options(pstate, stmt->options, supported_opts, &opts);
704 : :
705 : : /*
706 : : * Since creating a replication slot is not transactional, rolling back
707 : : * the transaction leaves the created replication slot. So we cannot run
708 : : * CREATE SUBSCRIPTION inside a transaction block if creating a
709 : : * replication slot.
710 : : */
711 [ + + ]: 263 : if (opts.create_slot)
712 : 139 : PreventInTransactionBlock(isTopLevel, "CREATE SUBSCRIPTION ... WITH (create_slot = true)");
713 : :
714 : : /*
715 : : * We don't want to allow unprivileged users to be able to trigger
716 : : * attempts to access arbitrary network destinations, so require the user
717 : : * to have been specifically authorized to create subscriptions.
718 : : */
719 [ + + ]: 259 : if (!has_privs_of_role(owner, ROLE_PG_CREATE_SUBSCRIPTION))
720 [ + - ]: 4 : ereport(ERROR,
721 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
722 : : errmsg("permission denied to create subscription"),
723 : : errdetail("Only roles with privileges of the \"%s\" role may create subscriptions.",
724 : : "pg_create_subscription")));
725 : :
726 : : /*
727 : : * Since a subscription is a database object, we also check for CREATE
728 : : * permission on the database.
729 : : */
730 : 255 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
731 : : owner, ACL_CREATE);
732 [ + + ]: 255 : if (aclresult != ACLCHECK_OK)
733 : 8 : aclcheck_error(aclresult, OBJECT_DATABASE,
734 : 4 : get_database_name(MyDatabaseId));
735 : :
736 : : /*
737 : : * Non-superusers are required to set a password for authentication, and
738 : : * that password must be used by the target server, but the superuser can
739 : : * exempt a subscription from this requirement.
740 : : */
741 [ + + + + ]: 251 : if (!opts.passwordrequired && !superuser_arg(owner))
742 [ + - ]: 4 : ereport(ERROR,
743 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
744 : : errmsg("password_required=false is superuser-only"),
745 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
746 : :
747 : : /*
748 : : * If built with appropriate switch, whine when regression-testing
749 : : * conventions for subscription names are violated.
750 : : */
751 : : #ifdef ENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS
752 : : if (strncmp(stmt->subname, "regress_", 8) != 0)
753 : : elog(WARNING, "subscriptions created by regression test cases should have names starting with \"regress_\"");
754 : : #endif
755 : :
756 : 247 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
757 : :
758 : : /* Check if name is used */
759 : 247 : subid = GetSysCacheOid2(SUBSCRIPTIONNAME, Anum_pg_subscription_oid,
760 : : ObjectIdGetDatum(MyDatabaseId), CStringGetDatum(stmt->subname));
761 [ + + ]: 247 : if (OidIsValid(subid))
762 : : {
763 [ + - ]: 5 : ereport(ERROR,
764 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
765 : : errmsg("subscription \"%s\" already exists",
766 : : stmt->subname)));
767 : : }
768 : :
769 : : /*
770 : : * Ensure that system configuration parameters are set appropriately to
771 : : * support retain_dead_tuples and max_retention_duration.
772 : : */
773 : 242 : CheckSubDeadTupleRetention(true, !opts.enabled, WARNING,
774 : 242 : opts.retaindeadtuples, opts.retaindeadtuples,
775 : 242 : (opts.maxretention > 0));
776 : :
777 [ + + ]: 242 : if (!IsSet(opts.specified_opts, SUBOPT_SLOT_NAME) &&
778 [ + - ]: 199 : opts.slot_name == NULL)
779 : 199 : opts.slot_name = stmt->subname;
780 : :
781 : : /* The default for synchronous_commit of subscriptions is off. */
782 [ + - ]: 242 : if (opts.synchronous_commit == NULL)
783 : 242 : opts.synchronous_commit = "off";
784 : :
785 : : /*
786 : : * The default for wal_receiver_timeout of subscriptions is -1, which
787 : : * means the value is inherited from the server configuration, command
788 : : * line, or role/database settings.
789 : : */
790 [ + - ]: 242 : if (opts.wal_receiver_timeout == NULL)
791 : 242 : opts.wal_receiver_timeout = "-1";
792 : :
793 : : /* Load the library providing us libpq calls. */
794 : 242 : load_file("libpqwalreceiver", false);
795 : :
796 [ + + ]: 242 : if (stmt->servername)
797 : : {
798 : : ForeignServer *server;
799 : :
800 : : Assert(!stmt->conninfo);
801 : :
802 : 20 : server = GetForeignServerByName(stmt->servername, false);
803 : 20 : serverid = server->serverid;
804 : :
805 : : /* check USAGE privileges on server */
806 : 20 : aclresult = object_aclcheck(ForeignServerRelationId, serverid, owner, ACL_USAGE);
807 [ + + ]: 20 : if (aclresult != ACLCHECK_OK)
808 : 4 : aclcheck_error(aclresult, OBJECT_FOREIGN_SERVER, server->servername);
809 : :
810 : : /* check user mapping */
811 : 16 : GetUserMappingExtended(owner, server->serverid, WARNING);
812 : :
813 : : /*
814 : : * Check conninfo if connecting; otherwise only check that the
815 : : * server's FDW supports connections.
816 : : */
817 [ + + ]: 16 : if (opts.connect)
818 : : {
819 : 2 : conninfo = ForeignServerConnectionString(owner, server);
820 [ - + - - ]: 1 : walrcv_check_conninfo(conninfo, opts.passwordrequired && !superuser());
821 : : }
822 : : else
823 : : {
824 : 14 : ForeignDataWrapper *fdw = GetForeignDataWrapper(server->fdwid);
825 : :
826 [ + + ]: 14 : if (!OidIsValid(fdw->fdwconnection))
827 [ + - ]: 4 : ereport(ERROR,
828 : : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
829 : : errmsg("foreign-data wrapper \"%s\" does not support subscription connections",
830 : : fdw->fdwname),
831 : : errdetail("Foreign-data wrapper must be defined with CONNECTION specified.")));
832 : : }
833 : : }
834 : : else
835 : : {
836 : : Assert(stmt->conninfo);
837 : :
838 : 222 : conninfo = stmt->conninfo;
839 [ + + + + ]: 222 : walrcv_check_conninfo(conninfo, opts.passwordrequired && !superuser());
840 : : }
841 : :
842 : 221 : publications = stmt->publication;
843 : :
844 : : /* Everything ok, form a new tuple. */
845 : 221 : memset(values, 0, sizeof(values));
846 : 221 : memset(nulls, false, sizeof(nulls));
847 : :
848 : 221 : subid = GetNewOidWithIndex(rel, SubscriptionObjectIndexId,
849 : : Anum_pg_subscription_oid);
850 : 221 : values[Anum_pg_subscription_oid - 1] = ObjectIdGetDatum(subid);
851 : 221 : values[Anum_pg_subscription_subdbid - 1] = ObjectIdGetDatum(MyDatabaseId);
852 : 221 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(InvalidXLogRecPtr);
853 : 221 : values[Anum_pg_subscription_subname - 1] =
854 : 221 : DirectFunctionCall1(namein, CStringGetDatum(stmt->subname));
855 : 221 : values[Anum_pg_subscription_subowner - 1] = ObjectIdGetDatum(owner);
856 : 221 : values[Anum_pg_subscription_subenabled - 1] = BoolGetDatum(opts.enabled);
857 : 221 : values[Anum_pg_subscription_subbinary - 1] = BoolGetDatum(opts.binary);
858 : 221 : values[Anum_pg_subscription_substream - 1] = CharGetDatum(opts.streaming);
859 : 221 : values[Anum_pg_subscription_subtwophasestate - 1] =
860 [ + + ]: 221 : CharGetDatum(opts.twophase ?
861 : : LOGICALREP_TWOPHASE_STATE_PENDING :
862 : : LOGICALREP_TWOPHASE_STATE_DISABLED);
863 : 221 : values[Anum_pg_subscription_subdisableonerr - 1] = BoolGetDatum(opts.disableonerr);
864 : 221 : values[Anum_pg_subscription_subpasswordrequired - 1] = BoolGetDatum(opts.passwordrequired);
865 : 221 : values[Anum_pg_subscription_subrunasowner - 1] = BoolGetDatum(opts.runasowner);
866 : 221 : values[Anum_pg_subscription_subfailover - 1] = BoolGetDatum(opts.failover);
867 : 221 : values[Anum_pg_subscription_subretaindeadtuples - 1] =
868 : 221 : BoolGetDatum(opts.retaindeadtuples);
869 : 221 : values[Anum_pg_subscription_submaxretention - 1] =
870 : 221 : Int32GetDatum(opts.maxretention);
871 : 221 : values[Anum_pg_subscription_subretentionactive - 1] =
872 : 221 : BoolGetDatum(opts.retaindeadtuples);
873 : 221 : values[Anum_pg_subscription_subserver - 1] = ObjectIdGetDatum(serverid);
874 [ + + ]: 221 : if (!OidIsValid(serverid))
875 : 210 : values[Anum_pg_subscription_subconninfo - 1] =
876 : 210 : CStringGetTextDatum(conninfo);
877 : : else
878 : 11 : nulls[Anum_pg_subscription_subconninfo - 1] = true;
879 [ + + ]: 221 : if (opts.slot_name)
880 : 206 : values[Anum_pg_subscription_subslotname - 1] =
881 : 206 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
882 : : else
883 : 15 : nulls[Anum_pg_subscription_subslotname - 1] = true;
884 : 221 : values[Anum_pg_subscription_subsynccommit - 1] =
885 : 221 : CStringGetTextDatum(opts.synchronous_commit);
886 : 221 : values[Anum_pg_subscription_subwalrcvtimeout - 1] =
887 : 221 : CStringGetTextDatum(opts.wal_receiver_timeout);
888 : 217 : values[Anum_pg_subscription_subpublications - 1] =
889 : 221 : publicationListToArray(publications);
890 : 217 : values[Anum_pg_subscription_suborigin - 1] =
891 : 217 : CStringGetTextDatum(opts.origin);
892 : :
893 : 217 : values[Anum_pg_subscription_subconflictlogdest - 1] =
894 : 217 : CStringGetTextDatum(ConflictLogDestNames[opts.conflictlogdest]);
895 : :
896 : : /*
897 : : * We create the conflict log table here, if required, so that its
898 : : * relation OID can be stored when inserting the pg_subscription tuple
899 : : * below.
900 : : */
901 [ + + + + ]: 217 : if (CONFLICTS_LOGGED_TO_TABLE(opts.conflictlogdest))
902 : 10 : logrelid = create_conflict_log_table(subid, stmt->subname, owner);
903 : :
904 : : /* Store table OID in the catalog. */
905 : 217 : values[Anum_pg_subscription_subconflictlogrelid - 1] =
906 : 217 : ObjectIdGetDatum(logrelid);
907 : :
908 : 217 : tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
909 : :
910 : : /* Insert tuple into catalog. */
911 : 217 : CatalogTupleInsert(rel, tup);
912 : 217 : heap_freetuple(tup);
913 : :
914 : 217 : recordDependencyOnOwner(SubscriptionRelationId, subid, owner);
915 : :
916 : 217 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
917 : :
918 [ + + ]: 217 : if (stmt->servername)
919 : : {
920 : : ObjectAddress referenced;
921 : :
922 : : Assert(OidIsValid(serverid));
923 : :
924 : 11 : ObjectAddressSet(referenced, ForeignServerRelationId, serverid);
925 : 11 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
926 : : }
927 : :
928 : : /*
929 : : * Establish an internal dependency between the conflict log table and the
930 : : * subscription.
931 : : *
932 : : * We use DEPENDENCY_INTERNAL to signify that the table's lifecycle is
933 : : * strictly tied to the subscription, similar to how a TOAST table relates
934 : : * to its main table or a sequence relates to an identity column.
935 : : *
936 : : * This ensures the conflict log table is automatically reaped during a
937 : : * DROP SUBSCRIPTION via performDeletion().
938 : : */
939 [ + + ]: 217 : if (OidIsValid(logrelid))
940 : : {
941 : : ObjectAddress cltaddr;
942 : :
943 : 10 : ObjectAddressSet(cltaddr, RelationRelationId, logrelid);
944 : 10 : recordDependencyOn(&cltaddr, &myself, DEPENDENCY_INTERNAL);
945 : : }
946 : :
947 : : /*
948 : : * A replication origin is currently created for all subscriptions,
949 : : * including those that only contain sequences or are otherwise empty.
950 : : *
951 : : * XXX: While this is technically unnecessary, optimizing it would require
952 : : * additional logic to skip origin creation during DDL operations and
953 : : * apply workers initialization, and to handle origin creation dynamically
954 : : * when tables are added to the subscription. It is not clear whether
955 : : * preventing creation of origins is worth additional complexity.
956 : : */
957 : 217 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
958 : 217 : replorigin_create(originname);
959 : :
960 : : /*
961 : : * Connect to remote side to execute requested commands and fetch table
962 : : * and sequence info.
963 : : */
964 [ + + ]: 217 : if (opts.connect)
965 : : {
966 : : char *err;
967 : : WalReceiverConn *wrconn;
968 : : bool must_use_password;
969 : :
970 : : /* Try to connect to the publisher. */
971 [ - + - - ]: 130 : must_use_password = !superuser_arg(owner) && opts.passwordrequired;
972 : 130 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
973 : : stmt->subname, &err);
974 [ + + ]: 130 : if (!wrconn)
975 [ + - ]: 4 : ereport(ERROR,
976 : : (errcode(ERRCODE_CONNECTION_FAILURE),
977 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
978 : : stmt->subname, err)));
979 : :
980 [ + + ]: 126 : PG_TRY();
981 : : {
982 : 126 : bool has_tables = false;
983 : : List *pubrels;
984 : : char relation_state;
985 : :
986 : 126 : check_publications(wrconn, publications);
987 : 126 : check_publications_origin_tables(wrconn, publications,
988 : 126 : opts.copy_data,
989 : 126 : opts.retaindeadtuples, opts.origin,
990 : : NULL, 0, stmt->subname);
991 : 126 : check_publications_origin_sequences(wrconn, publications,
992 : 126 : opts.copy_data, opts.origin,
993 : : NULL, 0, stmt->subname);
994 : :
995 [ + + ]: 126 : if (opts.retaindeadtuples)
996 : 3 : CheckPubDeadTupleRetention(wrconn);
997 : :
998 : : /*
999 : : * Set sync state based on if we were asked to do data copy or
1000 : : * not.
1001 : : */
1002 [ + + ]: 126 : relation_state = opts.copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY;
1003 : :
1004 : : /*
1005 : : * Build local relation status info. Relations are for both tables
1006 : : * and sequences from the publisher.
1007 : : */
1008 : 126 : pubrels = fetch_relation_list(wrconn, publications);
1009 : :
1010 [ + + + + : 445 : foreach_ptr(PublicationRelKind, pubrelinfo, pubrels)
+ + ]
1011 : : {
1012 : : Oid relid;
1013 : : char relkind;
1014 : 195 : RangeVar *rv = pubrelinfo->rv;
1015 : :
1016 : 195 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
1017 : 195 : relkind = get_rel_relkind(relid);
1018 : :
1019 : : /* Check for supported relkind. */
1020 : 195 : CheckSubscriptionRelkind(relkind, pubrelinfo->relkind,
1021 : 195 : rv->schemaname, rv->relname);
1022 : 195 : has_tables |= (relkind != RELKIND_SEQUENCE);
1023 : 195 : AddSubscriptionRelState(subid, relid, relation_state,
1024 : : InvalidXLogRecPtr, true);
1025 : : }
1026 : :
1027 : : /*
1028 : : * If requested, create permanent slot for the subscription. We
1029 : : * won't use the initial snapshot for anything, so no need to
1030 : : * export it.
1031 : : *
1032 : : * XXX: Similar to origins, it is not clear whether preventing the
1033 : : * slot creation for empty and sequence-only subscriptions is
1034 : : * worth additional complexity.
1035 : : */
1036 [ + + ]: 125 : if (opts.create_slot)
1037 : : {
1038 : 120 : bool twophase_enabled = false;
1039 : :
1040 : : Assert(opts.slot_name);
1041 : :
1042 : : /*
1043 : : * Even if two_phase is set, don't create the slot with
1044 : : * two-phase enabled. Will enable it once all the tables are
1045 : : * synced and ready. This avoids race-conditions like prepared
1046 : : * transactions being skipped due to changes not being applied
1047 : : * due to checks in should_apply_changes_for_rel() when
1048 : : * tablesync for the corresponding tables are in progress. See
1049 : : * comments atop worker.c.
1050 : : *
1051 : : * Note that if tables were specified but copy_data is false
1052 : : * then it is safe to enable two_phase up-front because those
1053 : : * tables are already initially in READY state. When the
1054 : : * subscription has no tables, we leave the twophase state as
1055 : : * PENDING, to allow ALTER SUBSCRIPTION ... REFRESH
1056 : : * PUBLICATION to work.
1057 : : */
1058 [ + + + + : 120 : if (opts.twophase && !opts.copy_data && has_tables)
+ - ]
1059 : 1 : twophase_enabled = true;
1060 : :
1061 : 120 : walrcv_create_slot(wrconn, opts.slot_name, false, twophase_enabled,
1062 : : opts.failover, CRS_NOEXPORT_SNAPSHOT, NULL);
1063 : :
1064 [ + + ]: 120 : if (twophase_enabled)
1065 : 1 : UpdateTwoPhaseState(subid, LOGICALREP_TWOPHASE_STATE_ENABLED);
1066 : :
1067 [ + - ]: 120 : ereport(NOTICE,
1068 : : (errmsg("created replication slot \"%s\" on publisher",
1069 : : opts.slot_name)));
1070 : : }
1071 : : }
1072 : 1 : PG_FINALLY();
1073 : : {
1074 : 126 : walrcv_disconnect(wrconn);
1075 : : }
1076 [ + + ]: 126 : PG_END_TRY();
1077 : : }
1078 : : else
1079 [ + - ]: 87 : ereport(WARNING,
1080 : : (errmsg("subscription was created, but is not connected"),
1081 : : errhint("To initiate replication, you must manually create the replication slot, enable the subscription, and alter the subscription to refresh publications.")));
1082 : :
1083 : 212 : table_close(rel, RowExclusiveLock);
1084 : :
1085 : 212 : pgstat_create_subscription(subid);
1086 : :
1087 : : /*
1088 : : * Notify the launcher to start the apply worker if the subscription is
1089 : : * enabled, or to create the conflict detection slot if retain_dead_tuples
1090 : : * is enabled.
1091 : : *
1092 : : * Creating the conflict detection slot is essential even when the
1093 : : * subscription is not enabled. This ensures that dead tuples are
1094 : : * retained, which is necessary for accurately identifying the type of
1095 : : * conflict during replication.
1096 : : */
1097 [ + + + + ]: 212 : if (opts.enabled || opts.retaindeadtuples)
1098 : 119 : ApplyLauncherWakeupAtCommit();
1099 : :
1100 [ - + ]: 212 : InvokeObjectPostCreateHook(SubscriptionRelationId, subid, 0);
1101 : :
1102 : 212 : return myself;
1103 : : }
1104 : :
1105 : : static void
1106 : 39 : AlterSubscription_refresh(Subscription *sub, bool copy_data,
1107 : : List *validate_publications, char *conninfo)
1108 : : {
1109 : : char *err;
1110 : 39 : List *pubrels = NIL;
1111 : : Oid *pubrel_local_oids;
1112 : : List *subrel_states;
1113 : 39 : List *sub_remove_rels = NIL;
1114 : : Oid *subrel_local_oids;
1115 : : Oid *subseq_local_oids;
1116 : : int subrel_count;
1117 : : ListCell *lc;
1118 : : int off;
1119 : 39 : int tbl_count = 0;
1120 : 39 : int seq_count = 0;
1121 : 39 : Relation rel = NULL;
1122 : : typedef struct SubRemoveRels
1123 : : {
1124 : : Oid relid;
1125 : : char state;
1126 : : } SubRemoveRels;
1127 : :
1128 : : WalReceiverConn *wrconn;
1129 : : bool must_use_password;
1130 : :
1131 : : /*
1132 : : * Should not happen: CREATE/ALTER/DROP SUBSCRIPTION did not call
1133 : : * SubscriptionConninfo() in a path where it's required.
1134 : : */
1135 [ - + ]: 39 : if (!conninfo)
1136 [ # # ]: 0 : elog(ERROR, "no connection string provided for subscription");
1137 : :
1138 : : /* Load the library providing us libpq calls. */
1139 : 39 : load_file("libpqwalreceiver", false);
1140 : :
1141 : : /* Try to connect to the publisher. */
1142 [ + - + + ]: 39 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
1143 : 39 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
1144 : : sub->name, &err);
1145 [ - + ]: 38 : if (!wrconn)
1146 [ # # ]: 0 : ereport(ERROR,
1147 : : (errcode(ERRCODE_CONNECTION_FAILURE),
1148 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
1149 : : sub->name, err)));
1150 : :
1151 [ + - ]: 38 : PG_TRY();
1152 : : {
1153 [ + + ]: 38 : if (validate_publications)
1154 : 9 : check_publications(wrconn, validate_publications);
1155 : :
1156 : : /* Get the relation list from publisher. */
1157 : 38 : pubrels = fetch_relation_list(wrconn, sub->publications);
1158 : :
1159 : : /* Get local relation list. */
1160 : 38 : subrel_states = GetSubscriptionRelations(sub->oid, true, true, false);
1161 : 38 : subrel_count = list_length(subrel_states);
1162 : :
1163 : : /*
1164 : : * Build qsorted arrays of local table oids and sequence oids for
1165 : : * faster lookup. This can potentially contain all tables and
1166 : : * sequences in the database so speed of lookup is important.
1167 : : *
1168 : : * We do not yet know the exact count of tables and sequences, so we
1169 : : * allocate separate arrays for table OIDs and sequence OIDs based on
1170 : : * the total number of relations (subrel_count).
1171 : : */
1172 : 38 : subrel_local_oids = palloc(subrel_count * sizeof(Oid));
1173 : 38 : subseq_local_oids = palloc(subrel_count * sizeof(Oid));
1174 [ + + + + : 136 : foreach(lc, subrel_states)
+ + ]
1175 : : {
1176 : 98 : SubscriptionRelState *relstate = (SubscriptionRelState *) lfirst(lc);
1177 : :
1178 [ + + ]: 98 : if (get_rel_relkind(relstate->relid) == RELKIND_SEQUENCE)
1179 : 9 : subseq_local_oids[seq_count++] = relstate->relid;
1180 : : else
1181 : 89 : subrel_local_oids[tbl_count++] = relstate->relid;
1182 : : }
1183 : :
1184 : 38 : qsort(subrel_local_oids, tbl_count, sizeof(Oid), oid_cmp);
1185 : 38 : check_publications_origin_tables(wrconn, sub->publications, copy_data,
1186 : 38 : sub->retaindeadtuples, sub->origin,
1187 : : subrel_local_oids, tbl_count,
1188 : : sub->name);
1189 : :
1190 : 38 : qsort(subseq_local_oids, seq_count, sizeof(Oid), oid_cmp);
1191 : 38 : check_publications_origin_sequences(wrconn, sub->publications,
1192 : : copy_data, sub->origin,
1193 : : subseq_local_oids, seq_count,
1194 : : sub->name);
1195 : :
1196 : : /*
1197 : : * Walk over the remote relations and try to match them to locally
1198 : : * known relations. If the relation is not known locally create a new
1199 : : * state for it.
1200 : : *
1201 : : * Also builds array of local oids of remote relations for the next
1202 : : * step.
1203 : : */
1204 : 38 : off = 0;
1205 : 38 : pubrel_local_oids = palloc(list_length(pubrels) * sizeof(Oid));
1206 : :
1207 [ + + + + : 183 : foreach_ptr(PublicationRelKind, pubrelinfo, pubrels)
+ + ]
1208 : : {
1209 : 107 : RangeVar *rv = pubrelinfo->rv;
1210 : : Oid relid;
1211 : : char relkind;
1212 : :
1213 : 107 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
1214 : 107 : relkind = get_rel_relkind(relid);
1215 : :
1216 : : /* Check for supported relkind. */
1217 : 107 : CheckSubscriptionRelkind(relkind, pubrelinfo->relkind,
1218 : 107 : rv->schemaname, rv->relname);
1219 : :
1220 : 107 : pubrel_local_oids[off++] = relid;
1221 : :
1222 [ + + ]: 107 : if (!bsearch(&relid, subrel_local_oids,
1223 : 39 : tbl_count, sizeof(Oid), oid_cmp) &&
1224 [ + + ]: 39 : !bsearch(&relid, subseq_local_oids,
1225 : : seq_count, sizeof(Oid), oid_cmp))
1226 : : {
1227 [ + + ]: 30 : AddSubscriptionRelState(sub->oid, relid,
1228 : : copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY,
1229 : : InvalidXLogRecPtr, true);
1230 [ + + - + ]: 30 : ereport(DEBUG1,
1231 : : errmsg_internal("%s \"%s.%s\" added to subscription \"%s\"",
1232 : : relkind == RELKIND_SEQUENCE ? "sequence" : "table",
1233 : : rv->schemaname, rv->relname, sub->name));
1234 : : }
1235 : : }
1236 : :
1237 : : /*
1238 : : * Next remove state for tables we should not care about anymore using
1239 : : * the data we collected above
1240 : : */
1241 : 38 : qsort(pubrel_local_oids, list_length(pubrels), sizeof(Oid), oid_cmp);
1242 : :
1243 [ + + ]: 127 : for (off = 0; off < tbl_count; off++)
1244 : : {
1245 : 89 : Oid relid = subrel_local_oids[off];
1246 : :
1247 [ + + ]: 89 : if (!bsearch(&relid, pubrel_local_oids,
1248 : 89 : list_length(pubrels), sizeof(Oid), oid_cmp))
1249 : : {
1250 : : char state;
1251 : : XLogRecPtr statelsn;
1252 : 21 : SubRemoveRels *remove_rel = palloc_object(SubRemoveRels);
1253 : :
1254 : : /*
1255 : : * Lock pg_subscription_rel with AccessExclusiveLock to
1256 : : * prevent any race conditions with the apply worker
1257 : : * re-launching workers at the same time this code is trying
1258 : : * to remove those tables.
1259 : : *
1260 : : * Even if new worker for this particular rel is restarted it
1261 : : * won't be able to make any progress as we hold exclusive
1262 : : * lock on pg_subscription_rel till the transaction end. It
1263 : : * will simply exit as there is no corresponding rel entry.
1264 : : *
1265 : : * This locking also ensures that the state of rels won't
1266 : : * change till we are done with this refresh operation.
1267 : : */
1268 [ + + ]: 21 : if (!rel)
1269 : 9 : rel = table_open(SubscriptionRelRelationId, AccessExclusiveLock);
1270 : :
1271 : : /* Last known rel state. */
1272 : 21 : state = GetSubscriptionRelState(sub->oid, relid, &statelsn);
1273 : :
1274 : 21 : RemoveSubscriptionRel(sub->oid, relid);
1275 : :
1276 : 21 : remove_rel->relid = relid;
1277 : 21 : remove_rel->state = state;
1278 : :
1279 : 21 : sub_remove_rels = lappend(sub_remove_rels, remove_rel);
1280 : :
1281 : 21 : logicalrep_worker_stop(WORKERTYPE_TABLESYNC, sub->oid, relid);
1282 : :
1283 : : /*
1284 : : * For READY state, we would have already dropped the
1285 : : * tablesync origin.
1286 : : */
1287 [ - + ]: 21 : if (state != SUBREL_STATE_READY)
1288 : : {
1289 : : char originname[NAMEDATALEN];
1290 : :
1291 : : /*
1292 : : * Drop the tablesync's origin tracking if exists.
1293 : : *
1294 : : * It is possible that the origin is not yet created for
1295 : : * tablesync worker, this can happen for the states before
1296 : : * SUBREL_STATE_DATASYNC. The tablesync worker or apply
1297 : : * worker can also concurrently try to drop the origin and
1298 : : * by this time the origin might be already removed. For
1299 : : * these reasons, passing missing_ok = true.
1300 : : */
1301 : 0 : ReplicationOriginNameForLogicalRep(sub->oid, relid, originname,
1302 : : sizeof(originname));
1303 : 0 : replorigin_drop_by_name(originname, true, false);
1304 : : }
1305 : :
1306 [ + + ]: 21 : ereport(DEBUG1,
1307 : : (errmsg_internal("table \"%s.%s\" removed from subscription \"%s\"",
1308 : : get_namespace_name(get_rel_namespace(relid)),
1309 : : get_rel_name(relid),
1310 : : sub->name)));
1311 : : }
1312 : : }
1313 : :
1314 : : /*
1315 : : * Next remove state for sequences we should not care about anymore
1316 : : * using the data we collected above
1317 : : */
1318 [ + + ]: 47 : for (off = 0; off < seq_count; off++)
1319 : : {
1320 : 9 : Oid relid = subseq_local_oids[off];
1321 : :
1322 [ - + ]: 9 : if (!bsearch(&relid, pubrel_local_oids,
1323 : 9 : list_length(pubrels), sizeof(Oid), oid_cmp))
1324 : : {
1325 : : /*
1326 : : * This locking ensures that the state of rels won't change
1327 : : * till we are done with this refresh operation.
1328 : : */
1329 [ # # ]: 0 : if (!rel)
1330 : 0 : rel = table_open(SubscriptionRelRelationId, AccessExclusiveLock);
1331 : :
1332 : 0 : RemoveSubscriptionRel(sub->oid, relid);
1333 : :
1334 [ # # ]: 0 : ereport(DEBUG1,
1335 : : errmsg_internal("sequence \"%s.%s\" removed from subscription \"%s\"",
1336 : : get_namespace_name(get_rel_namespace(relid)),
1337 : : get_rel_name(relid),
1338 : : sub->name));
1339 : : }
1340 : : }
1341 : :
1342 : : /*
1343 : : * Drop the tablesync slots associated with removed tables. This has
1344 : : * to be at the end because otherwise if there is an error while doing
1345 : : * the database operations we won't be able to rollback dropped slots.
1346 : : */
1347 [ + + + + : 97 : foreach_ptr(SubRemoveRels, sub_remove_rel, sub_remove_rels)
+ + ]
1348 : : {
1349 [ - + ]: 21 : if (sub_remove_rel->state != SUBREL_STATE_READY &&
1350 [ # # ]: 0 : sub_remove_rel->state != SUBREL_STATE_SYNCDONE)
1351 : : {
1352 : 0 : char syncslotname[NAMEDATALEN] = {0};
1353 : :
1354 : : /*
1355 : : * For READY/SYNCDONE states we know the tablesync slot has
1356 : : * already been dropped by the tablesync worker.
1357 : : *
1358 : : * For other states, there is no certainty, maybe the slot
1359 : : * does not exist yet. Also, if we fail after removing some of
1360 : : * the slots, next time, it will again try to drop already
1361 : : * dropped slots and fail. For these reasons, we allow
1362 : : * missing_ok = true for the drop.
1363 : : */
1364 : 0 : ReplicationSlotNameForTablesync(sub->oid, sub_remove_rel->relid,
1365 : : syncslotname, sizeof(syncslotname));
1366 : 0 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
1367 : : }
1368 : : }
1369 : : }
1370 : 0 : PG_FINALLY();
1371 : : {
1372 : 38 : walrcv_disconnect(wrconn);
1373 : : }
1374 [ - + ]: 38 : PG_END_TRY();
1375 : :
1376 [ + + ]: 38 : if (rel)
1377 : 9 : table_close(rel, NoLock);
1378 : 38 : }
1379 : :
1380 : : /*
1381 : : * Marks all sequences with INIT state.
1382 : : */
1383 : : static void
1384 : 5 : AlterSubscription_refresh_seq(Subscription *sub, char *conninfo)
1385 : : {
1386 : 5 : char *err = NULL;
1387 : : WalReceiverConn *wrconn;
1388 : : bool must_use_password;
1389 : : List *subrel_states;
1390 : :
1391 : : /*
1392 : : * Should not happen: CREATE/ALTER/DROP SUBSCRIPTION did not call
1393 : : * SubscriptionConninfo() in a path where it's required.
1394 : : */
1395 [ - + ]: 5 : if (!conninfo)
1396 [ # # ]: 0 : elog(ERROR, "no connection string provided for subscription");
1397 : :
1398 : : /* Load the library providing us libpq calls. */
1399 : 5 : load_file("libpqwalreceiver", false);
1400 : :
1401 : : /* Try to connect to the publisher. */
1402 [ + - - + ]: 5 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
1403 : 5 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
1404 : : sub->name, &err);
1405 [ - + ]: 5 : if (!wrconn)
1406 [ # # ]: 0 : ereport(ERROR,
1407 : : errcode(ERRCODE_CONNECTION_FAILURE),
1408 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
1409 : : sub->name, err));
1410 : :
1411 : : /* The publisher connection is only needed for the origin check. */
1412 [ + - ]: 5 : PG_TRY();
1413 : : {
1414 : : /*
1415 : : * Sequence synchronization depends on publisher-side functionality
1416 : : * introduced in PostgreSQL 19, so it cannot work against an older
1417 : : * publisher.
1418 : : */
1419 [ - + ]: 5 : if (walrcv_server_version(wrconn) < 190000)
1420 [ # # ]: 0 : ereport(ERROR,
1421 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1422 : : errmsg("cannot synchronize sequences if the publisher is running a version earlier than PostgreSQL 19"));
1423 : :
1424 : 5 : check_publications_origin_sequences(wrconn, sub->publications, true,
1425 : : sub->origin, NULL, 0, sub->name);
1426 : : }
1427 : 0 : PG_FINALLY();
1428 : : {
1429 : 5 : walrcv_disconnect(wrconn);
1430 : : }
1431 [ - + ]: 5 : PG_END_TRY();
1432 : :
1433 : : /*
1434 : : * Reset the sequences to INIT so they get re-synchronized with the latest
1435 : : * publisher values.
1436 : : *
1437 : : * A sequence sync worker may already be running. If it has fetched a
1438 : : * sequence's value from the publisher but not yet marked it READY, it
1439 : : * must not be allowed to complete that update, as it would overwrite the
1440 : : * reset below with a stale value and silently lose this refresh request.
1441 : : * So we stop any running sequence sync worker before resetting the
1442 : : * states.
1443 : : *
1444 : : * This is race-free because AlterSubscription() already holds
1445 : : * AccessExclusiveLock on the subscription object. That lock blocks a
1446 : : * running worker's update of sequence state to READY, see
1447 : : * UpdateSubscriptionRelState() which takes AccessShareLock on the object.
1448 : : * It also blocks any worker the apply worker re-launches, because a new
1449 : : * worker takes AccessShareLock on the object before it reads
1450 : : * pg_subscription_rel, see InitializeLogRepWorker(). Such a worker cannot
1451 : : * act on the states until we commit, by which time they are reset to INIT
1452 : : * and it will sync the latest values.
1453 : : */
1454 : : #ifdef USE_ASSERT_CHECKING
1455 : : {
1456 : : LOCKTAG tag;
1457 : :
1458 : : SET_LOCKTAG_OBJECT(tag, InvalidOid, SubscriptionRelationId, sub->oid, 0);
1459 : : Assert(LockHeldByMe(&tag, AccessExclusiveLock, true));
1460 : : }
1461 : : #endif
1462 : :
1463 : 5 : logicalrep_worker_stop(WORKERTYPE_SEQUENCESYNC, sub->oid, InvalidOid);
1464 : :
1465 : : /* Reset every local sequence of this subscription to INIT. */
1466 : 5 : subrel_states = GetSubscriptionRelations(sub->oid, false, true, false);
1467 [ + - + + : 31 : foreach_ptr(SubscriptionRelState, subrel, subrel_states)
+ + ]
1468 : : {
1469 : 21 : Oid relid = subrel->relid;
1470 : :
1471 : 21 : UpdateSubscriptionRelState(sub->oid, relid, SUBREL_STATE_INIT,
1472 : : InvalidXLogRecPtr, false);
1473 [ - + ]: 21 : ereport(DEBUG1,
1474 : : errmsg_internal("sequence \"%s.%s\" of subscription \"%s\" set to INIT state",
1475 : : get_namespace_name(get_rel_namespace(relid)),
1476 : : get_rel_name(relid),
1477 : : sub->name));
1478 : : }
1479 : 5 : }
1480 : :
1481 : : /*
1482 : : * Common checks for altering failover, two_phase, and retain_dead_tuples
1483 : : * options.
1484 : : */
1485 : : static void
1486 : 14 : CheckAlterSubOption(Subscription *sub, const char *option,
1487 : : bool slot_needs_update, bool isTopLevel)
1488 : : {
1489 : : Assert(strcmp(option, "failover") == 0 ||
1490 : : strcmp(option, "two_phase") == 0 ||
1491 : : strcmp(option, "retain_dead_tuples") == 0);
1492 : :
1493 : : /*
1494 : : * Altering the retain_dead_tuples option does not update the slot on the
1495 : : * publisher.
1496 : : */
1497 : : Assert(!slot_needs_update || strcmp(option, "retain_dead_tuples") != 0);
1498 : :
1499 : : /*
1500 : : * Do not allow changing the option if the subscription is enabled. This
1501 : : * is because both failover and two_phase options of the slot on the
1502 : : * publisher cannot be modified if the slot is currently acquired by the
1503 : : * existing walsender.
1504 : : *
1505 : : * Note that two_phase is enabled (aka changed from 'false' to 'true') on
1506 : : * the publisher by the existing walsender, so we could have allowed that
1507 : : * even when the subscription is enabled. But we kept this restriction for
1508 : : * the sake of consistency and simplicity.
1509 : : *
1510 : : * Additionally, do not allow changing the retain_dead_tuples option when
1511 : : * the subscription is enabled to prevent race conditions arising from the
1512 : : * new option value being acknowledged asynchronously by the launcher and
1513 : : * apply workers.
1514 : : *
1515 : : * Without the restriction, a race condition may arise when a user
1516 : : * disables and immediately re-enables the retain_dead_tuples option. In
1517 : : * this case, the launcher might drop the slot upon noticing the disabled
1518 : : * action, while the apply worker may keep maintaining
1519 : : * oldest_nonremovable_xid without noticing the option change. During this
1520 : : * period, a transaction ID wraparound could falsely make this ID appear
1521 : : * as if it originates from the future w.r.t the transaction ID stored in
1522 : : * the slot maintained by launcher.
1523 : : *
1524 : : * Similarly, if the user enables retain_dead_tuples concurrently with the
1525 : : * launcher starting the worker, the apply worker may start calculating
1526 : : * oldest_nonremovable_xid before the launcher notices the enable action.
1527 : : * Consequently, the launcher may update slot.xmin to a newer value than
1528 : : * that maintained by the worker. In subsequent cycles, upon integrating
1529 : : * the worker's oldest_nonremovable_xid, the launcher might detect a
1530 : : * retreat in the calculated xmin, necessitating additional handling.
1531 : : *
1532 : : * XXX To address the above race conditions, we can define
1533 : : * oldest_nonremovable_xid as FullTransactionId and adds the check to
1534 : : * disallow retreating the conflict slot's xmin. For now, we kept the
1535 : : * implementation simple by disallowing change to the retain_dead_tuples,
1536 : : * but in the future we can change this after some more analysis.
1537 : : *
1538 : : * Note that we could restrict only the enabling of retain_dead_tuples to
1539 : : * avoid the race conditions described above, but we maintain the
1540 : : * restriction for both enable and disable operations for the sake of
1541 : : * consistency.
1542 : : */
1543 [ + + ]: 14 : if (sub->enabled)
1544 [ + - ]: 2 : ereport(ERROR,
1545 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1546 : : errmsg("cannot set option \"%s\" for enabled subscription",
1547 : : option)));
1548 : :
1549 [ + + ]: 12 : if (slot_needs_update)
1550 : : {
1551 : : StringInfoData cmd;
1552 : :
1553 : : /*
1554 : : * A valid slot must be associated with the subscription for us to
1555 : : * modify any of the slot's properties.
1556 : : */
1557 [ - + ]: 9 : if (!sub->slotname)
1558 [ # # ]: 0 : ereport(ERROR,
1559 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1560 : : errmsg("cannot set option \"%s\" for a subscription that does not have a slot name",
1561 : : option)));
1562 : :
1563 : : /* The changed option of the slot can't be rolled back. */
1564 : 9 : initStringInfo(&cmd);
1565 : 9 : appendStringInfo(&cmd, "ALTER SUBSCRIPTION ... SET (%s)", option);
1566 : :
1567 : 9 : PreventInTransactionBlock(isTopLevel, cmd.data);
1568 : 5 : pfree(cmd.data);
1569 : : }
1570 : 8 : }
1571 : :
1572 : : /*
1573 : : * alter_sub_conflict_log_dest
1574 : : *
1575 : : * When the subscription's 'conflict_log_destination' is changed, update the
1576 : : * conflict log table if required.
1577 : : *
1578 : : * If the new destination no longer requires a conflict log table, the existing
1579 : : * conflict log table associated with the subscription is removed via internal
1580 : : * dependency cleanup to prevent orphaned relations.
1581 : : *
1582 : : * On success, *conflicttablerelid is set to the OID of the conflict log table
1583 : : * that was created or validated, or to InvalidOid if no table is required.
1584 : : *
1585 : : * Returns true if the subscription's conflict log table reference must be
1586 : : * updated as a result of the destination change; false otherwise.
1587 : : */
1588 : : static bool
1589 : 12 : alter_sub_conflict_log_dest(Subscription *sub, ConflictLogDest oldlogdest,
1590 : : ConflictLogDest newlogdest,
1591 : : Oid *conflicttablerelid)
1592 : : {
1593 : : bool want_table;
1594 : : bool has_oldtable;
1595 : 12 : bool update_relid = false;
1596 : 12 : Oid relid = InvalidOid;
1597 : :
1598 [ + + + + ]: 12 : want_table = CONFLICTS_LOGGED_TO_TABLE(newlogdest);
1599 [ + + + + ]: 12 : has_oldtable = CONFLICTS_LOGGED_TO_TABLE(oldlogdest);
1600 : :
1601 [ + + ]: 12 : if (has_oldtable)
1602 : : {
1603 : : /* There is a conflict log table already. */
1604 [ + + ]: 8 : if (!want_table)
1605 : : {
1606 : 4 : drop_sub_conflict_log_table(sub->oid, sub->name,
1607 : : sub->conflictlogrelid);
1608 : 4 : update_relid = true;
1609 : : }
1610 : : }
1611 : : else
1612 : : {
1613 : : /* There was no previous conflict log table. */
1614 [ + - ]: 4 : if (want_table)
1615 : : {
1616 : : ObjectAddress cltaddr;
1617 : : ObjectAddress subobj;
1618 : :
1619 : 4 : relid = create_conflict_log_table(sub->oid, sub->name, sub->owner);
1620 : 4 : update_relid = true;
1621 : :
1622 : : /*
1623 : : * Establish an internal dependency between the conflict log table
1624 : : * and the subscription. For details refer comments in
1625 : : * CreateSubscription function.
1626 : : */
1627 : 4 : ObjectAddressSet(cltaddr, RelationRelationId, relid);
1628 : 4 : ObjectAddressSet(subobj, SubscriptionRelationId, sub->oid);
1629 : 4 : recordDependencyOn(&cltaddr, &subobj, DEPENDENCY_INTERNAL);
1630 : : }
1631 : : }
1632 : :
1633 : 12 : *conflicttablerelid = relid;
1634 : 12 : return update_relid;
1635 : : }
1636 : :
1637 : : /*
1638 : : * Alter the existing subscription.
1639 : : */
1640 : : ObjectAddress
1641 : 442 : AlterSubscription(ParseState *pstate, AlterSubscriptionStmt *stmt,
1642 : : bool isTopLevel)
1643 : : {
1644 : : Relation rel;
1645 : : ObjectAddress myself;
1646 : : bool nulls[Natts_pg_subscription];
1647 : : bool replaces[Natts_pg_subscription];
1648 : : Datum values[Natts_pg_subscription];
1649 : : HeapTuple tup;
1650 : : Oid subid;
1651 : 442 : bool orig_conninfo_needed = false;
1652 : 442 : bool update_tuple = false;
1653 : 442 : bool update_failover = false;
1654 : 442 : bool update_two_phase = false;
1655 : 442 : bool check_pub_rdt = false;
1656 : : bool retain_dead_tuples;
1657 : : int max_retention;
1658 : : bool retention_active;
1659 : 442 : char *new_conninfo = NULL;
1660 : 442 : char *orig_conninfo = NULL;
1661 : : char *origin;
1662 : : Subscription *sub;
1663 : : Form_pg_subscription form;
1664 : : uint32 supported_opts;
1665 : 442 : SubOpts opts = {0};
1666 : :
1667 : 442 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
1668 : :
1669 : : /* Fetch the existing tuple. */
1670 : 442 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
1671 : : CStringGetDatum(stmt->subname));
1672 : :
1673 [ + + ]: 442 : if (!HeapTupleIsValid(tup))
1674 [ + - ]: 4 : ereport(ERROR,
1675 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
1676 : : errmsg("subscription \"%s\" does not exist",
1677 : : stmt->subname)));
1678 : :
1679 : 438 : form = (Form_pg_subscription) GETSTRUCT(tup);
1680 : 438 : subid = form->oid;
1681 : :
1682 : : /* must be owner */
1683 [ - + ]: 438 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
1684 : 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
1685 : 0 : stmt->subname);
1686 : :
1687 : : /* parse and check options */
1688 [ + + + + : 438 : switch (stmt->kind)
+ + + ]
1689 : : {
1690 : 209 : case ALTER_SUBSCRIPTION_OPTIONS:
1691 : 209 : supported_opts = (SUBOPT_SLOT_NAME |
1692 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
1693 : : SUBOPT_STREAMING | SUBOPT_TWOPHASE_COMMIT |
1694 : : SUBOPT_DISABLE_ON_ERR |
1695 : : SUBOPT_PASSWORD_REQUIRED |
1696 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER |
1697 : : SUBOPT_RETAIN_DEAD_TUPLES |
1698 : : SUBOPT_MAX_RETENTION_DURATION |
1699 : : SUBOPT_WAL_RECEIVER_TIMEOUT |
1700 : : SUBOPT_ORIGIN |
1701 : : SUBOPT_CONFLICT_LOG_DEST);
1702 : 209 : break;
1703 : :
1704 : 87 : case ALTER_SUBSCRIPTION_ENABLED:
1705 : 87 : supported_opts = SUBOPT_ENABLED;
1706 : 87 : break;
1707 : :
1708 : 23 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
1709 : 23 : supported_opts = SUBOPT_COPY_DATA | SUBOPT_REFRESH;
1710 : 23 : break;
1711 : :
1712 : 35 : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
1713 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
1714 : 35 : supported_opts = SUBOPT_REFRESH | SUBOPT_COPY_DATA;
1715 : 35 : break;
1716 : :
1717 : 41 : case ALTER_SUBSCRIPTION_REFRESH_PUBLICATION:
1718 : 41 : supported_opts = SUBOPT_COPY_DATA;
1719 : 41 : break;
1720 : :
1721 : 15 : case ALTER_SUBSCRIPTION_SKIP:
1722 : 15 : supported_opts = SUBOPT_LSN;
1723 : 15 : break;
1724 : :
1725 : 28 : default:
1726 : 28 : supported_opts = 0;
1727 : 28 : break;
1728 : : }
1729 : :
1730 [ + + ]: 438 : if (supported_opts > 0)
1731 : 410 : parse_subscription_options(pstate, stmt->options, supported_opts, &opts);
1732 : :
1733 : 414 : sub = GetSubscription(subid, false);
1734 : :
1735 : : /*
1736 : : * Determine in advance whether we need the original conninfo or not, so
1737 : : * that errors are generated consistently in cases where we do need it;
1738 : : * and not generated at all if we don't.
1739 : : */
1740 : :
1741 : : /* conninfo needed when refreshing */
1742 [ + + + + ]: 414 : switch (stmt->kind)
1743 : : {
1744 : 46 : case ALTER_SUBSCRIPTION_REFRESH_PUBLICATION:
1745 : : case ALTER_SUBSCRIPTION_REFRESH_SEQUENCES:
1746 : 46 : orig_conninfo_needed = true;
1747 : 46 : break;
1748 : :
1749 : 58 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
1750 : : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
1751 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
1752 : : /* opts.refresh defaults to true when the option is supported */
1753 : 58 : orig_conninfo_needed = opts.refresh;
1754 : 58 : break;
1755 : :
1756 : 189 : case ALTER_SUBSCRIPTION_OPTIONS:
1757 : : {
1758 [ + + ]: 189 : if (sub->slotname)
1759 : : {
1760 [ + + ]: 185 : if (IsSet(opts.specified_opts, SUBOPT_FAILOVER))
1761 : 9 : orig_conninfo_needed = true;
1762 [ + + ]: 185 : if (IsSet(opts.specified_opts, SUBOPT_TWOPHASE_COMMIT) &&
1763 [ + + ]: 3 : !opts.twophase)
1764 : 1 : orig_conninfo_needed = true;
1765 : : }
1766 : :
1767 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES) &&
1768 [ + - ]: 2 : opts.retaindeadtuples)
1769 : 2 : orig_conninfo_needed = true;
1770 : :
1771 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_ORIGIN))
1772 : : {
1773 : : bool rdt;
1774 : :
1775 : 12 : rdt = IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES) ?
1776 [ - + ]: 6 : opts.retaindeadtuples : sub->retaindeadtuples;
1777 : :
1778 [ + + + + ]: 6 : if (rdt && pg_strcasecmp(opts.origin, LOGICALREP_ORIGIN_ANY) == 0)
1779 : 1 : orig_conninfo_needed = true;
1780 : : }
1781 : : }
1782 : 189 : break;
1783 : :
1784 : 121 : default:
1785 : 121 : break;
1786 : : }
1787 : :
1788 [ + + ]: 414 : if (orig_conninfo_needed)
1789 : 77 : orig_conninfo = SubscriptionConninfo(sub);
1790 : :
1791 : 410 : retain_dead_tuples = sub->retaindeadtuples;
1792 : 410 : origin = sub->origin;
1793 : 410 : max_retention = sub->maxretention;
1794 : 410 : retention_active = sub->retentionactive;
1795 : :
1796 : : /*
1797 : : * Don't allow non-superuser modification of a subscription with
1798 : : * password_required=false.
1799 : : */
1800 [ + + - + ]: 410 : if (!sub->passwordrequired && !superuser())
1801 [ # # ]: 0 : ereport(ERROR,
1802 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1803 : : errmsg("password_required=false is superuser-only"),
1804 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1805 : :
1806 : : /* Lock the subscription so nobody else can do anything with it. */
1807 : 410 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
1808 : :
1809 : : /* Form a new tuple. */
1810 : 410 : memset(values, 0, sizeof(values));
1811 : 410 : memset(nulls, false, sizeof(nulls));
1812 : 410 : memset(replaces, false, sizeof(replaces));
1813 : :
1814 : 410 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
1815 : :
1816 [ + + + + : 410 : switch (stmt->kind)
+ + + + +
- ]
1817 : : {
1818 : 189 : case ALTER_SUBSCRIPTION_OPTIONS:
1819 : : {
1820 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_SLOT_NAME))
1821 : : {
1822 : : /*
1823 : : * The subscription must be disabled to allow slot_name as
1824 : : * 'none', otherwise, the apply worker will repeatedly try
1825 : : * to stream the data using that slot_name which neither
1826 : : * exists on the publisher nor the user will be allowed to
1827 : : * create it.
1828 : : */
1829 [ - + - - ]: 72 : if (sub->enabled && !opts.slot_name)
1830 [ # # ]: 0 : ereport(ERROR,
1831 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1832 : : errmsg("cannot set %s for enabled subscription",
1833 : : "slot_name = NONE")));
1834 : :
1835 [ + + ]: 72 : if (opts.slot_name)
1836 : 4 : values[Anum_pg_subscription_subslotname - 1] =
1837 : 4 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
1838 : : else
1839 : 68 : nulls[Anum_pg_subscription_subslotname - 1] = true;
1840 : 72 : replaces[Anum_pg_subscription_subslotname - 1] = true;
1841 : : }
1842 : :
1843 [ + + ]: 189 : if (opts.synchronous_commit)
1844 : : {
1845 : 12 : values[Anum_pg_subscription_subsynccommit - 1] =
1846 : 12 : CStringGetTextDatum(opts.synchronous_commit);
1847 : 12 : replaces[Anum_pg_subscription_subsynccommit - 1] = true;
1848 : : }
1849 : :
1850 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_BINARY))
1851 : : {
1852 : 10 : values[Anum_pg_subscription_subbinary - 1] =
1853 : 10 : BoolGetDatum(opts.binary);
1854 : 10 : replaces[Anum_pg_subscription_subbinary - 1] = true;
1855 : : }
1856 : :
1857 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_STREAMING))
1858 : : {
1859 : 18 : values[Anum_pg_subscription_substream - 1] =
1860 : 18 : CharGetDatum(opts.streaming);
1861 : 18 : replaces[Anum_pg_subscription_substream - 1] = true;
1862 : : }
1863 : :
1864 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_DISABLE_ON_ERR))
1865 : : {
1866 : : values[Anum_pg_subscription_subdisableonerr - 1]
1867 : 12 : = BoolGetDatum(opts.disableonerr);
1868 : : replaces[Anum_pg_subscription_subdisableonerr - 1]
1869 : 12 : = true;
1870 : : }
1871 : :
1872 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_PASSWORD_REQUIRED))
1873 : : {
1874 : : /* Non-superuser may not disable password_required. */
1875 [ + + - + ]: 8 : if (!opts.passwordrequired && !superuser())
1876 [ # # ]: 0 : ereport(ERROR,
1877 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1878 : : errmsg("password_required=false is superuser-only"),
1879 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1880 : :
1881 : : values[Anum_pg_subscription_subpasswordrequired - 1]
1882 : 8 : = BoolGetDatum(opts.passwordrequired);
1883 : : replaces[Anum_pg_subscription_subpasswordrequired - 1]
1884 : 8 : = true;
1885 : : }
1886 : :
1887 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_RUN_AS_OWNER))
1888 : : {
1889 : 9 : values[Anum_pg_subscription_subrunasowner - 1] =
1890 : 9 : BoolGetDatum(opts.runasowner);
1891 : 9 : replaces[Anum_pg_subscription_subrunasowner - 1] = true;
1892 : : }
1893 : :
1894 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_TWOPHASE_COMMIT))
1895 : : {
1896 : : /*
1897 : : * We need to update both the slot and the subscription
1898 : : * for the two_phase option. We can enable the two_phase
1899 : : * option for a slot only once the initial data
1900 : : * synchronization is done. This is to avoid missing some
1901 : : * data as explained in comments atop worker.c.
1902 : : */
1903 : 3 : update_two_phase = !opts.twophase;
1904 : :
1905 : 3 : CheckAlterSubOption(sub, "two_phase", update_two_phase,
1906 : : isTopLevel);
1907 : :
1908 : : /*
1909 : : * Modifying the two_phase slot option requires a slot
1910 : : * lookup by slot name, so changing the slot name at the
1911 : : * same time is not allowed.
1912 : : */
1913 [ + + ]: 3 : if (update_two_phase &&
1914 [ - + ]: 1 : IsSet(opts.specified_opts, SUBOPT_SLOT_NAME))
1915 [ # # ]: 0 : ereport(ERROR,
1916 : : (errcode(ERRCODE_SYNTAX_ERROR),
1917 : : errmsg("\"slot_name\" and \"two_phase\" cannot be altered at the same time")));
1918 : :
1919 : : /*
1920 : : * Note that workers may still survive even if the
1921 : : * subscription has been disabled.
1922 : : *
1923 : : * Ensure workers have already been exited to avoid
1924 : : * getting prepared transactions while we are disabling
1925 : : * the two_phase option. Otherwise, the changes of an
1926 : : * already prepared transaction can be replicated again
1927 : : * along with its corresponding commit, leading to
1928 : : * duplicate data or errors.
1929 : : */
1930 [ - + ]: 3 : if (logicalrep_workers_find(subid, true, true))
1931 [ # # ]: 0 : ereport(ERROR,
1932 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1933 : : errmsg("cannot alter \"two_phase\" when logical replication worker is still running"),
1934 : : errhint("Try again after some time.")));
1935 : :
1936 : : /*
1937 : : * two_phase cannot be disabled if there are any
1938 : : * uncommitted prepared transactions present otherwise it
1939 : : * can lead to duplicate data or errors as explained in
1940 : : * the comment above.
1941 : : */
1942 [ + + ]: 3 : if (update_two_phase &&
1943 [ + - ]: 1 : sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED &&
1944 [ - + ]: 1 : LookupGXactBySubid(subid))
1945 [ # # ]: 0 : ereport(ERROR,
1946 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1947 : : errmsg("cannot disable \"two_phase\" when prepared transactions exist"),
1948 : : errhint("Resolve these transactions and try again.")));
1949 : :
1950 : : /* Change system catalog accordingly */
1951 : 3 : values[Anum_pg_subscription_subtwophasestate - 1] =
1952 [ + + ]: 3 : CharGetDatum(opts.twophase ?
1953 : : LOGICALREP_TWOPHASE_STATE_PENDING :
1954 : : LOGICALREP_TWOPHASE_STATE_DISABLED);
1955 : 3 : replaces[Anum_pg_subscription_subtwophasestate - 1] = true;
1956 : : }
1957 : :
1958 [ + + ]: 189 : if (IsSet(opts.specified_opts, SUBOPT_FAILOVER))
1959 : : {
1960 : : /*
1961 : : * Similar to the two_phase case above, we need to update
1962 : : * the failover option for both the slot and the
1963 : : * subscription.
1964 : : */
1965 : 9 : update_failover = true;
1966 : :
1967 : 9 : CheckAlterSubOption(sub, "failover", update_failover,
1968 : : isTopLevel);
1969 : :
1970 : 4 : values[Anum_pg_subscription_subfailover - 1] =
1971 : 4 : BoolGetDatum(opts.failover);
1972 : 4 : replaces[Anum_pg_subscription_subfailover - 1] = true;
1973 : : }
1974 : :
1975 [ + + ]: 184 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES))
1976 : : {
1977 : 2 : values[Anum_pg_subscription_subretaindeadtuples - 1] =
1978 : 2 : BoolGetDatum(opts.retaindeadtuples);
1979 : 2 : replaces[Anum_pg_subscription_subretaindeadtuples - 1] = true;
1980 : :
1981 : : /*
1982 : : * Update the retention status only if there's a change in
1983 : : * the retain_dead_tuples option value.
1984 : : *
1985 : : * Automatically marking retention as active when
1986 : : * retain_dead_tuples is enabled may not always be ideal,
1987 : : * especially if retention was previously stopped and the
1988 : : * user toggles retain_dead_tuples without adjusting the
1989 : : * publisher workload. However, this behavior provides a
1990 : : * convenient way for users to manually refresh the
1991 : : * retention status. Since retention will be stopped again
1992 : : * unless the publisher workload is reduced, this approach
1993 : : * is acceptable for now.
1994 : : */
1995 [ + - ]: 2 : if (opts.retaindeadtuples != sub->retaindeadtuples)
1996 : : {
1997 : 2 : values[Anum_pg_subscription_subretentionactive - 1] =
1998 : 2 : BoolGetDatum(opts.retaindeadtuples);
1999 : 2 : replaces[Anum_pg_subscription_subretentionactive - 1] = true;
2000 : :
2001 : 2 : retention_active = opts.retaindeadtuples;
2002 : : }
2003 : :
2004 : 2 : CheckAlterSubOption(sub, "retain_dead_tuples", false, isTopLevel);
2005 : :
2006 : : /*
2007 : : * Workers may continue running even after the
2008 : : * subscription has been disabled.
2009 : : *
2010 : : * To prevent race conditions (as described in
2011 : : * CheckAlterSubOption()), ensure that all worker
2012 : : * processes have already exited before proceeding.
2013 : : */
2014 [ - + ]: 1 : if (logicalrep_workers_find(subid, true, true))
2015 [ # # ]: 0 : ereport(ERROR,
2016 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2017 : : errmsg("cannot alter retain_dead_tuples when logical replication worker is still running"),
2018 : : errhint("Try again after some time.")));
2019 : :
2020 : : /*
2021 : : * Notify the launcher to manage the replication slot for
2022 : : * conflict detection. This ensures that replication slot
2023 : : * is efficiently handled (created, updated, or dropped)
2024 : : * in response to any configuration changes.
2025 : : */
2026 : 1 : ApplyLauncherWakeupAtCommit();
2027 : :
2028 : 1 : check_pub_rdt = opts.retaindeadtuples;
2029 : 1 : retain_dead_tuples = opts.retaindeadtuples;
2030 : : }
2031 : :
2032 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_MAX_RETENTION_DURATION))
2033 : : {
2034 : 6 : values[Anum_pg_subscription_submaxretention - 1] =
2035 : 6 : Int32GetDatum(opts.maxretention);
2036 : 6 : replaces[Anum_pg_subscription_submaxretention - 1] = true;
2037 : :
2038 : 6 : max_retention = opts.maxretention;
2039 : : }
2040 : :
2041 : : /*
2042 : : * Ensure that system configuration parameters are set
2043 : : * appropriately to support retain_dead_tuples and
2044 : : * max_retention_duration.
2045 : : */
2046 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES) ||
2047 [ + + ]: 182 : IsSet(opts.specified_opts, SUBOPT_MAX_RETENTION_DURATION))
2048 : 7 : CheckSubDeadTupleRetention(true, !sub->enabled, NOTICE,
2049 : : retain_dead_tuples,
2050 : : retention_active,
2051 : 7 : (max_retention > 0));
2052 : :
2053 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_ORIGIN))
2054 : : {
2055 : 6 : values[Anum_pg_subscription_suborigin - 1] =
2056 : 6 : CStringGetTextDatum(opts.origin);
2057 : 6 : replaces[Anum_pg_subscription_suborigin - 1] = true;
2058 : :
2059 : : /*
2060 : : * Check if changes from different origins may be received
2061 : : * from the publisher when the origin is changed to ANY
2062 : : * and retain_dead_tuples is enabled. Use |= so that we
2063 : : * don't clear the flag already set when
2064 : : * retain_dead_tuples was changed in the same command.
2065 : : */
2066 [ + + ]: 8 : check_pub_rdt |= retain_dead_tuples &&
2067 [ + + ]: 2 : pg_strcasecmp(opts.origin, LOGICALREP_ORIGIN_ANY) == 0;
2068 : :
2069 : 6 : origin = opts.origin;
2070 : : }
2071 : :
2072 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_WAL_RECEIVER_TIMEOUT))
2073 : : {
2074 : 8 : values[Anum_pg_subscription_subwalrcvtimeout - 1] =
2075 : 8 : CStringGetTextDatum(opts.wal_receiver_timeout);
2076 : 8 : replaces[Anum_pg_subscription_subwalrcvtimeout - 1] = true;
2077 : : }
2078 : :
2079 [ + + ]: 183 : if (IsSet(opts.specified_opts, SUBOPT_CONFLICT_LOG_DEST))
2080 : : {
2081 : : ConflictLogDest old_dest =
2082 : 16 : GetConflictLogDest(sub->conflictlogdest);
2083 : :
2084 [ + + ]: 16 : if (opts.conflictlogdest != old_dest)
2085 : : {
2086 : : bool update_relid;
2087 : 12 : Oid relid = InvalidOid;
2088 : :
2089 : 12 : values[Anum_pg_subscription_subconflictlogdest - 1] =
2090 : 12 : CStringGetTextDatum(ConflictLogDestNames[opts.conflictlogdest]);
2091 : 12 : replaces[Anum_pg_subscription_subconflictlogdest - 1] = true;
2092 : :
2093 : 12 : update_relid = alter_sub_conflict_log_dest(sub,
2094 : : old_dest,
2095 : : opts.conflictlogdest,
2096 : : &relid);
2097 [ + + ]: 12 : if (update_relid)
2098 : : {
2099 : 8 : values[Anum_pg_subscription_subconflictlogrelid - 1] =
2100 : 8 : ObjectIdGetDatum(relid);
2101 : 8 : replaces[Anum_pg_subscription_subconflictlogrelid - 1] =
2102 : : true;
2103 : : }
2104 : : }
2105 : : }
2106 : :
2107 : 183 : update_tuple = true;
2108 : 183 : break;
2109 : : }
2110 : :
2111 : 87 : case ALTER_SUBSCRIPTION_ENABLED:
2112 : : {
2113 : : Assert(IsSet(opts.specified_opts, SUBOPT_ENABLED));
2114 : :
2115 [ + + + - ]: 87 : if (!sub->slotname && opts.enabled)
2116 [ + - ]: 4 : ereport(ERROR,
2117 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2118 : : errmsg("cannot enable subscription that does not have a slot name")));
2119 : :
2120 : : /*
2121 : : * Check track_commit_timestamp only when enabling the
2122 : : * subscription in case it was disabled after creation. See
2123 : : * comments atop CheckSubDeadTupleRetention() for details.
2124 : : */
2125 : 83 : CheckSubDeadTupleRetention(opts.enabled, !opts.enabled,
2126 : 83 : WARNING, sub->retaindeadtuples,
2127 : 83 : sub->retentionactive, false);
2128 : :
2129 : 83 : values[Anum_pg_subscription_subenabled - 1] =
2130 : 83 : BoolGetDatum(opts.enabled);
2131 : 83 : replaces[Anum_pg_subscription_subenabled - 1] = true;
2132 : :
2133 [ + + ]: 83 : if (opts.enabled)
2134 : 34 : ApplyLauncherWakeupAtCommit();
2135 : :
2136 : 83 : update_tuple = true;
2137 : 83 : break;
2138 : : }
2139 : :
2140 : 1 : case ALTER_SUBSCRIPTION_SERVER:
2141 : : {
2142 : : ForeignServer *new_server;
2143 : : ObjectAddress referenced;
2144 : : AclResult aclresult;
2145 : :
2146 : : /*
2147 : : * Remove what was there before, either another foreign server
2148 : : * or a connection string.
2149 : : */
2150 [ - + ]: 1 : if (form->subserver)
2151 : : {
2152 : 0 : deleteDependencyRecordsForSpecific(SubscriptionRelationId, form->oid,
2153 : : DEPENDENCY_NORMAL,
2154 : : ForeignServerRelationId, form->subserver);
2155 : : }
2156 : : else
2157 : : {
2158 : 1 : nulls[Anum_pg_subscription_subconninfo - 1] = true;
2159 : 1 : replaces[Anum_pg_subscription_subconninfo - 1] = true;
2160 : : }
2161 : :
2162 : : /*
2163 : : * Check that the subscription owner has USAGE privileges on
2164 : : * the server.
2165 : : */
2166 : 1 : new_server = GetForeignServerByName(stmt->servername, false);
2167 : 1 : aclresult = object_aclcheck(ForeignServerRelationId,
2168 : : new_server->serverid,
2169 : : form->subowner, ACL_USAGE);
2170 [ - + ]: 1 : if (aclresult != ACLCHECK_OK)
2171 [ # # ]: 0 : ereport(ERROR,
2172 : : errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2173 : : errmsg("subscription owner \"%s\" does not have permission on foreign server \"%s\"",
2174 : : GetUserNameFromId(form->subowner, false),
2175 : : new_server->servername));
2176 : :
2177 : : /* check user mapping */
2178 : 1 : GetUserMappingExtended(form->subowner, new_server->serverid, WARNING);
2179 : :
2180 : 1 : new_conninfo = ForeignServerConnectionString(form->subowner,
2181 : : new_server);
2182 : :
2183 : : /* Load the library providing us libpq calls. */
2184 : 1 : load_file("libpqwalreceiver", false);
2185 : : /* Check the connection info string. */
2186 [ - + - - ]: 1 : walrcv_check_conninfo(new_conninfo,
2187 : : sub->passwordrequired && !sub->ownersuperuser);
2188 : :
2189 : 1 : values[Anum_pg_subscription_subserver - 1] = ObjectIdGetDatum(new_server->serverid);
2190 : 1 : replaces[Anum_pg_subscription_subserver - 1] = true;
2191 : :
2192 : 1 : ObjectAddressSet(referenced, ForeignServerRelationId, new_server->serverid);
2193 : 1 : recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
2194 : :
2195 : 1 : update_tuple = true;
2196 : : }
2197 : :
2198 : : /*
2199 : : * Since the remote server configuration might have changed,
2200 : : * perform a check to ensure it permits enabling
2201 : : * retain_dead_tuples.
2202 : : */
2203 : 1 : check_pub_rdt = sub->retaindeadtuples;
2204 : 1 : break;
2205 : :
2206 : 22 : case ALTER_SUBSCRIPTION_CONNECTION:
2207 : : /* remove reference to foreign server and dependencies, if present */
2208 [ + + ]: 22 : if (form->subserver)
2209 : : {
2210 : 9 : deleteDependencyRecordsForSpecific(SubscriptionRelationId, form->oid,
2211 : : DEPENDENCY_NORMAL,
2212 : : ForeignServerRelationId, form->subserver);
2213 : :
2214 : 9 : values[Anum_pg_subscription_subserver - 1] = ObjectIdGetDatum(InvalidOid);
2215 : 9 : replaces[Anum_pg_subscription_subserver - 1] = true;
2216 : : }
2217 : :
2218 : 22 : new_conninfo = stmt->conninfo;
2219 : :
2220 : : /* Load the library providing us libpq calls. */
2221 : 22 : load_file("libpqwalreceiver", false);
2222 : : /* Check the connection info string. */
2223 [ + + + + ]: 22 : walrcv_check_conninfo(new_conninfo,
2224 : : sub->passwordrequired && !sub->ownersuperuser);
2225 : :
2226 : 18 : values[Anum_pg_subscription_subconninfo - 1] =
2227 : 18 : CStringGetTextDatum(stmt->conninfo);
2228 : 18 : replaces[Anum_pg_subscription_subconninfo - 1] = true;
2229 : 18 : update_tuple = true;
2230 : :
2231 : : /*
2232 : : * Since the remote server configuration might have changed,
2233 : : * perform a check to ensure it permits enabling
2234 : : * retain_dead_tuples.
2235 : : */
2236 : 18 : check_pub_rdt = sub->retaindeadtuples;
2237 : 18 : break;
2238 : :
2239 : 23 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
2240 : : {
2241 : 23 : values[Anum_pg_subscription_subpublications - 1] =
2242 : 23 : publicationListToArray(stmt->publication);
2243 : 23 : replaces[Anum_pg_subscription_subpublications - 1] = true;
2244 : :
2245 : 23 : update_tuple = true;
2246 : :
2247 : : /* Refresh if user asked us to. */
2248 [ + + ]: 23 : if (opts.refresh)
2249 : : {
2250 [ - + ]: 15 : if (!sub->enabled)
2251 [ # # ]: 0 : ereport(ERROR,
2252 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2253 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
2254 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION ... WITH (refresh = false).")));
2255 : :
2256 : : /*
2257 : : * See ALTER_SUBSCRIPTION_REFRESH_PUBLICATION for details
2258 : : * why this is not allowed.
2259 : : */
2260 [ - + - - ]: 15 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
2261 [ # # ]: 0 : ereport(ERROR,
2262 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2263 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
2264 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
2265 : :
2266 : 15 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
2267 : :
2268 : : /* Make sure refresh sees the new list of publications. */
2269 : 7 : sub->publications = stmt->publication;
2270 : :
2271 : 7 : AlterSubscription_refresh(sub, opts.copy_data,
2272 : : stmt->publication,
2273 : : orig_conninfo);
2274 : : }
2275 : :
2276 : 15 : break;
2277 : : }
2278 : :
2279 : 35 : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
2280 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
2281 : : {
2282 : : List *publist;
2283 : 35 : bool isadd = stmt->kind == ALTER_SUBSCRIPTION_ADD_PUBLICATION;
2284 : :
2285 : 35 : publist = merge_publications(sub->publications, stmt->publication, isadd, stmt->subname);
2286 : 11 : values[Anum_pg_subscription_subpublications - 1] =
2287 : 11 : publicationListToArray(publist);
2288 : 11 : replaces[Anum_pg_subscription_subpublications - 1] = true;
2289 : :
2290 : 11 : update_tuple = true;
2291 : :
2292 : : /* Refresh if user asked us to. */
2293 [ + + ]: 11 : if (opts.refresh)
2294 : : {
2295 : : /* We only need to validate user specified publications. */
2296 [ + + ]: 3 : List *validate_publications = (isadd) ? stmt->publication : NULL;
2297 : :
2298 [ - + ]: 3 : if (!sub->enabled)
2299 [ # # # # ]: 0 : ereport(ERROR,
2300 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2301 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
2302 : : /* translator: %s is an SQL ALTER command */
2303 : : errhint("Use %s instead.",
2304 : : isadd ?
2305 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION ... WITH (refresh = false)" :
2306 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION ... WITH (refresh = false)")));
2307 : :
2308 : : /*
2309 : : * See ALTER_SUBSCRIPTION_REFRESH_PUBLICATION for details
2310 : : * why this is not allowed.
2311 : : */
2312 [ - + - - ]: 3 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
2313 [ # # # # ]: 0 : ereport(ERROR,
2314 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2315 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
2316 : : /* translator: %s is an SQL ALTER command */
2317 : : errhint("Use %s with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.",
2318 : : isadd ?
2319 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION" :
2320 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION")));
2321 : :
2322 : 3 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
2323 : :
2324 : : /* Refresh the new list of publications. */
2325 : 3 : sub->publications = publist;
2326 : :
2327 : 3 : AlterSubscription_refresh(sub, opts.copy_data,
2328 : : validate_publications,
2329 : : orig_conninfo);
2330 : : }
2331 : :
2332 : 11 : break;
2333 : : }
2334 : :
2335 : 37 : case ALTER_SUBSCRIPTION_REFRESH_PUBLICATION:
2336 : : {
2337 [ + + ]: 37 : if (!sub->enabled)
2338 [ + - ]: 4 : ereport(ERROR,
2339 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2340 : : errmsg("%s is not allowed for disabled subscriptions",
2341 : : "ALTER SUBSCRIPTION ... REFRESH PUBLICATION")));
2342 : :
2343 : : /*
2344 : : * The subscription option "two_phase" requires that
2345 : : * replication has passed the initial table synchronization
2346 : : * phase before the two_phase becomes properly enabled.
2347 : : *
2348 : : * But, having reached this two-phase commit "enabled" state
2349 : : * we must not allow any subsequent table initialization to
2350 : : * occur. So the ALTER SUBSCRIPTION ... REFRESH PUBLICATION is
2351 : : * disallowed when the user had requested two_phase = on mode.
2352 : : *
2353 : : * The exception to this restriction is when copy_data =
2354 : : * false, because when copy_data is false the tablesync will
2355 : : * start already in READY state and will exit directly without
2356 : : * doing anything.
2357 : : *
2358 : : * For more details see comments atop worker.c.
2359 : : */
2360 [ - + - - ]: 33 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
2361 [ # # ]: 0 : ereport(ERROR,
2362 : : (errcode(ERRCODE_SYNTAX_ERROR),
2363 : : errmsg("ALTER SUBSCRIPTION ... REFRESH PUBLICATION with copy_data is not allowed when two_phase is enabled"),
2364 : : errhint("Use ALTER SUBSCRIPTION ... REFRESH PUBLICATION with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
2365 : :
2366 : 33 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION ... REFRESH PUBLICATION");
2367 : :
2368 : 29 : AlterSubscription_refresh(sub, opts.copy_data, NULL,
2369 : : orig_conninfo);
2370 : :
2371 : 28 : break;
2372 : : }
2373 : :
2374 : 5 : case ALTER_SUBSCRIPTION_REFRESH_SEQUENCES:
2375 : : {
2376 [ - + ]: 5 : if (!sub->enabled)
2377 [ # # ]: 0 : ereport(ERROR,
2378 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2379 : : errmsg("%s is not allowed for disabled subscriptions",
2380 : : "ALTER SUBSCRIPTION ... REFRESH SEQUENCES"));
2381 : :
2382 : 5 : AlterSubscription_refresh_seq(sub, orig_conninfo);
2383 : :
2384 : 5 : break;
2385 : : }
2386 : :
2387 : 11 : case ALTER_SUBSCRIPTION_SKIP:
2388 : : {
2389 : : /* ALTER SUBSCRIPTION ... SKIP supports only LSN option */
2390 : : Assert(IsSet(opts.specified_opts, SUBOPT_LSN));
2391 : :
2392 : : /*
2393 : : * If the user sets subskiplsn, we do a sanity check to make
2394 : : * sure that the specified LSN is a probable value.
2395 : : */
2396 [ + + ]: 11 : if (XLogRecPtrIsValid(opts.lsn))
2397 : : {
2398 : : ReplOriginId originid;
2399 : : char originname[NAMEDATALEN];
2400 : : XLogRecPtr remote_lsn;
2401 : :
2402 : 7 : ReplicationOriginNameForLogicalRep(subid, InvalidOid,
2403 : : originname, sizeof(originname));
2404 : 7 : originid = replorigin_by_name(originname, false);
2405 : 7 : remote_lsn = replorigin_get_progress(originid, false);
2406 : :
2407 : : /* Check the given LSN is at least a future LSN */
2408 [ + + - + ]: 7 : if (XLogRecPtrIsValid(remote_lsn) && opts.lsn < remote_lsn)
2409 [ # # ]: 0 : ereport(ERROR,
2410 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2411 : : errmsg("skip WAL location (LSN %X/%08X) must be greater than origin LSN %X/%08X",
2412 : : LSN_FORMAT_ARGS(opts.lsn),
2413 : : LSN_FORMAT_ARGS(remote_lsn))));
2414 : : }
2415 : :
2416 : 11 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(opts.lsn);
2417 : 11 : replaces[Anum_pg_subscription_subskiplsn - 1] = true;
2418 : :
2419 : 11 : update_tuple = true;
2420 : 11 : break;
2421 : : }
2422 : :
2423 : 0 : default:
2424 [ # # ]: 0 : elog(ERROR, "unrecognized ALTER SUBSCRIPTION kind %d",
2425 : : stmt->kind);
2426 : : }
2427 : :
2428 : : /* Update the catalog if needed. */
2429 [ + + ]: 355 : if (update_tuple)
2430 : : {
2431 : 322 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
2432 : : replaces);
2433 : :
2434 : 322 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2435 : :
2436 : 322 : heap_freetuple(tup);
2437 : : }
2438 : :
2439 : : /*
2440 : : * Try to acquire the connection necessary either for modifying the slot
2441 : : * or for checking if the remote server permits enabling
2442 : : * retain_dead_tuples.
2443 : : *
2444 : : * This has to be at the end because otherwise if there is an error while
2445 : : * doing the database operations we won't be able to rollback altered
2446 : : * slot.
2447 : : */
2448 [ + + + + : 355 : if (update_failover || update_two_phase || check_pub_rdt)
+ + ]
2449 : : {
2450 : : bool must_use_password;
2451 : : char *err;
2452 : : WalReceiverConn *wrconn;
2453 : :
2454 : : Assert(new_conninfo || orig_conninfo);
2455 : :
2456 : : /* Load the library providing us libpq calls. */
2457 : 7 : load_file("libpqwalreceiver", false);
2458 : :
2459 : : /*
2460 : : * Try to connect to the publisher, using the new connection string if
2461 : : * available.
2462 : : */
2463 [ + - - + ]: 7 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
2464 [ - + ]: 7 : wrconn = walrcv_connect(new_conninfo ? new_conninfo : orig_conninfo,
2465 : : true, true, must_use_password, sub->name,
2466 : : &err);
2467 [ - + ]: 7 : if (!wrconn)
2468 [ # # ]: 0 : ereport(ERROR,
2469 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2470 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
2471 : : sub->name, err)));
2472 : :
2473 [ + - ]: 7 : PG_TRY();
2474 : : {
2475 [ + + ]: 7 : if (retain_dead_tuples)
2476 : 3 : CheckPubDeadTupleRetention(wrconn);
2477 : :
2478 : 7 : check_publications_origin_tables(wrconn, sub->publications, false,
2479 : : retain_dead_tuples, origin, NULL, 0,
2480 : : sub->name);
2481 : :
2482 [ + + + + ]: 7 : if (update_failover || update_two_phase)
2483 [ + + + + ]: 5 : walrcv_alter_slot(wrconn, sub->slotname,
2484 : : update_failover ? &opts.failover : NULL,
2485 : : update_two_phase ? &opts.twophase : NULL);
2486 : : }
2487 : 0 : PG_FINALLY();
2488 : : {
2489 : 7 : walrcv_disconnect(wrconn);
2490 : : }
2491 [ - + ]: 7 : PG_END_TRY();
2492 : : }
2493 : :
2494 : 355 : table_close(rel, RowExclusiveLock);
2495 : :
2496 [ - + ]: 355 : InvokeObjectPostAlterHook(SubscriptionRelationId, subid, 0);
2497 : :
2498 : : /* Wake up related replication workers to handle this change quickly. */
2499 : 355 : LogicalRepWorkersWakeupAtCommit(subid);
2500 : :
2501 : 355 : return myself;
2502 : : }
2503 : :
2504 : : /*
2505 : : * Construct conninfo from a subscription's server. Like libpqrcv_connect(),
2506 : : * if an error occurs, set *err to the error message and return NULL.
2507 : : *
2508 : : * However, failures in ForeignServerConnectionString() may ereport(ERROR),
2509 : : * and (also like libpqrcv_connect) it's not worth adding the machinery to
2510 : : * pass all of those back to the caller just to cover this one case.
2511 : : */
2512 : : static char *
2513 : 8 : construct_subserver_conninfo(Oid subserver, Oid subowner, char **err)
2514 : : {
2515 : : AclResult aclresult;
2516 : : ForeignServer *server;
2517 : :
2518 : 8 : *err = NULL;
2519 : :
2520 : 8 : server = GetForeignServer(subserver);
2521 : :
2522 : 8 : aclresult = object_aclcheck(ForeignServerRelationId, subserver,
2523 : : subowner, ACL_USAGE);
2524 [ + + ]: 8 : if (aclresult != ACLCHECK_OK)
2525 : : {
2526 : : /*
2527 : : * Unable to generate connection string because permissions on the
2528 : : * foreign server have been removed. Follow the same logic as an
2529 : : * unusable subconninfo (which will result in an ERROR later unless
2530 : : * slot_name = NONE).
2531 : : */
2532 : 4 : *err = psprintf(_("subscription owner \"%s\" does not have permission on foreign server \"%s\""),
2533 : : GetUserNameFromId(subowner, false),
2534 : : server->servername);
2535 : 4 : return NULL;
2536 : : }
2537 : :
2538 : 4 : return ForeignServerConnectionString(subowner, server);
2539 : : }
2540 : :
2541 : : /*
2542 : : * Drop subscription's conflict log table
2543 : : *
2544 : : * The conflict log table is registered as an internal dependency of the
2545 : : * subscription. This function removes the dependency by performing a
2546 : : * cascading deletion on the subscription object, which in turn drops the
2547 : : * associated conflict log table.
2548 : : *
2549 : : * This is used to clean up conflict log tables that are no longer required,
2550 : : * preventing accumulation of stale or orphaned relations.
2551 : : *
2552 : : * NOTE:
2553 : : * Only conflict log tables are currently managed via this internal dependency
2554 : : * mechanism.
2555 : : */
2556 : : static void
2557 : 172 : drop_sub_conflict_log_table(Oid subid, char *subname, Oid subconflictlogrelid)
2558 : : {
2559 : : /* Drop any dependent conflict log table */
2560 [ + + ]: 172 : if (OidIsValid(subconflictlogrelid))
2561 : : {
2562 : : ObjectAddress object;
2563 : : char *conflictrelname;
2564 : :
2565 : 13 : conflictrelname = get_rel_name(subconflictlogrelid);
2566 [ - + ]: 13 : if (conflictrelname == NULL)
2567 [ # # ]: 0 : elog(ERROR, "cache lookup failed for relation %u",
2568 : : subconflictlogrelid);
2569 : :
2570 : : /*
2571 : : * By using PERFORM_DELETION_SKIP_ORIGINAL, we ensure that only the
2572 : : * conflict log table is deleted while the subscription remains.
2573 : : */
2574 : 13 : ObjectAddressSet(object, SubscriptionRelationId, subid);
2575 : 13 : performDeletion(&object, DROP_CASCADE,
2576 : : PERFORM_DELETION_INTERNAL |
2577 : : PERFORM_DELETION_SKIP_ORIGINAL);
2578 : :
2579 [ + + ]: 13 : ereport(NOTICE,
2580 : : errmsg("dropped conflict log table \"%s\" for subscription \"%s\"",
2581 : : get_qualified_objname(PG_CONFLICT_NAMESPACE, conflictrelname),
2582 : : subname));
2583 : : }
2584 : 172 : }
2585 : :
2586 : : /*
2587 : : * Drop a subscription
2588 : : */
2589 : : void
2590 : 180 : DropSubscription(DropSubscriptionStmt *stmt, bool isTopLevel)
2591 : : {
2592 : : Relation rel;
2593 : : ObjectAddress myself;
2594 : : HeapTuple tup;
2595 : : Oid subid;
2596 : : Oid subowner;
2597 : : Oid subserver;
2598 : : Oid subconflictlogrelid;
2599 : 180 : char *subconninfo = NULL;
2600 : : Datum datum;
2601 : : bool isnull;
2602 : : char *subname;
2603 : 180 : char *conninfo = NULL;
2604 : : char *slotname;
2605 : : List *subworkers;
2606 : : ListCell *lc;
2607 : : char originname[NAMEDATALEN];
2608 : 180 : char *err = NULL;
2609 : 180 : WalReceiverConn *wrconn = NULL;
2610 : : Form_pg_subscription form;
2611 : : List *rstates;
2612 : : bool must_use_password;
2613 : :
2614 : : /*
2615 : : * The launcher may concurrently start a new worker for this subscription.
2616 : : * During initialization, the worker checks for subscription validity and
2617 : : * exits if the subscription has already been dropped. See
2618 : : * InitializeLogRepWorker.
2619 : : */
2620 : 180 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
2621 : :
2622 : 180 : tup = SearchSysCache2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
2623 : 180 : CStringGetDatum(stmt->subname));
2624 : :
2625 [ + + ]: 180 : if (!HeapTupleIsValid(tup))
2626 : : {
2627 : 8 : table_close(rel, NoLock);
2628 : :
2629 [ + + ]: 8 : if (!stmt->missing_ok)
2630 [ + - ]: 4 : ereport(ERROR,
2631 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
2632 : : errmsg("subscription \"%s\" does not exist",
2633 : : stmt->subname)));
2634 : : else
2635 [ + - ]: 4 : ereport(NOTICE,
2636 : : (errmsg("subscription \"%s\" does not exist, skipping",
2637 : : stmt->subname)));
2638 : :
2639 : 86 : return;
2640 : : }
2641 : :
2642 : 172 : datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
2643 : : Anum_pg_subscription_subconninfo, &isnull);
2644 [ + + ]: 172 : if (!isnull)
2645 : 155 : subconninfo = TextDatumGetCString(datum);
2646 : :
2647 : 172 : form = (Form_pg_subscription) GETSTRUCT(tup);
2648 : 172 : subid = form->oid;
2649 : 172 : subowner = form->subowner;
2650 : 172 : subserver = form->subserver;
2651 : 172 : subconflictlogrelid = form->subconflictlogrelid;
2652 [ + + + + ]: 172 : must_use_password = !superuser_arg(subowner) && form->subpasswordrequired;
2653 : :
2654 : : /* must be owner */
2655 [ - + ]: 172 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
2656 : 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
2657 : 0 : stmt->subname);
2658 : :
2659 : : /* DROP hook for the subscription being removed */
2660 [ - + ]: 172 : InvokeObjectDropHook(SubscriptionRelationId, subid, 0);
2661 : :
2662 : : /*
2663 : : * Lock the subscription so nobody else can do anything with it (including
2664 : : * the replication workers).
2665 : : */
2666 : 172 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
2667 : :
2668 : : /* Get subname */
2669 : 172 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID, tup,
2670 : : Anum_pg_subscription_subname);
2671 : 172 : subname = pstrdup(NameStr(*DatumGetName(datum)));
2672 : :
2673 : : /* Get slotname */
2674 : 172 : datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
2675 : : Anum_pg_subscription_subslotname, &isnull);
2676 [ + + ]: 172 : if (!isnull)
2677 : 90 : slotname = pstrdup(NameStr(*DatumGetName(datum)));
2678 : : else
2679 : 82 : slotname = NULL;
2680 : :
2681 : : /*
2682 : : * Since dropping a replication slot is not transactional, the replication
2683 : : * slot stays dropped even if the transaction rolls back. So we cannot
2684 : : * run DROP SUBSCRIPTION inside a transaction block if dropping the
2685 : : * replication slot. Also, in this case, we report a message for dropping
2686 : : * the subscription to the cumulative stats system.
2687 : : *
2688 : : * XXX The command name should really be something like "DROP SUBSCRIPTION
2689 : : * of a subscription that is associated with a replication slot", but we
2690 : : * don't have the proper facilities for that.
2691 : : */
2692 [ + + ]: 172 : if (slotname)
2693 : 90 : PreventInTransactionBlock(isTopLevel, "DROP SUBSCRIPTION");
2694 : :
2695 : 168 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
2696 : 168 : EventTriggerSQLDropAddObject(&myself, true, true);
2697 : :
2698 : : /* Remove the tuple from catalog. */
2699 : 168 : CatalogTupleDelete(rel, &tup->t_self);
2700 : :
2701 : 168 : ReleaseSysCache(tup);
2702 : :
2703 : : /*
2704 : : * Stop all the subscription workers immediately.
2705 : : *
2706 : : * This is necessary if we are dropping the replication slot, so that the
2707 : : * slot becomes accessible.
2708 : : *
2709 : : * It is also necessary if the subscription is disabled and was disabled
2710 : : * in the same transaction. Then the workers haven't seen the disabling
2711 : : * yet and will still be running, leading to hangs later when we want to
2712 : : * drop the replication origin. If the subscription was disabled before
2713 : : * this transaction, then there shouldn't be any workers left, so this
2714 : : * won't make a difference.
2715 : : *
2716 : : * New workers won't be started because we hold an exclusive lock on the
2717 : : * subscription till the end of the transaction.
2718 : : */
2719 : 168 : subworkers = logicalrep_workers_find(subid, false, true);
2720 [ + + + + : 251 : foreach(lc, subworkers)
+ + ]
2721 : : {
2722 : 83 : LogicalRepWorker *w = (LogicalRepWorker *) lfirst(lc);
2723 : :
2724 : 83 : logicalrep_worker_stop(w->type, w->subid, w->relid);
2725 : : }
2726 : 168 : list_free(subworkers);
2727 : :
2728 : : /*
2729 : : * Remove the no-longer-useful entry in the launcher's table of apply
2730 : : * worker start times.
2731 : : *
2732 : : * If this transaction rolls back, the launcher might restart a failed
2733 : : * apply worker before wal_retrieve_retry_interval milliseconds have
2734 : : * elapsed, but that's pretty harmless.
2735 : : */
2736 : 168 : ApplyLauncherForgetWorkerStartTime(subid);
2737 : :
2738 : : /*
2739 : : * Cleanup of tablesync replication origins.
2740 : : *
2741 : : * Any READY-state relations would already have dealt with clean-ups.
2742 : : *
2743 : : * Note that the state can't change because we have already stopped both
2744 : : * the apply and tablesync workers and they can't restart because of
2745 : : * exclusive lock on the subscription.
2746 : : */
2747 : 168 : rstates = GetSubscriptionRelations(subid, true, false, true);
2748 [ + + + + : 173 : foreach(lc, rstates)
+ + ]
2749 : : {
2750 : 5 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
2751 : 5 : Oid relid = rstate->relid;
2752 : :
2753 : : /* Only cleanup resources of tablesync workers */
2754 [ - + ]: 5 : if (!OidIsValid(relid))
2755 : 0 : continue;
2756 : :
2757 : : /*
2758 : : * Drop the tablesync's origin tracking if exists.
2759 : : *
2760 : : * It is possible that the origin is not yet created for tablesync
2761 : : * worker so passing missing_ok = true. This can happen for the states
2762 : : * before SUBREL_STATE_DATASYNC.
2763 : : */
2764 : 5 : ReplicationOriginNameForLogicalRep(subid, relid, originname,
2765 : : sizeof(originname));
2766 : 5 : replorigin_drop_by_name(originname, true, false);
2767 : : }
2768 : :
2769 : : /* Drop subscription's conflict log table */
2770 : 168 : drop_sub_conflict_log_table(subid, subname, subconflictlogrelid);
2771 : :
2772 : : /* Clean up dependencies */
2773 : 168 : deleteDependencyRecordsFor(SubscriptionRelationId, subid, false);
2774 : 168 : deleteSharedDependencyRecordsFor(SubscriptionRelationId, subid, 0);
2775 : :
2776 : : /* Remove any associated relation synchronization states. */
2777 : 168 : RemoveSubscriptionRel(subid, InvalidOid);
2778 : :
2779 : : /* Remove the origin tracking if exists. */
2780 : 168 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
2781 : 168 : replorigin_drop_by_name(originname, true, false);
2782 : :
2783 : : /*
2784 : : * Tell the cumulative stats system that the subscription is getting
2785 : : * dropped.
2786 : : */
2787 : 168 : pgstat_drop_subscription(subid);
2788 : :
2789 : : /*
2790 : : * If there is no slot associated with the subscription, we can finish
2791 : : * here.
2792 : : */
2793 [ + + + - ]: 168 : if (!slotname && rstates == NIL)
2794 : : {
2795 : 82 : table_close(rel, NoLock);
2796 : 82 : return;
2797 : : }
2798 : :
2799 : : /*
2800 : : * Try to acquire the connection necessary for dropping slots.
2801 : : *
2802 : : * Note: If the slotname is NONE/NULL then we allow the command to finish
2803 : : * and users need to manually cleanup the apply and tablesync worker slots
2804 : : * later.
2805 : : *
2806 : : * This has to be at the end because otherwise if there is an error while
2807 : : * doing the database operations we won't be able to rollback dropped
2808 : : * slot.
2809 : : */
2810 : 86 : load_file("libpqwalreceiver", false);
2811 : :
2812 [ + + ]: 86 : if (OidIsValid(subserver))
2813 : 8 : conninfo = construct_subserver_conninfo(subserver, subowner, &err);
2814 : : else
2815 : 78 : conninfo = subconninfo;
2816 : :
2817 [ + + ]: 82 : if (conninfo)
2818 : 78 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
2819 : : subname, &err);
2820 : :
2821 [ + + ]: 82 : if (wrconn == NULL)
2822 : : {
2823 [ - + ]: 4 : if (!slotname)
2824 : : {
2825 : : /* be tidy */
2826 : 0 : list_free(rstates);
2827 : 0 : table_close(rel, NoLock);
2828 : 0 : return;
2829 : : }
2830 : : else
2831 : : {
2832 : 4 : ReportSlotConnectionError(rstates, subid, slotname, err);
2833 : : }
2834 : : }
2835 : :
2836 [ + + ]: 78 : PG_TRY();
2837 : : {
2838 [ + + + + : 83 : foreach(lc, rstates)
+ + ]
2839 : : {
2840 : 5 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
2841 : 5 : Oid relid = rstate->relid;
2842 : :
2843 : : /* Only cleanup resources of tablesync workers */
2844 [ - + ]: 5 : if (!OidIsValid(relid))
2845 : 0 : continue;
2846 : :
2847 : : /*
2848 : : * Drop the tablesync slots associated with removed tables.
2849 : : *
2850 : : * For SYNCDONE/READY states, the tablesync slot is known to have
2851 : : * already been dropped by the tablesync worker.
2852 : : *
2853 : : * For other states, there is no certainty, maybe the slot does
2854 : : * not exist yet. Also, if we fail after removing some of the
2855 : : * slots, next time, it will again try to drop already dropped
2856 : : * slots and fail. For these reasons, we allow missing_ok = true
2857 : : * for the drop.
2858 : : */
2859 [ + + ]: 5 : if (rstate->state != SUBREL_STATE_SYNCDONE)
2860 : : {
2861 : 3 : char syncslotname[NAMEDATALEN] = {0};
2862 : :
2863 : 3 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
2864 : : sizeof(syncslotname));
2865 : 3 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
2866 : : }
2867 : : }
2868 : :
2869 : 78 : list_free(rstates);
2870 : :
2871 : : /*
2872 : : * If there is a slot associated with the subscription, then drop the
2873 : : * replication slot at the publisher.
2874 : : */
2875 [ + - ]: 78 : if (slotname)
2876 : 78 : ReplicationSlotDropAtPubNode(wrconn, slotname, false);
2877 : : }
2878 : 1 : PG_FINALLY();
2879 : : {
2880 : 78 : walrcv_disconnect(wrconn);
2881 : : }
2882 [ + + ]: 78 : PG_END_TRY();
2883 : :
2884 : 77 : table_close(rel, NoLock);
2885 : : }
2886 : :
2887 : : /*
2888 : : * Drop the replication slot at the publisher node using the replication
2889 : : * connection.
2890 : : *
2891 : : * missing_ok - if true then only issue a LOG message if the slot doesn't
2892 : : * exist.
2893 : : */
2894 : : void
2895 : 291 : ReplicationSlotDropAtPubNode(WalReceiverConn *wrconn, char *slotname, bool missing_ok)
2896 : : {
2897 : : StringInfoData cmd;
2898 : :
2899 : : Assert(wrconn);
2900 : :
2901 : 291 : load_file("libpqwalreceiver", false);
2902 : :
2903 : 291 : initStringInfo(&cmd);
2904 : 291 : appendStringInfoString(&cmd, "DROP_REPLICATION_SLOT ");
2905 : 291 : appendQuotedIdentifier(&cmd, slotname);
2906 : 291 : appendStringInfoString(&cmd, " WAIT");
2907 : :
2908 [ + + ]: 291 : PG_TRY();
2909 : : {
2910 : : WalRcvExecResult *res;
2911 : :
2912 : 291 : res = walrcv_exec(wrconn, cmd.data, 0, NULL);
2913 : :
2914 [ + + ]: 291 : if (res->status == WALRCV_OK_COMMAND)
2915 : : {
2916 : : /* NOTICE. Success. */
2917 [ + + ]: 289 : ereport(NOTICE,
2918 : : (errmsg("dropped replication slot \"%s\" on publisher",
2919 : : slotname)));
2920 : : }
2921 [ + - + + ]: 2 : else if (res->status == WALRCV_ERROR &&
2922 : 1 : missing_ok &&
2923 [ + - ]: 1 : res->sqlstate == ERRCODE_UNDEFINED_OBJECT)
2924 : : {
2925 : : /* LOG. Error, but missing_ok = true. */
2926 [ + - ]: 1 : ereport(LOG,
2927 : : (errmsg("could not drop replication slot \"%s\" on publisher: %s",
2928 : : slotname, res->err)));
2929 : : }
2930 : : else
2931 : : {
2932 : : /* ERROR. */
2933 [ + - ]: 1 : ereport(ERROR,
2934 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2935 : : errmsg("could not drop replication slot \"%s\" on publisher: %s",
2936 : : slotname, res->err)));
2937 : : }
2938 : :
2939 : 290 : walrcv_clear_result(res);
2940 : : }
2941 : 1 : PG_FINALLY();
2942 : : {
2943 : 291 : pfree(cmd.data);
2944 : : }
2945 [ + + ]: 291 : PG_END_TRY();
2946 : 290 : }
2947 : :
2948 : : /*
2949 : : * Internal workhorse for changing a subscription owner
2950 : : */
2951 : : static void
2952 : 28 : AlterSubscriptionOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
2953 : : {
2954 : : Form_pg_subscription form;
2955 : : AclResult aclresult;
2956 : :
2957 : 28 : form = (Form_pg_subscription) GETSTRUCT(tup);
2958 : :
2959 : : /* Must only alter subscriptions belonging to the current database. */
2960 : : Assert(form->subdbid == MyDatabaseId);
2961 : :
2962 [ + + ]: 28 : if (form->subowner == newOwnerId)
2963 : 2 : return;
2964 : :
2965 [ - + ]: 26 : if (!object_ownercheck(SubscriptionRelationId, form->oid, GetUserId()))
2966 : 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
2967 : 0 : NameStr(form->subname));
2968 : :
2969 : : /*
2970 : : * Don't allow non-superuser modification of a subscription with
2971 : : * password_required=false.
2972 : : */
2973 [ - + - - ]: 26 : if (!form->subpasswordrequired && !superuser())
2974 [ # # ]: 0 : ereport(ERROR,
2975 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2976 : : errmsg("password_required=false is superuser-only"),
2977 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
2978 : :
2979 : : /* Must be able to become new owner */
2980 : 26 : check_can_set_role(GetUserId(), newOwnerId);
2981 : :
2982 : : /*
2983 : : * current owner must have CREATE on database
2984 : : *
2985 : : * This is consistent with how ALTER SCHEMA ... OWNER TO works, but some
2986 : : * other object types behave differently (e.g. you can't give a table to a
2987 : : * user who lacks CREATE privileges on a schema).
2988 : : */
2989 : 22 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
2990 : : GetUserId(), ACL_CREATE);
2991 [ - + ]: 22 : if (aclresult != ACLCHECK_OK)
2992 : 0 : aclcheck_error(aclresult, OBJECT_DATABASE,
2993 : 0 : get_database_name(MyDatabaseId));
2994 : :
2995 : : /*
2996 : : * The privileges will be checked before the connection is actually used,
2997 : : * so it does not need to be done here. Avoid unnecessary risk of errors
2998 : : * here, which could interfere with restore.
2999 : : *
3000 : : * However, it is convenient to check if a user mapping exists, and raise
3001 : : * a WARNING if not.
3002 : : */
3003 [ + + ]: 22 : if (OidIsValid(form->subserver))
3004 : 9 : GetUserMappingExtended(newOwnerId, form->subserver, WARNING);
3005 : :
3006 : 22 : form->subowner = newOwnerId;
3007 : 22 : CatalogTupleUpdate(rel, &tup->t_self, tup);
3008 : :
3009 : : /* Update owner of the conflict log table if it exists. */
3010 [ + + ]: 22 : if (OidIsValid(form->subconflictlogrelid))
3011 : 8 : ATExecChangeOwner(form->subconflictlogrelid, newOwnerId, true,
3012 : : AccessExclusiveLock);
3013 : :
3014 : : /* Update owner dependency reference */
3015 : 22 : changeDependencyOnOwner(SubscriptionRelationId,
3016 : : form->oid,
3017 : : newOwnerId);
3018 : :
3019 [ - + ]: 22 : InvokeObjectPostAlterHook(SubscriptionRelationId,
3020 : : form->oid, 0);
3021 : :
3022 : : /* Wake up related background processes to handle this change quickly. */
3023 : 22 : ApplyLauncherWakeupAtCommit();
3024 : 22 : LogicalRepWorkersWakeupAtCommit(form->oid);
3025 : : }
3026 : :
3027 : : /*
3028 : : * Change subscription owner -- by name
3029 : : */
3030 : : ObjectAddress
3031 : 27 : AlterSubscriptionOwner(const char *name, Oid newOwnerId)
3032 : : {
3033 : : Oid subid;
3034 : : HeapTuple tup;
3035 : : Relation rel;
3036 : : ObjectAddress address;
3037 : : Form_pg_subscription form;
3038 : :
3039 : 27 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
3040 : :
3041 : 27 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
3042 : : CStringGetDatum(name));
3043 : :
3044 [ - + ]: 27 : if (!HeapTupleIsValid(tup))
3045 [ # # ]: 0 : ereport(ERROR,
3046 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
3047 : : errmsg("subscription \"%s\" does not exist", name)));
3048 : :
3049 : 27 : form = (Form_pg_subscription) GETSTRUCT(tup);
3050 : 27 : subid = form->oid;
3051 : :
3052 : 27 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
3053 : :
3054 : 23 : ObjectAddressSet(address, SubscriptionRelationId, subid);
3055 : :
3056 : 23 : heap_freetuple(tup);
3057 : :
3058 : 23 : table_close(rel, RowExclusiveLock);
3059 : :
3060 : 23 : return address;
3061 : : }
3062 : :
3063 : : /*
3064 : : * Change subscription owner -- by OID
3065 : : */
3066 : : void
3067 : 2 : AlterSubscriptionOwner_oid(Oid subid, Oid newOwnerId)
3068 : : {
3069 : : HeapTuple tup;
3070 : : Relation rel;
3071 : : Form_pg_subscription form;
3072 : :
3073 : 2 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
3074 : :
3075 : 2 : tup = SearchSysCacheCopy1(SUBSCRIPTIONOID, ObjectIdGetDatum(subid));
3076 : :
3077 [ - + ]: 2 : if (!HeapTupleIsValid(tup))
3078 [ # # ]: 0 : ereport(ERROR,
3079 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
3080 : : errmsg("subscription with OID %u does not exist", subid)));
3081 : :
3082 : 2 : form = (Form_pg_subscription) GETSTRUCT(tup);
3083 : :
3084 : : /*
3085 : : * Don't process subscriptions belonging to other databases. While
3086 : : * pg_subscription is a shared catalog, subscriptions refer to db-local
3087 : : * objects which exist only in the database identified by subdbid.
3088 : : */
3089 [ + + ]: 2 : if (form->subdbid == MyDatabaseId)
3090 : 1 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
3091 : :
3092 : 2 : heap_freetuple(tup);
3093 : :
3094 : 2 : table_close(rel, RowExclusiveLock);
3095 : 2 : }
3096 : :
3097 : : /*
3098 : : * Check and log a warning if the publisher has subscribed to the same table,
3099 : : * its partition ancestors (if it's a partition), or its partition children (if
3100 : : * it's a partitioned table), from some other publishers. This check is
3101 : : * required in the following scenarios:
3102 : : *
3103 : : * 1) For CREATE SUBSCRIPTION and ALTER SUBSCRIPTION ... REFRESH PUBLICATION
3104 : : * statements with "copy_data = true" and "origin = none":
3105 : : * - Warn the user that data with an origin might have been copied.
3106 : : * - This check is skipped for tables already added, as incremental sync via
3107 : : * WAL allows origin tracking. The list of such tables is in
3108 : : * subrel_local_oids.
3109 : : *
3110 : : * 2) For CREATE SUBSCRIPTION and ALTER SUBSCRIPTION ... REFRESH PUBLICATION
3111 : : * statements with "retain_dead_tuples = true" and "origin = any", and for
3112 : : * ALTER SUBSCRIPTION statements that modify retain_dead_tuples or origin,
3113 : : * or when the publisher's status changes (e.g., due to a connection string
3114 : : * update):
3115 : : * - Warn the user that only conflict detection info for local changes on
3116 : : * the publisher is retained. Data from other origins may lack sufficient
3117 : : * details for reliable conflict detection.
3118 : : * - See comments atop worker.c for more details.
3119 : : */
3120 : : static void
3121 : 171 : check_publications_origin_tables(WalReceiverConn *wrconn, List *publications,
3122 : : bool copydata, bool retain_dead_tuples,
3123 : : char *origin, Oid *subrel_local_oids,
3124 : : int subrel_count, char *subname)
3125 : : {
3126 : : WalRcvExecResult *res;
3127 : : StringInfoData cmd;
3128 : : TupleTableSlot *slot;
3129 : 171 : Oid tableRow[1] = {TEXTOID};
3130 : 171 : List *publist = NIL;
3131 : : int i;
3132 : : bool check_rdt;
3133 : : bool check_table_sync;
3134 [ + - + + ]: 342 : bool origin_none = origin &&
3135 : 171 : pg_strcasecmp(origin, LOGICALREP_ORIGIN_NONE) == 0;
3136 : :
3137 : : /*
3138 : : * Enable retain_dead_tuples checks only when origin is set to 'any',
3139 : : * since with origin='none' only local changes are replicated to the
3140 : : * subscriber.
3141 : : */
3142 [ + + + + ]: 171 : check_rdt = retain_dead_tuples && !origin_none;
3143 : :
3144 : : /*
3145 : : * Enable table synchronization checks only when origin is 'none', to
3146 : : * ensure that data from other origins is not inadvertently copied.
3147 : : */
3148 [ + + + + ]: 171 : check_table_sync = copydata && origin_none;
3149 : :
3150 : : /* retain_dead_tuples and table sync checks occur separately */
3151 : : Assert(!(check_rdt && check_table_sync));
3152 : :
3153 : : /* Return if no checks are required */
3154 [ + + + + ]: 171 : if (!check_rdt && !check_table_sync)
3155 : 158 : return;
3156 : :
3157 : 13 : initStringInfo(&cmd);
3158 : 13 : appendStringInfoString(&cmd,
3159 : : "SELECT DISTINCT P.pubname AS pubname\n"
3160 : : "FROM pg_publication P,\n"
3161 : : " LATERAL pg_get_publication_tables(P.pubname) GPT\n"
3162 : : " JOIN pg_subscription_rel PS ON (GPT.relid = PS.srrelid OR"
3163 : : " GPT.relid IN (SELECT relid FROM pg_partition_ancestors(PS.srrelid) UNION"
3164 : : " SELECT relid FROM pg_partition_tree(PS.srrelid))),\n"
3165 : : " pg_class C JOIN pg_namespace N ON (N.oid = C.relnamespace)\n"
3166 : : "WHERE C.oid = GPT.relid AND P.pubname IN (");
3167 : 13 : GetPublicationsStr(publications, &cmd, true);
3168 : 13 : appendStringInfoString(&cmd, ")\n");
3169 : :
3170 : : /*
3171 : : * In case of ALTER SUBSCRIPTION ... REFRESH PUBLICATION,
3172 : : * subrel_local_oids contains the list of relation oids that are already
3173 : : * present on the subscriber. This check should be skipped for these
3174 : : * tables if checking for table sync scenario. However, when handling the
3175 : : * retain_dead_tuples scenario, ensure all tables are checked, as some
3176 : : * existing tables may now include changes from other origins due to newly
3177 : : * created subscriptions on the publisher.
3178 : : */
3179 [ + + ]: 13 : if (check_table_sync)
3180 : : {
3181 [ + + ]: 14 : for (i = 0; i < subrel_count; i++)
3182 : : {
3183 : 4 : Oid relid = subrel_local_oids[i];
3184 : 4 : char *schemaname = get_namespace_name(get_rel_namespace(relid));
3185 : 4 : char *tablename = get_rel_name(relid);
3186 : 4 : char *schemaname_lit = quote_literal_cstr(schemaname);
3187 : 4 : char *tablename_lit = quote_literal_cstr(tablename);
3188 : :
3189 : 4 : appendStringInfo(&cmd, "AND NOT (N.nspname = %s AND C.relname = %s)\n",
3190 : : schemaname_lit, tablename_lit);
3191 : :
3192 : 4 : pfree(schemaname_lit);
3193 : 4 : pfree(tablename_lit);
3194 : : }
3195 : : }
3196 : :
3197 : 13 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
3198 : 13 : pfree(cmd.data);
3199 : :
3200 [ - + ]: 13 : if (res->status != WALRCV_OK_TUPLES)
3201 [ # # ]: 0 : ereport(ERROR,
3202 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3203 : : errmsg("could not receive list of replicated tables from the publisher: %s",
3204 : : res->err)));
3205 : :
3206 : : /* Process publications. */
3207 : 13 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3208 [ + + ]: 18 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
3209 : : {
3210 : : char *pubname;
3211 : : bool isnull;
3212 : :
3213 : 5 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
3214 : : Assert(!isnull);
3215 : :
3216 : 5 : ExecClearTuple(slot);
3217 : 5 : publist = list_append_unique(publist, makeString(pubname));
3218 : : }
3219 : :
3220 : : /*
3221 : : * Log a warning if the publisher has subscribed to the same table from
3222 : : * some other publisher. We cannot know the origin of data during the
3223 : : * initial sync. Data origins can be found only from the WAL by looking at
3224 : : * the origin id.
3225 : : *
3226 : : * XXX: For simplicity, we don't check whether the table has any data or
3227 : : * not. If the table doesn't have any data then we don't need to
3228 : : * distinguish between data having origin and data not having origin so we
3229 : : * can avoid logging a warning for table sync scenario.
3230 : : */
3231 [ + + ]: 13 : if (publist)
3232 : : {
3233 : : StringInfoData pubnames;
3234 : :
3235 : : /* Prepare the list of publication(s) for warning message. */
3236 : 5 : initStringInfo(&pubnames);
3237 : 5 : GetPublicationsStr(publist, &pubnames, false);
3238 : :
3239 [ + + ]: 5 : if (check_table_sync)
3240 [ + - ]: 4 : ereport(WARNING,
3241 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3242 : : errmsg("subscription \"%s\" requested copy_data with origin = NONE but might copy data that had a different origin",
3243 : : subname),
3244 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains tables that are written to by other subscriptions.",
3245 : : "The subscription subscribes to publications (%s) that contain tables that are written to by other subscriptions.",
3246 : : list_length(publist), pubnames.data),
3247 : : errhint("Verify that initial data copied from the publisher tables did not come from other origins."));
3248 : : else
3249 [ + - ]: 1 : ereport(WARNING,
3250 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3251 : : errmsg("subscription \"%s\" enabled retain_dead_tuples but might not reliably detect conflicts for changes from different origins",
3252 : : subname),
3253 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains tables that are written to by other subscriptions.",
3254 : : "The subscription subscribes to publications (%s) that contain tables that are written to by other subscriptions.",
3255 : : list_length(publist), pubnames.data),
3256 : : errhint("Consider using origin = NONE or disabling retain_dead_tuples."));
3257 : : }
3258 : :
3259 : 13 : ExecDropSingleTupleTableSlot(slot);
3260 : :
3261 : 13 : walrcv_clear_result(res);
3262 : : }
3263 : :
3264 : : /*
3265 : : * This function is similar to check_publications_origin_tables and serves
3266 : : * same purpose for sequences.
3267 : : */
3268 : : static void
3269 : 169 : check_publications_origin_sequences(WalReceiverConn *wrconn, List *publications,
3270 : : bool copydata, char *origin,
3271 : : Oid *subrel_local_oids, int subrel_count,
3272 : : char *subname)
3273 : : {
3274 : : WalRcvExecResult *res;
3275 : : StringInfoData cmd;
3276 : : TupleTableSlot *slot;
3277 : 169 : Oid tableRow[1] = {TEXTOID};
3278 : 169 : List *publist = NIL;
3279 : :
3280 : : /*
3281 : : * Enable sequence synchronization checks only when origin is 'none' , to
3282 : : * ensure that sequence data from other origins is not inadvertently
3283 : : * copied. This check is necessary if the publisher is running PG19 or
3284 : : * later, where logical replication sequence synchronization is supported.
3285 : : */
3286 [ + + + + : 179 : if (!copydata || pg_strcasecmp(origin, LOGICALREP_ORIGIN_NONE) != 0 ||
- + ]
3287 : 10 : walrcv_server_version(wrconn) < 190000)
3288 : 159 : return;
3289 : :
3290 : 10 : initStringInfo(&cmd);
3291 : 10 : appendStringInfoString(&cmd,
3292 : : "SELECT DISTINCT P.pubname AS pubname\n"
3293 : : "FROM pg_publication P,\n"
3294 : : " LATERAL pg_get_publication_sequences(P.pubname) GPS\n"
3295 : : " JOIN pg_subscription_rel PS ON (GPS.relid = PS.srrelid),\n"
3296 : : " pg_class C JOIN pg_namespace N ON (N.oid = C.relnamespace)\n"
3297 : : "WHERE C.oid = GPS.relid AND P.pubname IN (");
3298 : :
3299 : 10 : GetPublicationsStr(publications, &cmd, true);
3300 : 10 : appendStringInfoString(&cmd, ")\n");
3301 : :
3302 : : /*
3303 : : * In case of ALTER SUBSCRIPTION ... REFRESH PUBLICATION,
3304 : : * subrel_local_oids contains the list of relations that are already
3305 : : * present on the subscriber. This check should be skipped as these will
3306 : : * not be re-synced.
3307 : : */
3308 [ - + ]: 10 : for (int i = 0; i < subrel_count; i++)
3309 : : {
3310 : 0 : Oid relid = subrel_local_oids[i];
3311 : 0 : char *schemaname = get_namespace_name(get_rel_namespace(relid));
3312 : 0 : char *seqname = get_rel_name(relid);
3313 : 0 : char *schemaname_lit = quote_literal_cstr(schemaname);
3314 : 0 : char *seqname_lit = quote_literal_cstr(seqname);
3315 : :
3316 : 0 : appendStringInfo(&cmd,
3317 : : "AND NOT (N.nspname = %s AND C.relname = %s)\n",
3318 : : schemaname_lit, seqname_lit);
3319 : :
3320 : 0 : pfree(schemaname_lit);
3321 : 0 : pfree(seqname_lit);
3322 : : }
3323 : :
3324 : 10 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
3325 : 10 : pfree(cmd.data);
3326 : :
3327 [ - + ]: 10 : if (res->status != WALRCV_OK_TUPLES)
3328 [ # # ]: 0 : ereport(ERROR,
3329 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3330 : : errmsg("could not receive list of replicated sequences from the publisher: %s",
3331 : : res->err)));
3332 : :
3333 : : /* Process publications. */
3334 : 10 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3335 [ - + ]: 10 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
3336 : : {
3337 : : char *pubname;
3338 : : bool isnull;
3339 : :
3340 : 0 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
3341 : : Assert(!isnull);
3342 : :
3343 : 0 : ExecClearTuple(slot);
3344 : 0 : publist = list_append_unique(publist, makeString(pubname));
3345 : : }
3346 : :
3347 : : /*
3348 : : * Log a warning if the publisher has subscribed to the same sequence from
3349 : : * some other publisher. We cannot know the origin of sequences data
3350 : : * during the initial sync.
3351 : : */
3352 [ - + ]: 10 : if (publist)
3353 : : {
3354 : : StringInfoData pubnames;
3355 : :
3356 : : /* Prepare the list of publication(s) for warning message. */
3357 : 0 : initStringInfo(&pubnames);
3358 : 0 : GetPublicationsStr(publist, &pubnames, false);
3359 : :
3360 [ # # ]: 0 : ereport(WARNING,
3361 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3362 : : errmsg("subscription \"%s\" requested origin = NONE but might synchronize sequence values that had a different origin",
3363 : : subname),
3364 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains sequences that are synchronized from other subscriptions.",
3365 : : "The subscription subscribes to publications (%s) that contain sequences that are synchronized from other subscriptions.",
3366 : : list_length(publist), pubnames.data),
3367 : : errhint("Verify that the initial values copied from the publisher sequences did not come from other origins."));
3368 : : }
3369 : :
3370 : 10 : ExecDropSingleTupleTableSlot(slot);
3371 : :
3372 : 10 : walrcv_clear_result(res);
3373 : : }
3374 : :
3375 : : /*
3376 : : * Determine whether the retain_dead_tuples can be enabled based on the
3377 : : * publisher's status.
3378 : : *
3379 : : * This option is disallowed if the publisher is running a version earlier
3380 : : * than the PG19, or if the publisher is in recovery (i.e., it is a standby
3381 : : * server).
3382 : : *
3383 : : * This is used both at DDL time (as a convenience, when a connection to the
3384 : : * publisher is already being made) and by the apply worker when it connects,
3385 : : * which is the authoritative check because the publisher's version and
3386 : : * recovery status can change after the DDL command.
3387 : : *
3388 : : * See comments atop worker.c for a detailed explanation.
3389 : : */
3390 : : void
3391 : 19 : CheckPubDeadTupleRetention(WalReceiverConn *wrconn)
3392 : : {
3393 : : WalRcvExecResult *res;
3394 : 19 : Oid RecoveryRow[1] = {BOOLOID};
3395 : : TupleTableSlot *slot;
3396 : : bool isnull;
3397 : : bool remote_in_recovery;
3398 : :
3399 [ - + ]: 19 : if (walrcv_server_version(wrconn) < 190000)
3400 [ # # ]: 0 : ereport(ERROR,
3401 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3402 : : errmsg("cannot enable retain_dead_tuples if the publisher is running a version earlier than PostgreSQL 19"));
3403 : :
3404 : 19 : res = walrcv_exec(wrconn, "SELECT pg_is_in_recovery()", 1, RecoveryRow);
3405 : :
3406 [ - + ]: 19 : if (res->status != WALRCV_OK_TUPLES)
3407 [ # # ]: 0 : ereport(ERROR,
3408 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3409 : : errmsg("could not obtain recovery progress from the publisher: %s",
3410 : : res->err)));
3411 : :
3412 : 19 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3413 [ - + ]: 19 : if (!tuplestore_gettupleslot(res->tuplestore, true, false, slot))
3414 [ # # ]: 0 : elog(ERROR, "failed to fetch tuple for the recovery progress");
3415 : :
3416 : 19 : remote_in_recovery = DatumGetBool(slot_getattr(slot, 1, &isnull));
3417 : :
3418 [ - + ]: 19 : if (remote_in_recovery)
3419 [ # # ]: 0 : ereport(ERROR,
3420 : : errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
3421 : : errmsg("cannot enable retain_dead_tuples if the publisher is in recovery"));
3422 : :
3423 : 19 : ExecDropSingleTupleTableSlot(slot);
3424 : :
3425 : 19 : walrcv_clear_result(res);
3426 : 19 : }
3427 : :
3428 : : /*
3429 : : * Check if the subscriber's configuration is adequate to enable the
3430 : : * retain_dead_tuples option.
3431 : : *
3432 : : * Issue an ERROR if the wal_level does not support the use of replication
3433 : : * slots when check_guc is set to true.
3434 : : *
3435 : : * Issue a WARNING if track_commit_timestamp is not enabled when check_guc is
3436 : : * set to true. This is only to highlight the importance of enabling
3437 : : * track_commit_timestamp instead of catching all the misconfigurations, as
3438 : : * this setting can be adjusted after subscription creation. Without it, the
3439 : : * apply worker will simply skip conflict detection.
3440 : : *
3441 : : * Issue a WARNING or NOTICE if the subscription is disabled and the retention
3442 : : * is active. Do not raise an ERROR since users can only modify
3443 : : * retain_dead_tuples for disabled subscriptions. And as long as the
3444 : : * subscription is enabled promptly, it will not pose issues.
3445 : : *
3446 : : * Issue a NOTICE to inform users that max_retention_duration is
3447 : : * ineffective when retain_dead_tuples is disabled for a subscription. An ERROR
3448 : : * is not issued because setting max_retention_duration causes no harm,
3449 : : * even when it is ineffective.
3450 : : */
3451 : : void
3452 : 336 : CheckSubDeadTupleRetention(bool check_guc, bool sub_disabled,
3453 : : int elevel_for_sub_disabled,
3454 : : bool retain_dead_tuples, bool retention_active,
3455 : : bool max_retention_set)
3456 : : {
3457 : : Assert(elevel_for_sub_disabled == NOTICE ||
3458 : : elevel_for_sub_disabled == WARNING);
3459 : :
3460 [ + + ]: 336 : if (retain_dead_tuples)
3461 : : {
3462 [ + + - + ]: 17 : if (check_guc && wal_level < WAL_LEVEL_REPLICA)
3463 [ # # ]: 0 : ereport(ERROR,
3464 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
3465 : : errmsg("\"wal_level\" is insufficient to create the replication slot required by retain_dead_tuples"),
3466 : : errhint("\"wal_level\" must be set to \"replica\" or \"logical\" at server start."));
3467 : :
3468 [ + + + + ]: 17 : if (check_guc && !track_commit_timestamp)
3469 [ + - ]: 4 : ereport(WARNING,
3470 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
3471 : : errmsg("commit timestamp and origin data required for detecting conflicts won't be retained"),
3472 : : errhint("Consider setting \"%s\" to true.",
3473 : : "track_commit_timestamp"));
3474 : :
3475 [ + + + - ]: 17 : if (sub_disabled && retention_active)
3476 [ + - + + ]: 7 : ereport(elevel_for_sub_disabled,
3477 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
3478 : : errmsg("deleted rows to detect conflicts would not be removed until the subscription is enabled"),
3479 : : (elevel_for_sub_disabled > NOTICE)
3480 : : ? errhint("Consider setting %s to false.",
3481 : : "retain_dead_tuples") : 0);
3482 : : }
3483 [ + + ]: 319 : else if (max_retention_set)
3484 : : {
3485 [ + - ]: 4 : ereport(NOTICE,
3486 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
3487 : : errmsg("max_retention_duration is ineffective when retain_dead_tuples is disabled"));
3488 : : }
3489 : 336 : }
3490 : :
3491 : : /*
3492 : : * Return true iff 'rv' is a member of the list.
3493 : : */
3494 : : static bool
3495 : 287 : list_member_rangevar(const List *list, RangeVar *rv)
3496 : : {
3497 [ + + + + : 1044 : foreach_ptr(PublicationRelKind, relinfo, list)
+ + ]
3498 : : {
3499 [ + + ]: 472 : if (equal(relinfo->rv, rv))
3500 : 1 : return true;
3501 : : }
3502 : :
3503 : 286 : return false;
3504 : : }
3505 : :
3506 : : /*
3507 : : * Get the list of tables and sequences which belong to specified publications
3508 : : * on the publisher connection.
3509 : : *
3510 : : * Note that we don't support the case where the column list is different for
3511 : : * the same table in different publications to avoid sending unwanted column
3512 : : * information for some of the rows. This can happen when both the column
3513 : : * list and row filter are specified for different publications.
3514 : : */
3515 : : static List *
3516 : 164 : fetch_relation_list(WalReceiverConn *wrconn, List *publications)
3517 : : {
3518 : : WalRcvExecResult *res;
3519 : : StringInfoData cmd;
3520 : : TupleTableSlot *slot;
3521 : 164 : Oid tableRow[4] = {TEXTOID, TEXTOID, CHAROID, InvalidOid};
3522 : 164 : List *relationlist = NIL;
3523 : 164 : int server_version = walrcv_server_version(wrconn);
3524 : 164 : bool check_columnlist = (server_version >= 150000);
3525 [ + - ]: 164 : int column_count = check_columnlist ? 4 : 3;
3526 : : StringInfoData pub_names;
3527 : :
3528 : 164 : initStringInfo(&cmd);
3529 : 164 : initStringInfo(&pub_names);
3530 : :
3531 : : /* Build the pub_names comma-separated string. */
3532 : 164 : GetPublicationsStr(publications, &pub_names, true);
3533 : :
3534 : : /* Get the list of relations from the publisher */
3535 [ + - ]: 164 : if (server_version >= 160000)
3536 : : {
3537 : 164 : tableRow[3] = INT2VECTOROID;
3538 : :
3539 : : /*
3540 : : * From version 16, we allowed passing multiple publications to the
3541 : : * function pg_get_publication_tables. This helped to filter out the
3542 : : * partition table whose ancestor is also published in this
3543 : : * publication array.
3544 : : *
3545 : : * Join pg_get_publication_tables with pg_publication to exclude
3546 : : * non-existing publications.
3547 : : *
3548 : : * Note that attrs are always stored in sorted order so we don't need
3549 : : * to worry if different publications have specified them in a
3550 : : * different order. See pub_collist_validate.
3551 : : */
3552 : 164 : appendStringInfo(&cmd, "SELECT DISTINCT n.nspname, c.relname, c.relkind, gpt.attrs\n"
3553 : : " FROM pg_class c\n"
3554 : : " JOIN pg_namespace n ON n.oid = c.relnamespace\n"
3555 : : " JOIN ( SELECT (pg_get_publication_tables(VARIADIC array_agg(pubname::text))).*\n"
3556 : : " FROM pg_publication\n"
3557 : : " WHERE pubname IN ( %s )) AS gpt\n"
3558 : : " ON gpt.relid = c.oid\n",
3559 : : pub_names.data);
3560 : :
3561 : : /* From version 19, inclusion of sequences in the target is supported */
3562 [ + - ]: 164 : if (server_version >= 190000)
3563 : 164 : appendStringInfo(&cmd,
3564 : : "UNION ALL\n"
3565 : : " SELECT DISTINCT s.schemaname, s.sequencename, " CppAsString2(RELKIND_SEQUENCE) "::\"char\" AS relkind, NULL::int2vector AS attrs\n"
3566 : : " FROM pg_catalog.pg_publication_sequences s\n"
3567 : : " WHERE s.pubname IN ( %s )",
3568 : : pub_names.data);
3569 : : }
3570 : : else
3571 : : {
3572 : 0 : tableRow[3] = NAMEARRAYOID;
3573 : 0 : appendStringInfoString(&cmd, "SELECT DISTINCT t.schemaname, t.tablename, " CppAsString2(RELKIND_RELATION) "::\"char\" AS relkind \n");
3574 : :
3575 : : /* Get column lists for each relation if the publisher supports it */
3576 [ # # ]: 0 : if (check_columnlist)
3577 : 0 : appendStringInfoString(&cmd, ", t.attnames\n");
3578 : :
3579 : 0 : appendStringInfo(&cmd, "FROM pg_catalog.pg_publication_tables t\n"
3580 : : " WHERE t.pubname IN ( %s )",
3581 : : pub_names.data);
3582 : : }
3583 : :
3584 : 164 : pfree(pub_names.data);
3585 : :
3586 : 164 : res = walrcv_exec(wrconn, cmd.data, column_count, tableRow);
3587 : 164 : pfree(cmd.data);
3588 : :
3589 [ - + ]: 164 : if (res->status != WALRCV_OK_TUPLES)
3590 [ # # ]: 0 : ereport(ERROR,
3591 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3592 : : errmsg("could not receive list of replicated tables from the publisher: %s",
3593 : : res->err)));
3594 : :
3595 : : /* Process tables. */
3596 : 164 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3597 [ + + ]: 467 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
3598 : : {
3599 : : char *nspname;
3600 : : char *relname;
3601 : : bool isnull;
3602 : : char relkind;
3603 : 304 : PublicationRelKind *relinfo = palloc_object(PublicationRelKind);
3604 : :
3605 : 304 : nspname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
3606 : : Assert(!isnull);
3607 : 304 : relname = TextDatumGetCString(slot_getattr(slot, 2, &isnull));
3608 : : Assert(!isnull);
3609 : 304 : relkind = DatumGetChar(slot_getattr(slot, 3, &isnull));
3610 : : Assert(!isnull);
3611 : :
3612 : 304 : relinfo->rv = makeRangeVar(nspname, relname, -1);
3613 : 304 : relinfo->relkind = relkind;
3614 : :
3615 [ + + + - ]: 304 : if (relkind != RELKIND_SEQUENCE &&
3616 [ + + ]: 287 : check_columnlist &&
3617 : 287 : list_member_rangevar(relationlist, relinfo->rv))
3618 [ + - ]: 1 : ereport(ERROR,
3619 : : errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
3620 : : errmsg("cannot use different column lists for table \"%s.%s\" in different publications",
3621 : : nspname, relname));
3622 : : else
3623 : 303 : relationlist = lappend(relationlist, relinfo);
3624 : :
3625 : 303 : ExecClearTuple(slot);
3626 : : }
3627 : 163 : ExecDropSingleTupleTableSlot(slot);
3628 : :
3629 : 163 : walrcv_clear_result(res);
3630 : :
3631 : 163 : return relationlist;
3632 : : }
3633 : :
3634 : : /*
3635 : : * This is to report the connection failure while dropping replication slots.
3636 : : * Here, we report the WARNING for all tablesync slots so that user can drop
3637 : : * them manually, if required.
3638 : : */
3639 : : static void
3640 : 4 : ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err)
3641 : : {
3642 : : ListCell *lc;
3643 : :
3644 [ - + - - : 4 : foreach(lc, rstates)
- + ]
3645 : : {
3646 : 0 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
3647 : 0 : Oid relid = rstate->relid;
3648 : :
3649 : : /* Only cleanup resources of tablesync workers */
3650 [ # # ]: 0 : if (!OidIsValid(relid))
3651 : 0 : continue;
3652 : :
3653 : : /*
3654 : : * Caller needs to ensure that relstate doesn't change underneath us.
3655 : : * See DropSubscription where we get the relstates.
3656 : : */
3657 [ # # ]: 0 : if (rstate->state != SUBREL_STATE_SYNCDONE)
3658 : : {
3659 : 0 : char syncslotname[NAMEDATALEN] = {0};
3660 : :
3661 : 0 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
3662 : : sizeof(syncslotname));
3663 [ # # ]: 0 : elog(WARNING, "could not drop tablesync replication slot \"%s\"",
3664 : : syncslotname);
3665 : : }
3666 : : }
3667 : :
3668 [ + - ]: 4 : ereport(ERROR,
3669 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3670 : : errmsg("could not connect to publisher when attempting to drop replication slot \"%s\": %s",
3671 : : slotname, err),
3672 : : /* translator: %s is an SQL ALTER command */
3673 : : errhint("Use %s to disable the subscription, and then use %s to disassociate it from the slot.",
3674 : : "ALTER SUBSCRIPTION ... DISABLE",
3675 : : "ALTER SUBSCRIPTION ... SET (slot_name = NONE)")));
3676 : : }
3677 : :
3678 : : /*
3679 : : * Check for duplicates in the given list of publications and error out if
3680 : : * found one. Add publications to datums as text datums, if datums is not
3681 : : * NULL.
3682 : : */
3683 : : static void
3684 : 290 : check_duplicates_in_publist(List *publist, Datum *datums)
3685 : : {
3686 : : ListCell *cell;
3687 : 290 : int j = 0;
3688 : :
3689 [ + - + + : 654 : foreach(cell, publist)
+ + ]
3690 : : {
3691 : 376 : char *name = strVal(lfirst(cell));
3692 : : ListCell *pcell;
3693 : :
3694 [ + - + - : 539 : foreach(pcell, publist)
+ - ]
3695 : : {
3696 : 539 : char *pname = strVal(lfirst(pcell));
3697 : :
3698 [ + + ]: 539 : if (pcell == cell)
3699 : 364 : break;
3700 : :
3701 [ + + ]: 175 : if (strcmp(name, pname) == 0)
3702 [ + - ]: 12 : ereport(ERROR,
3703 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
3704 : : errmsg("publication name \"%s\" used more than once",
3705 : : pname)));
3706 : : }
3707 : :
3708 [ + + ]: 364 : if (datums)
3709 : 308 : datums[j++] = CStringGetTextDatum(name);
3710 : : }
3711 : 278 : }
3712 : :
3713 : : /*
3714 : : * Merge current subscription's publications and user-specified publications
3715 : : * from ADD/DROP PUBLICATIONS.
3716 : : *
3717 : : * If addpub is true, we will add the list of publications into oldpublist.
3718 : : * Otherwise, we will delete the list of publications from oldpublist. The
3719 : : * returned list is a copy, oldpublist itself is not changed.
3720 : : *
3721 : : * subname is the subscription name, for error messages.
3722 : : */
3723 : : static List *
3724 : 35 : merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname)
3725 : : {
3726 : : ListCell *lc;
3727 : :
3728 : 35 : oldpublist = list_copy(oldpublist);
3729 : :
3730 : 35 : check_duplicates_in_publist(newpublist, NULL);
3731 : :
3732 [ + - + + : 59 : foreach(lc, newpublist)
+ + ]
3733 : : {
3734 : 44 : char *name = strVal(lfirst(lc));
3735 : : ListCell *lc2;
3736 : 44 : bool found = false;
3737 : :
3738 [ + - + + : 86 : foreach(lc2, oldpublist)
+ + ]
3739 : : {
3740 : 71 : char *pubname = strVal(lfirst(lc2));
3741 : :
3742 [ + + ]: 71 : if (strcmp(name, pubname) == 0)
3743 : : {
3744 : 29 : found = true;
3745 [ + + ]: 29 : if (addpub)
3746 [ + - ]: 8 : ereport(ERROR,
3747 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
3748 : : errmsg("publication \"%s\" is already in subscription \"%s\"",
3749 : : name, subname)));
3750 : : else
3751 : 21 : oldpublist = foreach_delete_current(oldpublist, lc2);
3752 : :
3753 : 21 : break;
3754 : : }
3755 : : }
3756 : :
3757 [ + + + - ]: 36 : if (addpub && !found)
3758 : 11 : oldpublist = lappend(oldpublist, makeString(name));
3759 [ + - + + ]: 25 : else if (!addpub && !found)
3760 [ + - ]: 4 : ereport(ERROR,
3761 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
3762 : : errmsg("publication \"%s\" is not in subscription \"%s\"",
3763 : : name, subname)));
3764 : : }
3765 : :
3766 : : /*
3767 : : * XXX Probably no strong reason for this, but for now it's to make ALTER
3768 : : * SUBSCRIPTION ... DROP PUBLICATION consistent with SET PUBLICATION.
3769 : : */
3770 [ + + ]: 15 : if (!oldpublist)
3771 [ + - ]: 4 : ereport(ERROR,
3772 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
3773 : : errmsg("cannot drop all the publications from a subscription")));
3774 : :
3775 : 11 : return oldpublist;
3776 : : }
3777 : :
3778 : : /*
3779 : : * Extract the streaming mode value from a DefElem. This is like
3780 : : * defGetBoolean() but also accepts the special value of "parallel".
3781 : : */
3782 : : char
3783 : 478 : defGetStreamingMode(DefElem *def)
3784 : : {
3785 : : /*
3786 : : * If no parameter value given, assume "true" is meant.
3787 : : */
3788 [ - + ]: 478 : if (!def->arg)
3789 : 0 : return LOGICALREP_STREAM_ON;
3790 : :
3791 : : /*
3792 : : * Allow 0, 1, "false", "true", "off", "on" or "parallel".
3793 : : */
3794 [ - + ]: 478 : switch (nodeTag(def->arg))
3795 : : {
3796 : 0 : case T_Integer:
3797 [ # # # ]: 0 : switch (intVal(def->arg))
3798 : : {
3799 : 0 : case 0:
3800 : 0 : return LOGICALREP_STREAM_OFF;
3801 : 0 : case 1:
3802 : 0 : return LOGICALREP_STREAM_ON;
3803 : 0 : default:
3804 : : /* otherwise, error out below */
3805 : 0 : break;
3806 : : }
3807 : 0 : break;
3808 : 478 : default:
3809 : : {
3810 : 478 : char *sval = defGetString(def);
3811 : :
3812 : : /*
3813 : : * The set of strings accepted here should match up with the
3814 : : * grammar's opt_boolean_or_string production.
3815 : : */
3816 [ + + + + ]: 952 : if (pg_strcasecmp(sval, "false") == 0 ||
3817 : 474 : pg_strcasecmp(sval, "off") == 0)
3818 : 7 : return LOGICALREP_STREAM_OFF;
3819 [ + + + + ]: 930 : if (pg_strcasecmp(sval, "true") == 0 ||
3820 : 459 : pg_strcasecmp(sval, "on") == 0)
3821 : 48 : return LOGICALREP_STREAM_ON;
3822 [ + + ]: 423 : if (pg_strcasecmp(sval, "parallel") == 0)
3823 : 419 : return LOGICALREP_STREAM_PARALLEL;
3824 : : }
3825 : 4 : break;
3826 : : }
3827 : :
3828 [ + - ]: 4 : ereport(ERROR,
3829 : : (errcode(ERRCODE_SYNTAX_ERROR),
3830 : : errmsg("%s requires a Boolean value or \"parallel\"",
3831 : : def->defname)));
3832 : : return LOGICALREP_STREAM_OFF; /* keep compiler quiet */
3833 : : }
|
