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