Age Owner Branch data TLA Line data Source code
1 : : /*-------------------------------------------------------------------------
2 : : *
3 : : * subscriptioncmds.c
4 : : * subscription catalog manipulation functions
5 : : *
6 : : * Portions Copyright (c) 1996-2025, 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_subscription.h"
31 : : #include "catalog/pg_subscription_rel.h"
32 : : #include "catalog/pg_type.h"
33 : : #include "commands/defrem.h"
34 : : #include "commands/event_trigger.h"
35 : : #include "commands/subscriptioncmds.h"
36 : : #include "executor/executor.h"
37 : : #include "miscadmin.h"
38 : : #include "nodes/makefuncs.h"
39 : : #include "pgstat.h"
40 : : #include "replication/logicallauncher.h"
41 : : #include "replication/logicalworker.h"
42 : : #include "replication/origin.h"
43 : : #include "replication/slot.h"
44 : : #include "replication/walreceiver.h"
45 : : #include "replication/walsender.h"
46 : : #include "replication/worker_internal.h"
47 : : #include "storage/lmgr.h"
48 : : #include "utils/acl.h"
49 : : #include "utils/builtins.h"
50 : : #include "utils/guc.h"
51 : : #include "utils/lsyscache.h"
52 : : #include "utils/memutils.h"
53 : : #include "utils/pg_lsn.h"
54 : : #include "utils/syscache.h"
55 : :
56 : : /*
57 : : * Options that can be specified by the user in CREATE/ALTER SUBSCRIPTION
58 : : * command.
59 : : */
60 : : #define SUBOPT_CONNECT 0x00000001
61 : : #define SUBOPT_ENABLED 0x00000002
62 : : #define SUBOPT_CREATE_SLOT 0x00000004
63 : : #define SUBOPT_SLOT_NAME 0x00000008
64 : : #define SUBOPT_COPY_DATA 0x00000010
65 : : #define SUBOPT_SYNCHRONOUS_COMMIT 0x00000020
66 : : #define SUBOPT_REFRESH 0x00000040
67 : : #define SUBOPT_BINARY 0x00000080
68 : : #define SUBOPT_STREAMING 0x00000100
69 : : #define SUBOPT_TWOPHASE_COMMIT 0x00000200
70 : : #define SUBOPT_DISABLE_ON_ERR 0x00000400
71 : : #define SUBOPT_PASSWORD_REQUIRED 0x00000800
72 : : #define SUBOPT_RUN_AS_OWNER 0x00001000
73 : : #define SUBOPT_FAILOVER 0x00002000
74 : : #define SUBOPT_RETAIN_DEAD_TUPLES 0x00004000
75 : : #define SUBOPT_MAX_RETENTION_DURATION 0x00008000
76 : : #define SUBOPT_LSN 0x00010000
77 : : #define SUBOPT_ORIGIN 0x00020000
78 : :
79 : : /* check if the 'val' has 'bits' set */
80 : : #define IsSet(val, bits) (((val) & (bits)) == (bits))
81 : :
82 : : /*
83 : : * Structure to hold a bitmap representing the user-provided CREATE/ALTER
84 : : * SUBSCRIPTION command options and the parsed/default values of each of them.
85 : : */
86 : : typedef struct SubOpts
87 : : {
88 : : bits32 specified_opts;
89 : : char *slot_name;
90 : : char *synchronous_commit;
91 : : bool connect;
92 : : bool enabled;
93 : : bool create_slot;
94 : : bool copy_data;
95 : : bool refresh;
96 : : bool binary;
97 : : char streaming;
98 : : bool twophase;
99 : : bool disableonerr;
100 : : bool passwordrequired;
101 : : bool runasowner;
102 : : bool failover;
103 : : bool retaindeadtuples;
104 : : int32 maxretention;
105 : : char *origin;
106 : : XLogRecPtr lsn;
107 : : } SubOpts;
108 : :
109 : : /*
110 : : * PublicationRelKind represents a relation included in a publication.
111 : : * It stores the schema-qualified relation name (rv) and its kind (relkind).
112 : : */
113 : : typedef struct PublicationRelKind
114 : : {
115 : : RangeVar *rv;
116 : : char relkind;
117 : : } PublicationRelKind;
118 : :
119 : : static List *fetch_relation_list(WalReceiverConn *wrconn, List *publications);
120 : : static void check_publications_origin_tables(WalReceiverConn *wrconn,
121 : : List *publications, bool copydata,
122 : : bool retain_dead_tuples,
123 : : char *origin,
124 : : Oid *subrel_local_oids,
125 : : int subrel_count, char *subname);
126 : : static void check_publications_origin_sequences(WalReceiverConn *wrconn,
127 : : List *publications,
128 : : bool copydata, char *origin,
129 : : Oid *subrel_local_oids,
130 : : int subrel_count,
131 : : char *subname);
132 : : static void check_pub_dead_tuple_retention(WalReceiverConn *wrconn);
133 : : static void check_duplicates_in_publist(List *publist, Datum *datums);
134 : : static List *merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname);
135 : : static void ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err);
136 : : static void CheckAlterSubOption(Subscription *sub, const char *option,
137 : : bool slot_needs_update, bool isTopLevel);
138 : :
139 : :
140 : : /*
141 : : * Common option parsing function for CREATE and ALTER SUBSCRIPTION commands.
142 : : *
143 : : * Since not all options can be specified in both commands, this function
144 : : * will report an error if mutually exclusive options are specified.
145 : : */
146 : : static void
1565 dean.a.rasheed@gmail 147 :CBC 482 : parse_subscription_options(ParseState *pstate, List *stmt_options,
148 : : bits32 supported_opts, SubOpts *opts)
149 : : {
150 : : ListCell *lc;
151 : :
152 : : /* Start out with cleared opts. */
1419 michael@paquier.xyz 153 : 482 : memset(opts, 0, sizeof(SubOpts));
154 : :
155 : : /* caller must expect some option */
1574 akapila@postgresql.o 156 [ - + ]: 482 : Assert(supported_opts != 0);
157 : :
158 : : /* If connect option is supported, these others also need to be. */
159 [ + + - + ]: 482 : Assert(!IsSet(supported_opts, SUBOPT_CONNECT) ||
160 : : IsSet(supported_opts, SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
161 : : SUBOPT_COPY_DATA));
162 : :
163 : : /* Set default values for the supported options. */
164 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_CONNECT))
165 : 240 : opts->connect = true;
166 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_ENABLED))
167 : 290 : opts->enabled = true;
168 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_CREATE_SLOT))
169 : 240 : opts->create_slot = true;
170 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_COPY_DATA))
171 : 311 : opts->copy_data = true;
172 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_REFRESH))
173 : 43 : opts->refresh = true;
174 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_BINARY))
175 : 349 : opts->binary = false;
176 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_STREAMING))
364 177 : 349 : opts->streaming = LOGICALREP_STREAM_PARALLEL;
1566 178 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT))
179 : 349 : opts->twophase = false;
1323 180 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR))
181 : 349 : opts->disableonerr = false;
942 rhaas@postgresql.org 182 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED))
183 : 349 : opts->passwordrequired = true;
937 184 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER))
185 : 349 : opts->runasowner = false;
636 akapila@postgresql.o 186 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_FAILOVER))
187 : 349 : opts->failover = false;
96 akapila@postgresql.o 188 [ + + ]:GNC 482 : if (IsSet(supported_opts, SUBOPT_RETAIN_DEAD_TUPLES))
189 : 349 : opts->retaindeadtuples = false;
55 190 [ + + ]: 482 : if (IsSet(supported_opts, SUBOPT_MAX_RETENTION_DURATION))
191 : 349 : opts->maxretention = 0;
1194 akapila@postgresql.o 192 [ + + ]:CBC 482 : if (IsSet(supported_opts, SUBOPT_ORIGIN))
193 : 349 : opts->origin = pstrdup(LOGICALREP_ORIGIN_ANY);
194 : :
195 : : /* Parse options */
1574 196 [ + + + + : 954 : foreach(lc, stmt_options)
+ + ]
197 : : {
3203 peter_e@gmx.net 198 : 505 : DefElem *defel = (DefElem *) lfirst(lc);
199 : :
1574 akapila@postgresql.o 200 [ + + ]: 505 : if (IsSet(supported_opts, SUBOPT_CONNECT) &&
201 [ + + ]: 295 : strcmp(defel->defname, "connect") == 0)
202 : : {
203 [ - + ]: 95 : if (IsSet(opts->specified_opts, SUBOPT_CONNECT))
1565 dean.a.rasheed@gmail 204 :UBC 0 : errorConflictingDefElem(defel, pstate);
205 : :
1574 akapila@postgresql.o 206 :CBC 95 : opts->specified_opts |= SUBOPT_CONNECT;
207 : 95 : opts->connect = defGetBoolean(defel);
208 : : }
209 [ + + ]: 410 : else if (IsSet(supported_opts, SUBOPT_ENABLED) &&
210 [ + + ]: 250 : strcmp(defel->defname, "enabled") == 0)
211 : : {
212 [ - + ]: 69 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
1565 dean.a.rasheed@gmail 213 :UBC 0 : errorConflictingDefElem(defel, pstate);
214 : :
1574 akapila@postgresql.o 215 :CBC 69 : opts->specified_opts |= SUBOPT_ENABLED;
216 : 69 : opts->enabled = defGetBoolean(defel);
217 : : }
218 [ + + ]: 341 : else if (IsSet(supported_opts, SUBOPT_CREATE_SLOT) &&
219 [ + + ]: 181 : strcmp(defel->defname, "create_slot") == 0)
220 : : {
221 [ - + ]: 20 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
1565 dean.a.rasheed@gmail 222 :UBC 0 : errorConflictingDefElem(defel, pstate);
223 : :
1574 akapila@postgresql.o 224 :CBC 20 : opts->specified_opts |= SUBOPT_CREATE_SLOT;
225 : 20 : opts->create_slot = defGetBoolean(defel);
226 : : }
227 [ + + ]: 321 : else if (IsSet(supported_opts, SUBOPT_SLOT_NAME) &&
228 [ + + ]: 272 : strcmp(defel->defname, "slot_name") == 0)
229 : : {
230 [ - + ]: 78 : if (IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
1565 dean.a.rasheed@gmail 231 :UBC 0 : errorConflictingDefElem(defel, pstate);
232 : :
1574 akapila@postgresql.o 233 :CBC 78 : opts->specified_opts |= SUBOPT_SLOT_NAME;
234 : 78 : opts->slot_name = defGetString(defel);
235 : :
236 : : /* Setting slot_name = NONE is treated as no slot name. */
237 [ + + ]: 153 : if (strcmp(opts->slot_name, "none") == 0)
238 : 61 : opts->slot_name = NULL;
239 : : else
96 akapila@postgresql.o 240 :GNC 17 : ReplicationSlotValidateName(opts->slot_name, false, ERROR);
241 : : }
1574 akapila@postgresql.o 242 [ + + ]:CBC 243 : else if (IsSet(supported_opts, SUBOPT_COPY_DATA) &&
243 [ + + ]: 159 : strcmp(defel->defname, "copy_data") == 0)
244 : : {
245 [ - + ]: 27 : if (IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
1565 dean.a.rasheed@gmail 246 :UBC 0 : errorConflictingDefElem(defel, pstate);
247 : :
1574 akapila@postgresql.o 248 :CBC 27 : opts->specified_opts |= SUBOPT_COPY_DATA;
249 : 27 : opts->copy_data = defGetBoolean(defel);
250 : : }
251 [ + + ]: 216 : else if (IsSet(supported_opts, SUBOPT_SYNCHRONOUS_COMMIT) &&
252 [ + + ]: 171 : strcmp(defel->defname, "synchronous_commit") == 0)
253 : : {
254 [ - + ]: 6 : if (IsSet(opts->specified_opts, SUBOPT_SYNCHRONOUS_COMMIT))
1565 dean.a.rasheed@gmail 255 :UBC 0 : errorConflictingDefElem(defel, pstate);
256 : :
1574 akapila@postgresql.o 257 :CBC 6 : opts->specified_opts |= SUBOPT_SYNCHRONOUS_COMMIT;
258 : 6 : opts->synchronous_commit = defGetString(defel);
259 : :
260 : : /* Test if the given value is valid for synchronous_commit GUC. */
261 : 6 : (void) set_config_option("synchronous_commit", opts->synchronous_commit,
262 : : PGC_BACKEND, PGC_S_TEST, GUC_ACTION_SET,
263 : : false, 0, false);
264 : : }
265 [ + + ]: 210 : else if (IsSet(supported_opts, SUBOPT_REFRESH) &&
266 [ + - ]: 33 : strcmp(defel->defname, "refresh") == 0)
267 : : {
268 [ - + ]: 33 : if (IsSet(opts->specified_opts, SUBOPT_REFRESH))
1565 dean.a.rasheed@gmail 269 :UBC 0 : errorConflictingDefElem(defel, pstate);
270 : :
1574 akapila@postgresql.o 271 :CBC 33 : opts->specified_opts |= SUBOPT_REFRESH;
272 : 33 : opts->refresh = defGetBoolean(defel);
273 : : }
274 [ + + ]: 177 : else if (IsSet(supported_opts, SUBOPT_BINARY) &&
275 [ + + ]: 165 : strcmp(defel->defname, "binary") == 0)
276 : : {
277 [ - + ]: 16 : if (IsSet(opts->specified_opts, SUBOPT_BINARY))
1565 dean.a.rasheed@gmail 278 :UBC 0 : errorConflictingDefElem(defel, pstate);
279 : :
1574 akapila@postgresql.o 280 :CBC 16 : opts->specified_opts |= SUBOPT_BINARY;
281 : 16 : opts->binary = defGetBoolean(defel);
282 : : }
283 [ + + ]: 161 : else if (IsSet(supported_opts, SUBOPT_STREAMING) &&
284 [ + + ]: 149 : strcmp(defel->defname, "streaming") == 0)
285 : : {
286 [ - + ]: 37 : if (IsSet(opts->specified_opts, SUBOPT_STREAMING))
1565 dean.a.rasheed@gmail 287 :UBC 0 : errorConflictingDefElem(defel, pstate);
288 : :
1574 akapila@postgresql.o 289 :CBC 37 : opts->specified_opts |= SUBOPT_STREAMING;
1022 290 : 37 : opts->streaming = defGetStreamingMode(defel);
291 : : }
460 292 [ + + ]: 124 : else if (IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT) &&
293 [ + + ]: 112 : strcmp(defel->defname, "two_phase") == 0)
294 : : {
1566 295 [ - + ]: 21 : if (IsSet(opts->specified_opts, SUBOPT_TWOPHASE_COMMIT))
1565 dean.a.rasheed@gmail 296 :UBC 0 : errorConflictingDefElem(defel, pstate);
297 : :
1566 akapila@postgresql.o 298 :CBC 21 : opts->specified_opts |= SUBOPT_TWOPHASE_COMMIT;
299 : 21 : opts->twophase = defGetBoolean(defel);
300 : : }
1323 301 [ + + ]: 103 : else if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR) &&
302 [ + + ]: 91 : strcmp(defel->defname, "disable_on_error") == 0)
303 : : {
304 [ - + ]: 10 : if (IsSet(opts->specified_opts, SUBOPT_DISABLE_ON_ERR))
1323 akapila@postgresql.o 305 :UBC 0 : errorConflictingDefElem(defel, pstate);
306 : :
1323 akapila@postgresql.o 307 :CBC 10 : opts->specified_opts |= SUBOPT_DISABLE_ON_ERR;
308 : 10 : opts->disableonerr = defGetBoolean(defel);
309 : : }
942 rhaas@postgresql.org 310 [ + + ]: 93 : else if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED) &&
311 [ + + ]: 81 : strcmp(defel->defname, "password_required") == 0)
312 : : {
313 [ - + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_PASSWORD_REQUIRED))
942 rhaas@postgresql.org 314 :UBC 0 : errorConflictingDefElem(defel, pstate);
315 : :
942 rhaas@postgresql.org 316 :CBC 12 : opts->specified_opts |= SUBOPT_PASSWORD_REQUIRED;
317 : 12 : opts->passwordrequired = defGetBoolean(defel);
318 : : }
937 319 [ + + ]: 81 : else if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER) &&
320 [ + + ]: 69 : strcmp(defel->defname, "run_as_owner") == 0)
321 : : {
322 [ - + ]: 9 : if (IsSet(opts->specified_opts, SUBOPT_RUN_AS_OWNER))
937 rhaas@postgresql.org 323 :UBC 0 : errorConflictingDefElem(defel, pstate);
324 : :
937 rhaas@postgresql.org 325 :CBC 9 : opts->specified_opts |= SUBOPT_RUN_AS_OWNER;
326 : 9 : opts->runasowner = defGetBoolean(defel);
327 : : }
636 akapila@postgresql.o 328 [ + + ]: 72 : else if (IsSet(supported_opts, SUBOPT_FAILOVER) &&
329 [ + + ]: 60 : strcmp(defel->defname, "failover") == 0)
330 : : {
331 [ - + ]: 13 : if (IsSet(opts->specified_opts, SUBOPT_FAILOVER))
636 akapila@postgresql.o 332 :UBC 0 : errorConflictingDefElem(defel, pstate);
333 : :
636 akapila@postgresql.o 334 :CBC 13 : opts->specified_opts |= SUBOPT_FAILOVER;
335 : 13 : opts->failover = defGetBoolean(defel);
336 : : }
96 akapila@postgresql.o 337 [ + + ]:GNC 59 : else if (IsSet(supported_opts, SUBOPT_RETAIN_DEAD_TUPLES) &&
338 [ + + ]: 47 : strcmp(defel->defname, "retain_dead_tuples") == 0)
339 : : {
340 [ - + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_RETAIN_DEAD_TUPLES))
96 akapila@postgresql.o 341 :UNC 0 : errorConflictingDefElem(defel, pstate);
342 : :
96 akapila@postgresql.o 343 :GNC 12 : opts->specified_opts |= SUBOPT_RETAIN_DEAD_TUPLES;
344 : 12 : opts->retaindeadtuples = defGetBoolean(defel);
345 : : }
55 346 [ + + ]: 47 : else if (IsSet(supported_opts, SUBOPT_MAX_RETENTION_DURATION) &&
347 [ + + ]: 35 : strcmp(defel->defname, "max_retention_duration") == 0)
348 : : {
349 [ - + ]: 11 : if (IsSet(opts->specified_opts, SUBOPT_MAX_RETENTION_DURATION))
55 akapila@postgresql.o 350 :UNC 0 : errorConflictingDefElem(defel, pstate);
351 : :
55 akapila@postgresql.o 352 :GNC 11 : opts->specified_opts |= SUBOPT_MAX_RETENTION_DURATION;
353 : 11 : opts->maxretention = defGetInt32(defel);
354 : : }
1194 akapila@postgresql.o 355 [ + + ]:CBC 36 : else if (IsSet(supported_opts, SUBOPT_ORIGIN) &&
356 [ + + ]: 24 : strcmp(defel->defname, "origin") == 0)
357 : : {
358 [ - + ]: 21 : if (IsSet(opts->specified_opts, SUBOPT_ORIGIN))
1194 akapila@postgresql.o 359 :UBC 0 : errorConflictingDefElem(defel, pstate);
360 : :
1194 akapila@postgresql.o 361 :CBC 21 : opts->specified_opts |= SUBOPT_ORIGIN;
362 : 21 : pfree(opts->origin);
363 : :
364 : : /*
365 : : * Even though the "origin" parameter allows only "none" and "any"
366 : : * values, it is implemented as a string type so that the
367 : : * parameter can be extended in future versions to support
368 : : * filtering using origin names specified by the user.
369 : : */
370 : 21 : opts->origin = defGetString(defel);
371 : :
372 [ + + + + ]: 29 : if ((pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_NONE) != 0) &&
373 : 8 : (pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_ANY) != 0))
374 [ + - ]: 3 : ereport(ERROR,
375 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
376 : : errmsg("unrecognized origin value: \"%s\"", opts->origin));
377 : : }
1315 378 [ + + ]: 15 : else if (IsSet(supported_opts, SUBOPT_LSN) &&
379 [ + - ]: 12 : strcmp(defel->defname, "lsn") == 0)
380 : 9 : {
381 : 12 : char *lsn_str = defGetString(defel);
382 : : XLogRecPtr lsn;
383 : :
384 [ - + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_LSN))
1315 akapila@postgresql.o 385 :UBC 0 : errorConflictingDefElem(defel, pstate);
386 : :
387 : : /* Setting lsn = NONE is treated as resetting LSN */
1315 akapila@postgresql.o 388 [ + + ]:CBC 12 : if (strcmp(lsn_str, "none") == 0)
389 : 3 : lsn = InvalidXLogRecPtr;
390 : : else
391 : : {
392 : : /* Parse the argument as LSN */
393 : 9 : lsn = DatumGetLSN(DirectFunctionCall1(pg_lsn_in,
394 : : CStringGetDatum(lsn_str)));
395 : :
396 [ + + ]: 9 : if (XLogRecPtrIsInvalid(lsn))
397 [ + - ]: 3 : ereport(ERROR,
398 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
399 : : errmsg("invalid WAL location (LSN): %s", lsn_str)));
400 : : }
401 : :
402 : 9 : opts->specified_opts |= SUBOPT_LSN;
403 : 9 : opts->lsn = lsn;
404 : : }
405 : : else
3085 peter_e@gmx.net 406 [ + - ]: 3 : ereport(ERROR,
407 : : (errcode(ERRCODE_SYNTAX_ERROR),
408 : : errmsg("unrecognized subscription parameter: \"%s\"", defel->defname)));
409 : : }
410 : :
411 : : /*
412 : : * We've been explicitly asked to not connect, that requires some
413 : : * additional processing.
414 : : */
1574 akapila@postgresql.o 415 [ + + + + ]: 449 : if (!opts->connect && IsSet(supported_opts, SUBOPT_CONNECT))
416 : : {
417 : : /* Check for incompatible options from the user. */
418 [ + - ]: 74 : if (opts->enabled &&
419 [ + + ]: 74 : IsSet(opts->specified_opts, SUBOPT_ENABLED))
3140 peter_e@gmx.net 420 [ + - ]: 3 : ereport(ERROR,
421 : : (errcode(ERRCODE_SYNTAX_ERROR),
422 : : /*- translator: both %s are strings of the form "option = value" */
423 : : errmsg("%s and %s are mutually exclusive options",
424 : : "connect = false", "enabled = true")));
425 : :
1574 akapila@postgresql.o 426 [ + + ]: 71 : if (opts->create_slot &&
427 [ + + ]: 68 : IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
3140 peter_e@gmx.net 428 [ + - ]: 3 : ereport(ERROR,
429 : : (errcode(ERRCODE_SYNTAX_ERROR),
430 : : errmsg("%s and %s are mutually exclusive options",
431 : : "connect = false", "create_slot = true")));
432 : :
1574 akapila@postgresql.o 433 [ + + ]: 68 : if (opts->copy_data &&
434 [ + + ]: 65 : IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
3140 peter_e@gmx.net 435 [ + - ]: 3 : ereport(ERROR,
436 : : (errcode(ERRCODE_SYNTAX_ERROR),
437 : : errmsg("%s and %s are mutually exclusive options",
438 : : "connect = false", "copy_data = true")));
439 : :
440 : : /* Change the defaults of other options. */
1574 akapila@postgresql.o 441 : 65 : opts->enabled = false;
442 : 65 : opts->create_slot = false;
443 : 65 : opts->copy_data = false;
444 : : }
445 : :
446 : : /*
447 : : * Do additional checking for disallowed combination when slot_name = NONE
448 : : * was used.
449 : : */
450 [ + + ]: 440 : if (!opts->slot_name &&
451 [ + + ]: 426 : IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
452 : : {
1419 michael@paquier.xyz 453 [ + + ]: 58 : if (opts->enabled)
454 : : {
455 [ + + ]: 9 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
456 [ + - ]: 3 : ereport(ERROR,
457 : : (errcode(ERRCODE_SYNTAX_ERROR),
458 : : /*- translator: both %s are strings of the form "option = value" */
459 : : errmsg("%s and %s are mutually exclusive options",
460 : : "slot_name = NONE", "enabled = true")));
461 : : else
462 [ + - ]: 6 : ereport(ERROR,
463 : : (errcode(ERRCODE_SYNTAX_ERROR),
464 : : /*- translator: both %s are strings of the form "option = value" */
465 : : errmsg("subscription with %s must also set %s",
466 : : "slot_name = NONE", "enabled = false")));
467 : : }
468 : :
469 [ + + ]: 49 : if (opts->create_slot)
470 : : {
471 [ + + ]: 6 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
472 [ + - ]: 3 : ereport(ERROR,
473 : : (errcode(ERRCODE_SYNTAX_ERROR),
474 : : /*- translator: both %s are strings of the form "option = value" */
475 : : errmsg("%s and %s are mutually exclusive options",
476 : : "slot_name = NONE", "create_slot = true")));
477 : : else
478 [ + - ]: 3 : ereport(ERROR,
479 : : (errcode(ERRCODE_SYNTAX_ERROR),
480 : : /*- translator: both %s are strings of the form "option = value" */
481 : : errmsg("subscription with %s must also set %s",
482 : : "slot_name = NONE", "create_slot = false")));
483 : : }
484 : : }
3203 peter_e@gmx.net 485 : 425 : }
486 : :
487 : : /*
488 : : * Check that the specified publications are present on the publisher.
489 : : */
490 : : static void
1306 akapila@postgresql.o 491 : 127 : check_publications(WalReceiverConn *wrconn, List *publications)
492 : : {
493 : : WalRcvExecResult *res;
494 : : StringInfo cmd;
495 : : TupleTableSlot *slot;
496 : 127 : List *publicationsCopy = NIL;
497 : 127 : Oid tableRow[1] = {TEXTOID};
498 : :
499 : 127 : cmd = makeStringInfo();
500 : 127 : appendStringInfoString(cmd, "SELECT t.pubname FROM\n"
501 : : " pg_catalog.pg_publication t WHERE\n"
502 : : " t.pubname IN (");
367 michael@paquier.xyz 503 : 127 : GetPublicationsStr(publications, cmd, true);
1306 akapila@postgresql.o 504 : 127 : appendStringInfoChar(cmd, ')');
505 : :
506 : 127 : res = walrcv_exec(wrconn, cmd->data, 1, tableRow);
590 dgustafsson@postgres 507 : 127 : destroyStringInfo(cmd);
508 : :
1306 akapila@postgresql.o 509 [ - + ]: 127 : if (res->status != WALRCV_OK_TUPLES)
1306 akapila@postgresql.o 510 [ # # ]:UBC 0 : ereport(ERROR,
511 : : errmsg("could not receive list of publications from the publisher: %s",
512 : : res->err));
513 : :
1306 akapila@postgresql.o 514 :CBC 127 : publicationsCopy = list_copy(publications);
515 : :
516 : : /* Process publication(s). */
517 : 127 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
518 [ + + ]: 280 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
519 : : {
520 : : char *pubname;
521 : : bool isnull;
522 : :
523 : 153 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
524 [ - + ]: 153 : Assert(!isnull);
525 : :
526 : : /* Delete the publication present in publisher from the list. */
527 : 153 : publicationsCopy = list_delete(publicationsCopy, makeString(pubname));
528 : 153 : ExecClearTuple(slot);
529 : : }
530 : :
531 : 127 : ExecDropSingleTupleTableSlot(slot);
532 : :
533 : 127 : walrcv_clear_result(res);
534 : :
535 [ + + ]: 127 : if (list_length(publicationsCopy))
536 : : {
537 : : /* Prepare the list of non-existent publication(s) for error message. */
538 : 4 : StringInfo pubnames = makeStringInfo();
539 : :
367 michael@paquier.xyz 540 : 4 : GetPublicationsStr(publicationsCopy, pubnames, false);
1306 akapila@postgresql.o 541 [ + - ]: 4 : ereport(WARNING,
542 : : errcode(ERRCODE_UNDEFINED_OBJECT),
543 : : errmsg_plural("publication %s does not exist on the publisher",
544 : : "publications %s do not exist on the publisher",
545 : : list_length(publicationsCopy),
546 : : pubnames->data));
547 : : }
548 : 127 : }
549 : :
550 : : /*
551 : : * Auxiliary function to build a text array out of a list of String nodes.
552 : : */
553 : : static Datum
3203 peter_e@gmx.net 554 : 196 : publicationListToArray(List *publist)
555 : : {
556 : : ArrayType *arr;
557 : : Datum *datums;
558 : : MemoryContext memcxt;
559 : : MemoryContext oldcxt;
560 : :
561 : : /* Create memory context for temporary allocations. */
562 : 196 : memcxt = AllocSetContextCreate(CurrentMemoryContext,
563 : : "publicationListToArray to array",
564 : : ALLOCSET_DEFAULT_SIZES);
565 : 196 : oldcxt = MemoryContextSwitchTo(memcxt);
566 : :
2956 tgl@sss.pgh.pa.us 567 : 196 : datums = (Datum *) palloc(sizeof(Datum) * list_length(publist));
568 : :
1665 peter@eisentraut.org 569 : 196 : check_duplicates_in_publist(publist, datums);
570 : :
3203 peter_e@gmx.net 571 : 193 : MemoryContextSwitchTo(oldcxt);
572 : :
1214 peter@eisentraut.org 573 : 193 : arr = construct_array_builtin(datums, list_length(publist), TEXTOID);
574 : :
3203 peter_e@gmx.net 575 : 193 : MemoryContextDelete(memcxt);
576 : :
577 : 193 : return PointerGetDatum(arr);
578 : : }
579 : :
580 : : /*
581 : : * Create new subscription.
582 : : */
583 : : ObjectAddress
1565 dean.a.rasheed@gmail 584 : 240 : CreateSubscription(ParseState *pstate, CreateSubscriptionStmt *stmt,
585 : : bool isTopLevel)
586 : : {
587 : : Relation rel;
588 : : ObjectAddress myself;
589 : : Oid subid;
590 : : bool nulls[Natts_pg_subscription];
591 : : Datum values[Natts_pg_subscription];
3202 alvherre@alvh.no-ip. 592 : 240 : Oid owner = GetUserId();
593 : : HeapTuple tup;
594 : : char *conninfo;
595 : : char originname[NAMEDATALEN];
596 : : List *publications;
597 : : bits32 supported_opts;
1574 akapila@postgresql.o 598 : 240 : SubOpts opts = {0};
599 : : AclResult aclresult;
600 : :
601 : : /*
602 : : * Parse and check options.
603 : : *
604 : : * Connection and publication should not be specified here.
605 : : */
606 : 240 : supported_opts = (SUBOPT_CONNECT | SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
607 : : SUBOPT_SLOT_NAME | SUBOPT_COPY_DATA |
608 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
609 : : SUBOPT_STREAMING | SUBOPT_TWOPHASE_COMMIT |
610 : : SUBOPT_DISABLE_ON_ERR | SUBOPT_PASSWORD_REQUIRED |
611 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER |
612 : : SUBOPT_RETAIN_DEAD_TUPLES |
613 : : SUBOPT_MAX_RETENTION_DURATION | SUBOPT_ORIGIN);
1565 dean.a.rasheed@gmail 614 : 240 : parse_subscription_options(pstate, stmt->options, supported_opts, &opts);
615 : :
616 : : /*
617 : : * Since creating a replication slot is not transactional, rolling back
618 : : * the transaction leaves the created replication slot. So we cannot run
619 : : * CREATE SUBSCRIPTION inside a transaction block if creating a
620 : : * replication slot.
621 : : */
1574 akapila@postgresql.o 622 [ + + ]: 195 : if (opts.create_slot)
2810 peter_e@gmx.net 623 : 125 : PreventInTransactionBlock(isTopLevel, "CREATE SUBSCRIPTION ... WITH (create_slot = true)");
624 : :
625 : : /*
626 : : * We don't want to allow unprivileged users to be able to trigger
627 : : * attempts to access arbitrary network destinations, so require the user
628 : : * to have been specifically authorized to create subscriptions.
629 : : */
942 rhaas@postgresql.org 630 [ + + ]: 192 : if (!has_privs_of_role(owner, ROLE_PG_CREATE_SUBSCRIPTION))
3203 peter_e@gmx.net 631 [ + - ]: 3 : ereport(ERROR,
632 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
633 : : errmsg("permission denied to create subscription"),
634 : : errdetail("Only roles with privileges of the \"%s\" role may create subscriptions.",
635 : : "pg_create_subscription")));
636 : :
637 : : /*
638 : : * Since a subscription is a database object, we also check for CREATE
639 : : * permission on the database.
640 : : */
942 rhaas@postgresql.org 641 : 189 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
642 : : owner, ACL_CREATE);
643 [ + + ]: 189 : if (aclresult != ACLCHECK_OK)
644 : 6 : aclcheck_error(aclresult, OBJECT_DATABASE,
645 : 3 : get_database_name(MyDatabaseId));
646 : :
647 : : /*
648 : : * Non-superusers are required to set a password for authentication, and
649 : : * that password must be used by the target server, but the superuser can
650 : : * exempt a subscription from this requirement.
651 : : */
652 [ + + + + ]: 186 : if (!opts.passwordrequired && !superuser_arg(owner))
892 tgl@sss.pgh.pa.us 653 [ + - ]: 3 : ereport(ERROR,
654 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
655 : : errmsg("password_required=false is superuser-only"),
656 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
657 : :
658 : : /*
659 : : * If built with appropriate switch, whine when regression-testing
660 : : * conventions for subscription names are violated.
661 : : */
662 : : #ifdef ENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS
663 : : if (strncmp(stmt->subname, "regress_", 8) != 0)
664 : : elog(WARNING, "subscriptions created by regression test cases should have names starting with \"regress_\"");
665 : : #endif
666 : :
2471 andres@anarazel.de 667 : 183 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
668 : :
669 : : /* Check if name is used */
2533 670 : 183 : subid = GetSysCacheOid2(SUBSCRIPTIONNAME, Anum_pg_subscription_oid,
671 : : ObjectIdGetDatum(MyDatabaseId), CStringGetDatum(stmt->subname));
3203 peter_e@gmx.net 672 [ + + ]: 183 : if (OidIsValid(subid))
673 : : {
674 [ + - ]: 3 : ereport(ERROR,
675 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
676 : : errmsg("subscription \"%s\" already exists",
677 : : stmt->subname)));
678 : : }
679 : :
680 : : /*
681 : : * Ensure that system configuration paramters are set appropriately to
682 : : * support retain_dead_tuples and max_retention_duration.
683 : : */
55 akapila@postgresql.o 684 :GNC 180 : CheckSubDeadTupleRetention(true, !opts.enabled, WARNING,
685 : 180 : opts.retaindeadtuples, opts.retaindeadtuples,
686 : 180 : (opts.maxretention > 0));
687 : :
1574 akapila@postgresql.o 688 [ + + ]:CBC 180 : if (!IsSet(opts.specified_opts, SUBOPT_SLOT_NAME) &&
689 [ + - ]: 159 : opts.slot_name == NULL)
690 : 159 : opts.slot_name = stmt->subname;
691 : :
692 : : /* The default for synchronous_commit of subscriptions is off. */
693 [ + - ]: 180 : if (opts.synchronous_commit == NULL)
694 : 180 : opts.synchronous_commit = "off";
695 : :
3203 peter_e@gmx.net 696 : 180 : conninfo = stmt->conninfo;
697 : 180 : publications = stmt->publication;
698 : :
699 : : /* Load the library providing us libpq calls. */
700 : 180 : load_file("libpqwalreceiver", false);
701 : :
702 : : /* Check the connection info string. */
942 rhaas@postgresql.org 703 [ + + + + ]: 180 : walrcv_check_conninfo(conninfo, opts.passwordrequired && !superuser());
704 : :
705 : : /* Everything ok, form a new tuple. */
3203 peter_e@gmx.net 706 : 171 : memset(values, 0, sizeof(values));
707 : 171 : memset(nulls, false, sizeof(nulls));
708 : :
2533 andres@anarazel.de 709 : 171 : subid = GetNewOidWithIndex(rel, SubscriptionObjectIndexId,
710 : : Anum_pg_subscription_oid);
711 : 171 : values[Anum_pg_subscription_oid - 1] = ObjectIdGetDatum(subid);
3203 peter_e@gmx.net 712 : 171 : values[Anum_pg_subscription_subdbid - 1] = ObjectIdGetDatum(MyDatabaseId);
1299 akapila@postgresql.o 713 : 171 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(InvalidXLogRecPtr);
3203 peter_e@gmx.net 714 : 171 : values[Anum_pg_subscription_subname - 1] =
715 : 171 : DirectFunctionCall1(namein, CStringGetDatum(stmt->subname));
3202 alvherre@alvh.no-ip. 716 : 171 : values[Anum_pg_subscription_subowner - 1] = ObjectIdGetDatum(owner);
1574 akapila@postgresql.o 717 : 171 : values[Anum_pg_subscription_subenabled - 1] = BoolGetDatum(opts.enabled);
718 : 171 : values[Anum_pg_subscription_subbinary - 1] = BoolGetDatum(opts.binary);
1022 719 : 171 : values[Anum_pg_subscription_substream - 1] = CharGetDatum(opts.streaming);
1566 720 : 171 : values[Anum_pg_subscription_subtwophasestate - 1] =
721 [ + + ]: 171 : CharGetDatum(opts.twophase ?
722 : : LOGICALREP_TWOPHASE_STATE_PENDING :
723 : : LOGICALREP_TWOPHASE_STATE_DISABLED);
1323 724 : 171 : values[Anum_pg_subscription_subdisableonerr - 1] = BoolGetDatum(opts.disableonerr);
942 rhaas@postgresql.org 725 : 171 : values[Anum_pg_subscription_subpasswordrequired - 1] = BoolGetDatum(opts.passwordrequired);
937 726 : 171 : values[Anum_pg_subscription_subrunasowner - 1] = BoolGetDatum(opts.runasowner);
636 akapila@postgresql.o 727 : 171 : values[Anum_pg_subscription_subfailover - 1] = BoolGetDatum(opts.failover);
96 akapila@postgresql.o 728 :GNC 171 : values[Anum_pg_subscription_subretaindeadtuples - 1] =
729 : 171 : BoolGetDatum(opts.retaindeadtuples);
55 730 : 171 : values[Anum_pg_subscription_submaxretention - 1] =
731 : 171 : Int32GetDatum(opts.maxretention);
732 : 171 : values[Anum_pg_subscription_subretentionactive - 1] =
733 : 171 : Int32GetDatum(opts.retaindeadtuples);
3203 peter_e@gmx.net 734 :CBC 171 : values[Anum_pg_subscription_subconninfo - 1] =
735 : 171 : CStringGetTextDatum(conninfo);
1574 akapila@postgresql.o 736 [ + + ]: 171 : if (opts.slot_name)
3093 peter_e@gmx.net 737 : 161 : values[Anum_pg_subscription_subslotname - 1] =
1574 akapila@postgresql.o 738 : 161 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
739 : : else
3093 peter_e@gmx.net 740 : 10 : nulls[Anum_pg_subscription_subslotname - 1] = true;
3118 741 : 171 : values[Anum_pg_subscription_subsynccommit - 1] =
1574 akapila@postgresql.o 742 : 171 : CStringGetTextDatum(opts.synchronous_commit);
3203 peter_e@gmx.net 743 : 168 : values[Anum_pg_subscription_subpublications - 1] =
3085 bruce@momjian.us 744 : 171 : publicationListToArray(publications);
1194 akapila@postgresql.o 745 : 168 : values[Anum_pg_subscription_suborigin - 1] =
746 : 168 : CStringGetTextDatum(opts.origin);
747 : :
3203 peter_e@gmx.net 748 : 168 : tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
749 : :
750 : : /* Insert tuple into catalog. */
2533 andres@anarazel.de 751 : 168 : CatalogTupleInsert(rel, tup);
3203 peter_e@gmx.net 752 : 168 : heap_freetuple(tup);
753 : :
3202 alvherre@alvh.no-ip. 754 : 168 : recordDependencyOnOwner(SubscriptionRelationId, subid, owner);
755 : :
756 : : /*
757 : : * A replication origin is currently created for all subscriptions,
758 : : * including those that only contain sequences or are otherwise empty.
759 : : *
760 : : * XXX: While this is technically unnecessary, optimizing it would require
761 : : * additional logic to skip origin creation during DDL operations and
762 : : * apply workers initialization, and to handle origin creation dynamically
763 : : * when tables are added to the subscription. It is not clear whether
764 : : * preventing creation of origins is worth additional complexity.
765 : : */
1112 akapila@postgresql.o 766 : 168 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
3203 peter_e@gmx.net 767 : 168 : replorigin_create(originname);
768 : :
769 : : /*
770 : : * Connect to remote side to execute requested commands and fetch table
771 : : * and sequence info.
772 : : */
1574 akapila@postgresql.o 773 [ + + ]: 168 : if (opts.connect)
774 : : {
775 : : char *err;
776 : : WalReceiverConn *wrconn;
777 : : bool must_use_password;
778 : :
779 : : /* Try to connect to the publisher. */
942 rhaas@postgresql.org 780 [ - + - - ]: 121 : must_use_password = !superuser_arg(owner) && opts.passwordrequired;
630 akapila@postgresql.o 781 : 121 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
782 : : stmt->subname, &err);
3203 peter_e@gmx.net 783 [ + + ]: 121 : if (!wrconn)
784 [ + - ]: 3 : ereport(ERROR,
785 : : (errcode(ERRCODE_CONNECTION_FAILURE),
786 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
787 : : stmt->subname, err)));
788 : :
3197 789 [ + + ]: 118 : PG_TRY();
790 : : {
4 akapila@postgresql.o 791 :GNC 118 : bool has_tables = false;
792 : : List *pubrels;
793 : : char relation_state;
794 : :
1306 akapila@postgresql.o 795 :CBC 118 : check_publications(wrconn, publications);
4 akapila@postgresql.o 796 :GNC 118 : check_publications_origin_tables(wrconn, publications,
797 : 118 : opts.copy_data,
798 : 118 : opts.retaindeadtuples, opts.origin,
799 : : NULL, 0, stmt->subname);
800 : 118 : check_publications_origin_sequences(wrconn, publications,
801 : 118 : opts.copy_data, opts.origin,
802 : : NULL, 0, stmt->subname);
803 : :
96 804 [ + + ]: 118 : if (opts.retaindeadtuples)
805 : 3 : check_pub_dead_tuple_retention(wrconn);
806 : :
807 : : /*
808 : : * Set sync state based on if we were asked to do data copy or
809 : : * not.
810 : : */
4 811 [ + + ]: 118 : relation_state = opts.copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY;
812 : :
813 : : /*
814 : : * Build local relation status info. Relations are for both tables
815 : : * and sequences from the publisher.
816 : : */
817 : 118 : pubrels = fetch_relation_list(wrconn, publications);
818 : :
819 [ + + + + : 413 : foreach_ptr(PublicationRelKind, pubrelinfo, pubrels)
+ + ]
820 : : {
821 : : Oid relid;
822 : : char relkind;
823 : 179 : RangeVar *rv = pubrelinfo->rv;
824 : :
3139 peter_e@gmx.net 825 :CBC 179 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
4 akapila@postgresql.o 826 :GNC 179 : relkind = get_rel_relkind(relid);
827 : :
828 : : /* Check for supported relkind. */
829 : 179 : CheckSubscriptionRelkind(relkind, pubrelinfo->relkind,
3086 peter_e@gmx.net 830 :CBC 179 : rv->schemaname, rv->relname);
4 akapila@postgresql.o 831 :GNC 179 : has_tables |= (relkind != RELKIND_SEQUENCE);
832 : 179 : AddSubscriptionRelState(subid, relid, relation_state,
833 : : InvalidXLogRecPtr, true);
834 : : }
835 : :
836 : : /*
837 : : * If requested, create permanent slot for the subscription. We
838 : : * won't use the initial snapshot for anything, so no need to
839 : : * export it.
840 : : *
841 : : * XXX: Similar to origins, it is not clear whether preventing the
842 : : * slot creation for empty and sequence-only subscriptions is
843 : : * worth additional complexity.
844 : : */
1574 akapila@postgresql.o 845 [ + + ]:CBC 117 : if (opts.create_slot)
846 : : {
1566 847 : 112 : bool twophase_enabled = false;
848 : :
1574 849 [ - + ]: 112 : Assert(opts.slot_name);
850 : :
851 : : /*
852 : : * Even if two_phase is set, don't create the slot with
853 : : * two-phase enabled. Will enable it once all the tables are
854 : : * synced and ready. This avoids race-conditions like prepared
855 : : * transactions being skipped due to changes not being applied
856 : : * due to checks in should_apply_changes_for_rel() when
857 : : * tablesync for the corresponding tables are in progress. See
858 : : * comments atop worker.c.
859 : : *
860 : : * Note that if tables were specified but copy_data is false
861 : : * then it is safe to enable two_phase up-front because those
862 : : * tables are already initially in READY state. When the
863 : : * subscription has no tables, we leave the twophase state as
864 : : * PENDING, to allow ALTER SUBSCRIPTION ... REFRESH
865 : : * PUBLICATION to work.
866 : : */
4 akapila@postgresql.o 867 [ + + + + :GNC 112 : if (opts.twophase && !opts.copy_data && has_tables)
+ - ]
1566 akapila@postgresql.o 868 :CBC 1 : twophase_enabled = true;
869 : :
870 : 112 : walrcv_create_slot(wrconn, opts.slot_name, false, twophase_enabled,
871 : : opts.failover, CRS_NOEXPORT_SNAPSHOT, NULL);
872 : :
873 [ + + ]: 112 : if (twophase_enabled)
874 : 1 : UpdateTwoPhaseState(subid, LOGICALREP_TWOPHASE_STATE_ENABLED);
875 : :
3111 peter_e@gmx.net 876 [ + - ]: 112 : ereport(NOTICE,
877 : : (errmsg("created replication slot \"%s\" on publisher",
878 : : opts.slot_name)));
879 : : }
880 : : }
2187 peter@eisentraut.org 881 : 1 : PG_FINALLY();
882 : : {
3197 peter_e@gmx.net 883 : 118 : walrcv_disconnect(wrconn);
884 : : }
885 [ + + ]: 118 : PG_END_TRY();
886 : : }
887 : : else
3140 888 [ + - ]: 47 : ereport(WARNING,
889 : : (errmsg("subscription was created, but is not connected"),
890 : : errhint("To initiate replication, you must manually create the replication slot, enable the subscription, and alter the subscription to refresh publications.")));
891 : :
2471 andres@anarazel.de 892 : 164 : table_close(rel, RowExclusiveLock);
893 : :
1300 894 : 164 : pgstat_create_subscription(subid);
895 : :
896 : : /*
897 : : * Notify the launcher to start the apply worker if the subscription is
898 : : * enabled, or to create the conflict detection slot if retain_dead_tuples
899 : : * is enabled.
900 : : *
901 : : * Creating the conflict detection slot is essential even when the
902 : : * subscription is not enabled. This ensures that dead tuples are
903 : : * retained, which is necessary for accurately identifying the type of
904 : : * conflict during replication.
905 : : */
49 akapila@postgresql.o 906 [ + + + + ]:GNC 164 : if (opts.enabled || opts.retaindeadtuples)
3101 peter_e@gmx.net 907 :CBC 112 : ApplyLauncherWakeupAtCommit();
908 : :
3203 909 : 164 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
910 : :
911 [ - + ]: 164 : InvokeObjectPostCreateHook(SubscriptionRelationId, subid, 0);
912 : :
913 : 164 : return myself;
914 : : }
915 : :
916 : : static void
1306 akapila@postgresql.o 917 : 35 : AlterSubscription_refresh(Subscription *sub, bool copy_data,
918 : : List *validate_publications)
919 : : {
920 : : char *err;
4 akapila@postgresql.o 921 :GNC 35 : List *pubrels = NIL;
922 : : Oid *pubrel_local_oids;
923 : : List *subrel_states;
924 : 35 : List *sub_remove_rels = NIL;
925 : : Oid *subrel_local_oids;
926 : : Oid *subseq_local_oids;
927 : : int subrel_count;
928 : : ListCell *lc;
929 : : int off;
930 : 35 : int tbl_count = 0;
931 : 35 : int seq_count = 0;
1718 akapila@postgresql.o 932 :CBC 35 : Relation rel = NULL;
933 : : typedef struct SubRemoveRels
934 : : {
935 : : Oid relid;
936 : : char state;
937 : : } SubRemoveRels;
938 : :
939 : : WalReceiverConn *wrconn;
940 : : bool must_use_password;
941 : :
942 : : /* Load the library providing us libpq calls. */
3140 peter_e@gmx.net 943 : 35 : load_file("libpqwalreceiver", false);
944 : :
945 : : /* Try to connect to the publisher. */
741 akapila@postgresql.o 946 [ + - + + ]: 35 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
630 947 : 35 : wrconn = walrcv_connect(sub->conninfo, true, true, must_use_password,
948 : : sub->name, &err);
1634 alvherre@alvh.no-ip. 949 [ - + ]: 34 : if (!wrconn)
1634 alvherre@alvh.no-ip. 950 [ # # ]:UBC 0 : ereport(ERROR,
951 : : (errcode(ERRCODE_CONNECTION_FAILURE),
952 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
953 : : sub->name, err)));
954 : :
1718 akapila@postgresql.o 955 [ + - ]:CBC 34 : PG_TRY();
956 : : {
1306 957 [ + + ]: 34 : if (validate_publications)
958 : 9 : check_publications(wrconn, validate_publications);
959 : :
960 : : /* Get the relation list from publisher. */
4 akapila@postgresql.o 961 :GNC 34 : pubrels = fetch_relation_list(wrconn, sub->publications);
962 : :
963 : : /* Get local relation list. */
964 : 34 : subrel_states = GetSubscriptionRelations(sub->oid, true, true, false);
1145 akapila@postgresql.o 965 :CBC 34 : subrel_count = list_length(subrel_states);
966 : :
967 : : /*
968 : : * Build qsorted arrays of local table oids and sequence oids for
969 : : * faster lookup. This can potentially contain all tables and
970 : : * sequences in the database so speed of lookup is important.
971 : : *
972 : : * We do not yet know the exact count of tables and sequences, so we
973 : : * allocate separate arrays for table OIDs and sequence OIDs based on
974 : : * the total number of relations (subrel_count).
975 : : */
976 : 34 : subrel_local_oids = palloc(subrel_count * sizeof(Oid));
4 akapila@postgresql.o 977 :GNC 34 : subseq_local_oids = palloc(subrel_count * sizeof(Oid));
1718 akapila@postgresql.o 978 [ + + + + :CBC 122 : foreach(lc, subrel_states)
+ + ]
979 : : {
980 : 88 : SubscriptionRelState *relstate = (SubscriptionRelState *) lfirst(lc);
981 : :
4 akapila@postgresql.o 982 [ - + ]:GNC 88 : if (get_rel_relkind(relstate->relid) == RELKIND_SEQUENCE)
4 akapila@postgresql.o 983 :UNC 0 : subseq_local_oids[seq_count++] = relstate->relid;
984 : : else
4 akapila@postgresql.o 985 :GNC 88 : subrel_local_oids[tbl_count++] = relstate->relid;
986 : : }
987 : :
988 : 34 : qsort(subrel_local_oids, tbl_count, sizeof(Oid), oid_cmp);
989 : 34 : check_publications_origin_tables(wrconn, sub->publications, copy_data,
990 : 34 : sub->retaindeadtuples, sub->origin,
991 : : subrel_local_oids, tbl_count,
992 : : sub->name);
993 : :
994 : 34 : qsort(subseq_local_oids, seq_count, sizeof(Oid), oid_cmp);
995 : 34 : check_publications_origin_sequences(wrconn, sub->publications,
996 : : copy_data, sub->origin,
997 : : subseq_local_oids, seq_count,
998 : : sub->name);
999 : :
1000 : : /*
1001 : : * Walk over the remote relations and try to match them to locally
1002 : : * known relations. If the relation is not known locally create a new
1003 : : * state for it.
1004 : : *
1005 : : * Also builds array of local oids of remote relations for the next
1006 : : * step.
1007 : : */
1718 akapila@postgresql.o 1008 :CBC 34 : off = 0;
4 akapila@postgresql.o 1009 :GNC 34 : pubrel_local_oids = palloc(list_length(pubrels) * sizeof(Oid));
1010 : :
1011 [ + + + + : 158 : foreach_ptr(PublicationRelKind, pubrelinfo, pubrels)
+ + ]
1012 : : {
1013 : 90 : RangeVar *rv = pubrelinfo->rv;
1014 : : Oid relid;
1015 : : char relkind;
1016 : :
1718 akapila@postgresql.o 1017 :CBC 90 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
4 akapila@postgresql.o 1018 :GNC 90 : relkind = get_rel_relkind(relid);
1019 : :
1020 : : /* Check for supported relkind. */
1021 : 90 : CheckSubscriptionRelkind(relkind, pubrelinfo->relkind,
1718 akapila@postgresql.o 1022 :CBC 90 : rv->schemaname, rv->relname);
1023 : :
1024 : 90 : pubrel_local_oids[off++] = relid;
1025 : :
1026 [ + + ]: 90 : if (!bsearch(&relid, subrel_local_oids,
4 akapila@postgresql.o 1027 :GNC 23 : tbl_count, sizeof(Oid), oid_cmp) &&
1028 [ + - ]: 23 : !bsearch(&relid, subseq_local_oids,
1029 : : seq_count, sizeof(Oid), oid_cmp))
1030 : : {
1718 akapila@postgresql.o 1031 [ + + ]:CBC 23 : AddSubscriptionRelState(sub->oid, relid,
1032 : : copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY,
1033 : : InvalidXLogRecPtr, true);
1034 [ + + - + ]: 23 : ereport(DEBUG1,
1035 : : errmsg_internal("%s \"%s.%s\" added to subscription \"%s\"",
1036 : : relkind == RELKIND_SEQUENCE ? "sequence" : "table",
1037 : : rv->schemaname, rv->relname, sub->name));
1038 : : }
1039 : : }
1040 : :
1041 : : /*
1042 : : * Next remove state for tables we should not care about anymore using
1043 : : * the data we collected above
1044 : : */
4 akapila@postgresql.o 1045 :GNC 34 : qsort(pubrel_local_oids, list_length(pubrels), sizeof(Oid), oid_cmp);
1046 : :
1047 [ + + ]: 122 : for (off = 0; off < tbl_count; off++)
1048 : : {
1718 akapila@postgresql.o 1049 :CBC 88 : Oid relid = subrel_local_oids[off];
1050 : :
1051 [ + + ]: 88 : if (!bsearch(&relid, pubrel_local_oids,
4 akapila@postgresql.o 1052 :GNC 88 : list_length(pubrels), sizeof(Oid), oid_cmp))
1053 : : {
1054 : : char state;
1055 : : XLogRecPtr statelsn;
1056 : 21 : SubRemoveRels *remove_rel = palloc(sizeof(SubRemoveRels));
1057 : :
1058 : : /*
1059 : : * Lock pg_subscription_rel with AccessExclusiveLock to
1060 : : * prevent any race conditions with the apply worker
1061 : : * re-launching workers at the same time this code is trying
1062 : : * to remove those tables.
1063 : : *
1064 : : * Even if new worker for this particular rel is restarted it
1065 : : * won't be able to make any progress as we hold exclusive
1066 : : * lock on pg_subscription_rel till the transaction end. It
1067 : : * will simply exit as there is no corresponding rel entry.
1068 : : *
1069 : : * This locking also ensures that the state of rels won't
1070 : : * change till we are done with this refresh operation.
1071 : : */
1718 akapila@postgresql.o 1072 [ + + ]:CBC 21 : if (!rel)
1073 : 9 : rel = table_open(SubscriptionRelRelationId, AccessExclusiveLock);
1074 : :
1075 : : /* Last known rel state. */
1076 : 21 : state = GetSubscriptionRelState(sub->oid, relid, &statelsn);
1077 : :
1078 : 21 : RemoveSubscriptionRel(sub->oid, relid);
1079 : :
4 akapila@postgresql.o 1080 :GNC 21 : remove_rel->relid = relid;
1081 : 21 : remove_rel->state = state;
1082 : :
1083 : 21 : sub_remove_rels = lappend(sub_remove_rels, remove_rel);
1084 : :
1718 akapila@postgresql.o 1085 :CBC 21 : logicalrep_worker_stop(sub->oid, relid);
1086 : :
1087 : : /*
1088 : : * For READY state, we would have already dropped the
1089 : : * tablesync origin.
1090 : : */
1141 1091 [ - + ]: 21 : if (state != SUBREL_STATE_READY)
1092 : : {
1093 : : char originname[NAMEDATALEN];
1094 : :
1095 : : /*
1096 : : * Drop the tablesync's origin tracking if exists.
1097 : : *
1098 : : * It is possible that the origin is not yet created for
1099 : : * tablesync worker, this can happen for the states before
1100 : : * SUBREL_STATE_FINISHEDCOPY. The tablesync worker or
1101 : : * apply worker can also concurrently try to drop the
1102 : : * origin and by this time the origin might be already
1103 : : * removed. For these reasons, passing missing_ok = true.
1104 : : */
1112 akapila@postgresql.o 1105 :UBC 0 : ReplicationOriginNameForLogicalRep(sub->oid, relid, originname,
1106 : : sizeof(originname));
1718 1107 : 0 : replorigin_drop_by_name(originname, true, false);
1108 : : }
1109 : :
1718 akapila@postgresql.o 1110 [ + + ]:CBC 21 : ereport(DEBUG1,
1111 : : (errmsg_internal("table \"%s.%s\" removed from subscription \"%s\"",
1112 : : get_namespace_name(get_rel_namespace(relid)),
1113 : : get_rel_name(relid),
1114 : : sub->name)));
1115 : : }
1116 : : }
1117 : :
1118 : : /*
1119 : : * Drop the tablesync slots associated with removed tables. This has
1120 : : * to be at the end because otherwise if there is an error while doing
1121 : : * the database operations we won't be able to rollback dropped slots.
1122 : : */
4 akapila@postgresql.o 1123 [ + + + + :GNC 89 : foreach_ptr(SubRemoveRels, rel, sub_remove_rels)
+ + ]
1124 : : {
1125 [ - + ]: 21 : if (rel->state != SUBREL_STATE_READY &&
4 akapila@postgresql.o 1126 [ # # ]:UNC 0 : rel->state != SUBREL_STATE_SYNCDONE)
1127 : : {
1718 akapila@postgresql.o 1128 :UBC 0 : char syncslotname[NAMEDATALEN] = {0};
1129 : :
1130 : : /*
1131 : : * For READY/SYNCDONE states we know the tablesync slot has
1132 : : * already been dropped by the tablesync worker.
1133 : : *
1134 : : * For other states, there is no certainty, maybe the slot
1135 : : * does not exist yet. Also, if we fail after removing some of
1136 : : * the slots, next time, it will again try to drop already
1137 : : * dropped slots and fail. For these reasons, we allow
1138 : : * missing_ok = true for the drop.
1139 : : */
4 akapila@postgresql.o 1140 :UNC 0 : ReplicationSlotNameForTablesync(sub->oid, rel->relid,
1141 : : syncslotname, sizeof(syncslotname));
1718 akapila@postgresql.o 1142 :UBC 0 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
1143 : : }
1144 : : }
1145 : :
1146 : : /*
1147 : : * Next remove state for sequences we should not care about anymore
1148 : : * using the data we collected above
1149 : : */
4 akapila@postgresql.o 1150 [ - + ]:GNC 34 : for (off = 0; off < seq_count; off++)
1151 : : {
4 akapila@postgresql.o 1152 :UNC 0 : Oid relid = subseq_local_oids[off];
1153 : :
1154 [ # # ]: 0 : if (!bsearch(&relid, pubrel_local_oids,
1155 : 0 : list_length(pubrels), sizeof(Oid), oid_cmp))
1156 : : {
1157 : : /*
1158 : : * This locking ensures that the state of rels won't change
1159 : : * till we are done with this refresh operation.
1160 : : */
1161 [ # # ]: 0 : if (!rel)
1162 : 0 : rel = table_open(SubscriptionRelRelationId, AccessExclusiveLock);
1163 : :
1164 : 0 : RemoveSubscriptionRel(sub->oid, relid);
1165 : :
1166 [ # # ]: 0 : ereport(DEBUG1,
1167 : : errmsg_internal("sequence \"%s.%s\" removed from subscription \"%s\"",
1168 : : get_namespace_name(get_rel_namespace(relid)),
1169 : : get_rel_name(relid),
1170 : : sub->name));
1171 : : }
1172 : : }
1173 : : }
1718 akapila@postgresql.o 1174 :UBC 0 : PG_FINALLY();
1175 : : {
1634 alvherre@alvh.no-ip. 1176 :CBC 34 : walrcv_disconnect(wrconn);
1177 : : }
1718 akapila@postgresql.o 1178 [ - + ]: 34 : PG_END_TRY();
1179 : :
1180 [ + + ]: 34 : if (rel)
1181 : 9 : table_close(rel, NoLock);
3140 peter_e@gmx.net 1182 : 34 : }
1183 : :
1184 : : /*
1185 : : * Marks all sequences with INIT state.
1186 : : */
1187 : : static void
4 akapila@postgresql.o 1188 :UNC 0 : AlterSubscription_refresh_seq(Subscription *sub)
1189 : : {
1190 : 0 : char *err = NULL;
1191 : : WalReceiverConn *wrconn;
1192 : : bool must_use_password;
1193 : :
1194 : : /* Load the library providing us libpq calls. */
1195 : 0 : load_file("libpqwalreceiver", false);
1196 : :
1197 : : /* Try to connect to the publisher. */
1198 [ # # # # ]: 0 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
1199 : 0 : wrconn = walrcv_connect(sub->conninfo, true, true, must_use_password,
1200 : : sub->name, &err);
1201 [ # # ]: 0 : if (!wrconn)
1202 [ # # ]: 0 : ereport(ERROR,
1203 : : errcode(ERRCODE_CONNECTION_FAILURE),
1204 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
1205 : : sub->name, err));
1206 : :
1207 [ # # ]: 0 : PG_TRY();
1208 : : {
1209 : : List *subrel_states;
1210 : :
1211 : 0 : check_publications_origin_sequences(wrconn, sub->publications, true,
1212 : : sub->origin, NULL, 0, sub->name);
1213 : :
1214 : : /* Get local sequence list. */
1215 : 0 : subrel_states = GetSubscriptionRelations(sub->oid, false, true, false);
1216 [ # # # # : 0 : foreach_ptr(SubscriptionRelState, subrel, subrel_states)
# # ]
1217 : : {
1218 : 0 : Oid relid = subrel->relid;
1219 : :
1220 : 0 : UpdateSubscriptionRelState(sub->oid, relid, SUBREL_STATE_INIT,
1221 : : InvalidXLogRecPtr, false);
1222 [ # # ]: 0 : ereport(DEBUG1,
1223 : : errmsg_internal("sequence \"%s.%s\" of subscription \"%s\" set to INIT state",
1224 : : get_namespace_name(get_rel_namespace(relid)),
1225 : : get_rel_name(relid),
1226 : : sub->name));
1227 : : }
1228 : : }
1229 : 0 : PG_FINALLY();
1230 : : {
1231 : 0 : walrcv_disconnect(wrconn);
1232 : : }
1233 [ # # ]: 0 : PG_END_TRY();
1234 : 0 : }
1235 : :
1236 : : /*
1237 : : * Common checks for altering failover, two_phase, and retain_dead_tuples
1238 : : * options.
1239 : : */
1240 : : static void
460 akapila@postgresql.o 1241 :CBC 13 : CheckAlterSubOption(Subscription *sub, const char *option,
1242 : : bool slot_needs_update, bool isTopLevel)
1243 : : {
96 akapila@postgresql.o 1244 [ + + + + :GNC 13 : Assert(strcmp(option, "failover") == 0 ||
- + ]
1245 : : strcmp(option, "two_phase") == 0 ||
1246 : : strcmp(option, "retain_dead_tuples") == 0);
1247 : :
1248 : : /*
1249 : : * Altering the retain_dead_tuples option does not update the slot on the
1250 : : * publisher.
1251 : : */
1252 [ + + - + ]: 13 : Assert(!slot_needs_update || strcmp(option, "retain_dead_tuples") != 0);
1253 : :
1254 : : /*
1255 : : * Do not allow changing the option if the subscription is enabled. This
1256 : : * is because both failover and two_phase options of the slot on the
1257 : : * publisher cannot be modified if the slot is currently acquired by the
1258 : : * existing walsender.
1259 : : *
1260 : : * Note that two_phase is enabled (aka changed from 'false' to 'true') on
1261 : : * the publisher by the existing walsender, so we could have allowed that
1262 : : * even when the subscription is enabled. But we kept this restriction for
1263 : : * the sake of consistency and simplicity.
1264 : : *
1265 : : * Additionally, do not allow changing the retain_dead_tuples option when
1266 : : * the subscription is enabled to prevent race conditions arising from the
1267 : : * new option value being acknowledged asynchronously by the launcher and
1268 : : * apply workers.
1269 : : *
1270 : : * Without the restriction, a race condition may arise when a user
1271 : : * disables and immediately re-enables the retain_dead_tuples option. In
1272 : : * this case, the launcher might drop the slot upon noticing the disabled
1273 : : * action, while the apply worker may keep maintaining
1274 : : * oldest_nonremovable_xid without noticing the option change. During this
1275 : : * period, a transaction ID wraparound could falsely make this ID appear
1276 : : * as if it originates from the future w.r.t the transaction ID stored in
1277 : : * the slot maintained by launcher.
1278 : : *
1279 : : * Similarly, if the user enables retain_dead_tuples concurrently with the
1280 : : * launcher starting the worker, the apply worker may start calculating
1281 : : * oldest_nonremovable_xid before the launcher notices the enable action.
1282 : : * Consequently, the launcher may update slot.xmin to a newer value than
1283 : : * that maintained by the worker. In subsequent cycles, upon integrating
1284 : : * the worker's oldest_nonremovable_xid, the launcher might detect a
1285 : : * retreat in the calculated xmin, necessitating additional handling.
1286 : : *
1287 : : * XXX To address the above race conditions, we can define
1288 : : * oldest_nonremovable_xid as FullTransactionID and adds the check to
1289 : : * disallow retreating the conflict slot's xmin. For now, we kept the
1290 : : * implementation simple by disallowing change to the retain_dead_tuples,
1291 : : * but in the future we can change this after some more analysis.
1292 : : *
1293 : : * Note that we could restrict only the enabling of retain_dead_tuples to
1294 : : * avoid the race conditions described above, but we maintain the
1295 : : * restriction for both enable and disable operations for the sake of
1296 : : * consistency.
1297 : : */
460 akapila@postgresql.o 1298 [ + + ]:CBC 13 : if (sub->enabled)
1299 [ + - ]: 2 : ereport(ERROR,
1300 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1301 : : errmsg("cannot set option \"%s\" for enabled subscription",
1302 : : option)));
1303 : :
1304 [ + + ]: 11 : if (slot_needs_update)
1305 : : {
1306 : : StringInfoData cmd;
1307 : :
1308 : : /*
1309 : : * A valid slot must be associated with the subscription for us to
1310 : : * modify any of the slot's properties.
1311 : : */
1312 [ - + ]: 8 : if (!sub->slotname)
460 akapila@postgresql.o 1313 [ # # ]:UBC 0 : ereport(ERROR,
1314 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1315 : : errmsg("cannot set option \"%s\" for a subscription that does not have a slot name",
1316 : : option)));
1317 : :
1318 : : /* The changed option of the slot can't be rolled back. */
460 akapila@postgresql.o 1319 :CBC 8 : initStringInfo(&cmd);
1320 : 8 : appendStringInfo(&cmd, "ALTER SUBSCRIPTION ... SET (%s)", option);
1321 : :
1322 : 8 : PreventInTransactionBlock(isTopLevel, cmd.data);
1323 : 5 : pfree(cmd.data);
1324 : : }
1325 : 8 : }
1326 : :
1327 : : /*
1328 : : * Alter the existing subscription.
1329 : : */
1330 : : ObjectAddress
1565 dean.a.rasheed@gmail 1331 : 258 : AlterSubscription(ParseState *pstate, AlterSubscriptionStmt *stmt,
1332 : : bool isTopLevel)
1333 : : {
1334 : : Relation rel;
1335 : : ObjectAddress myself;
1336 : : bool nulls[Natts_pg_subscription];
1337 : : bool replaces[Natts_pg_subscription];
1338 : : Datum values[Natts_pg_subscription];
1339 : : HeapTuple tup;
1340 : : Oid subid;
3140 peter_e@gmx.net 1341 : 258 : bool update_tuple = false;
460 akapila@postgresql.o 1342 : 258 : bool update_failover = false;
1343 : 258 : bool update_two_phase = false;
96 akapila@postgresql.o 1344 :GNC 258 : bool check_pub_rdt = false;
1345 : : bool retain_dead_tuples;
1346 : : int max_retention;
1347 : : bool retention_active;
1348 : : char *origin;
1349 : : Subscription *sub;
1350 : : Form_pg_subscription form;
1351 : : bits32 supported_opts;
1574 akapila@postgresql.o 1352 :CBC 258 : SubOpts opts = {0};
1353 : :
2471 andres@anarazel.de 1354 : 258 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
1355 : :
1356 : : /* Fetch the existing tuple. */
80 peter@eisentraut.org 1357 :GNC 258 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
1358 : : CStringGetDatum(stmt->subname));
1359 : :
3203 peter_e@gmx.net 1360 [ + + ]:CBC 258 : if (!HeapTupleIsValid(tup))
1361 [ + - ]: 3 : ereport(ERROR,
1362 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
1363 : : errmsg("subscription \"%s\" does not exist",
1364 : : stmt->subname)));
1365 : :
2533 andres@anarazel.de 1366 : 255 : form = (Form_pg_subscription) GETSTRUCT(tup);
1367 : 255 : subid = form->oid;
1368 : :
1369 : : /* must be owner */
1079 peter@eisentraut.org 1370 [ - + ]: 255 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
2886 peter_e@gmx.net 1371 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
3203 1372 : 0 : stmt->subname);
1373 : :
3093 peter_e@gmx.net 1374 :CBC 255 : sub = GetSubscription(subid, false);
1375 : :
96 akapila@postgresql.o 1376 :GNC 255 : retain_dead_tuples = sub->retaindeadtuples;
1377 : 255 : origin = sub->origin;
55 1378 : 255 : max_retention = sub->maxretention;
1379 : 255 : retention_active = sub->retentionactive;
1380 : :
1381 : : /*
1382 : : * Don't allow non-superuser modification of a subscription with
1383 : : * password_required=false.
1384 : : */
942 rhaas@postgresql.org 1385 [ + + - + ]:CBC 255 : if (!sub->passwordrequired && !superuser())
942 rhaas@postgresql.org 1386 [ # # ]:UBC 0 : ereport(ERROR,
1387 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1388 : : errmsg("password_required=false is superuser-only"),
1389 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1390 : :
1391 : : /* Lock the subscription so nobody else can do anything with it. */
3038 peter_e@gmx.net 1392 :CBC 255 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
1393 : :
1394 : : /* Form a new tuple. */
3203 1395 : 255 : memset(values, 0, sizeof(values));
1396 : 255 : memset(nulls, false, sizeof(nulls));
1397 : 255 : memset(replaces, false, sizeof(replaces));
1398 : :
3140 1399 [ + + + + : 255 : switch (stmt->kind)
+ + - +
- ]
1400 : : {
1401 : 109 : case ALTER_SUBSCRIPTION_OPTIONS:
1402 : : {
1574 akapila@postgresql.o 1403 : 109 : supported_opts = (SUBOPT_SLOT_NAME |
1404 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
1405 : : SUBOPT_STREAMING | SUBOPT_TWOPHASE_COMMIT |
1406 : : SUBOPT_DISABLE_ON_ERR |
1407 : : SUBOPT_PASSWORD_REQUIRED |
1408 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER |
1409 : : SUBOPT_RETAIN_DEAD_TUPLES |
1410 : : SUBOPT_MAX_RETENTION_DURATION |
1411 : : SUBOPT_ORIGIN);
1412 : :
1565 dean.a.rasheed@gmail 1413 : 109 : parse_subscription_options(pstate, stmt->options,
1414 : : supported_opts, &opts);
1415 : :
1574 akapila@postgresql.o 1416 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_SLOT_NAME))
1417 : : {
1418 : : /*
1419 : : * The subscription must be disabled to allow slot_name as
1420 : : * 'none', otherwise, the apply worker will repeatedly try
1421 : : * to stream the data using that slot_name which neither
1422 : : * exists on the publisher nor the user will be allowed to
1423 : : * create it.
1424 : : */
1425 [ - + - - ]: 36 : if (sub->enabled && !opts.slot_name)
3093 peter_e@gmx.net 1426 [ # # ]:UBC 0 : ereport(ERROR,
1427 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1428 : : errmsg("cannot set %s for enabled subscription",
1429 : : "slot_name = NONE")));
1430 : :
1574 akapila@postgresql.o 1431 [ + + ]:CBC 36 : if (opts.slot_name)
3093 peter_e@gmx.net 1432 : 3 : values[Anum_pg_subscription_subslotname - 1] =
1574 akapila@postgresql.o 1433 : 3 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
1434 : : else
3093 peter_e@gmx.net 1435 : 33 : nulls[Anum_pg_subscription_subslotname - 1] = true;
3118 1436 : 36 : replaces[Anum_pg_subscription_subslotname - 1] = true;
1437 : : }
1438 : :
1574 akapila@postgresql.o 1439 [ + + ]: 100 : if (opts.synchronous_commit)
1440 : : {
3118 peter_e@gmx.net 1441 : 3 : values[Anum_pg_subscription_subsynccommit - 1] =
1574 akapila@postgresql.o 1442 : 3 : CStringGetTextDatum(opts.synchronous_commit);
3118 peter_e@gmx.net 1443 : 3 : replaces[Anum_pg_subscription_subsynccommit - 1] = true;
1444 : : }
1445 : :
1574 akapila@postgresql.o 1446 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_BINARY))
1447 : : {
1927 tgl@sss.pgh.pa.us 1448 : 9 : values[Anum_pg_subscription_subbinary - 1] =
1574 akapila@postgresql.o 1449 : 9 : BoolGetDatum(opts.binary);
1927 tgl@sss.pgh.pa.us 1450 : 9 : replaces[Anum_pg_subscription_subbinary - 1] = true;
1451 : : }
1452 : :
1574 akapila@postgresql.o 1453 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_STREAMING))
1454 : : {
1880 1455 : 15 : values[Anum_pg_subscription_substream - 1] =
1022 1456 : 15 : CharGetDatum(opts.streaming);
1880 1457 : 15 : replaces[Anum_pg_subscription_substream - 1] = true;
1458 : : }
1459 : :
1323 1460 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_DISABLE_ON_ERR))
1461 : : {
1462 : : values[Anum_pg_subscription_subdisableonerr - 1]
1463 : 3 : = BoolGetDatum(opts.disableonerr);
1464 : : replaces[Anum_pg_subscription_subdisableonerr - 1]
1465 : 3 : = true;
1466 : : }
1467 : :
942 rhaas@postgresql.org 1468 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_PASSWORD_REQUIRED))
1469 : : {
1470 : : /* Non-superuser may not disable password_required. */
1471 [ + + - + ]: 6 : if (!opts.passwordrequired && !superuser())
942 rhaas@postgresql.org 1472 [ # # ]:UBC 0 : ereport(ERROR,
1473 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1474 : : errmsg("password_required=false is superuser-only"),
1475 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1476 : :
1477 : : values[Anum_pg_subscription_subpasswordrequired - 1]
942 rhaas@postgresql.org 1478 :CBC 6 : = BoolGetDatum(opts.passwordrequired);
1479 : : replaces[Anum_pg_subscription_subpasswordrequired - 1]
1480 : 6 : = true;
1481 : : }
1482 : :
775 akapila@postgresql.o 1483 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_RUN_AS_OWNER))
1484 : : {
1485 : 7 : values[Anum_pg_subscription_subrunasowner - 1] =
1486 : 7 : BoolGetDatum(opts.runasowner);
1487 : 7 : replaces[Anum_pg_subscription_subrunasowner - 1] = true;
1488 : : }
1489 : :
460 1490 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_TWOPHASE_COMMIT))
1491 : : {
1492 : : /*
1493 : : * We need to update both the slot and the subscription
1494 : : * for the two_phase option. We can enable the two_phase
1495 : : * option for a slot only once the initial data
1496 : : * synchronization is done. This is to avoid missing some
1497 : : * data as explained in comments atop worker.c.
1498 : : */
1499 : 3 : update_two_phase = !opts.twophase;
1500 : :
1501 : 3 : CheckAlterSubOption(sub, "two_phase", update_two_phase,
1502 : : isTopLevel);
1503 : :
1504 : : /*
1505 : : * Modifying the two_phase slot option requires a slot
1506 : : * lookup by slot name, so changing the slot name at the
1507 : : * same time is not allowed.
1508 : : */
1509 [ + + ]: 3 : if (update_two_phase &&
1510 [ - + ]: 1 : IsSet(opts.specified_opts, SUBOPT_SLOT_NAME))
460 akapila@postgresql.o 1511 [ # # ]:UBC 0 : ereport(ERROR,
1512 : : (errcode(ERRCODE_SYNTAX_ERROR),
1513 : : errmsg("\"slot_name\" and \"two_phase\" cannot be altered at the same time")));
1514 : :
1515 : : /*
1516 : : * Note that workers may still survive even if the
1517 : : * subscription has been disabled.
1518 : : *
1519 : : * Ensure workers have already been exited to avoid
1520 : : * getting prepared transactions while we are disabling
1521 : : * the two_phase option. Otherwise, the changes of an
1522 : : * already prepared transaction can be replicated again
1523 : : * along with its corresponding commit, leading to
1524 : : * duplicate data or errors.
1525 : : */
460 akapila@postgresql.o 1526 [ - + ]:CBC 3 : if (logicalrep_workers_find(subid, true, true))
636 akapila@postgresql.o 1527 [ # # ]:UBC 0 : ereport(ERROR,
1528 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1529 : : errmsg("cannot alter \"two_phase\" when logical replication worker is still running"),
1530 : : errhint("Try again after some time.")));
1531 : :
1532 : : /*
1533 : : * two_phase cannot be disabled if there are any
1534 : : * uncommitted prepared transactions present otherwise it
1535 : : * can lead to duplicate data or errors as explained in
1536 : : * the comment above.
1537 : : */
460 akapila@postgresql.o 1538 [ + + ]:CBC 3 : if (update_two_phase &&
1539 [ + - ]: 1 : sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED &&
1540 [ - + ]: 1 : LookupGXactBySubid(subid))
636 akapila@postgresql.o 1541 [ # # ]:UBC 0 : ereport(ERROR,
1542 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1543 : : errmsg("cannot disable \"two_phase\" when prepared transactions exist"),
1544 : : errhint("Resolve these transactions and try again.")));
1545 : :
1546 : : /* Change system catalog accordingly */
460 akapila@postgresql.o 1547 :CBC 3 : values[Anum_pg_subscription_subtwophasestate - 1] =
1548 [ + + ]: 3 : CharGetDatum(opts.twophase ?
1549 : : LOGICALREP_TWOPHASE_STATE_PENDING :
1550 : : LOGICALREP_TWOPHASE_STATE_DISABLED);
1551 : 3 : replaces[Anum_pg_subscription_subtwophasestate - 1] = true;
1552 : : }
1553 : :
1554 [ + + ]: 100 : if (IsSet(opts.specified_opts, SUBOPT_FAILOVER))
1555 : : {
1556 : : /*
1557 : : * Similar to the two_phase case above, we need to update
1558 : : * the failover option for both the slot and the
1559 : : * subscription.
1560 : : */
1561 : 8 : update_failover = true;
1562 : :
1563 : 8 : CheckAlterSubOption(sub, "failover", update_failover,
1564 : : isTopLevel);
1565 : :
636 1566 : 4 : values[Anum_pg_subscription_subfailover - 1] =
1567 : 4 : BoolGetDatum(opts.failover);
1568 : 4 : replaces[Anum_pg_subscription_subfailover - 1] = true;
1569 : : }
1570 : :
96 akapila@postgresql.o 1571 [ + + ]:GNC 96 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES))
1572 : : {
1573 : 2 : values[Anum_pg_subscription_subretaindeadtuples - 1] =
1574 : 2 : BoolGetDatum(opts.retaindeadtuples);
1575 : 2 : replaces[Anum_pg_subscription_subretaindeadtuples - 1] = true;
1576 : :
1577 : : /*
1578 : : * Update the retention status only if there's a change in
1579 : : * the retain_dead_tuples option value.
1580 : : *
1581 : : * Automatically marking retention as active when
1582 : : * retain_dead_tuples is enabled may not always be ideal,
1583 : : * especially if retention was previously stopped and the
1584 : : * user toggles retain_dead_tuples without adjusting the
1585 : : * publisher workload. However, this behavior provides a
1586 : : * convenient way for users to manually refresh the
1587 : : * retention status. Since retention will be stopped again
1588 : : * unless the publisher workload is reduced, this approach
1589 : : * is acceptable for now.
1590 : : */
55 1591 [ + - ]: 2 : if (opts.retaindeadtuples != sub->retaindeadtuples)
1592 : : {
1593 : 2 : values[Anum_pg_subscription_subretentionactive - 1] =
1594 : 2 : BoolGetDatum(opts.retaindeadtuples);
1595 : 2 : replaces[Anum_pg_subscription_subretentionactive - 1] = true;
1596 : :
1597 : 2 : retention_active = opts.retaindeadtuples;
1598 : : }
1599 : :
96 1600 : 2 : CheckAlterSubOption(sub, "retain_dead_tuples", false, isTopLevel);
1601 : :
1602 : : /*
1603 : : * Workers may continue running even after the
1604 : : * subscription has been disabled.
1605 : : *
1606 : : * To prevent race conditions (as described in
1607 : : * CheckAlterSubOption()), ensure that all worker
1608 : : * processes have already exited before proceeding.
1609 : : */
1610 [ - + ]: 1 : if (logicalrep_workers_find(subid, true, true))
96 akapila@postgresql.o 1611 [ # # ]:UNC 0 : ereport(ERROR,
1612 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1613 : : errmsg("cannot alter retain_dead_tuples when logical replication worker is still running"),
1614 : : errhint("Try again after some time.")));
1615 : :
1616 : : /*
1617 : : * Notify the launcher to manage the replication slot for
1618 : : * conflict detection. This ensures that replication slot
1619 : : * is efficiently handled (created, updated, or dropped)
1620 : : * in response to any configuration changes.
1621 : : */
96 akapila@postgresql.o 1622 :GNC 1 : ApplyLauncherWakeupAtCommit();
1623 : :
1624 : 1 : check_pub_rdt = opts.retaindeadtuples;
1625 : 1 : retain_dead_tuples = opts.retaindeadtuples;
1626 : : }
1627 : :
55 1628 [ + + ]: 95 : if (IsSet(opts.specified_opts, SUBOPT_MAX_RETENTION_DURATION))
1629 : : {
1630 : 5 : values[Anum_pg_subscription_submaxretention - 1] =
1631 : 5 : Int32GetDatum(opts.maxretention);
1632 : 5 : replaces[Anum_pg_subscription_submaxretention - 1] = true;
1633 : :
1634 : 5 : max_retention = opts.maxretention;
1635 : : }
1636 : :
1637 : : /*
1638 : : * Ensure that system configuration paramters are set
1639 : : * appropriately to support retain_dead_tuples and
1640 : : * max_retention_duration.
1641 : : */
1642 [ + + ]: 95 : if (IsSet(opts.specified_opts, SUBOPT_RETAIN_DEAD_TUPLES) ||
1643 [ + + ]: 94 : IsSet(opts.specified_opts, SUBOPT_MAX_RETENTION_DURATION))
1644 : 6 : CheckSubDeadTupleRetention(true, !sub->enabled, NOTICE,
1645 : : retain_dead_tuples,
1646 : : retention_active,
1647 : 6 : (max_retention > 0));
1648 : :
1194 akapila@postgresql.o 1649 [ + + ]:CBC 95 : if (IsSet(opts.specified_opts, SUBOPT_ORIGIN))
1650 : : {
1651 : 5 : values[Anum_pg_subscription_suborigin - 1] =
1652 : 5 : CStringGetTextDatum(opts.origin);
1653 : 5 : replaces[Anum_pg_subscription_suborigin - 1] = true;
1654 : :
1655 : : /*
1656 : : * Check if changes from different origins may be received
1657 : : * from the publisher when the origin is changed to ANY
1658 : : * and retain_dead_tuples is enabled.
1659 : : */
96 akapila@postgresql.o 1660 [ + + ]:GNC 7 : check_pub_rdt = retain_dead_tuples &&
1661 [ + + ]: 2 : pg_strcasecmp(opts.origin, LOGICALREP_ORIGIN_ANY) == 0;
1662 : :
1663 : 5 : origin = opts.origin;
1664 : : }
1665 : :
3140 peter_e@gmx.net 1666 :CBC 95 : update_tuple = true;
1667 : 95 : break;
1668 : : }
1669 : :
1670 : 50 : case ALTER_SUBSCRIPTION_ENABLED:
1671 : : {
1565 dean.a.rasheed@gmail 1672 : 50 : parse_subscription_options(pstate, stmt->options,
1673 : : SUBOPT_ENABLED, &opts);
1574 akapila@postgresql.o 1674 [ - + ]: 50 : Assert(IsSet(opts.specified_opts, SUBOPT_ENABLED));
1675 : :
1676 [ + + + - ]: 50 : if (!sub->slotname && opts.enabled)
3093 peter_e@gmx.net 1677 [ + - ]: 3 : ereport(ERROR,
1678 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1679 : : errmsg("cannot enable subscription that does not have a slot name")));
1680 : :
1681 : : /*
1682 : : * Check track_commit_timestamp only when enabling the
1683 : : * subscription in case it was disabled after creation. See
1684 : : * comments atop CheckSubDeadTupleRetention() for details.
1685 : : */
55 akapila@postgresql.o 1686 :GNC 47 : CheckSubDeadTupleRetention(opts.enabled, !opts.enabled,
1687 : 47 : WARNING, sub->retaindeadtuples,
1688 : 47 : sub->retentionactive, false);
1689 : :
3140 peter_e@gmx.net 1690 :CBC 47 : values[Anum_pg_subscription_subenabled - 1] =
1574 akapila@postgresql.o 1691 : 47 : BoolGetDatum(opts.enabled);
3140 peter_e@gmx.net 1692 : 47 : replaces[Anum_pg_subscription_subenabled - 1] = true;
1693 : :
1574 akapila@postgresql.o 1694 [ + + ]: 47 : if (opts.enabled)
3107 peter_e@gmx.net 1695 : 26 : ApplyLauncherWakeupAtCommit();
1696 : :
3140 1697 : 47 : update_tuple = true;
1698 : :
1699 : : /*
1700 : : * The subscription might be initially created with
1701 : : * connect=false and retain_dead_tuples=true, meaning the
1702 : : * remote server's status may not be checked. Ensure this
1703 : : * check is conducted now.
1704 : : */
96 akapila@postgresql.o 1705 [ + + + + ]:GNC 47 : check_pub_rdt = sub->retaindeadtuples && opts.enabled;
3140 peter_e@gmx.net 1706 :CBC 47 : break;
1707 : : }
1708 : :
1709 : 10 : case ALTER_SUBSCRIPTION_CONNECTION:
1710 : : /* Load the library providing us libpq calls. */
3094 1711 : 10 : load_file("libpqwalreceiver", false);
1712 : : /* Check the connection info string. */
942 rhaas@postgresql.org 1713 [ + - + + ]: 10 : walrcv_check_conninfo(stmt->conninfo,
1714 : : sub->passwordrequired && !sub->ownersuperuser);
1715 : :
3140 peter_e@gmx.net 1716 : 7 : values[Anum_pg_subscription_subconninfo - 1] =
1717 : 7 : CStringGetTextDatum(stmt->conninfo);
1718 : 7 : replaces[Anum_pg_subscription_subconninfo - 1] = true;
1719 : 7 : update_tuple = true;
1720 : :
1721 : : /*
1722 : : * Since the remote server configuration might have changed,
1723 : : * perform a check to ensure it permits enabling
1724 : : * retain_dead_tuples.
1725 : : */
96 akapila@postgresql.o 1726 :GNC 7 : check_pub_rdt = sub->retaindeadtuples;
3140 peter_e@gmx.net 1727 :CBC 7 : break;
1728 : :
1665 peter@eisentraut.org 1729 : 16 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
1730 : : {
1574 akapila@postgresql.o 1731 : 16 : supported_opts = SUBOPT_COPY_DATA | SUBOPT_REFRESH;
1565 dean.a.rasheed@gmail 1732 : 16 : parse_subscription_options(pstate, stmt->options,
1733 : : supported_opts, &opts);
1734 : :
3140 peter_e@gmx.net 1735 : 16 : values[Anum_pg_subscription_subpublications - 1] =
3085 bruce@momjian.us 1736 : 16 : publicationListToArray(stmt->publication);
3140 peter_e@gmx.net 1737 : 16 : replaces[Anum_pg_subscription_subpublications - 1] = true;
1738 : :
1739 : 16 : update_tuple = true;
1740 : :
1741 : : /* Refresh if user asked us to. */
1574 akapila@postgresql.o 1742 [ + + ]: 16 : if (opts.refresh)
1743 : : {
3093 peter_e@gmx.net 1744 [ - + ]: 13 : if (!sub->enabled)
3093 peter_e@gmx.net 1745 [ # # ]:UBC 0 : ereport(ERROR,
1746 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1747 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
1748 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION ... WITH (refresh = false).")));
1749 : :
1750 : : /*
1751 : : * See ALTER_SUBSCRIPTION_REFRESH_PUBLICATION for details
1752 : : * why this is not allowed.
1753 : : */
1566 akapila@postgresql.o 1754 [ - + - - ]:CBC 13 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1566 akapila@postgresql.o 1755 [ # # ]:UBC 0 : ereport(ERROR,
1756 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1757 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
1758 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
1759 : :
1718 akapila@postgresql.o 1760 :CBC 13 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
1761 : :
1762 : : /* Make sure refresh sees the new list of publications. */
3140 peter_e@gmx.net 1763 : 7 : sub->publications = stmt->publication;
1764 : :
1306 akapila@postgresql.o 1765 : 7 : AlterSubscription_refresh(sub, opts.copy_data,
1766 : : stmt->publication);
1767 : : }
1768 : :
3140 peter_e@gmx.net 1769 : 10 : break;
1770 : : }
1771 : :
1665 peter@eisentraut.org 1772 : 27 : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
1773 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
1774 : : {
1775 : : List *publist;
1574 akapila@postgresql.o 1776 : 27 : bool isadd = stmt->kind == ALTER_SUBSCRIPTION_ADD_PUBLICATION;
1777 : :
1525 1778 : 27 : supported_opts = SUBOPT_REFRESH | SUBOPT_COPY_DATA;
1565 dean.a.rasheed@gmail 1779 : 27 : parse_subscription_options(pstate, stmt->options,
1780 : : supported_opts, &opts);
1781 : :
1574 akapila@postgresql.o 1782 : 27 : publist = merge_publications(sub->publications, stmt->publication, isadd, stmt->subname);
1665 peter@eisentraut.org 1783 : 9 : values[Anum_pg_subscription_subpublications - 1] =
1784 : 9 : publicationListToArray(publist);
1785 : 9 : replaces[Anum_pg_subscription_subpublications - 1] = true;
1786 : :
1787 : 9 : update_tuple = true;
1788 : :
1789 : : /* Refresh if user asked us to. */
1574 akapila@postgresql.o 1790 [ + + ]: 9 : if (opts.refresh)
1791 : : {
1792 : : /* We only need to validate user specified publications. */
1306 1793 [ + + ]: 3 : List *validate_publications = (isadd) ? stmt->publication : NULL;
1794 : :
1665 peter@eisentraut.org 1795 [ - + ]: 3 : if (!sub->enabled)
1665 peter@eisentraut.org 1796 [ # # # # ]:UBC 0 : ereport(ERROR,
1797 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1798 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
1799 : : /* translator: %s is an SQL ALTER command */
1800 : : errhint("Use %s instead.",
1801 : : isadd ?
1802 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION ... WITH (refresh = false)" :
1803 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION ... WITH (refresh = false)")));
1804 : :
1805 : : /*
1806 : : * See ALTER_SUBSCRIPTION_REFRESH_PUBLICATION for details
1807 : : * why this is not allowed.
1808 : : */
1566 akapila@postgresql.o 1809 [ - + - - ]:CBC 3 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1566 akapila@postgresql.o 1810 [ # # # # ]:UBC 0 : ereport(ERROR,
1811 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1812 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
1813 : : /* translator: %s is an SQL ALTER command */
1814 : : errhint("Use %s with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.",
1815 : : isadd ?
1816 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION" :
1817 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION")));
1818 : :
1665 peter@eisentraut.org 1819 :CBC 3 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
1820 : :
1821 : : /* Refresh the new list of publications. */
1525 akapila@postgresql.o 1822 : 3 : sub->publications = publist;
1823 : :
1306 1824 : 3 : AlterSubscription_refresh(sub, opts.copy_data,
1825 : : validate_publications);
1826 : : }
1827 : :
1665 peter@eisentraut.org 1828 : 9 : break;
1829 : : }
1830 : :
12 akapila@postgresql.o 1831 :GNC 31 : case ALTER_SUBSCRIPTION_REFRESH_PUBLICATION:
1832 : : {
3093 peter_e@gmx.net 1833 [ + + ]:CBC 31 : if (!sub->enabled)
1834 [ + - ]: 3 : ereport(ERROR,
1835 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1836 : : errmsg("%s is not allowed for disabled subscriptions",
1837 : : "ALTER SUBSCRIPTION ... REFRESH PUBLICATION")));
1838 : :
1565 dean.a.rasheed@gmail 1839 : 28 : parse_subscription_options(pstate, stmt->options,
1840 : : SUBOPT_COPY_DATA, &opts);
1841 : :
1842 : : /*
1843 : : * The subscription option "two_phase" requires that
1844 : : * replication has passed the initial table synchronization
1845 : : * phase before the two_phase becomes properly enabled.
1846 : : *
1847 : : * But, having reached this two-phase commit "enabled" state
1848 : : * we must not allow any subsequent table initialization to
1849 : : * occur. So the ALTER SUBSCRIPTION ... REFRESH PUBLICATION is
1850 : : * disallowed when the user had requested two_phase = on mode.
1851 : : *
1852 : : * The exception to this restriction is when copy_data =
1853 : : * false, because when copy_data is false the tablesync will
1854 : : * start already in READY state and will exit directly without
1855 : : * doing anything.
1856 : : *
1857 : : * For more details see comments atop worker.c.
1858 : : */
1566 akapila@postgresql.o 1859 [ - + - - ]: 28 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1566 akapila@postgresql.o 1860 [ # # ]:UBC 0 : ereport(ERROR,
1861 : : (errcode(ERRCODE_SYNTAX_ERROR),
1862 : : errmsg("ALTER SUBSCRIPTION ... REFRESH PUBLICATION with copy_data is not allowed when two_phase is enabled"),
1863 : : errhint("Use ALTER SUBSCRIPTION ... REFRESH PUBLICATION with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
1864 : :
12 akapila@postgresql.o 1865 :GNC 28 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION ... REFRESH PUBLICATION");
1866 : :
1306 akapila@postgresql.o 1867 :CBC 25 : AlterSubscription_refresh(sub, opts.copy_data, NULL);
1868 : :
3140 peter_e@gmx.net 1869 : 24 : break;
1870 : : }
1871 : :
4 akapila@postgresql.o 1872 :UNC 0 : case ALTER_SUBSCRIPTION_REFRESH_SEQUENCES:
1873 : : {
1874 [ # # ]: 0 : if (!sub->enabled)
1875 [ # # ]: 0 : ereport(ERROR,
1876 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1877 : : errmsg("%s is not allowed for disabled subscriptions",
1878 : : "ALTER SUBSCRIPTION ... REFRESH SEQUENCES"));
1879 : :
1880 : 0 : AlterSubscription_refresh_seq(sub);
1881 : :
1882 : 0 : break;
1883 : : }
1884 : :
1315 akapila@postgresql.o 1885 :CBC 12 : case ALTER_SUBSCRIPTION_SKIP:
1886 : : {
1887 : 12 : parse_subscription_options(pstate, stmt->options, SUBOPT_LSN, &opts);
1888 : :
1889 : : /* ALTER SUBSCRIPTION ... SKIP supports only LSN option */
1890 [ - + ]: 9 : Assert(IsSet(opts.specified_opts, SUBOPT_LSN));
1891 : :
1892 : : /*
1893 : : * If the user sets subskiplsn, we do a sanity check to make
1894 : : * sure that the specified LSN is a probable value.
1895 : : */
1896 [ + + ]: 9 : if (!XLogRecPtrIsInvalid(opts.lsn))
1897 : : {
1898 : : RepOriginId originid;
1899 : : char originname[NAMEDATALEN];
1900 : : XLogRecPtr remote_lsn;
1901 : :
1112 1902 : 6 : ReplicationOriginNameForLogicalRep(subid, InvalidOid,
1903 : : originname, sizeof(originname));
1315 1904 : 6 : originid = replorigin_by_name(originname, false);
1905 : 6 : remote_lsn = replorigin_get_progress(originid, false);
1906 : :
1907 : : /* Check the given LSN is at least a future LSN */
1908 [ + + - + ]: 6 : if (!XLogRecPtrIsInvalid(remote_lsn) && opts.lsn < remote_lsn)
1315 akapila@postgresql.o 1909 [ # # ]:UBC 0 : ereport(ERROR,
1910 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1911 : : errmsg("skip WAL location (LSN %X/%08X) must be greater than origin LSN %X/%08X",
1912 : : LSN_FORMAT_ARGS(opts.lsn),
1913 : : LSN_FORMAT_ARGS(remote_lsn))));
1914 : : }
1915 : :
1315 akapila@postgresql.o 1916 :CBC 9 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(opts.lsn);
1917 : 9 : replaces[Anum_pg_subscription_subskiplsn - 1] = true;
1918 : :
1919 : 9 : update_tuple = true;
1920 : 9 : break;
1921 : : }
1922 : :
3140 peter_e@gmx.net 1923 :UBC 0 : default:
1924 [ # # ]: 0 : elog(ERROR, "unrecognized ALTER SUBSCRIPTION kind %d",
1925 : : stmt->kind);
1926 : : }
1927 : :
1928 : : /* Update the catalog if needed. */
3140 peter_e@gmx.net 1929 [ + + ]:CBC 201 : if (update_tuple)
1930 : : {
1931 : 177 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
1932 : : replaces);
1933 : :
1934 : 177 : CatalogTupleUpdate(rel, &tup->t_self, tup);
1935 : :
1936 : 177 : heap_freetuple(tup);
1937 : : }
1938 : :
1939 : : /*
1940 : : * Try to acquire the connection necessary either for modifying the slot
1941 : : * or for checking if the remote server permits enabling
1942 : : * retain_dead_tuples.
1943 : : *
1944 : : * This has to be at the end because otherwise if there is an error while
1945 : : * doing the database operations we won't be able to rollback altered
1946 : : * slot.
1947 : : */
96 akapila@postgresql.o 1948 [ + + + + :GNC 201 : if (update_failover || update_two_phase || check_pub_rdt)
+ + ]
1949 : : {
1950 : : bool must_use_password;
1951 : : char *err;
1952 : : WalReceiverConn *wrconn;
1953 : :
1954 : : /* Load the library providing us libpq calls. */
636 akapila@postgresql.o 1955 :CBC 12 : load_file("libpqwalreceiver", false);
1956 : :
1957 : : /*
1958 : : * Try to connect to the publisher, using the new connection string if
1959 : : * available.
1960 : : */
1961 [ + - - + ]: 12 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
96 akapila@postgresql.o 1962 [ - + ]:GNC 12 : wrconn = walrcv_connect(stmt->conninfo ? stmt->conninfo : sub->conninfo,
1963 : : true, true, must_use_password, sub->name,
1964 : : &err);
636 akapila@postgresql.o 1965 [ - + ]:CBC 12 : if (!wrconn)
636 akapila@postgresql.o 1966 [ # # ]:UBC 0 : ereport(ERROR,
1967 : : (errcode(ERRCODE_CONNECTION_FAILURE),
1968 : : errmsg("subscription \"%s\" could not connect to the publisher: %s",
1969 : : sub->name, err)));
1970 : :
636 akapila@postgresql.o 1971 [ + - ]:CBC 12 : PG_TRY();
1972 : : {
96 akapila@postgresql.o 1973 [ + + ]:GNC 12 : if (retain_dead_tuples)
1974 : 8 : check_pub_dead_tuple_retention(wrconn);
1975 : :
4 1976 : 12 : check_publications_origin_tables(wrconn, sub->publications, false,
1977 : : retain_dead_tuples, origin, NULL, 0,
1978 : : sub->name);
1979 : :
96 1980 [ + + + + ]: 12 : if (update_failover || update_two_phase)
1981 [ + + + + ]: 5 : walrcv_alter_slot(wrconn, sub->slotname,
1982 : : update_failover ? &opts.failover : NULL,
1983 : : update_two_phase ? &opts.twophase : NULL);
1984 : : }
636 akapila@postgresql.o 1985 :UBC 0 : PG_FINALLY();
1986 : : {
636 akapila@postgresql.o 1987 :CBC 12 : walrcv_disconnect(wrconn);
1988 : : }
1989 [ - + ]: 12 : PG_END_TRY();
1990 : : }
1991 : :
2471 andres@anarazel.de 1992 : 201 : table_close(rel, RowExclusiveLock);
1993 : :
3140 peter_e@gmx.net 1994 : 201 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
1995 : :
3203 1996 [ - + ]: 201 : InvokeObjectPostAlterHook(SubscriptionRelationId, subid, 0);
1997 : :
1998 : : /* Wake up related replication workers to handle this change quickly. */
1025 tgl@sss.pgh.pa.us 1999 : 201 : LogicalRepWorkersWakeupAtCommit(subid);
2000 : :
3203 peter_e@gmx.net 2001 : 201 : return myself;
2002 : : }
2003 : :
2004 : : /*
2005 : : * Drop a subscription
2006 : : */
2007 : : void
3160 2008 : 122 : DropSubscription(DropSubscriptionStmt *stmt, bool isTopLevel)
2009 : : {
2010 : : Relation rel;
2011 : : ObjectAddress myself;
2012 : : HeapTuple tup;
2013 : : Oid subid;
2014 : : Oid subowner;
2015 : : Datum datum;
2016 : : bool isnull;
2017 : : char *subname;
2018 : : char *conninfo;
2019 : : char *slotname;
2020 : : List *subworkers;
2021 : : ListCell *lc;
2022 : : char originname[NAMEDATALEN];
3203 2023 : 122 : char *err = NULL;
2024 : : WalReceiverConn *wrconn;
2025 : : Form_pg_subscription form;
2026 : : List *rstates;
2027 : : bool must_use_password;
2028 : :
2029 : : /*
2030 : : * The launcher may concurrently start a new worker for this subscription.
2031 : : * During initialization, the worker checks for subscription validity and
2032 : : * exits if the subscription has already been dropped. See
2033 : : * InitializeLogRepWorker.
2034 : : */
69 akapila@postgresql.o 2035 : 122 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
2036 : :
80 peter@eisentraut.org 2037 :GNC 122 : tup = SearchSysCache2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
3203 peter_e@gmx.net 2038 :CBC 122 : CStringGetDatum(stmt->subname));
2039 : :
2040 [ + + ]: 122 : if (!HeapTupleIsValid(tup))
2041 : : {
2471 andres@anarazel.de 2042 : 6 : table_close(rel, NoLock);
2043 : :
3203 peter_e@gmx.net 2044 [ + + ]: 6 : if (!stmt->missing_ok)
2045 [ + - ]: 3 : ereport(ERROR,
2046 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
2047 : : errmsg("subscription \"%s\" does not exist",
2048 : : stmt->subname)));
2049 : : else
2050 [ + - ]: 3 : ereport(NOTICE,
2051 : : (errmsg("subscription \"%s\" does not exist, skipping",
2052 : : stmt->subname)));
2053 : :
2054 : 45 : return;
2055 : : }
2056 : :
2533 andres@anarazel.de 2057 : 116 : form = (Form_pg_subscription) GETSTRUCT(tup);
2058 : 116 : subid = form->oid;
942 rhaas@postgresql.org 2059 : 116 : subowner = form->subowner;
2060 [ + + + + ]: 116 : must_use_password = !superuser_arg(subowner) && form->subpasswordrequired;
2061 : :
2062 : : /* must be owner */
1079 peter@eisentraut.org 2063 [ - + ]: 116 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
2886 peter_e@gmx.net 2064 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
3203 2065 : 0 : stmt->subname);
2066 : :
2067 : : /* DROP hook for the subscription being removed */
3203 peter_e@gmx.net 2068 [ - + ]:CBC 116 : InvokeObjectDropHook(SubscriptionRelationId, subid, 0);
2069 : :
2070 : : /*
2071 : : * Lock the subscription so nobody else can do anything with it (including
2072 : : * the replication workers).
2073 : : */
2074 : 116 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
2075 : :
2076 : : /* Get subname */
947 dgustafsson@postgres 2077 : 116 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID, tup,
2078 : : Anum_pg_subscription_subname);
3203 peter_e@gmx.net 2079 : 116 : subname = pstrdup(NameStr(*DatumGetName(datum)));
2080 : :
2081 : : /* Get conninfo */
947 dgustafsson@postgres 2082 : 116 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID, tup,
2083 : : Anum_pg_subscription_subconninfo);
3118 peter_e@gmx.net 2084 : 116 : conninfo = TextDatumGetCString(datum);
2085 : :
2086 : : /* Get slotname */
3203 2087 : 116 : datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
2088 : : Anum_pg_subscription_subslotname, &isnull);
3093 2089 [ + + ]: 116 : if (!isnull)
2090 : 73 : slotname = pstrdup(NameStr(*DatumGetName(datum)));
2091 : : else
2092 : 43 : slotname = NULL;
2093 : :
2094 : : /*
2095 : : * Since dropping a replication slot is not transactional, the replication
2096 : : * slot stays dropped even if the transaction rolls back. So we cannot
2097 : : * run DROP SUBSCRIPTION inside a transaction block if dropping the
2098 : : * replication slot. Also, in this case, we report a message for dropping
2099 : : * the subscription to the cumulative stats system.
2100 : : *
2101 : : * XXX The command name should really be something like "DROP SUBSCRIPTION
2102 : : * of a subscription that is associated with a replication slot", but we
2103 : : * don't have the proper facilities for that.
2104 : : */
2105 [ + + ]: 116 : if (slotname)
2810 2106 : 73 : PreventInTransactionBlock(isTopLevel, "DROP SUBSCRIPTION");
2107 : :
3203 2108 : 113 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
2109 : 113 : EventTriggerSQLDropAddObject(&myself, true, true);
2110 : :
2111 : : /* Remove the tuple from catalog. */
3190 tgl@sss.pgh.pa.us 2112 : 113 : CatalogTupleDelete(rel, &tup->t_self);
2113 : :
3203 peter_e@gmx.net 2114 : 113 : ReleaseSysCache(tup);
2115 : :
2116 : : /*
2117 : : * Stop all the subscription workers immediately.
2118 : : *
2119 : : * This is necessary if we are dropping the replication slot, so that the
2120 : : * slot becomes accessible.
2121 : : *
2122 : : * It is also necessary if the subscription is disabled and was disabled
2123 : : * in the same transaction. Then the workers haven't seen the disabling
2124 : : * yet and will still be running, leading to hangs later when we want to
2125 : : * drop the replication origin. If the subscription was disabled before
2126 : : * this transaction, then there shouldn't be any workers left, so this
2127 : : * won't make a difference.
2128 : : *
2129 : : * New workers won't be started because we hold an exclusive lock on the
2130 : : * subscription till the end of the transaction.
2131 : : */
460 akapila@postgresql.o 2132 : 113 : subworkers = logicalrep_workers_find(subid, false, true);
2996 tgl@sss.pgh.pa.us 2133 [ + + + + : 186 : foreach(lc, subworkers)
+ + ]
2134 : : {
3006 peter_e@gmx.net 2135 : 73 : LogicalRepWorker *w = (LogicalRepWorker *) lfirst(lc);
2136 : :
2962 2137 : 73 : logicalrep_worker_stop(w->subid, w->relid);
2138 : : }
3006 2139 : 113 : list_free(subworkers);
2140 : :
2141 : : /*
2142 : : * Remove the no-longer-useful entry in the launcher's table of apply
2143 : : * worker start times.
2144 : : *
2145 : : * If this transaction rolls back, the launcher might restart a failed
2146 : : * apply worker before wal_retrieve_retry_interval milliseconds have
2147 : : * elapsed, but that's pretty harmless.
2148 : : */
1009 tgl@sss.pgh.pa.us 2149 : 113 : ApplyLauncherForgetWorkerStartTime(subid);
2150 : :
2151 : : /*
2152 : : * Cleanup of tablesync replication origins.
2153 : : *
2154 : : * Any READY-state relations would already have dealt with clean-ups.
2155 : : *
2156 : : * Note that the state can't change because we have already stopped both
2157 : : * the apply and tablesync workers and they can't restart because of
2158 : : * exclusive lock on the subscription.
2159 : : */
4 akapila@postgresql.o 2160 :GNC 113 : rstates = GetSubscriptionRelations(subid, true, false, true);
1718 akapila@postgresql.o 2161 [ + + + + :CBC 119 : foreach(lc, rstates)
+ + ]
2162 : : {
2163 : 6 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
2164 : 6 : Oid relid = rstate->relid;
2165 : :
2166 : : /* Only cleanup resources of tablesync workers */
2167 [ - + ]: 6 : if (!OidIsValid(relid))
1718 akapila@postgresql.o 2168 :UBC 0 : continue;
2169 : :
2170 : : /*
2171 : : * Drop the tablesync's origin tracking if exists.
2172 : : *
2173 : : * It is possible that the origin is not yet created for tablesync
2174 : : * worker so passing missing_ok = true. This can happen for the states
2175 : : * before SUBREL_STATE_FINISHEDCOPY.
2176 : : */
1112 akapila@postgresql.o 2177 :CBC 6 : ReplicationOriginNameForLogicalRep(subid, relid, originname,
2178 : : sizeof(originname));
1141 2179 : 6 : replorigin_drop_by_name(originname, true, false);
2180 : : }
2181 : :
2182 : : /* Clean up dependencies */
3202 alvherre@alvh.no-ip. 2183 : 113 : deleteSharedDependencyRecordsFor(SubscriptionRelationId, subid, 0);
2184 : :
2185 : : /* Remove any associated relation synchronization states. */
3140 peter_e@gmx.net 2186 : 113 : RemoveSubscriptionRel(subid, InvalidOid);
2187 : :
2188 : : /* Remove the origin tracking if exists. */
1112 akapila@postgresql.o 2189 : 113 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
1720 2190 : 113 : replorigin_drop_by_name(originname, true, false);
2191 : :
2192 : : /*
2193 : : * Tell the cumulative stats system that the subscription is getting
2194 : : * dropped.
2195 : : */
845 msawada@postgresql.o 2196 : 113 : pgstat_drop_subscription(subid);
2197 : :
2198 : : /*
2199 : : * If there is no slot associated with the subscription, we can finish
2200 : : * here.
2201 : : */
1718 akapila@postgresql.o 2202 [ + + + + ]: 113 : if (!slotname && rstates == NIL)
2203 : : {
2471 andres@anarazel.de 2204 : 42 : table_close(rel, NoLock);
3203 peter_e@gmx.net 2205 : 42 : return;
2206 : : }
2207 : :
2208 : : /*
2209 : : * Try to acquire the connection necessary for dropping slots.
2210 : : *
2211 : : * Note: If the slotname is NONE/NULL then we allow the command to finish
2212 : : * and users need to manually cleanup the apply and tablesync worker slots
2213 : : * later.
2214 : : *
2215 : : * This has to be at the end because otherwise if there is an error while
2216 : : * doing the database operations we won't be able to rollback dropped
2217 : : * slot.
2218 : : */
2219 : 71 : load_file("libpqwalreceiver", false);
2220 : :
630 akapila@postgresql.o 2221 : 71 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
2222 : : subname, &err);
3203 peter_e@gmx.net 2223 [ - + ]: 71 : if (wrconn == NULL)
2224 : : {
1718 akapila@postgresql.o 2225 [ # # ]:UBC 0 : if (!slotname)
2226 : : {
2227 : : /* be tidy */
2228 : 0 : list_free(rstates);
2229 : 0 : table_close(rel, NoLock);
2230 : 0 : return;
2231 : : }
2232 : : else
2233 : : {
2234 : 0 : ReportSlotConnectionError(rstates, subid, slotname, err);
2235 : : }
2236 : : }
2237 : :
1718 akapila@postgresql.o 2238 [ + + ]:CBC 71 : PG_TRY();
2239 : : {
2240 [ + + + + : 77 : foreach(lc, rstates)
+ + ]
2241 : : {
2242 : 6 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
2243 : 6 : Oid relid = rstate->relid;
2244 : :
2245 : : /* Only cleanup resources of tablesync workers */
2246 [ - + ]: 6 : if (!OidIsValid(relid))
1718 akapila@postgresql.o 2247 :UBC 0 : continue;
2248 : :
2249 : : /*
2250 : : * Drop the tablesync slots associated with removed tables.
2251 : : *
2252 : : * For SYNCDONE/READY states, the tablesync slot is known to have
2253 : : * already been dropped by the tablesync worker.
2254 : : *
2255 : : * For other states, there is no certainty, maybe the slot does
2256 : : * not exist yet. Also, if we fail after removing some of the
2257 : : * slots, next time, it will again try to drop already dropped
2258 : : * slots and fail. For these reasons, we allow missing_ok = true
2259 : : * for the drop.
2260 : : */
1718 akapila@postgresql.o 2261 [ + + ]:CBC 6 : if (rstate->state != SUBREL_STATE_SYNCDONE)
2262 : : {
2263 : 5 : char syncslotname[NAMEDATALEN] = {0};
2264 : :
1715 2265 : 5 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
2266 : : sizeof(syncslotname));
1718 2267 : 5 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
2268 : : }
2269 : : }
2270 : :
2271 : 71 : list_free(rstates);
2272 : :
2273 : : /*
2274 : : * If there is a slot associated with the subscription, then drop the
2275 : : * replication slot at the publisher.
2276 : : */
2277 [ + + ]: 71 : if (slotname)
2278 : 70 : ReplicationSlotDropAtPubNode(wrconn, slotname, false);
2279 : : }
2280 : 1 : PG_FINALLY();
2281 : : {
2282 : 71 : walrcv_disconnect(wrconn);
2283 : : }
2284 [ + + ]: 71 : PG_END_TRY();
2285 : :
2286 : 70 : table_close(rel, NoLock);
2287 : : }
2288 : :
2289 : : /*
2290 : : * Drop the replication slot at the publisher node using the replication
2291 : : * connection.
2292 : : *
2293 : : * missing_ok - if true then only issue a LOG message if the slot doesn't
2294 : : * exist.
2295 : : */
2296 : : void
2297 : 265 : ReplicationSlotDropAtPubNode(WalReceiverConn *wrconn, char *slotname, bool missing_ok)
2298 : : {
2299 : : StringInfoData cmd;
2300 : :
2301 [ - + ]: 265 : Assert(wrconn);
2302 : :
2303 : 265 : load_file("libpqwalreceiver", false);
2304 : :
2305 : 265 : initStringInfo(&cmd);
2306 : 265 : appendStringInfo(&cmd, "DROP_REPLICATION_SLOT %s WAIT", quote_identifier(slotname));
2307 : :
3155 fujii@postgresql.org 2308 [ + + ]: 265 : PG_TRY();
2309 : : {
2310 : : WalRcvExecResult *res;
2311 : :
3140 peter_e@gmx.net 2312 : 265 : res = walrcv_exec(wrconn, cmd.data, 0, NULL);
2313 : :
1718 akapila@postgresql.o 2314 [ + + ]: 265 : if (res->status == WALRCV_OK_COMMAND)
2315 : : {
2316 : : /* NOTICE. Success. */
2317 [ + + ]: 263 : ereport(NOTICE,
2318 : : (errmsg("dropped replication slot \"%s\" on publisher",
2319 : : slotname)));
2320 : : }
2321 [ + - + + ]: 2 : else if (res->status == WALRCV_ERROR &&
2322 : 1 : missing_ok &&
2323 [ + - ]: 1 : res->sqlstate == ERRCODE_UNDEFINED_OBJECT)
2324 : : {
2325 : : /* LOG. Error, but missing_ok = true. */
2326 [ + - ]: 1 : ereport(LOG,
2327 : : (errmsg("could not drop replication slot \"%s\" on publisher: %s",
2328 : : slotname, res->err)));
2329 : : }
2330 : : else
2331 : : {
2332 : : /* ERROR. */
2333 [ + - ]: 1 : ereport(ERROR,
2334 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2335 : : errmsg("could not drop replication slot \"%s\" on publisher: %s",
2336 : : slotname, res->err)));
2337 : : }
2338 : :
3140 peter_e@gmx.net 2339 : 264 : walrcv_clear_result(res);
2340 : : }
2187 peter@eisentraut.org 2341 : 1 : PG_FINALLY();
2342 : : {
1718 akapila@postgresql.o 2343 : 265 : pfree(cmd.data);
2344 : : }
3155 fujii@postgresql.org 2345 [ + + ]: 265 : PG_END_TRY();
3203 peter_e@gmx.net 2346 : 264 : }
2347 : :
2348 : : /*
2349 : : * Internal workhorse for changing a subscription owner
2350 : : */
2351 : : static void
2352 : 9 : AlterSubscriptionOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
2353 : : {
2354 : : Form_pg_subscription form;
2355 : : AclResult aclresult;
2356 : :
2357 : 9 : form = (Form_pg_subscription) GETSTRUCT(tup);
2358 : :
2359 [ + + ]: 9 : if (form->subowner == newOwnerId)
2360 : 2 : return;
2361 : :
1079 peter@eisentraut.org 2362 [ - + ]: 7 : if (!object_ownercheck(SubscriptionRelationId, form->oid, GetUserId()))
2886 peter_e@gmx.net 2363 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
3203 2364 : 0 : NameStr(form->subname));
2365 : :
2366 : : /*
2367 : : * Don't allow non-superuser modification of a subscription with
2368 : : * password_required=false.
2369 : : */
942 rhaas@postgresql.org 2370 [ - + - - ]:CBC 7 : if (!form->subpasswordrequired && !superuser())
3203 peter_e@gmx.net 2371 [ # # ]:UBC 0 : ereport(ERROR,
2372 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2373 : : errmsg("password_required=false is superuser-only"),
2374 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
2375 : :
2376 : : /* Must be able to become new owner */
942 rhaas@postgresql.org 2377 :CBC 7 : check_can_set_role(GetUserId(), newOwnerId);
2378 : :
2379 : : /*
2380 : : * current owner must have CREATE on database
2381 : : *
2382 : : * This is consistent with how ALTER SCHEMA ... OWNER TO works, but some
2383 : : * other object types behave differently (e.g. you can't give a table to a
2384 : : * user who lacks CREATE privileges on a schema).
2385 : : */
2386 : 4 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
2387 : : GetUserId(), ACL_CREATE);
2388 [ - + ]: 4 : if (aclresult != ACLCHECK_OK)
942 rhaas@postgresql.org 2389 :UBC 0 : aclcheck_error(aclresult, OBJECT_DATABASE,
2390 : 0 : get_database_name(MyDatabaseId));
2391 : :
3203 peter_e@gmx.net 2392 :CBC 4 : form->subowner = newOwnerId;
3191 alvherre@alvh.no-ip. 2393 : 4 : CatalogTupleUpdate(rel, &tup->t_self, tup);
2394 : :
2395 : : /* Update owner dependency reference */
3203 peter_e@gmx.net 2396 : 4 : changeDependencyOnOwner(SubscriptionRelationId,
2397 : : form->oid,
2398 : : newOwnerId);
2399 : :
2400 [ - + ]: 4 : InvokeObjectPostAlterHook(SubscriptionRelationId,
2401 : : form->oid, 0);
2402 : :
2403 : : /* Wake up related background processes to handle this change quickly. */
1389 jdavis@postgresql.or 2404 : 4 : ApplyLauncherWakeupAtCommit();
1025 tgl@sss.pgh.pa.us 2405 : 4 : LogicalRepWorkersWakeupAtCommit(form->oid);
2406 : : }
2407 : :
2408 : : /*
2409 : : * Change subscription owner -- by name
2410 : : */
2411 : : ObjectAddress
3203 peter_e@gmx.net 2412 : 9 : AlterSubscriptionOwner(const char *name, Oid newOwnerId)
2413 : : {
2414 : : Oid subid;
2415 : : HeapTuple tup;
2416 : : Relation rel;
2417 : : ObjectAddress address;
2418 : : Form_pg_subscription form;
2419 : :
2471 andres@anarazel.de 2420 : 9 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
2421 : :
80 peter@eisentraut.org 2422 :GNC 9 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, ObjectIdGetDatum(MyDatabaseId),
2423 : : CStringGetDatum(name));
2424 : :
3203 peter_e@gmx.net 2425 [ - + ]:CBC 9 : if (!HeapTupleIsValid(tup))
3203 peter_e@gmx.net 2426 [ # # ]:UBC 0 : ereport(ERROR,
2427 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
2428 : : errmsg("subscription \"%s\" does not exist", name)));
2429 : :
2533 andres@anarazel.de 2430 :CBC 9 : form = (Form_pg_subscription) GETSTRUCT(tup);
2431 : 9 : subid = form->oid;
2432 : :
3203 peter_e@gmx.net 2433 : 9 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
2434 : :
2435 : 6 : ObjectAddressSet(address, SubscriptionRelationId, subid);
2436 : :
2437 : 6 : heap_freetuple(tup);
2438 : :
2471 andres@anarazel.de 2439 : 6 : table_close(rel, RowExclusiveLock);
2440 : :
3203 peter_e@gmx.net 2441 : 6 : return address;
2442 : : }
2443 : :
2444 : : /*
2445 : : * Change subscription owner -- by OID
2446 : : */
2447 : : void
3203 peter_e@gmx.net 2448 :UBC 0 : AlterSubscriptionOwner_oid(Oid subid, Oid newOwnerId)
2449 : : {
2450 : : HeapTuple tup;
2451 : : Relation rel;
2452 : :
2471 andres@anarazel.de 2453 : 0 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
2454 : :
3203 peter_e@gmx.net 2455 : 0 : tup = SearchSysCacheCopy1(SUBSCRIPTIONOID, ObjectIdGetDatum(subid));
2456 : :
2457 [ # # ]: 0 : if (!HeapTupleIsValid(tup))
2458 [ # # ]: 0 : ereport(ERROR,
2459 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
2460 : : errmsg("subscription with OID %u does not exist", subid)));
2461 : :
2462 : 0 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
2463 : :
2464 : 0 : heap_freetuple(tup);
2465 : :
2471 andres@anarazel.de 2466 : 0 : table_close(rel, RowExclusiveLock);
3203 peter_e@gmx.net 2467 : 0 : }
2468 : :
2469 : : /*
2470 : : * Check and log a warning if the publisher has subscribed to the same table,
2471 : : * its partition ancestors (if it's a partition), or its partition children (if
2472 : : * it's a partitioned table), from some other publishers. This check is
2473 : : * required in the following scenarios:
2474 : : *
2475 : : * 1) For CREATE SUBSCRIPTION and ALTER SUBSCRIPTION ... REFRESH PUBLICATION
2476 : : * statements with "copy_data = true" and "origin = none":
2477 : : * - Warn the user that data with an origin might have been copied.
2478 : : * - This check is skipped for tables already added, as incremental sync via
2479 : : * WAL allows origin tracking. The list of such tables is in
2480 : : * subrel_local_oids.
2481 : : *
2482 : : * 2) For CREATE SUBSCRIPTION and ALTER SUBSCRIPTION ... REFRESH PUBLICATION
2483 : : * statements with "retain_dead_tuples = true" and "origin = any", and for
2484 : : * ALTER SUBSCRIPTION statements that modify retain_dead_tuples or origin,
2485 : : * or when the publisher's status changes (e.g., due to a connection string
2486 : : * update):
2487 : : * - Warn the user that only conflict detection info for local changes on
2488 : : * the publisher is retained. Data from other origins may lack sufficient
2489 : : * details for reliable conflict detection.
2490 : : * - See comments atop worker.c for more details.
2491 : : */
2492 : : static void
4 akapila@postgresql.o 2493 :GNC 164 : check_publications_origin_tables(WalReceiverConn *wrconn, List *publications,
2494 : : bool copydata, bool retain_dead_tuples,
2495 : : char *origin, Oid *subrel_local_oids,
2496 : : int subrel_count, char *subname)
2497 : : {
2498 : : WalRcvExecResult *res;
2499 : : StringInfoData cmd;
2500 : : TupleTableSlot *slot;
1145 akapila@postgresql.o 2501 :CBC 164 : Oid tableRow[1] = {TEXTOID};
2502 : 164 : List *publist = NIL;
2503 : : int i;
2504 : : bool check_rdt;
2505 : : bool check_table_sync;
96 akapila@postgresql.o 2506 [ + - + + ]:GNC 328 : bool origin_none = origin &&
2507 : 164 : pg_strcasecmp(origin, LOGICALREP_ORIGIN_NONE) == 0;
2508 : :
2509 : : /*
2510 : : * Enable retain_dead_tuples checks only when origin is set to 'any',
2511 : : * since with origin='none' only local changes are replicated to the
2512 : : * subscriber.
2513 : : */
2514 [ + + + + ]: 164 : check_rdt = retain_dead_tuples && !origin_none;
2515 : :
2516 : : /*
2517 : : * Enable table synchronization checks only when origin is 'none', to
2518 : : * ensure that data from other origins is not inadvertently copied.
2519 : : */
2520 [ + + + + ]: 164 : check_table_sync = copydata && origin_none;
2521 : :
2522 : : /* retain_dead_tuples and table sync checks occur separately */
2523 [ + + - + ]: 164 : Assert(!(check_rdt && check_table_sync));
2524 : :
2525 : : /* Return if no checks are required */
2526 [ + + + + ]: 164 : if (!check_rdt && !check_table_sync)
1145 akapila@postgresql.o 2527 :CBC 150 : return;
2528 : :
2529 : 14 : initStringInfo(&cmd);
2530 : 14 : appendStringInfoString(&cmd,
2531 : : "SELECT DISTINCT P.pubname AS pubname\n"
2532 : : "FROM pg_publication P,\n"
2533 : : " LATERAL pg_get_publication_tables(P.pubname) GPT\n"
2534 : : " JOIN pg_subscription_rel PS ON (GPT.relid = PS.srrelid OR"
2535 : : " GPT.relid IN (SELECT relid FROM pg_partition_ancestors(PS.srrelid) UNION"
2536 : : " SELECT relid FROM pg_partition_tree(PS.srrelid))),\n"
2537 : : " pg_class C JOIN pg_namespace N ON (N.oid = C.relnamespace)\n"
2538 : : "WHERE C.oid = GPT.relid AND P.pubname IN (");
367 michael@paquier.xyz 2539 : 14 : GetPublicationsStr(publications, &cmd, true);
1145 akapila@postgresql.o 2540 : 14 : appendStringInfoString(&cmd, ")\n");
2541 : :
2542 : : /*
2543 : : * In case of ALTER SUBSCRIPTION ... REFRESH PUBLICATION,
2544 : : * subrel_local_oids contains the list of relation oids that are already
2545 : : * present on the subscriber. This check should be skipped for these
2546 : : * tables if checking for table sync scenario. However, when handling the
2547 : : * retain_dead_tuples scenario, ensure all tables are checked, as some
2548 : : * existing tables may now include changes from other origins due to newly
2549 : : * created subscriptions on the publisher.
2550 : : */
96 akapila@postgresql.o 2551 [ + + ]:GNC 14 : if (check_table_sync)
2552 : : {
2553 [ + + ]: 14 : for (i = 0; i < subrel_count; i++)
2554 : : {
2555 : 4 : Oid relid = subrel_local_oids[i];
2556 : 4 : char *schemaname = get_namespace_name(get_rel_namespace(relid));
2557 : 4 : char *tablename = get_rel_name(relid);
2558 : :
2559 : 4 : appendStringInfo(&cmd, "AND NOT (N.nspname = '%s' AND C.relname = '%s')\n",
2560 : : schemaname, tablename);
2561 : : }
2562 : : }
2563 : :
1145 akapila@postgresql.o 2564 :CBC 14 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
2565 : 14 : pfree(cmd.data);
2566 : :
2567 [ - + ]: 14 : if (res->status != WALRCV_OK_TUPLES)
1145 akapila@postgresql.o 2568 [ # # ]:UBC 0 : ereport(ERROR,
2569 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2570 : : errmsg("could not receive list of replicated tables from the publisher: %s",
2571 : : res->err)));
2572 : :
2573 : : /* Process publications. */
1145 akapila@postgresql.o 2574 :CBC 14 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
2575 [ + + ]: 19 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
2576 : : {
2577 : : char *pubname;
2578 : : bool isnull;
2579 : :
2580 : 5 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
2581 [ - + ]: 5 : Assert(!isnull);
2582 : :
2583 : 5 : ExecClearTuple(slot);
2584 : 5 : publist = list_append_unique(publist, makeString(pubname));
2585 : : }
2586 : :
2587 : : /*
2588 : : * Log a warning if the publisher has subscribed to the same table from
2589 : : * some other publisher. We cannot know the origin of data during the
2590 : : * initial sync. Data origins can be found only from the WAL by looking at
2591 : : * the origin id.
2592 : : *
2593 : : * XXX: For simplicity, we don't check whether the table has any data or
2594 : : * not. If the table doesn't have any data then we don't need to
2595 : : * distinguish between data having origin and data not having origin so we
2596 : : * can avoid logging a warning for table sync scenario.
2597 : : */
2598 [ + + ]: 14 : if (publist)
2599 : : {
2600 : 5 : StringInfo pubnames = makeStringInfo();
96 akapila@postgresql.o 2601 :GNC 5 : StringInfo err_msg = makeStringInfo();
2602 : 5 : StringInfo err_hint = makeStringInfo();
2603 : :
2604 : : /* Prepare the list of publication(s) for warning message. */
367 michael@paquier.xyz 2605 :CBC 5 : GetPublicationsStr(publist, pubnames, false);
2606 : :
96 akapila@postgresql.o 2607 [ + + ]:GNC 5 : if (check_table_sync)
2608 : : {
2609 : 4 : appendStringInfo(err_msg, _("subscription \"%s\" requested copy_data with origin = NONE but might copy data that had a different origin"),
2610 : : subname);
2611 : 4 : appendStringInfoString(err_hint, _("Verify that initial data copied from the publisher tables did not come from other origins."));
2612 : : }
2613 : : else
2614 : : {
2615 : 1 : appendStringInfo(err_msg, _("subscription \"%s\" enabled retain_dead_tuples but might not reliably detect conflicts for changes from different origins"),
2616 : : subname);
2617 : 1 : appendStringInfoString(err_hint, _("Consider using origin = NONE or disabling retain_dead_tuples."));
2618 : : }
2619 : :
1145 akapila@postgresql.o 2620 [ + - ]:CBC 5 : ereport(WARNING,
2621 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2622 : : errmsg_internal("%s", err_msg->data),
2623 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains tables that are written to by other subscriptions.",
2624 : : "The subscription subscribes to publications (%s) that contain tables that are written to by other subscriptions.",
2625 : : list_length(publist), pubnames->data),
2626 : : errhint_internal("%s", err_hint->data));
2627 : : }
2628 : :
2629 : 14 : ExecDropSingleTupleTableSlot(slot);
2630 : :
2631 : 14 : walrcv_clear_result(res);
2632 : : }
2633 : :
2634 : : /*
2635 : : * This function is similar to check_publications_origin_tables and serves
2636 : : * same purpose for sequences.
2637 : : */
2638 : : static void
4 akapila@postgresql.o 2639 :GNC 152 : check_publications_origin_sequences(WalReceiverConn *wrconn, List *publications,
2640 : : bool copydata, char *origin,
2641 : : Oid *subrel_local_oids, int subrel_count,
2642 : : char *subname)
2643 : : {
2644 : : WalRcvExecResult *res;
2645 : : StringInfoData cmd;
2646 : : TupleTableSlot *slot;
2647 : 152 : Oid tableRow[1] = {TEXTOID};
2648 : 152 : List *publist = NIL;
2649 : :
2650 : : /*
2651 : : * Enable sequence synchronization checks only when origin is 'none' , to
2652 : : * ensure that sequence data from other origins is not inadvertently
2653 : : * copied.
2654 : : */
2655 [ + + + + ]: 152 : if (!copydata || pg_strcasecmp(origin, LOGICALREP_ORIGIN_NONE) != 0)
2656 : 142 : return;
2657 : :
2658 : 10 : initStringInfo(&cmd);
2659 : 10 : appendStringInfoString(&cmd,
2660 : : "SELECT DISTINCT P.pubname AS pubname\n"
2661 : : "FROM pg_publication P,\n"
2662 : : " LATERAL pg_get_publication_sequences(P.pubname) GPS\n"
2663 : : " JOIN pg_subscription_rel PS ON (GPS.relid = PS.srrelid),\n"
2664 : : " pg_class C JOIN pg_namespace N ON (N.oid = C.relnamespace)\n"
2665 : : "WHERE C.oid = GPS.relid AND P.pubname IN (");
2666 : :
2667 : 10 : GetPublicationsStr(publications, &cmd, true);
2668 : 10 : appendStringInfoString(&cmd, ")\n");
2669 : :
2670 : : /*
2671 : : * In case of ALTER SUBSCRIPTION ... REFRESH PUBLICATION,
2672 : : * subrel_local_oids contains the list of relations that are already
2673 : : * present on the subscriber. This check should be skipped as these will
2674 : : * not be re-synced.
2675 : : */
2676 [ - + ]: 10 : for (int i = 0; i < subrel_count; i++)
2677 : : {
4 akapila@postgresql.o 2678 :UNC 0 : Oid relid = subrel_local_oids[i];
2679 : 0 : char *schemaname = get_namespace_name(get_rel_namespace(relid));
2680 : 0 : char *seqname = get_rel_name(relid);
2681 : :
2682 : 0 : appendStringInfo(&cmd,
2683 : : "AND NOT (N.nspname = '%s' AND C.relname = '%s')\n",
2684 : : schemaname, seqname);
2685 : : }
2686 : :
4 akapila@postgresql.o 2687 :GNC 10 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
2688 : 10 : pfree(cmd.data);
2689 : :
2690 [ - + ]: 10 : if (res->status != WALRCV_OK_TUPLES)
4 akapila@postgresql.o 2691 [ # # ]:UNC 0 : ereport(ERROR,
2692 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2693 : : errmsg("could not receive list of replicated sequences from the publisher: %s",
2694 : : res->err)));
2695 : :
2696 : : /* Process publications. */
4 akapila@postgresql.o 2697 :GNC 10 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
2698 [ - + ]: 10 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
2699 : : {
2700 : : char *pubname;
2701 : : bool isnull;
2702 : :
4 akapila@postgresql.o 2703 :UNC 0 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
2704 [ # # ]: 0 : Assert(!isnull);
2705 : :
2706 : 0 : ExecClearTuple(slot);
2707 : 0 : publist = list_append_unique(publist, makeString(pubname));
2708 : : }
2709 : :
2710 : : /*
2711 : : * Log a warning if the publisher has subscribed to the same sequence from
2712 : : * some other publisher. We cannot know the origin of sequences data
2713 : : * during the initial sync.
2714 : : */
4 akapila@postgresql.o 2715 [ - + ]:GNC 10 : if (publist)
2716 : : {
4 akapila@postgresql.o 2717 :UNC 0 : StringInfo pubnames = makeStringInfo();
2718 : 0 : StringInfo err_msg = makeStringInfo();
2719 : 0 : StringInfo err_hint = makeStringInfo();
2720 : :
2721 : : /* Prepare the list of publication(s) for warning message. */
2722 : 0 : GetPublicationsStr(publist, pubnames, false);
2723 : :
2724 : 0 : appendStringInfo(err_msg, _("subscription \"%s\" requested copy_data with origin = NONE but might copy data that had a different origin"),
2725 : : subname);
2726 : 0 : appendStringInfoString(err_hint, _("Verify that initial data copied from the publisher sequences did not come from other origins."));
2727 : :
2728 [ # # ]: 0 : ereport(WARNING,
2729 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2730 : : errmsg_internal("%s", err_msg->data),
2731 : : errdetail_plural("The subscription subscribes to a publication (%s) that contains sequences that are written to by other subscriptions.",
2732 : : "The subscription subscribes to publications (%s) that contain sequences that are written to by other subscriptions.",
2733 : : list_length(publist), pubnames->data),
2734 : : errhint_internal("%s", err_hint->data));
2735 : : }
2736 : :
4 akapila@postgresql.o 2737 :GNC 10 : ExecDropSingleTupleTableSlot(slot);
2738 : :
2739 : 10 : walrcv_clear_result(res);
2740 : : }
2741 : :
2742 : : /*
2743 : : * Determine whether the retain_dead_tuples can be enabled based on the
2744 : : * publisher's status.
2745 : : *
2746 : : * This option is disallowed if the publisher is running a version earlier
2747 : : * than the PG19, or if the publisher is in recovery (i.e., it is a standby
2748 : : * server).
2749 : : *
2750 : : * See comments atop worker.c for a detailed explanation.
2751 : : */
2752 : : static void
96 2753 : 11 : check_pub_dead_tuple_retention(WalReceiverConn *wrconn)
2754 : : {
2755 : : WalRcvExecResult *res;
2756 : 11 : Oid RecoveryRow[1] = {BOOLOID};
2757 : : TupleTableSlot *slot;
2758 : : bool isnull;
2759 : : bool remote_in_recovery;
2760 : :
2761 [ - + ]: 11 : if (walrcv_server_version(wrconn) < 19000)
96 akapila@postgresql.o 2762 [ # # ]:UNC 0 : ereport(ERROR,
2763 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2764 : : errmsg("cannot enable retain_dead_tuples if the publisher is running a version earlier than PostgreSQL 19"));
2765 : :
96 akapila@postgresql.o 2766 :GNC 11 : res = walrcv_exec(wrconn, "SELECT pg_is_in_recovery()", 1, RecoveryRow);
2767 : :
2768 [ - + ]: 11 : if (res->status != WALRCV_OK_TUPLES)
96 akapila@postgresql.o 2769 [ # # ]:UNC 0 : ereport(ERROR,
2770 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2771 : : errmsg("could not obtain recovery progress from the publisher: %s",
2772 : : res->err)));
2773 : :
96 akapila@postgresql.o 2774 :GNC 11 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
2775 [ - + ]: 11 : if (!tuplestore_gettupleslot(res->tuplestore, true, false, slot))
96 akapila@postgresql.o 2776 [ # # ]:UNC 0 : elog(ERROR, "failed to fetch tuple for the recovery progress");
2777 : :
96 akapila@postgresql.o 2778 :GNC 11 : remote_in_recovery = DatumGetBool(slot_getattr(slot, 1, &isnull));
2779 : :
2780 [ - + ]: 11 : if (remote_in_recovery)
96 akapila@postgresql.o 2781 [ # # ]:UNC 0 : ereport(ERROR,
2782 : : errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2783 : : errmsg("cannot enable retain_dead_tuples if the publisher is in recovery."));
2784 : :
96 akapila@postgresql.o 2785 :GNC 11 : ExecDropSingleTupleTableSlot(slot);
2786 : :
2787 : 11 : walrcv_clear_result(res);
2788 : 11 : }
2789 : :
2790 : : /*
2791 : : * Check if the subscriber's configuration is adequate to enable the
2792 : : * retain_dead_tuples option.
2793 : : *
2794 : : * Issue an ERROR if the wal_level does not support the use of replication
2795 : : * slots when check_guc is set to true.
2796 : : *
2797 : : * Issue a WARNING if track_commit_timestamp is not enabled when check_guc is
2798 : : * set to true. This is only to highlight the importance of enabling
2799 : : * track_commit_timestamp instead of catching all the misconfigurations, as
2800 : : * this setting can be adjusted after subscription creation. Without it, the
2801 : : * apply worker will simply skip conflict detection.
2802 : : *
2803 : : * Issue a WARNING or NOTICE if the subscription is disabled and the retention
2804 : : * is active. Do not raise an ERROR since users can only modify
2805 : : * retain_dead_tuples for disabled subscriptions. And as long as the
2806 : : * subscription is enabled promptly, it will not pose issues.
2807 : : *
2808 : : * Issue a NOTICE to inform users that max_retention_duration is
2809 : : * ineffective when retain_dead_tuples is disabled for a subscription. An ERROR
2810 : : * is not issued because setting max_retention_duration causes no harm,
2811 : : * even when it is ineffective.
2812 : : */
2813 : : void
2814 : 237 : CheckSubDeadTupleRetention(bool check_guc, bool sub_disabled,
2815 : : int elevel_for_sub_disabled,
2816 : : bool retain_dead_tuples, bool retention_active,
2817 : : bool max_retention_set)
2818 : : {
2819 [ + + - + ]: 237 : Assert(elevel_for_sub_disabled == NOTICE ||
2820 : : elevel_for_sub_disabled == WARNING);
2821 : :
55 2822 [ + + ]: 237 : if (retain_dead_tuples)
2823 : : {
2824 [ + + - + ]: 15 : if (check_guc && wal_level < WAL_LEVEL_REPLICA)
55 akapila@postgresql.o 2825 [ # # ]:UNC 0 : ereport(ERROR,
2826 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2827 : : errmsg("\"wal_level\" is insufficient to create the replication slot required by retain_dead_tuples"),
2828 : : errhint("\"wal_level\" must be set to \"replica\" or \"logical\" at server start."));
2829 : :
55 akapila@postgresql.o 2830 [ + + + + ]:GNC 15 : if (check_guc && !track_commit_timestamp)
2831 [ + - ]: 4 : ereport(WARNING,
2832 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2833 : : errmsg("commit timestamp and origin data required for detecting conflicts won't be retained"),
2834 : : errhint("Consider setting \"%s\" to true.",
2835 : : "track_commit_timestamp"));
2836 : :
2837 [ + + + - ]: 15 : if (sub_disabled && retention_active)
2838 [ + - + + ]: 6 : ereport(elevel_for_sub_disabled,
2839 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2840 : : errmsg("deleted rows to detect conflicts would not be removed until the subscription is enabled"),
2841 : : (elevel_for_sub_disabled > NOTICE)
2842 : : ? errhint("Consider setting %s to false.",
2843 : : "retain_dead_tuples") : 0);
2844 : : }
2845 [ + + ]: 222 : else if (max_retention_set)
2846 : : {
2847 [ + - ]: 3 : ereport(NOTICE,
2848 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
2849 : : errmsg("max_retention_duration is ineffective when retain_dead_tuples is disabled"));
2850 : : }
96 2851 : 237 : }
2852 : :
2853 : : /*
2854 : : * Return true iff 'rv' is a member of the list.
2855 : : */
2856 : : static bool
4 2857 : 270 : list_member_rangevar(const List *list, RangeVar *rv)
2858 : : {
2859 [ + + + + : 996 : foreach_ptr(PublicationRelKind, relinfo, list)
+ + ]
2860 : : {
2861 [ + + ]: 458 : if (equal(relinfo->rv, rv))
2862 : 1 : return true;
2863 : : }
2864 : :
2865 : 269 : return false;
2866 : : }
2867 : :
2868 : : /*
2869 : : * Get the list of tables and sequences which belong to specified publications
2870 : : * on the publisher connection.
2871 : : *
2872 : : * Note that we don't support the case where the column list is different for
2873 : : * the same table in different publications to avoid sending unwanted column
2874 : : * information for some of the rows. This can happen when both the column
2875 : : * list and row filter are specified for different publications.
2876 : : */
2877 : : static List *
2878 : 152 : fetch_relation_list(WalReceiverConn *wrconn, List *publications)
2879 : : {
2880 : : WalRcvExecResult *res;
2881 : : StringInfoData cmd;
2882 : : TupleTableSlot *slot;
2883 : 152 : Oid tableRow[4] = {TEXTOID, TEXTOID, CHAROID, InvalidOid};
2884 : 152 : List *relationlist = NIL;
943 akapila@postgresql.o 2885 :CBC 152 : int server_version = walrcv_server_version(wrconn);
2886 : 152 : bool check_columnlist = (server_version >= 150000);
4 akapila@postgresql.o 2887 [ + - ]:GNC 152 : int column_count = check_columnlist ? 4 : 3;
367 michael@paquier.xyz 2888 :CBC 152 : StringInfo pub_names = makeStringInfo();
2889 : :
3140 peter_e@gmx.net 2890 : 152 : initStringInfo(&cmd);
2891 : :
2892 : : /* Build the pub_names comma-separated string. */
367 michael@paquier.xyz 2893 : 152 : GetPublicationsStr(publications, pub_names, true);
2894 : :
2895 : : /* Get the list of relations from the publisher */
943 akapila@postgresql.o 2896 [ + - ]: 152 : if (server_version >= 160000)
2897 : : {
4 akapila@postgresql.o 2898 :GNC 152 : tableRow[3] = INT2VECTOROID;
2899 : :
2900 : : /*
2901 : : * From version 16, we allowed passing multiple publications to the
2902 : : * function pg_get_publication_tables. This helped to filter out the
2903 : : * partition table whose ancestor is also published in this
2904 : : * publication array.
2905 : : *
2906 : : * Join pg_get_publication_tables with pg_publication to exclude
2907 : : * non-existing publications.
2908 : : *
2909 : : * Note that attrs are always stored in sorted order so we don't need
2910 : : * to worry if different publications have specified them in a
2911 : : * different order. See pub_collist_validate.
2912 : : */
2913 : 152 : appendStringInfo(&cmd, "SELECT DISTINCT n.nspname, c.relname, c.relkind, gpt.attrs\n"
2914 : : " FROM pg_class c\n"
2915 : : " JOIN pg_namespace n ON n.oid = c.relnamespace\n"
2916 : : " JOIN ( SELECT (pg_get_publication_tables(VARIADIC array_agg(pubname::text))).*\n"
2917 : : " FROM pg_publication\n"
2918 : : " WHERE pubname IN ( %s )) AS gpt\n"
2919 : : " ON gpt.relid = c.oid\n",
2920 : : pub_names->data);
2921 : :
2922 : : /* From version 19, inclusion of sequences in the target is supported */
2923 [ + - ]: 152 : if (server_version >= 190000)
2924 : 152 : appendStringInfo(&cmd,
2925 : : "UNION ALL\n"
2926 : : " SELECT DISTINCT s.schemaname, s.sequencename, " CppAsString2(RELKIND_SEQUENCE) "::\"char\" AS relkind, NULL::int2vector AS attrs\n"
2927 : : " FROM pg_catalog.pg_publication_sequences s\n"
2928 : : " WHERE s.pubname IN ( %s )",
2929 : : pub_names->data);
2930 : : }
2931 : : else
2932 : : {
4 akapila@postgresql.o 2933 :UNC 0 : tableRow[3] = NAMEARRAYOID;
2934 : 0 : appendStringInfoString(&cmd, "SELECT DISTINCT t.schemaname, t.tablename, " CppAsString2(RELKIND_RELATION) "::\"char\" AS relkind \n");
2935 : :
2936 : : /* Get column lists for each relation if the publisher supports it */
943 akapila@postgresql.o 2937 [ # # ]:UBC 0 : if (check_columnlist)
2938 : 0 : appendStringInfoString(&cmd, ", t.attnames\n");
2939 : :
367 michael@paquier.xyz 2940 : 0 : appendStringInfo(&cmd, "FROM pg_catalog.pg_publication_tables t\n"
2941 : : " WHERE t.pubname IN ( %s )",
2942 : : pub_names->data);
2943 : : }
2944 : :
367 michael@paquier.xyz 2945 :CBC 152 : destroyStringInfo(pub_names);
2946 : :
4 akapila@postgresql.o 2947 :GNC 152 : res = walrcv_exec(wrconn, cmd.data, column_count, tableRow);
3140 peter_e@gmx.net 2948 :CBC 152 : pfree(cmd.data);
2949 : :
2950 [ - + ]: 152 : if (res->status != WALRCV_OK_TUPLES)
3140 peter_e@gmx.net 2951 [ # # ]:UBC 0 : ereport(ERROR,
2952 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2953 : : errmsg("could not receive list of replicated tables from the publisher: %s",
2954 : : res->err)));
2955 : :
2956 : : /* Process tables. */
2538 andres@anarazel.de 2957 :CBC 152 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
3140 peter_e@gmx.net 2958 [ + + ]: 422 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
2959 : : {
2960 : : char *nspname;
2961 : : char *relname;
2962 : : bool isnull;
2963 : : char relkind;
4 akapila@postgresql.o 2964 :GNC 271 : PublicationRelKind *relinfo = palloc_object(PublicationRelKind);
2965 : :
3140 peter_e@gmx.net 2966 :CBC 271 : nspname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
2967 [ - + ]: 271 : Assert(!isnull);
2968 : 271 : relname = TextDatumGetCString(slot_getattr(slot, 2, &isnull));
2969 [ - + ]: 271 : Assert(!isnull);
4 akapila@postgresql.o 2970 :GNC 271 : relkind = DatumGetChar(slot_getattr(slot, 3, &isnull));
2971 [ - + ]: 271 : Assert(!isnull);
2972 : :
2973 : 271 : relinfo->rv = makeRangeVar(nspname, relname, -1);
2974 : 271 : relinfo->relkind = relkind;
2975 : :
2976 [ + + + - ]: 271 : if (relkind != RELKIND_SEQUENCE &&
2977 [ + + ]: 270 : check_columnlist &&
2978 : 270 : list_member_rangevar(relationlist, relinfo->rv))
1243 akapila@postgresql.o 2979 [ + - ]:CBC 1 : ereport(ERROR,
2980 : : errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2981 : : errmsg("cannot use different column lists for table \"%s.%s\" in different publications",
2982 : : nspname, relname));
2983 : : else
4 akapila@postgresql.o 2984 :GNC 270 : relationlist = lappend(relationlist, relinfo);
2985 : :
3140 peter_e@gmx.net 2986 :CBC 270 : ExecClearTuple(slot);
2987 : : }
2988 : 151 : ExecDropSingleTupleTableSlot(slot);
2989 : :
2990 : 151 : walrcv_clear_result(res);
2991 : :
4 akapila@postgresql.o 2992 :GNC 151 : return relationlist;
2993 : : }
2994 : :
2995 : : /*
2996 : : * This is to report the connection failure while dropping replication slots.
2997 : : * Here, we report the WARNING for all tablesync slots so that user can drop
2998 : : * them manually, if required.
2999 : : */
3000 : : static void
1718 akapila@postgresql.o 3001 :UBC 0 : ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err)
3002 : : {
3003 : : ListCell *lc;
3004 : :
3005 [ # # # # : 0 : foreach(lc, rstates)
# # ]
3006 : : {
3007 : 0 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
3008 : 0 : Oid relid = rstate->relid;
3009 : :
3010 : : /* Only cleanup resources of tablesync workers */
3011 [ # # ]: 0 : if (!OidIsValid(relid))
3012 : 0 : continue;
3013 : :
3014 : : /*
3015 : : * Caller needs to ensure that relstate doesn't change underneath us.
3016 : : * See DropSubscription where we get the relstates.
3017 : : */
3018 [ # # ]: 0 : if (rstate->state != SUBREL_STATE_SYNCDONE)
3019 : : {
3020 : 0 : char syncslotname[NAMEDATALEN] = {0};
3021 : :
1715 3022 : 0 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
3023 : : sizeof(syncslotname));
1718 3024 [ # # ]: 0 : elog(WARNING, "could not drop tablesync replication slot \"%s\"",
3025 : : syncslotname);
3026 : : }
3027 : : }
3028 : :
3029 [ # # ]: 0 : ereport(ERROR,
3030 : : (errcode(ERRCODE_CONNECTION_FAILURE),
3031 : : errmsg("could not connect to publisher when attempting to drop replication slot \"%s\": %s",
3032 : : slotname, err),
3033 : : /* translator: %s is an SQL ALTER command */
3034 : : errhint("Use %s to disable the subscription, and then use %s to disassociate it from the slot.",
3035 : : "ALTER SUBSCRIPTION ... DISABLE",
3036 : : "ALTER SUBSCRIPTION ... SET (slot_name = NONE)")));
3037 : : }
3038 : :
3039 : : /*
3040 : : * Check for duplicates in the given list of publications and error out if
3041 : : * found one. Add publications to datums as text datums, if datums is not
3042 : : * NULL.
3043 : : */
3044 : : static void
1665 peter@eisentraut.org 3045 :CBC 223 : check_duplicates_in_publist(List *publist, Datum *datums)
3046 : : {
3047 : : ListCell *cell;
3048 : 223 : int j = 0;
3049 : :
3050 [ + - + + : 508 : foreach(cell, publist)
+ + ]
3051 : : {
3052 : 294 : char *name = strVal(lfirst(cell));
3053 : : ListCell *pcell;
3054 : :
3055 [ + - + - : 443 : foreach(pcell, publist)
+ - ]
3056 : : {
3057 : 443 : char *pname = strVal(lfirst(pcell));
3058 : :
3059 [ + + ]: 443 : if (pcell == cell)
3060 : 285 : break;
3061 : :
3062 [ + + ]: 158 : if (strcmp(name, pname) == 0)
3063 [ + - ]: 9 : ereport(ERROR,
3064 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
3065 : : errmsg("publication name \"%s\" used more than once",
3066 : : pname)));
3067 : : }
3068 : :
3069 [ + + ]: 285 : if (datums)
3070 : 242 : datums[j++] = CStringGetTextDatum(name);
3071 : : }
3072 : 214 : }
3073 : :
3074 : : /*
3075 : : * Merge current subscription's publications and user-specified publications
3076 : : * from ADD/DROP PUBLICATIONS.
3077 : : *
3078 : : * If addpub is true, we will add the list of publications into oldpublist.
3079 : : * Otherwise, we will delete the list of publications from oldpublist. The
3080 : : * returned list is a copy, oldpublist itself is not changed.
3081 : : *
3082 : : * subname is the subscription name, for error messages.
3083 : : */
3084 : : static List *
3085 : 27 : merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname)
3086 : : {
3087 : : ListCell *lc;
3088 : :
3089 : 27 : oldpublist = list_copy(oldpublist);
3090 : :
3091 : 27 : check_duplicates_in_publist(newpublist, NULL);
3092 : :
3093 [ + - + + : 46 : foreach(lc, newpublist)
+ + ]
3094 : : {
3095 : 34 : char *name = strVal(lfirst(lc));
3096 : : ListCell *lc2;
3097 : 34 : bool found = false;
3098 : :
3099 [ + - + + : 67 : foreach(lc2, oldpublist)
+ + ]
3100 : : {
3101 : 55 : char *pubname = strVal(lfirst(lc2));
3102 : :
3103 [ + + ]: 55 : if (strcmp(name, pubname) == 0)
3104 : : {
3105 : 22 : found = true;
3106 [ + + ]: 22 : if (addpub)
3107 [ + - ]: 6 : ereport(ERROR,
3108 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
3109 : : errmsg("publication \"%s\" is already in subscription \"%s\"",
3110 : : name, subname)));
3111 : : else
3112 : 16 : oldpublist = foreach_delete_current(oldpublist, lc2);
3113 : :
3114 : 16 : break;
3115 : : }
3116 : : }
3117 : :
3118 [ + + + - ]: 28 : if (addpub && !found)
3119 : 9 : oldpublist = lappend(oldpublist, makeString(name));
3120 [ + - + + ]: 19 : else if (!addpub && !found)
3121 [ + - ]: 3 : ereport(ERROR,
3122 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
3123 : : errmsg("publication \"%s\" is not in subscription \"%s\"",
3124 : : name, subname)));
3125 : : }
3126 : :
3127 : : /*
3128 : : * XXX Probably no strong reason for this, but for now it's to make ALTER
3129 : : * SUBSCRIPTION ... DROP PUBLICATION consistent with SET PUBLICATION.
3130 : : */
3131 [ + + ]: 12 : if (!oldpublist)
3132 [ + - ]: 3 : ereport(ERROR,
3133 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
3134 : : errmsg("cannot drop all the publications from a subscription")));
3135 : :
3136 : 9 : return oldpublist;
3137 : : }
3138 : :
3139 : : /*
3140 : : * Extract the streaming mode value from a DefElem. This is like
3141 : : * defGetBoolean() but also accepts the special value of "parallel".
3142 : : */
3143 : : char
1022 akapila@postgresql.o 3144 : 420 : defGetStreamingMode(DefElem *def)
3145 : : {
3146 : : /*
3147 : : * If no parameter value given, assume "true" is meant.
3148 : : */
3149 [ - + ]: 420 : if (!def->arg)
1022 akapila@postgresql.o 3150 :UBC 0 : return LOGICALREP_STREAM_ON;
3151 : :
3152 : : /*
3153 : : * Allow 0, 1, "false", "true", "off", "on" or "parallel".
3154 : : */
1022 akapila@postgresql.o 3155 [ - + ]:CBC 420 : switch (nodeTag(def->arg))
3156 : : {
1022 akapila@postgresql.o 3157 :UBC 0 : case T_Integer:
3158 [ # # # ]: 0 : switch (intVal(def->arg))
3159 : : {
3160 : 0 : case 0:
3161 : 0 : return LOGICALREP_STREAM_OFF;
3162 : 0 : case 1:
3163 : 0 : return LOGICALREP_STREAM_ON;
3164 : 0 : default:
3165 : : /* otherwise, error out below */
3166 : 0 : break;
3167 : : }
3168 : 0 : break;
1022 akapila@postgresql.o 3169 :CBC 420 : default:
3170 : : {
3171 : 420 : char *sval = defGetString(def);
3172 : :
3173 : : /*
3174 : : * The set of strings accepted here should match up with the
3175 : : * grammar's opt_boolean_or_string production.
3176 : : */
3177 [ + + + + ]: 837 : if (pg_strcasecmp(sval, "false") == 0 ||
3178 : 417 : pg_strcasecmp(sval, "off") == 0)
3179 : 6 : return LOGICALREP_STREAM_OFF;
3180 [ + + + + ]: 819 : if (pg_strcasecmp(sval, "true") == 0 ||
3181 : 405 : pg_strcasecmp(sval, "on") == 0)
3182 : 45 : return LOGICALREP_STREAM_ON;
3183 [ + + ]: 369 : if (pg_strcasecmp(sval, "parallel") == 0)
3184 : 366 : return LOGICALREP_STREAM_PARALLEL;
3185 : : }
3186 : 3 : break;
3187 : : }
3188 : :
3189 [ + - ]: 3 : ereport(ERROR,
3190 : : (errcode(ERRCODE_SYNTAX_ERROR),
3191 : : errmsg("%s requires a Boolean value or \"parallel\"",
3192 : : def->defname)));
3193 : : return LOGICALREP_STREAM_OFF; /* keep compiler quiet */
3194 : : }
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