Age Owner Branch data TLA Line data Source code
1 : : /*-------------------------------------------------------------------------
2 : : *
3 : : * subscriptioncmds.c
4 : : * subscription catalog manipulation functions
5 : : *
6 : : * Portions Copyright (c) 1996-2024, 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/htup_details.h"
18 : : #include "access/table.h"
19 : : #include "access/xact.h"
20 : : #include "catalog/catalog.h"
21 : : #include "catalog/dependency.h"
22 : : #include "catalog/indexing.h"
23 : : #include "catalog/namespace.h"
24 : : #include "catalog/objectaccess.h"
25 : : #include "catalog/objectaddress.h"
26 : : #include "catalog/pg_authid_d.h"
27 : : #include "catalog/pg_database_d.h"
28 : : #include "catalog/pg_subscription.h"
29 : : #include "catalog/pg_subscription_rel.h"
30 : : #include "catalog/pg_type.h"
31 : : #include "commands/dbcommands.h"
32 : : #include "commands/defrem.h"
33 : : #include "commands/event_trigger.h"
34 : : #include "commands/subscriptioncmds.h"
35 : : #include "executor/executor.h"
36 : : #include "miscadmin.h"
37 : : #include "nodes/makefuncs.h"
38 : : #include "pgstat.h"
39 : : #include "replication/logicallauncher.h"
40 : : #include "replication/logicalworker.h"
41 : : #include "replication/origin.h"
42 : : #include "replication/slot.h"
43 : : #include "replication/walreceiver.h"
44 : : #include "replication/walsender.h"
45 : : #include "replication/worker_internal.h"
46 : : #include "storage/lmgr.h"
47 : : #include "utils/acl.h"
48 : : #include "utils/builtins.h"
49 : : #include "utils/guc.h"
50 : : #include "utils/lsyscache.h"
51 : : #include "utils/memutils.h"
52 : : #include "utils/pg_lsn.h"
53 : : #include "utils/syscache.h"
54 : :
55 : : /*
56 : : * Options that can be specified by the user in CREATE/ALTER SUBSCRIPTION
57 : : * command.
58 : : */
59 : : #define SUBOPT_CONNECT 0x00000001
60 : : #define SUBOPT_ENABLED 0x00000002
61 : : #define SUBOPT_CREATE_SLOT 0x00000004
62 : : #define SUBOPT_SLOT_NAME 0x00000008
63 : : #define SUBOPT_COPY_DATA 0x00000010
64 : : #define SUBOPT_SYNCHRONOUS_COMMIT 0x00000020
65 : : #define SUBOPT_REFRESH 0x00000040
66 : : #define SUBOPT_BINARY 0x00000080
67 : : #define SUBOPT_STREAMING 0x00000100
68 : : #define SUBOPT_TWOPHASE_COMMIT 0x00000200
69 : : #define SUBOPT_DISABLE_ON_ERR 0x00000400
70 : : #define SUBOPT_PASSWORD_REQUIRED 0x00000800
71 : : #define SUBOPT_RUN_AS_OWNER 0x00001000
72 : : #define SUBOPT_FAILOVER 0x00002000
73 : : #define SUBOPT_LSN 0x00004000
74 : : #define SUBOPT_ORIGIN 0x00008000
75 : :
76 : : /* check if the 'val' has 'bits' set */
77 : : #define IsSet(val, bits) (((val) & (bits)) == (bits))
78 : :
79 : : /*
80 : : * Structure to hold a bitmap representing the user-provided CREATE/ALTER
81 : : * SUBSCRIPTION command options and the parsed/default values of each of them.
82 : : */
83 : : typedef struct SubOpts
84 : : {
85 : : bits32 specified_opts;
86 : : char *slot_name;
87 : : char *synchronous_commit;
88 : : bool connect;
89 : : bool enabled;
90 : : bool create_slot;
91 : : bool copy_data;
92 : : bool refresh;
93 : : bool binary;
94 : : char streaming;
95 : : bool twophase;
96 : : bool disableonerr;
97 : : bool passwordrequired;
98 : : bool runasowner;
99 : : bool failover;
100 : : char *origin;
101 : : XLogRecPtr lsn;
102 : : } SubOpts;
103 : :
104 : : static List *fetch_table_list(WalReceiverConn *wrconn, List *publications);
105 : : static void check_publications_origin(WalReceiverConn *wrconn,
106 : : List *publications, bool copydata,
107 : : char *origin, Oid *subrel_local_oids,
108 : : int subrel_count, char *subname);
109 : : static void check_duplicates_in_publist(List *publist, Datum *datums);
110 : : static List *merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname);
111 : : static void ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err);
112 : :
113 : :
114 : : /*
115 : : * Common option parsing function for CREATE and ALTER SUBSCRIPTION commands.
116 : : *
117 : : * Since not all options can be specified in both commands, this function
118 : : * will report an error if mutually exclusive options are specified.
119 : : */
120 : : static void
1004 dean.a.rasheed@gmail 121 :CBC 413 : parse_subscription_options(ParseState *pstate, List *stmt_options,
122 : : bits32 supported_opts, SubOpts *opts)
123 : : {
124 : : ListCell *lc;
125 : :
126 : : /* Start out with cleared opts. */
858 michael@paquier.xyz 127 : 413 : memset(opts, 0, sizeof(SubOpts));
128 : :
129 : : /* caller must expect some option */
1013 akapila@postgresql.o 130 [ - + ]: 413 : Assert(supported_opts != 0);
131 : :
132 : : /* If connect option is supported, these others also need to be. */
133 [ + + - + ]: 413 : Assert(!IsSet(supported_opts, SUBOPT_CONNECT) ||
134 : : IsSet(supported_opts, SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
135 : : SUBOPT_COPY_DATA));
136 : :
137 : : /* Set default values for the supported options. */
138 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_CONNECT))
139 : 211 : opts->connect = true;
140 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_ENABLED))
141 : 246 : opts->enabled = true;
142 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_CREATE_SLOT))
143 : 211 : opts->create_slot = true;
144 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_COPY_DATA))
145 : 276 : opts->copy_data = true;
146 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_REFRESH))
147 : 41 : opts->refresh = true;
148 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_BINARY))
149 : 301 : opts->binary = false;
150 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_STREAMING))
461 151 : 301 : opts->streaming = LOGICALREP_STREAM_OFF;
1005 152 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT))
153 : 211 : opts->twophase = false;
762 154 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR))
155 : 301 : opts->disableonerr = false;
381 rhaas@postgresql.org 156 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED))
157 : 301 : opts->passwordrequired = true;
376 158 [ + + ]: 413 : if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER))
159 : 301 : opts->runasowner = false;
75 akapila@postgresql.o 160 [ + + ]:GNC 413 : if (IsSet(supported_opts, SUBOPT_FAILOVER))
161 : 301 : opts->failover = false;
633 akapila@postgresql.o 162 [ + + ]:CBC 413 : if (IsSet(supported_opts, SUBOPT_ORIGIN))
163 : 301 : opts->origin = pstrdup(LOGICALREP_ORIGIN_ANY);
164 : :
165 : : /* Parse options */
1013 166 [ + + + + : 809 : foreach(lc, stmt_options)
+ + ]
167 : : {
2642 peter_e@gmx.net 168 : 426 : DefElem *defel = (DefElem *) lfirst(lc);
169 : :
1013 akapila@postgresql.o 170 [ + + ]: 426 : if (IsSet(supported_opts, SUBOPT_CONNECT) &&
171 [ + + ]: 252 : strcmp(defel->defname, "connect") == 0)
172 : : {
173 [ - + ]: 84 : if (IsSet(opts->specified_opts, SUBOPT_CONNECT))
1004 dean.a.rasheed@gmail 174 :UBC 0 : errorConflictingDefElem(defel, pstate);
175 : :
1013 akapila@postgresql.o 176 :CBC 84 : opts->specified_opts |= SUBOPT_CONNECT;
177 : 84 : opts->connect = defGetBoolean(defel);
178 : : }
179 [ + + ]: 342 : else if (IsSet(supported_opts, SUBOPT_ENABLED) &&
180 [ + + ]: 203 : strcmp(defel->defname, "enabled") == 0)
181 : : {
182 [ - + ]: 53 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
1004 dean.a.rasheed@gmail 183 :UBC 0 : errorConflictingDefElem(defel, pstate);
184 : :
1013 akapila@postgresql.o 185 :CBC 53 : opts->specified_opts |= SUBOPT_ENABLED;
186 : 53 : opts->enabled = defGetBoolean(defel);
187 : : }
188 [ + + ]: 289 : else if (IsSet(supported_opts, SUBOPT_CREATE_SLOT) &&
189 [ + + ]: 150 : strcmp(defel->defname, "create_slot") == 0)
190 : : {
191 [ - + ]: 21 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
1004 dean.a.rasheed@gmail 192 :UBC 0 : errorConflictingDefElem(defel, pstate);
193 : :
1013 akapila@postgresql.o 194 :CBC 21 : opts->specified_opts |= SUBOPT_CREATE_SLOT;
195 : 21 : opts->create_slot = defGetBoolean(defel);
196 : : }
197 [ + + ]: 268 : else if (IsSet(supported_opts, SUBOPT_SLOT_NAME) &&
198 [ + + ]: 220 : strcmp(defel->defname, "slot_name") == 0)
199 : : {
200 [ - + ]: 71 : if (IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
1004 dean.a.rasheed@gmail 201 :UBC 0 : errorConflictingDefElem(defel, pstate);
202 : :
1013 akapila@postgresql.o 203 :CBC 71 : opts->specified_opts |= SUBOPT_SLOT_NAME;
204 : 71 : opts->slot_name = defGetString(defel);
205 : :
206 : : /* Setting slot_name = NONE is treated as no slot name. */
207 [ + + ]: 139 : if (strcmp(opts->slot_name, "none") == 0)
208 : 54 : opts->slot_name = NULL;
209 : : else
1000 210 : 17 : ReplicationSlotValidateName(opts->slot_name, ERROR);
211 : : }
1013 212 [ + + ]: 197 : else if (IsSet(supported_opts, SUBOPT_COPY_DATA) &&
213 [ + + ]: 126 : strcmp(defel->defname, "copy_data") == 0)
214 : : {
215 [ - + ]: 20 : if (IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
1004 dean.a.rasheed@gmail 216 :UBC 0 : errorConflictingDefElem(defel, pstate);
217 : :
1013 akapila@postgresql.o 218 :CBC 20 : opts->specified_opts |= SUBOPT_COPY_DATA;
219 : 20 : opts->copy_data = defGetBoolean(defel);
220 : : }
221 [ + + ]: 177 : else if (IsSet(supported_opts, SUBOPT_SYNCHRONOUS_COMMIT) &&
222 [ + + ]: 132 : strcmp(defel->defname, "synchronous_commit") == 0)
223 : : {
224 [ - + ]: 6 : if (IsSet(opts->specified_opts, SUBOPT_SYNCHRONOUS_COMMIT))
1004 dean.a.rasheed@gmail 225 :UBC 0 : errorConflictingDefElem(defel, pstate);
226 : :
1013 akapila@postgresql.o 227 :CBC 6 : opts->specified_opts |= SUBOPT_SYNCHRONOUS_COMMIT;
228 : 6 : opts->synchronous_commit = defGetString(defel);
229 : :
230 : : /* Test if the given value is valid for synchronous_commit GUC. */
231 : 6 : (void) set_config_option("synchronous_commit", opts->synchronous_commit,
232 : : PGC_BACKEND, PGC_S_TEST, GUC_ACTION_SET,
233 : : false, 0, false);
234 : : }
235 [ + + ]: 171 : else if (IsSet(supported_opts, SUBOPT_REFRESH) &&
236 [ + - ]: 33 : strcmp(defel->defname, "refresh") == 0)
237 : : {
238 [ - + ]: 33 : if (IsSet(opts->specified_opts, SUBOPT_REFRESH))
1004 dean.a.rasheed@gmail 239 :UBC 0 : errorConflictingDefElem(defel, pstate);
240 : :
1013 akapila@postgresql.o 241 :CBC 33 : opts->specified_opts |= SUBOPT_REFRESH;
242 : 33 : opts->refresh = defGetBoolean(defel);
243 : : }
244 [ + + ]: 138 : else if (IsSet(supported_opts, SUBOPT_BINARY) &&
245 [ + + ]: 126 : strcmp(defel->defname, "binary") == 0)
246 : : {
247 [ - + ]: 16 : if (IsSet(opts->specified_opts, SUBOPT_BINARY))
1004 dean.a.rasheed@gmail 248 :UBC 0 : errorConflictingDefElem(defel, pstate);
249 : :
1013 akapila@postgresql.o 250 :CBC 16 : opts->specified_opts |= SUBOPT_BINARY;
251 : 16 : opts->binary = defGetBoolean(defel);
252 : : }
253 [ + + ]: 122 : else if (IsSet(supported_opts, SUBOPT_STREAMING) &&
254 [ + + ]: 110 : strcmp(defel->defname, "streaming") == 0)
255 : : {
256 [ - + ]: 31 : if (IsSet(opts->specified_opts, SUBOPT_STREAMING))
1004 dean.a.rasheed@gmail 257 :UBC 0 : errorConflictingDefElem(defel, pstate);
258 : :
1013 akapila@postgresql.o 259 :CBC 31 : opts->specified_opts |= SUBOPT_STREAMING;
461 260 : 31 : opts->streaming = defGetStreamingMode(defel);
261 : : }
1005 262 [ + + ]: 91 : else if (strcmp(defel->defname, "two_phase") == 0)
263 : : {
264 : : /*
265 : : * Do not allow toggling of two_phase option. Doing so could cause
266 : : * missing of transactions and lead to an inconsistent replica.
267 : : * See comments atop worker.c
268 : : *
269 : : * Note: Unsupported twophase indicates that this call originated
270 : : * from AlterSubscription.
271 : : */
272 [ + + ]: 19 : if (!IsSet(supported_opts, SUBOPT_TWOPHASE_COMMIT))
273 [ + - ]: 3 : ereport(ERROR,
274 : : (errcode(ERRCODE_SYNTAX_ERROR),
275 : : errmsg("unrecognized subscription parameter: \"%s\"", defel->defname)));
276 : :
277 [ - + ]: 16 : if (IsSet(opts->specified_opts, SUBOPT_TWOPHASE_COMMIT))
1004 dean.a.rasheed@gmail 278 :UBC 0 : errorConflictingDefElem(defel, pstate);
279 : :
1005 akapila@postgresql.o 280 :CBC 16 : opts->specified_opts |= SUBOPT_TWOPHASE_COMMIT;
281 : 16 : opts->twophase = defGetBoolean(defel);
282 : : }
762 283 [ + + ]: 72 : else if (IsSet(supported_opts, SUBOPT_DISABLE_ON_ERR) &&
284 [ + + ]: 60 : strcmp(defel->defname, "disable_on_error") == 0)
285 : : {
286 [ - + ]: 10 : if (IsSet(opts->specified_opts, SUBOPT_DISABLE_ON_ERR))
762 akapila@postgresql.o 287 :UBC 0 : errorConflictingDefElem(defel, pstate);
288 : :
762 akapila@postgresql.o 289 :CBC 10 : opts->specified_opts |= SUBOPT_DISABLE_ON_ERR;
290 : 10 : opts->disableonerr = defGetBoolean(defel);
291 : : }
381 rhaas@postgresql.org 292 [ + + ]: 62 : else if (IsSet(supported_opts, SUBOPT_PASSWORD_REQUIRED) &&
293 [ + + ]: 50 : strcmp(defel->defname, "password_required") == 0)
294 : : {
295 [ - + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_PASSWORD_REQUIRED))
381 rhaas@postgresql.org 296 :UBC 0 : errorConflictingDefElem(defel, pstate);
297 : :
381 rhaas@postgresql.org 298 :CBC 12 : opts->specified_opts |= SUBOPT_PASSWORD_REQUIRED;
299 : 12 : opts->passwordrequired = defGetBoolean(defel);
300 : : }
376 301 [ + + ]: 50 : else if (IsSet(supported_opts, SUBOPT_RUN_AS_OWNER) &&
302 [ + + ]: 38 : strcmp(defel->defname, "run_as_owner") == 0)
303 : : {
304 [ - + ]: 9 : if (IsSet(opts->specified_opts, SUBOPT_RUN_AS_OWNER))
376 rhaas@postgresql.org 305 :UBC 0 : errorConflictingDefElem(defel, pstate);
306 : :
376 rhaas@postgresql.org 307 :CBC 9 : opts->specified_opts |= SUBOPT_RUN_AS_OWNER;
308 : 9 : opts->runasowner = defGetBoolean(defel);
309 : : }
75 akapila@postgresql.o 310 [ + + ]:GNC 41 : else if (IsSet(supported_opts, SUBOPT_FAILOVER) &&
311 [ + + ]: 29 : strcmp(defel->defname, "failover") == 0)
312 : : {
313 [ - + ]: 11 : if (IsSet(opts->specified_opts, SUBOPT_FAILOVER))
75 akapila@postgresql.o 314 :UNC 0 : errorConflictingDefElem(defel, pstate);
315 : :
75 akapila@postgresql.o 316 :GNC 11 : opts->specified_opts |= SUBOPT_FAILOVER;
317 : 11 : opts->failover = defGetBoolean(defel);
318 : : }
633 akapila@postgresql.o 319 [ + + ]:CBC 30 : else if (IsSet(supported_opts, SUBOPT_ORIGIN) &&
320 [ + + ]: 18 : strcmp(defel->defname, "origin") == 0)
321 : : {
322 [ - + ]: 15 : if (IsSet(opts->specified_opts, SUBOPT_ORIGIN))
633 akapila@postgresql.o 323 :UBC 0 : errorConflictingDefElem(defel, pstate);
324 : :
633 akapila@postgresql.o 325 :CBC 15 : opts->specified_opts |= SUBOPT_ORIGIN;
326 : 15 : pfree(opts->origin);
327 : :
328 : : /*
329 : : * Even though the "origin" parameter allows only "none" and "any"
330 : : * values, it is implemented as a string type so that the
331 : : * parameter can be extended in future versions to support
332 : : * filtering using origin names specified by the user.
333 : : */
334 : 15 : opts->origin = defGetString(defel);
335 : :
336 [ + + + + ]: 22 : if ((pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_NONE) != 0) &&
337 : 7 : (pg_strcasecmp(opts->origin, LOGICALREP_ORIGIN_ANY) != 0))
338 [ + - ]: 3 : ereport(ERROR,
339 : : errcode(ERRCODE_INVALID_PARAMETER_VALUE),
340 : : errmsg("unrecognized origin value: \"%s\"", opts->origin));
341 : : }
754 342 [ + + ]: 15 : else if (IsSet(supported_opts, SUBOPT_LSN) &&
343 [ + - ]: 12 : strcmp(defel->defname, "lsn") == 0)
344 : 9 : {
345 : 12 : char *lsn_str = defGetString(defel);
346 : : XLogRecPtr lsn;
347 : :
348 [ - + ]: 12 : if (IsSet(opts->specified_opts, SUBOPT_LSN))
754 akapila@postgresql.o 349 :UBC 0 : errorConflictingDefElem(defel, pstate);
350 : :
351 : : /* Setting lsn = NONE is treated as resetting LSN */
754 akapila@postgresql.o 352 [ + + ]:CBC 12 : if (strcmp(lsn_str, "none") == 0)
353 : 3 : lsn = InvalidXLogRecPtr;
354 : : else
355 : : {
356 : : /* Parse the argument as LSN */
357 : 9 : lsn = DatumGetLSN(DirectFunctionCall1(pg_lsn_in,
358 : : CStringGetDatum(lsn_str)));
359 : :
360 [ + + ]: 9 : if (XLogRecPtrIsInvalid(lsn))
361 [ + - ]: 3 : ereport(ERROR,
362 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
363 : : errmsg("invalid WAL location (LSN): %s", lsn_str)));
364 : : }
365 : :
366 : 9 : opts->specified_opts |= SUBOPT_LSN;
367 : 9 : opts->lsn = lsn;
368 : : }
369 : : else
2524 peter_e@gmx.net 370 [ + - ]: 3 : ereport(ERROR,
371 : : (errcode(ERRCODE_SYNTAX_ERROR),
372 : : errmsg("unrecognized subscription parameter: \"%s\"", defel->defname)));
373 : : }
374 : :
375 : : /*
376 : : * We've been explicitly asked to not connect, that requires some
377 : : * additional processing.
378 : : */
1013 akapila@postgresql.o 379 [ + + + + ]: 383 : if (!opts->connect && IsSet(supported_opts, SUBOPT_CONNECT))
380 : : {
381 : : /* Check for incompatible options from the user. */
382 [ + - ]: 69 : if (opts->enabled &&
383 [ + + ]: 69 : IsSet(opts->specified_opts, SUBOPT_ENABLED))
2579 peter_e@gmx.net 384 [ + - ]: 3 : ereport(ERROR,
385 : : (errcode(ERRCODE_SYNTAX_ERROR),
386 : : /*- translator: both %s are strings of the form "option = value" */
387 : : errmsg("%s and %s are mutually exclusive options",
388 : : "connect = false", "enabled = true")));
389 : :
1013 akapila@postgresql.o 390 [ + + ]: 66 : if (opts->create_slot &&
391 [ + + ]: 63 : IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
2579 peter_e@gmx.net 392 [ + - ]: 3 : ereport(ERROR,
393 : : (errcode(ERRCODE_SYNTAX_ERROR),
394 : : errmsg("%s and %s are mutually exclusive options",
395 : : "connect = false", "create_slot = true")));
396 : :
1013 akapila@postgresql.o 397 [ + + ]: 63 : if (opts->copy_data &&
398 [ + + ]: 60 : IsSet(opts->specified_opts, SUBOPT_COPY_DATA))
2579 peter_e@gmx.net 399 [ + - ]: 3 : ereport(ERROR,
400 : : (errcode(ERRCODE_SYNTAX_ERROR),
401 : : errmsg("%s and %s are mutually exclusive options",
402 : : "connect = false", "copy_data = true")));
403 : :
75 akapila@postgresql.o 404 [ + + ]:GNC 60 : if (opts->failover &&
405 [ + - ]: 3 : IsSet(opts->specified_opts, SUBOPT_FAILOVER))
406 [ + - ]: 3 : ereport(ERROR,
407 : : (errcode(ERRCODE_SYNTAX_ERROR),
408 : : errmsg("%s and %s are mutually exclusive options",
409 : : "connect = false", "failover = true")));
410 : :
411 : : /* Change the defaults of other options. */
1013 akapila@postgresql.o 412 :CBC 57 : opts->enabled = false;
413 : 57 : opts->create_slot = false;
414 : 57 : opts->copy_data = false;
415 : : }
416 : :
417 : : /*
418 : : * Do additional checking for disallowed combination when slot_name = NONE
419 : : * was used.
420 : : */
421 [ + + ]: 371 : if (!opts->slot_name &&
422 [ + + ]: 357 : IsSet(opts->specified_opts, SUBOPT_SLOT_NAME))
423 : : {
858 michael@paquier.xyz 424 [ + + ]: 51 : if (opts->enabled)
425 : : {
426 [ + + ]: 9 : if (IsSet(opts->specified_opts, SUBOPT_ENABLED))
427 [ + - ]: 3 : ereport(ERROR,
428 : : (errcode(ERRCODE_SYNTAX_ERROR),
429 : : /*- translator: both %s are strings of the form "option = value" */
430 : : errmsg("%s and %s are mutually exclusive options",
431 : : "slot_name = NONE", "enabled = true")));
432 : : else
433 [ + - ]: 6 : ereport(ERROR,
434 : : (errcode(ERRCODE_SYNTAX_ERROR),
435 : : /*- translator: both %s are strings of the form "option = value" */
436 : : errmsg("subscription with %s must also set %s",
437 : : "slot_name = NONE", "enabled = false")));
438 : : }
439 : :
440 [ + + ]: 42 : if (opts->create_slot)
441 : : {
442 [ + + ]: 6 : if (IsSet(opts->specified_opts, SUBOPT_CREATE_SLOT))
443 [ + - ]: 3 : ereport(ERROR,
444 : : (errcode(ERRCODE_SYNTAX_ERROR),
445 : : /*- translator: both %s are strings of the form "option = value" */
446 : : errmsg("%s and %s are mutually exclusive options",
447 : : "slot_name = NONE", "create_slot = true")));
448 : : else
449 [ + - ]: 3 : ereport(ERROR,
450 : : (errcode(ERRCODE_SYNTAX_ERROR),
451 : : /*- translator: both %s are strings of the form "option = value" */
452 : : errmsg("subscription with %s must also set %s",
453 : : "slot_name = NONE", "create_slot = false")));
454 : : }
455 : : }
2642 peter_e@gmx.net 456 : 356 : }
457 : :
458 : : /*
459 : : * Add publication names from the list to a string.
460 : : */
461 : : static void
745 akapila@postgresql.o 462 : 246 : get_publications_str(List *publications, StringInfo dest, bool quote_literal)
463 : : {
464 : : ListCell *lc;
465 : 246 : bool first = true;
466 : :
606 tgl@sss.pgh.pa.us 467 [ - + ]: 246 : Assert(publications != NIL);
468 : :
745 akapila@postgresql.o 469 [ + - + + : 570 : foreach(lc, publications)
+ + ]
470 : : {
471 : 324 : char *pubname = strVal(lfirst(lc));
472 : :
473 [ + + ]: 324 : if (first)
474 : 246 : first = false;
475 : : else
476 : 78 : appendStringInfoString(dest, ", ");
477 : :
478 [ + + ]: 324 : if (quote_literal)
479 : 318 : appendStringInfoString(dest, quote_literal_cstr(pubname));
480 : : else
481 : : {
482 : 6 : appendStringInfoChar(dest, '"');
483 : 6 : appendStringInfoString(dest, pubname);
484 : 6 : appendStringInfoChar(dest, '"');
485 : : }
486 : : }
487 : 246 : }
488 : :
489 : : /*
490 : : * Check that the specified publications are present on the publisher.
491 : : */
492 : : static void
493 : 107 : check_publications(WalReceiverConn *wrconn, List *publications)
494 : : {
495 : : WalRcvExecResult *res;
496 : : StringInfo cmd;
497 : : TupleTableSlot *slot;
498 : 107 : List *publicationsCopy = NIL;
499 : 107 : Oid tableRow[1] = {TEXTOID};
500 : :
501 : 107 : cmd = makeStringInfo();
502 : 107 : appendStringInfoString(cmd, "SELECT t.pubname FROM\n"
503 : : " pg_catalog.pg_publication t WHERE\n"
504 : : " t.pubname IN (");
505 : 107 : get_publications_str(publications, cmd, true);
506 : 107 : appendStringInfoChar(cmd, ')');
507 : :
508 : 107 : res = walrcv_exec(wrconn, cmd->data, 1, tableRow);
29 dgustafsson@postgres 509 :GNC 107 : destroyStringInfo(cmd);
510 : :
745 akapila@postgresql.o 511 [ - + ]:CBC 107 : if (res->status != WALRCV_OK_TUPLES)
745 akapila@postgresql.o 512 [ # # ]:UBC 0 : ereport(ERROR,
513 : : errmsg("could not receive list of publications from the publisher: %s",
514 : : res->err));
515 : :
745 akapila@postgresql.o 516 :CBC 107 : publicationsCopy = list_copy(publications);
517 : :
518 : : /* Process publication(s). */
519 : 107 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
520 [ + + ]: 240 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
521 : : {
522 : : char *pubname;
523 : : bool isnull;
524 : :
525 : 133 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
526 [ - + ]: 133 : Assert(!isnull);
527 : :
528 : : /* Delete the publication present in publisher from the list. */
529 : 133 : publicationsCopy = list_delete(publicationsCopy, makeString(pubname));
530 : 133 : ExecClearTuple(slot);
531 : : }
532 : :
533 : 107 : ExecDropSingleTupleTableSlot(slot);
534 : :
535 : 107 : walrcv_clear_result(res);
536 : :
537 [ + + ]: 107 : if (list_length(publicationsCopy))
538 : : {
539 : : /* Prepare the list of non-existent publication(s) for error message. */
540 : 3 : StringInfo pubnames = makeStringInfo();
541 : :
542 : 3 : get_publications_str(publicationsCopy, pubnames, false);
543 [ + - ]: 3 : ereport(WARNING,
544 : : errcode(ERRCODE_UNDEFINED_OBJECT),
545 : : errmsg_plural("publication %s does not exist on the publisher",
546 : : "publications %s do not exist on the publisher",
547 : : list_length(publicationsCopy),
548 : : pubnames->data));
549 : : }
550 : 107 : }
551 : :
552 : : /*
553 : : * Auxiliary function to build a text array out of a list of String nodes.
554 : : */
555 : : static Datum
2642 peter_e@gmx.net 556 : 168 : publicationListToArray(List *publist)
557 : : {
558 : : ArrayType *arr;
559 : : Datum *datums;
560 : : MemoryContext memcxt;
561 : : MemoryContext oldcxt;
562 : :
563 : : /* Create memory context for temporary allocations. */
564 : 168 : memcxt = AllocSetContextCreate(CurrentMemoryContext,
565 : : "publicationListToArray to array",
566 : : ALLOCSET_DEFAULT_SIZES);
567 : 168 : oldcxt = MemoryContextSwitchTo(memcxt);
568 : :
2395 tgl@sss.pgh.pa.us 569 : 168 : datums = (Datum *) palloc(sizeof(Datum) * list_length(publist));
570 : :
1104 peter@eisentraut.org 571 : 168 : check_duplicates_in_publist(publist, datums);
572 : :
2642 peter_e@gmx.net 573 : 165 : MemoryContextSwitchTo(oldcxt);
574 : :
653 peter@eisentraut.org 575 : 165 : arr = construct_array_builtin(datums, list_length(publist), TEXTOID);
576 : :
2642 peter_e@gmx.net 577 : 165 : MemoryContextDelete(memcxt);
578 : :
579 : 165 : return PointerGetDatum(arr);
580 : : }
581 : :
582 : : /*
583 : : * Create new subscription.
584 : : */
585 : : ObjectAddress
1004 dean.a.rasheed@gmail 586 : 211 : CreateSubscription(ParseState *pstate, CreateSubscriptionStmt *stmt,
587 : : bool isTopLevel)
588 : : {
589 : : Relation rel;
590 : : ObjectAddress myself;
591 : : Oid subid;
592 : : bool nulls[Natts_pg_subscription];
593 : : Datum values[Natts_pg_subscription];
2641 alvherre@alvh.no-ip. 594 : 211 : Oid owner = GetUserId();
595 : : HeapTuple tup;
596 : : char *conninfo;
597 : : char originname[NAMEDATALEN];
598 : : List *publications;
599 : : bits32 supported_opts;
1013 akapila@postgresql.o 600 : 211 : SubOpts opts = {0};
601 : : AclResult aclresult;
602 : :
603 : : /*
604 : : * Parse and check options.
605 : : *
606 : : * Connection and publication should not be specified here.
607 : : */
608 : 211 : supported_opts = (SUBOPT_CONNECT | SUBOPT_ENABLED | SUBOPT_CREATE_SLOT |
609 : : SUBOPT_SLOT_NAME | SUBOPT_COPY_DATA |
610 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
611 : : SUBOPT_STREAMING | SUBOPT_TWOPHASE_COMMIT |
612 : : SUBOPT_DISABLE_ON_ERR | SUBOPT_PASSWORD_REQUIRED |
613 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER | SUBOPT_ORIGIN);
1004 dean.a.rasheed@gmail 614 : 211 : 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 : : */
1013 akapila@postgresql.o 622 [ + + ]: 169 : if (opts.create_slot)
2249 peter_e@gmx.net 623 : 106 : 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 : : */
381 rhaas@postgresql.org 630 [ + + ]: 166 : if (!has_privs_of_role(owner, ROLE_PG_CREATE_SUBSCRIPTION))
2642 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 : : */
381 rhaas@postgresql.org 641 : 163 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
642 : : owner, ACL_CREATE);
643 [ + + ]: 163 : 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 [ + + + + ]: 160 : if (!opts.passwordrequired && !superuser_arg(owner))
331 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 : :
1910 andres@anarazel.de 667 : 157 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
668 : :
669 : : /* Check if name is used */
1972 670 : 157 : subid = GetSysCacheOid2(SUBSCRIPTIONNAME, Anum_pg_subscription_oid,
671 : : MyDatabaseId, CStringGetDatum(stmt->subname));
2642 peter_e@gmx.net 672 [ + + ]: 157 : if (OidIsValid(subid))
673 : : {
674 [ + - ]: 3 : ereport(ERROR,
675 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
676 : : errmsg("subscription \"%s\" already exists",
677 : : stmt->subname)));
678 : : }
679 : :
1013 akapila@postgresql.o 680 [ + + ]: 154 : if (!IsSet(opts.specified_opts, SUBOPT_SLOT_NAME) &&
681 [ + - ]: 133 : opts.slot_name == NULL)
682 : 133 : opts.slot_name = stmt->subname;
683 : :
684 : : /* The default for synchronous_commit of subscriptions is off. */
685 [ + - ]: 154 : if (opts.synchronous_commit == NULL)
686 : 154 : opts.synchronous_commit = "off";
687 : :
2642 peter_e@gmx.net 688 : 154 : conninfo = stmt->conninfo;
689 : 154 : publications = stmt->publication;
690 : :
691 : : /* Load the library providing us libpq calls. */
692 : 154 : load_file("libpqwalreceiver", false);
693 : :
694 : : /* Check the connection info string. */
381 rhaas@postgresql.org 695 [ + + + + ]: 154 : walrcv_check_conninfo(conninfo, opts.passwordrequired && !superuser());
696 : :
697 : : /* Everything ok, form a new tuple. */
2642 peter_e@gmx.net 698 : 145 : memset(values, 0, sizeof(values));
699 : 145 : memset(nulls, false, sizeof(nulls));
700 : :
1972 andres@anarazel.de 701 : 145 : subid = GetNewOidWithIndex(rel, SubscriptionObjectIndexId,
702 : : Anum_pg_subscription_oid);
703 : 145 : values[Anum_pg_subscription_oid - 1] = ObjectIdGetDatum(subid);
2642 peter_e@gmx.net 704 : 145 : values[Anum_pg_subscription_subdbid - 1] = ObjectIdGetDatum(MyDatabaseId);
738 akapila@postgresql.o 705 : 145 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(InvalidXLogRecPtr);
2642 peter_e@gmx.net 706 : 145 : values[Anum_pg_subscription_subname - 1] =
707 : 145 : DirectFunctionCall1(namein, CStringGetDatum(stmt->subname));
2641 alvherre@alvh.no-ip. 708 : 145 : values[Anum_pg_subscription_subowner - 1] = ObjectIdGetDatum(owner);
1013 akapila@postgresql.o 709 : 145 : values[Anum_pg_subscription_subenabled - 1] = BoolGetDatum(opts.enabled);
710 : 145 : values[Anum_pg_subscription_subbinary - 1] = BoolGetDatum(opts.binary);
461 711 : 145 : values[Anum_pg_subscription_substream - 1] = CharGetDatum(opts.streaming);
1005 712 : 145 : values[Anum_pg_subscription_subtwophasestate - 1] =
713 [ + + ]: 145 : CharGetDatum(opts.twophase ?
714 : : LOGICALREP_TWOPHASE_STATE_PENDING :
715 : : LOGICALREP_TWOPHASE_STATE_DISABLED);
762 716 : 145 : values[Anum_pg_subscription_subdisableonerr - 1] = BoolGetDatum(opts.disableonerr);
381 rhaas@postgresql.org 717 : 145 : values[Anum_pg_subscription_subpasswordrequired - 1] = BoolGetDatum(opts.passwordrequired);
376 718 : 145 : values[Anum_pg_subscription_subrunasowner - 1] = BoolGetDatum(opts.runasowner);
75 akapila@postgresql.o 719 :GNC 145 : values[Anum_pg_subscription_subfailover - 1] = BoolGetDatum(opts.failover);
2642 peter_e@gmx.net 720 :CBC 145 : values[Anum_pg_subscription_subconninfo - 1] =
721 : 145 : CStringGetTextDatum(conninfo);
1013 akapila@postgresql.o 722 [ + + ]: 145 : if (opts.slot_name)
2532 peter_e@gmx.net 723 : 135 : values[Anum_pg_subscription_subslotname - 1] =
1013 akapila@postgresql.o 724 : 135 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
725 : : else
2532 peter_e@gmx.net 726 : 10 : nulls[Anum_pg_subscription_subslotname - 1] = true;
2557 727 : 145 : values[Anum_pg_subscription_subsynccommit - 1] =
1013 akapila@postgresql.o 728 : 145 : CStringGetTextDatum(opts.synchronous_commit);
2642 peter_e@gmx.net 729 : 142 : values[Anum_pg_subscription_subpublications - 1] =
2524 bruce@momjian.us 730 : 145 : publicationListToArray(publications);
633 akapila@postgresql.o 731 : 142 : values[Anum_pg_subscription_suborigin - 1] =
732 : 142 : CStringGetTextDatum(opts.origin);
733 : :
2642 peter_e@gmx.net 734 : 142 : tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
735 : :
736 : : /* Insert tuple into catalog. */
1972 andres@anarazel.de 737 : 142 : CatalogTupleInsert(rel, tup);
2642 peter_e@gmx.net 738 : 142 : heap_freetuple(tup);
739 : :
2641 alvherre@alvh.no-ip. 740 : 142 : recordDependencyOnOwner(SubscriptionRelationId, subid, owner);
741 : :
551 akapila@postgresql.o 742 : 142 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
2642 peter_e@gmx.net 743 : 142 : replorigin_create(originname);
744 : :
745 : : /*
746 : : * Connect to remote side to execute requested commands and fetch table
747 : : * info.
748 : : */
1013 akapila@postgresql.o 749 [ + + ]: 142 : if (opts.connect)
750 : : {
751 : : char *err;
752 : : WalReceiverConn *wrconn;
753 : : List *tables;
754 : : ListCell *lc;
755 : : char table_state;
756 : : bool must_use_password;
757 : :
758 : : /* Try to connect to the publisher. */
381 rhaas@postgresql.org 759 [ - + - - ]: 103 : must_use_password = !superuser_arg(owner) && opts.passwordrequired;
69 akapila@postgresql.o 760 :GNC 103 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
761 : : stmt->subname, &err);
2642 peter_e@gmx.net 762 [ + + ]:CBC 103 : if (!wrconn)
763 [ + - ]: 3 : ereport(ERROR,
764 : : (errcode(ERRCODE_CONNECTION_FAILURE),
765 : : errmsg("could not connect to the publisher: %s", err)));
766 : :
2636 767 [ + + ]: 100 : PG_TRY();
768 : : {
745 akapila@postgresql.o 769 : 100 : check_publications(wrconn, publications);
584 770 : 100 : check_publications_origin(wrconn, publications, opts.copy_data,
771 : : opts.origin, NULL, 0, stmt->subname);
772 : :
773 : : /*
774 : : * Set sync state based on if we were asked to do data copy or
775 : : * not.
776 : : */
738 tomas.vondra@postgre 777 [ + + ]: 100 : table_state = opts.copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY;
778 : :
779 : : /*
780 : : * Get the table list from publisher and build local table status
781 : : * info.
782 : : */
783 : 100 : tables = fetch_table_list(wrconn, publications);
784 [ + + + + : 253 : foreach(lc, tables)
+ + ]
785 : : {
2579 peter_e@gmx.net 786 : 154 : RangeVar *rv = (RangeVar *) lfirst(lc);
787 : : Oid relid;
788 : :
2578 789 : 154 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
790 : :
791 : : /* Check for supported relkind. */
2525 792 : 154 : CheckSubscriptionRelkind(get_rel_relkind(relid),
793 : 154 : rv->schemaname, rv->relname);
794 : :
738 tomas.vondra@postgre 795 : 154 : AddSubscriptionRelState(subid, relid, table_state,
796 : : InvalidXLogRecPtr, true);
797 : : }
798 : :
799 : : /*
800 : : * If requested, create permanent slot for the subscription. We
801 : : * won't use the initial snapshot for anything, so no need to
802 : : * export it.
803 : : */
1013 akapila@postgresql.o 804 [ + + ]: 99 : if (opts.create_slot)
805 : : {
1005 806 : 93 : bool twophase_enabled = false;
807 : :
1013 808 [ - + ]: 93 : Assert(opts.slot_name);
809 : :
810 : : /*
811 : : * Even if two_phase is set, don't create the slot with
812 : : * two-phase enabled. Will enable it once all the tables are
813 : : * synced and ready. This avoids race-conditions like prepared
814 : : * transactions being skipped due to changes not being applied
815 : : * due to checks in should_apply_changes_for_rel() when
816 : : * tablesync for the corresponding tables are in progress. See
817 : : * comments atop worker.c.
818 : : *
819 : : * Note that if tables were specified but copy_data is false
820 : : * then it is safe to enable two_phase up-front because those
821 : : * tables are already initially in READY state. When the
822 : : * subscription has no tables, we leave the twophase state as
823 : : * PENDING, to allow ALTER SUBSCRIPTION ... REFRESH
824 : : * PUBLICATION to work.
825 : : */
738 tomas.vondra@postgre 826 [ + + + + : 93 : if (opts.twophase && !opts.copy_data && tables != NIL)
+ - ]
1005 akapila@postgresql.o 827 : 1 : twophase_enabled = true;
828 : :
829 : 93 : walrcv_create_slot(wrconn, opts.slot_name, false, twophase_enabled,
830 : : opts.failover, CRS_NOEXPORT_SNAPSHOT, NULL);
831 : :
832 [ + + ]: 93 : if (twophase_enabled)
833 : 1 : UpdateTwoPhaseState(subid, LOGICALREP_TWOPHASE_STATE_ENABLED);
834 : :
2550 peter_e@gmx.net 835 [ + - ]: 93 : ereport(NOTICE,
836 : : (errmsg("created replication slot \"%s\" on publisher",
837 : : opts.slot_name)));
838 : : }
839 : :
840 : : /*
841 : : * If the slot_name is specified without the create_slot option,
842 : : * it is possible that the user intends to use an existing slot on
843 : : * the publisher, so here we alter the failover property of the
844 : : * slot to match the failover value in subscription.
845 : : *
846 : : * We do not need to change the failover to false if the server
847 : : * does not support failover (e.g. pre-PG17).
848 : : */
75 akapila@postgresql.o 849 [ + - ]:GNC 6 : else if (opts.slot_name &&
850 [ + + + - ]: 6 : (opts.failover || walrcv_server_version(wrconn) >= 170000))
851 : : {
852 : 6 : walrcv_alter_slot(wrconn, opts.slot_name, opts.failover);
853 : : }
854 : : }
1626 peter@eisentraut.org 855 :CBC 1 : PG_FINALLY();
856 : : {
2636 peter_e@gmx.net 857 : 100 : walrcv_disconnect(wrconn);
858 : : }
859 [ + + ]: 100 : PG_END_TRY();
860 : : }
861 : : else
2579 862 [ + - ]: 39 : ereport(WARNING,
863 : : (errmsg("subscription was created, but is not connected"),
864 : : errhint("To initiate replication, you must manually create the replication slot, enable the subscription, and refresh the subscription.")));
865 : :
1910 andres@anarazel.de 866 : 138 : table_close(rel, RowExclusiveLock);
867 : :
739 868 : 138 : pgstat_create_subscription(subid);
869 : :
1013 akapila@postgresql.o 870 [ + + ]: 138 : if (opts.enabled)
2540 peter_e@gmx.net 871 : 93 : ApplyLauncherWakeupAtCommit();
872 : :
2642 873 : 138 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
874 : :
875 [ - + ]: 138 : InvokeObjectPostCreateHook(SubscriptionRelationId, subid, 0);
876 : :
877 : 138 : return myself;
878 : : }
879 : :
880 : : static void
745 akapila@postgresql.o 881 : 29 : AlterSubscription_refresh(Subscription *sub, bool copy_data,
882 : : List *validate_publications)
883 : : {
884 : : char *err;
885 : : List *pubrel_names;
886 : : List *subrel_states;
887 : : Oid *subrel_local_oids;
888 : : Oid *pubrel_local_oids;
889 : : ListCell *lc;
890 : : int off;
891 : : int remove_rel_len;
892 : : int subrel_count;
1157 893 : 29 : Relation rel = NULL;
894 : : typedef struct SubRemoveRels
895 : : {
896 : : Oid relid;
897 : : char state;
898 : : } SubRemoveRels;
899 : : SubRemoveRels *sub_remove_rels;
900 : : WalReceiverConn *wrconn;
901 : : bool must_use_password;
902 : :
903 : : /* Load the library providing us libpq calls. */
2579 peter_e@gmx.net 904 : 29 : load_file("libpqwalreceiver", false);
905 : :
906 : : /* Try to connect to the publisher. */
180 akapila@postgresql.o 907 [ + - + + ]:GNC 29 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
69 908 : 29 : wrconn = walrcv_connect(sub->conninfo, true, true, must_use_password,
909 : : sub->name, &err);
1073 alvherre@alvh.no-ip. 910 [ - + ]:CBC 28 : if (!wrconn)
1073 alvherre@alvh.no-ip. 911 [ # # ]:UBC 0 : ereport(ERROR,
912 : : (errcode(ERRCODE_CONNECTION_FAILURE),
913 : : errmsg("could not connect to the publisher: %s", err)));
914 : :
1157 akapila@postgresql.o 915 [ + - ]:CBC 28 : PG_TRY();
916 : : {
745 917 [ + + ]: 28 : if (validate_publications)
918 : 7 : check_publications(wrconn, validate_publications);
919 : :
920 : : /* Get the table list from publisher. */
1157 921 : 28 : pubrel_names = fetch_table_list(wrconn, sub->publications);
922 : :
923 : : /* Get local table list. */
627 michael@paquier.xyz 924 : 28 : subrel_states = GetSubscriptionRelations(sub->oid, false);
584 akapila@postgresql.o 925 : 28 : subrel_count = list_length(subrel_states);
926 : :
927 : : /*
928 : : * Build qsorted array of local table oids for faster lookup. This can
929 : : * potentially contain all tables in the database so speed of lookup
930 : : * is important.
931 : : */
932 : 28 : subrel_local_oids = palloc(subrel_count * sizeof(Oid));
1157 933 : 28 : off = 0;
934 [ + + + + : 109 : foreach(lc, subrel_states)
+ + ]
935 : : {
936 : 81 : SubscriptionRelState *relstate = (SubscriptionRelState *) lfirst(lc);
937 : :
938 : 81 : subrel_local_oids[off++] = relstate->relid;
939 : : }
584 940 : 28 : qsort(subrel_local_oids, subrel_count,
941 : : sizeof(Oid), oid_cmp);
942 : :
943 : 28 : check_publications_origin(wrconn, sub->publications, copy_data,
944 : : sub->origin, subrel_local_oids,
945 : : subrel_count, sub->name);
946 : :
947 : : /*
948 : : * Rels that we want to remove from subscription and drop any slots
949 : : * and origins corresponding to them.
950 : : */
951 : 28 : sub_remove_rels = palloc(subrel_count * sizeof(SubRemoveRels));
952 : :
953 : : /*
954 : : * Walk over the remote tables and try to match them to locally known
955 : : * tables. If the table is not known locally create a new state for
956 : : * it.
957 : : *
958 : : * Also builds array of local oids of remote tables for the next step.
959 : : */
1157 960 : 28 : off = 0;
961 : 28 : pubrel_local_oids = palloc(list_length(pubrel_names) * sizeof(Oid));
962 : :
963 [ + + + + : 110 : foreach(lc, pubrel_names)
+ + ]
964 : : {
965 : 82 : RangeVar *rv = (RangeVar *) lfirst(lc);
966 : : Oid relid;
967 : :
968 : 82 : relid = RangeVarGetRelid(rv, AccessShareLock, false);
969 : :
970 : : /* Check for supported relkind. */
971 : 82 : CheckSubscriptionRelkind(get_rel_relkind(relid),
972 : 82 : rv->schemaname, rv->relname);
973 : :
974 : 82 : pubrel_local_oids[off++] = relid;
975 : :
976 [ + + ]: 82 : if (!bsearch(&relid, subrel_local_oids,
977 : : subrel_count, sizeof(Oid), oid_cmp))
978 : : {
979 [ + + ]: 19 : AddSubscriptionRelState(sub->oid, relid,
980 : : copy_data ? SUBREL_STATE_INIT : SUBREL_STATE_READY,
981 : : InvalidXLogRecPtr, true);
982 [ - + ]: 19 : ereport(DEBUG1,
983 : : (errmsg_internal("table \"%s.%s\" added to subscription \"%s\"",
984 : : rv->schemaname, rv->relname, sub->name)));
985 : : }
986 : : }
987 : :
988 : : /*
989 : : * Next remove state for tables we should not care about anymore using
990 : : * the data we collected above
991 : : */
992 : 28 : qsort(pubrel_local_oids, list_length(pubrel_names),
993 : : sizeof(Oid), oid_cmp);
994 : :
995 : 28 : remove_rel_len = 0;
584 996 [ + + ]: 109 : for (off = 0; off < subrel_count; off++)
997 : : {
1157 998 : 81 : Oid relid = subrel_local_oids[off];
999 : :
1000 [ + + ]: 81 : if (!bsearch(&relid, pubrel_local_oids,
1001 : 81 : list_length(pubrel_names), sizeof(Oid), oid_cmp))
1002 : : {
1003 : : char state;
1004 : : XLogRecPtr statelsn;
1005 : :
1006 : : /*
1007 : : * Lock pg_subscription_rel with AccessExclusiveLock to
1008 : : * prevent any race conditions with the apply worker
1009 : : * re-launching workers at the same time this code is trying
1010 : : * to remove those tables.
1011 : : *
1012 : : * Even if new worker for this particular rel is restarted it
1013 : : * won't be able to make any progress as we hold exclusive
1014 : : * lock on pg_subscription_rel till the transaction end. It
1015 : : * will simply exit as there is no corresponding rel entry.
1016 : : *
1017 : : * This locking also ensures that the state of rels won't
1018 : : * change till we are done with this refresh operation.
1019 : : */
1020 [ + + ]: 18 : if (!rel)
1021 : 7 : rel = table_open(SubscriptionRelRelationId, AccessExclusiveLock);
1022 : :
1023 : : /* Last known rel state. */
1024 : 18 : state = GetSubscriptionRelState(sub->oid, relid, &statelsn);
1025 : :
1026 : 18 : sub_remove_rels[remove_rel_len].relid = relid;
1027 : 18 : sub_remove_rels[remove_rel_len++].state = state;
1028 : :
1029 : 18 : RemoveSubscriptionRel(sub->oid, relid);
1030 : :
1031 : 18 : logicalrep_worker_stop(sub->oid, relid);
1032 : :
1033 : : /*
1034 : : * For READY state, we would have already dropped the
1035 : : * tablesync origin.
1036 : : */
580 1037 [ - + ]: 18 : if (state != SUBREL_STATE_READY)
1038 : : {
1039 : : char originname[NAMEDATALEN];
1040 : :
1041 : : /*
1042 : : * Drop the tablesync's origin tracking if exists.
1043 : : *
1044 : : * It is possible that the origin is not yet created for
1045 : : * tablesync worker, this can happen for the states before
1046 : : * SUBREL_STATE_FINISHEDCOPY. The tablesync worker or
1047 : : * apply worker can also concurrently try to drop the
1048 : : * origin and by this time the origin might be already
1049 : : * removed. For these reasons, passing missing_ok = true.
1050 : : */
551 akapila@postgresql.o 1051 :UBC 0 : ReplicationOriginNameForLogicalRep(sub->oid, relid, originname,
1052 : : sizeof(originname));
1157 1053 : 0 : replorigin_drop_by_name(originname, true, false);
1054 : : }
1055 : :
1157 akapila@postgresql.o 1056 [ - + ]:CBC 18 : ereport(DEBUG1,
1057 : : (errmsg_internal("table \"%s.%s\" removed from subscription \"%s\"",
1058 : : get_namespace_name(get_rel_namespace(relid)),
1059 : : get_rel_name(relid),
1060 : : sub->name)));
1061 : : }
1062 : : }
1063 : :
1064 : : /*
1065 : : * Drop the tablesync slots associated with removed tables. This has
1066 : : * to be at the end because otherwise if there is an error while doing
1067 : : * the database operations we won't be able to rollback dropped slots.
1068 : : */
1069 [ + + ]: 46 : for (off = 0; off < remove_rel_len; off++)
1070 : : {
1071 [ - + ]: 18 : if (sub_remove_rels[off].state != SUBREL_STATE_READY &&
1157 akapila@postgresql.o 1072 [ # # ]:UBC 0 : sub_remove_rels[off].state != SUBREL_STATE_SYNCDONE)
1073 : : {
1074 : 0 : char syncslotname[NAMEDATALEN] = {0};
1075 : :
1076 : : /*
1077 : : * For READY/SYNCDONE states we know the tablesync slot has
1078 : : * already been dropped by the tablesync worker.
1079 : : *
1080 : : * For other states, there is no certainty, maybe the slot
1081 : : * does not exist yet. Also, if we fail after removing some of
1082 : : * the slots, next time, it will again try to drop already
1083 : : * dropped slots and fail. For these reasons, we allow
1084 : : * missing_ok = true for the drop.
1085 : : */
1154 1086 : 0 : ReplicationSlotNameForTablesync(sub->oid, sub_remove_rels[off].relid,
1087 : : syncslotname, sizeof(syncslotname));
1157 1088 : 0 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
1089 : : }
1090 : : }
1091 : : }
1092 : 0 : PG_FINALLY();
1093 : : {
1073 alvherre@alvh.no-ip. 1094 :CBC 28 : walrcv_disconnect(wrconn);
1095 : : }
1157 akapila@postgresql.o 1096 [ - + ]: 28 : PG_END_TRY();
1097 : :
1098 [ + + ]: 28 : if (rel)
1099 : 7 : table_close(rel, NoLock);
2579 peter_e@gmx.net 1100 : 28 : }
1101 : :
1102 : : /*
1103 : : * Alter the existing subscription.
1104 : : */
1105 : : ObjectAddress
1004 dean.a.rasheed@gmail 1106 : 218 : AlterSubscription(ParseState *pstate, AlterSubscriptionStmt *stmt,
1107 : : bool isTopLevel)
1108 : : {
1109 : : Relation rel;
1110 : : ObjectAddress myself;
1111 : : bool nulls[Natts_pg_subscription];
1112 : : bool replaces[Natts_pg_subscription];
1113 : : Datum values[Natts_pg_subscription];
1114 : : HeapTuple tup;
1115 : : Oid subid;
2579 peter_e@gmx.net 1116 : 218 : bool update_tuple = false;
1117 : : Subscription *sub;
1118 : : Form_pg_subscription form;
1119 : : bits32 supported_opts;
1013 akapila@postgresql.o 1120 : 218 : SubOpts opts = {0};
1121 : :
1910 andres@anarazel.de 1122 : 218 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
1123 : :
1124 : : /* Fetch the existing tuple. */
2642 peter_e@gmx.net 1125 : 218 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, MyDatabaseId,
1126 : : CStringGetDatum(stmt->subname));
1127 : :
1128 [ + + ]: 218 : if (!HeapTupleIsValid(tup))
1129 [ + - ]: 3 : ereport(ERROR,
1130 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
1131 : : errmsg("subscription \"%s\" does not exist",
1132 : : stmt->subname)));
1133 : :
1972 andres@anarazel.de 1134 : 215 : form = (Form_pg_subscription) GETSTRUCT(tup);
1135 : 215 : subid = form->oid;
1136 : :
1137 : : /* must be owner */
518 peter@eisentraut.org 1138 [ - + ]: 215 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
2325 peter_e@gmx.net 1139 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
2642 1140 : 0 : stmt->subname);
1141 : :
2532 peter_e@gmx.net 1142 :CBC 215 : sub = GetSubscription(subid, false);
1143 : :
1144 : : /*
1145 : : * Don't allow non-superuser modification of a subscription with
1146 : : * password_required=false.
1147 : : */
381 rhaas@postgresql.org 1148 [ + + - + ]: 215 : if (!sub->passwordrequired && !superuser())
381 rhaas@postgresql.org 1149 [ # # ]:UBC 0 : ereport(ERROR,
1150 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1151 : : errmsg("password_required=false is superuser-only"),
1152 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1153 : :
1154 : : /* Lock the subscription so nobody else can do anything with it. */
2477 peter_e@gmx.net 1155 :CBC 215 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
1156 : :
1157 : : /* Form a new tuple. */
2642 1158 : 215 : memset(values, 0, sizeof(values));
1159 : 215 : memset(nulls, false, sizeof(nulls));
1160 : 215 : memset(replaces, false, sizeof(replaces));
1161 : :
2579 1162 [ + + + + : 215 : switch (stmt->kind)
+ + + - ]
1163 : : {
1164 : 90 : case ALTER_SUBSCRIPTION_OPTIONS:
1165 : : {
1013 akapila@postgresql.o 1166 : 90 : supported_opts = (SUBOPT_SLOT_NAME |
1167 : : SUBOPT_SYNCHRONOUS_COMMIT | SUBOPT_BINARY |
1168 : : SUBOPT_STREAMING | SUBOPT_DISABLE_ON_ERR |
1169 : : SUBOPT_PASSWORD_REQUIRED |
1170 : : SUBOPT_RUN_AS_OWNER | SUBOPT_FAILOVER |
1171 : : SUBOPT_ORIGIN);
1172 : :
1004 dean.a.rasheed@gmail 1173 : 90 : parse_subscription_options(pstate, stmt->options,
1174 : : supported_opts, &opts);
1175 : :
1013 akapila@postgresql.o 1176 [ + + ]: 78 : if (IsSet(opts.specified_opts, SUBOPT_SLOT_NAME))
1177 : : {
1178 : : /*
1179 : : * The subscription must be disabled to allow slot_name as
1180 : : * 'none', otherwise, the apply worker will repeatedly try
1181 : : * to stream the data using that slot_name which neither
1182 : : * exists on the publisher nor the user will be allowed to
1183 : : * create it.
1184 : : */
1185 [ - + - - ]: 29 : if (sub->enabled && !opts.slot_name)
2532 peter_e@gmx.net 1186 [ # # ]:UBC 0 : ereport(ERROR,
1187 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1188 : : errmsg("cannot set %s for enabled subscription",
1189 : : "slot_name = NONE")));
1190 : :
1013 akapila@postgresql.o 1191 [ + + ]:CBC 29 : if (opts.slot_name)
2532 peter_e@gmx.net 1192 : 3 : values[Anum_pg_subscription_subslotname - 1] =
1013 akapila@postgresql.o 1193 : 3 : DirectFunctionCall1(namein, CStringGetDatum(opts.slot_name));
1194 : : else
2532 peter_e@gmx.net 1195 : 26 : nulls[Anum_pg_subscription_subslotname - 1] = true;
2557 1196 : 29 : replaces[Anum_pg_subscription_subslotname - 1] = true;
1197 : : }
1198 : :
1013 akapila@postgresql.o 1199 [ + + ]: 78 : if (opts.synchronous_commit)
1200 : : {
2557 peter_e@gmx.net 1201 : 3 : values[Anum_pg_subscription_subsynccommit - 1] =
1013 akapila@postgresql.o 1202 : 3 : CStringGetTextDatum(opts.synchronous_commit);
2557 peter_e@gmx.net 1203 : 3 : replaces[Anum_pg_subscription_subsynccommit - 1] = true;
1204 : : }
1205 : :
1013 akapila@postgresql.o 1206 [ + + ]: 78 : if (IsSet(opts.specified_opts, SUBOPT_BINARY))
1207 : : {
1366 tgl@sss.pgh.pa.us 1208 : 9 : values[Anum_pg_subscription_subbinary - 1] =
1013 akapila@postgresql.o 1209 : 9 : BoolGetDatum(opts.binary);
1366 tgl@sss.pgh.pa.us 1210 : 9 : replaces[Anum_pg_subscription_subbinary - 1] = true;
1211 : : }
1212 : :
1013 akapila@postgresql.o 1213 [ + + ]: 78 : if (IsSet(opts.specified_opts, SUBOPT_STREAMING))
1214 : : {
1319 1215 : 15 : values[Anum_pg_subscription_substream - 1] =
461 1216 : 15 : CharGetDatum(opts.streaming);
1319 1217 : 15 : replaces[Anum_pg_subscription_substream - 1] = true;
1218 : : }
1219 : :
762 1220 [ + + ]: 78 : if (IsSet(opts.specified_opts, SUBOPT_DISABLE_ON_ERR))
1221 : : {
1222 : : values[Anum_pg_subscription_subdisableonerr - 1]
1223 : 3 : = BoolGetDatum(opts.disableonerr);
1224 : : replaces[Anum_pg_subscription_subdisableonerr - 1]
1225 : 3 : = true;
1226 : : }
1227 : :
381 rhaas@postgresql.org 1228 [ + + ]: 78 : if (IsSet(opts.specified_opts, SUBOPT_PASSWORD_REQUIRED))
1229 : : {
1230 : : /* Non-superuser may not disable password_required. */
1231 [ + + - + ]: 6 : if (!opts.passwordrequired && !superuser())
381 rhaas@postgresql.org 1232 [ # # ]:UBC 0 : ereport(ERROR,
1233 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1234 : : errmsg("password_required=false is superuser-only"),
1235 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1236 : :
1237 : : values[Anum_pg_subscription_subpasswordrequired - 1]
381 rhaas@postgresql.org 1238 :CBC 6 : = BoolGetDatum(opts.passwordrequired);
1239 : : replaces[Anum_pg_subscription_subpasswordrequired - 1]
1240 : 6 : = true;
1241 : : }
1242 : :
214 akapila@postgresql.o 1243 [ + + ]: 78 : if (IsSet(opts.specified_opts, SUBOPT_RUN_AS_OWNER))
1244 : : {
1245 : 7 : values[Anum_pg_subscription_subrunasowner - 1] =
1246 : 7 : BoolGetDatum(opts.runasowner);
1247 : 7 : replaces[Anum_pg_subscription_subrunasowner - 1] = true;
1248 : : }
1249 : :
75 akapila@postgresql.o 1250 [ + + ]:GNC 78 : if (IsSet(opts.specified_opts, SUBOPT_FAILOVER))
1251 : : {
1252 [ - + ]: 4 : if (!sub->slotname)
75 akapila@postgresql.o 1253 [ # # ]:UNC 0 : ereport(ERROR,
1254 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1255 : : errmsg("cannot set %s for a subscription that does not have a slot name",
1256 : : "failover")));
1257 : :
1258 : : /*
1259 : : * Do not allow changing the failover state if the
1260 : : * subscription is enabled. This is because the failover
1261 : : * state of the slot on the publisher cannot be modified
1262 : : * if the slot is currently acquired by the apply worker.
1263 : : */
75 akapila@postgresql.o 1264 [ + + ]:GNC 4 : if (sub->enabled)
1265 [ + - ]: 1 : ereport(ERROR,
1266 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1267 : : errmsg("cannot set %s for enabled subscription",
1268 : : "failover")));
1269 : :
1270 : 3 : values[Anum_pg_subscription_subfailover - 1] =
1271 : 3 : BoolGetDatum(opts.failover);
1272 : 3 : replaces[Anum_pg_subscription_subfailover - 1] = true;
1273 : : }
1274 : :
633 akapila@postgresql.o 1275 [ + + ]:CBC 77 : if (IsSet(opts.specified_opts, SUBOPT_ORIGIN))
1276 : : {
1277 : 3 : values[Anum_pg_subscription_suborigin - 1] =
1278 : 3 : CStringGetTextDatum(opts.origin);
1279 : 3 : replaces[Anum_pg_subscription_suborigin - 1] = true;
1280 : : }
1281 : :
2579 peter_e@gmx.net 1282 : 77 : update_tuple = true;
1283 : 77 : break;
1284 : : }
1285 : :
1286 : 35 : case ALTER_SUBSCRIPTION_ENABLED:
1287 : : {
1004 dean.a.rasheed@gmail 1288 : 35 : parse_subscription_options(pstate, stmt->options,
1289 : : SUBOPT_ENABLED, &opts);
1013 akapila@postgresql.o 1290 [ - + ]: 35 : Assert(IsSet(opts.specified_opts, SUBOPT_ENABLED));
1291 : :
1292 [ + + + - ]: 35 : if (!sub->slotname && opts.enabled)
2532 peter_e@gmx.net 1293 [ + - ]: 3 : ereport(ERROR,
1294 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1295 : : errmsg("cannot enable subscription that does not have a slot name")));
1296 : :
2579 1297 : 32 : values[Anum_pg_subscription_subenabled - 1] =
1013 akapila@postgresql.o 1298 : 32 : BoolGetDatum(opts.enabled);
2579 peter_e@gmx.net 1299 : 32 : replaces[Anum_pg_subscription_subenabled - 1] = true;
1300 : :
1013 akapila@postgresql.o 1301 [ + + ]: 32 : if (opts.enabled)
2546 peter_e@gmx.net 1302 : 19 : ApplyLauncherWakeupAtCommit();
1303 : :
2579 1304 : 32 : update_tuple = true;
1305 : 32 : break;
1306 : : }
1307 : :
1308 : 10 : case ALTER_SUBSCRIPTION_CONNECTION:
1309 : : /* Load the library providing us libpq calls. */
2533 1310 : 10 : load_file("libpqwalreceiver", false);
1311 : : /* Check the connection info string. */
381 rhaas@postgresql.org 1312 [ + - + + ]: 10 : walrcv_check_conninfo(stmt->conninfo,
1313 : : sub->passwordrequired && !sub->ownersuperuser);
1314 : :
2579 peter_e@gmx.net 1315 : 7 : values[Anum_pg_subscription_subconninfo - 1] =
1316 : 7 : CStringGetTextDatum(stmt->conninfo);
1317 : 7 : replaces[Anum_pg_subscription_subconninfo - 1] = true;
1318 : 7 : update_tuple = true;
1319 : 7 : break;
1320 : :
1104 peter@eisentraut.org 1321 : 14 : case ALTER_SUBSCRIPTION_SET_PUBLICATION:
1322 : : {
1013 akapila@postgresql.o 1323 : 14 : supported_opts = SUBOPT_COPY_DATA | SUBOPT_REFRESH;
1004 dean.a.rasheed@gmail 1324 : 14 : parse_subscription_options(pstate, stmt->options,
1325 : : supported_opts, &opts);
1326 : :
2579 peter_e@gmx.net 1327 : 14 : values[Anum_pg_subscription_subpublications - 1] =
2524 bruce@momjian.us 1328 : 14 : publicationListToArray(stmt->publication);
2579 peter_e@gmx.net 1329 : 14 : replaces[Anum_pg_subscription_subpublications - 1] = true;
1330 : :
1331 : 14 : update_tuple = true;
1332 : :
1333 : : /* Refresh if user asked us to. */
1013 akapila@postgresql.o 1334 [ + + ]: 14 : if (opts.refresh)
1335 : : {
2532 peter_e@gmx.net 1336 [ - + ]: 11 : if (!sub->enabled)
2532 peter_e@gmx.net 1337 [ # # ]:UBC 0 : ereport(ERROR,
1338 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1339 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
1340 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION ... WITH (refresh = false).")));
1341 : :
1342 : : /*
1343 : : * See ALTER_SUBSCRIPTION_REFRESH for details why this is
1344 : : * not allowed.
1345 : : */
1005 akapila@postgresql.o 1346 [ - + - - ]:CBC 11 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1005 akapila@postgresql.o 1347 [ # # ]:UBC 0 : ereport(ERROR,
1348 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1349 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
1350 : : errhint("Use ALTER SUBSCRIPTION ... SET PUBLICATION with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
1351 : :
1157 akapila@postgresql.o 1352 :CBC 11 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
1353 : :
1354 : : /* Make sure refresh sees the new list of publications. */
2579 peter_e@gmx.net 1355 : 5 : sub->publications = stmt->publication;
1356 : :
745 akapila@postgresql.o 1357 : 5 : AlterSubscription_refresh(sub, opts.copy_data,
1358 : : stmt->publication);
1359 : : }
1360 : :
2579 peter_e@gmx.net 1361 : 8 : break;
1362 : : }
1363 : :
1104 peter@eisentraut.org 1364 : 27 : case ALTER_SUBSCRIPTION_ADD_PUBLICATION:
1365 : : case ALTER_SUBSCRIPTION_DROP_PUBLICATION:
1366 : : {
1367 : : List *publist;
1013 akapila@postgresql.o 1368 : 27 : bool isadd = stmt->kind == ALTER_SUBSCRIPTION_ADD_PUBLICATION;
1369 : :
964 1370 : 27 : supported_opts = SUBOPT_REFRESH | SUBOPT_COPY_DATA;
1004 dean.a.rasheed@gmail 1371 : 27 : parse_subscription_options(pstate, stmt->options,
1372 : : supported_opts, &opts);
1373 : :
1013 akapila@postgresql.o 1374 : 27 : publist = merge_publications(sub->publications, stmt->publication, isadd, stmt->subname);
1104 peter@eisentraut.org 1375 : 9 : values[Anum_pg_subscription_subpublications - 1] =
1376 : 9 : publicationListToArray(publist);
1377 : 9 : replaces[Anum_pg_subscription_subpublications - 1] = true;
1378 : :
1379 : 9 : update_tuple = true;
1380 : :
1381 : : /* Refresh if user asked us to. */
1013 akapila@postgresql.o 1382 [ + + ]: 9 : if (opts.refresh)
1383 : : {
1384 : : /* We only need to validate user specified publications. */
745 1385 [ + + ]: 3 : List *validate_publications = (isadd) ? stmt->publication : NULL;
1386 : :
1104 peter@eisentraut.org 1387 [ - + ]: 3 : if (!sub->enabled)
1104 peter@eisentraut.org 1388 [ # # # # ]:UBC 0 : ereport(ERROR,
1389 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1390 : : errmsg("ALTER SUBSCRIPTION with refresh is not allowed for disabled subscriptions"),
1391 : : /* translator: %s is an SQL ALTER command */
1392 : : errhint("Use %s instead.",
1393 : : isadd ?
1394 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION ... WITH (refresh = false)" :
1395 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION ... WITH (refresh = false)")));
1396 : :
1397 : : /*
1398 : : * See ALTER_SUBSCRIPTION_REFRESH for details why this is
1399 : : * not allowed.
1400 : : */
1005 akapila@postgresql.o 1401 [ - + - - ]:CBC 3 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1005 akapila@postgresql.o 1402 [ # # # # ]:UBC 0 : ereport(ERROR,
1403 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1404 : : errmsg("ALTER SUBSCRIPTION with refresh and copy_data is not allowed when two_phase is enabled"),
1405 : : /* translator: %s is an SQL ALTER command */
1406 : : errhint("Use %s with refresh = false, or with copy_data = false, or use DROP/CREATE SUBSCRIPTION.",
1407 : : isadd ?
1408 : : "ALTER SUBSCRIPTION ... ADD PUBLICATION" :
1409 : : "ALTER SUBSCRIPTION ... DROP PUBLICATION")));
1410 : :
1104 peter@eisentraut.org 1411 :CBC 3 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION with refresh");
1412 : :
1413 : : /* Refresh the new list of publications. */
964 akapila@postgresql.o 1414 : 3 : sub->publications = publist;
1415 : :
745 1416 : 3 : AlterSubscription_refresh(sub, opts.copy_data,
1417 : : validate_publications);
1418 : : }
1419 : :
1104 peter@eisentraut.org 1420 : 9 : break;
1421 : : }
1422 : :
2579 peter_e@gmx.net 1423 : 27 : case ALTER_SUBSCRIPTION_REFRESH:
1424 : : {
2532 1425 [ + + ]: 27 : if (!sub->enabled)
1426 [ + - ]: 3 : ereport(ERROR,
1427 : : (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1428 : : errmsg("ALTER SUBSCRIPTION ... REFRESH is not allowed for disabled subscriptions")));
1429 : :
1004 dean.a.rasheed@gmail 1430 : 24 : parse_subscription_options(pstate, stmt->options,
1431 : : SUBOPT_COPY_DATA, &opts);
1432 : :
1433 : : /*
1434 : : * The subscription option "two_phase" requires that
1435 : : * replication has passed the initial table synchronization
1436 : : * phase before the two_phase becomes properly enabled.
1437 : : *
1438 : : * But, having reached this two-phase commit "enabled" state
1439 : : * we must not allow any subsequent table initialization to
1440 : : * occur. So the ALTER SUBSCRIPTION ... REFRESH is disallowed
1441 : : * when the user had requested two_phase = on mode.
1442 : : *
1443 : : * The exception to this restriction is when copy_data =
1444 : : * false, because when copy_data is false the tablesync will
1445 : : * start already in READY state and will exit directly without
1446 : : * doing anything.
1447 : : *
1448 : : * For more details see comments atop worker.c.
1449 : : */
1005 akapila@postgresql.o 1450 [ - + - - ]: 24 : if (sub->twophasestate == LOGICALREP_TWOPHASE_STATE_ENABLED && opts.copy_data)
1005 akapila@postgresql.o 1451 [ # # ]:UBC 0 : ereport(ERROR,
1452 : : (errcode(ERRCODE_SYNTAX_ERROR),
1453 : : errmsg("ALTER SUBSCRIPTION ... REFRESH with copy_data is not allowed when two_phase is enabled"),
1454 : : errhint("Use ALTER SUBSCRIPTION ... REFRESH with copy_data = false, or use DROP/CREATE SUBSCRIPTION.")));
1455 : :
1157 akapila@postgresql.o 1456 :CBC 24 : PreventInTransactionBlock(isTopLevel, "ALTER SUBSCRIPTION ... REFRESH");
1457 : :
745 1458 : 21 : AlterSubscription_refresh(sub, opts.copy_data, NULL);
1459 : :
2579 peter_e@gmx.net 1460 : 20 : break;
1461 : : }
1462 : :
754 akapila@postgresql.o 1463 : 12 : case ALTER_SUBSCRIPTION_SKIP:
1464 : : {
1465 : 12 : parse_subscription_options(pstate, stmt->options, SUBOPT_LSN, &opts);
1466 : :
1467 : : /* ALTER SUBSCRIPTION ... SKIP supports only LSN option */
1468 [ - + ]: 9 : Assert(IsSet(opts.specified_opts, SUBOPT_LSN));
1469 : :
1470 : : /*
1471 : : * If the user sets subskiplsn, we do a sanity check to make
1472 : : * sure that the specified LSN is a probable value.
1473 : : */
1474 [ + + ]: 9 : if (!XLogRecPtrIsInvalid(opts.lsn))
1475 : : {
1476 : : RepOriginId originid;
1477 : : char originname[NAMEDATALEN];
1478 : : XLogRecPtr remote_lsn;
1479 : :
551 1480 : 6 : ReplicationOriginNameForLogicalRep(subid, InvalidOid,
1481 : : originname, sizeof(originname));
754 1482 : 6 : originid = replorigin_by_name(originname, false);
1483 : 6 : remote_lsn = replorigin_get_progress(originid, false);
1484 : :
1485 : : /* Check the given LSN is at least a future LSN */
1486 [ + + - + ]: 6 : if (!XLogRecPtrIsInvalid(remote_lsn) && opts.lsn < remote_lsn)
754 akapila@postgresql.o 1487 [ # # ]:UBC 0 : ereport(ERROR,
1488 : : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1489 : : errmsg("skip WAL location (LSN %X/%X) must be greater than origin LSN %X/%X",
1490 : : LSN_FORMAT_ARGS(opts.lsn),
1491 : : LSN_FORMAT_ARGS(remote_lsn))));
1492 : : }
1493 : :
754 akapila@postgresql.o 1494 :CBC 9 : values[Anum_pg_subscription_subskiplsn - 1] = LSNGetDatum(opts.lsn);
1495 : 9 : replaces[Anum_pg_subscription_subskiplsn - 1] = true;
1496 : :
1497 : 9 : update_tuple = true;
1498 : 9 : break;
1499 : : }
1500 : :
2579 peter_e@gmx.net 1501 :UBC 0 : default:
1502 [ # # ]: 0 : elog(ERROR, "unrecognized ALTER SUBSCRIPTION kind %d",
1503 : : stmt->kind);
1504 : : }
1505 : :
1506 : : /* Update the catalog if needed. */
2579 peter_e@gmx.net 1507 [ + + ]:CBC 162 : if (update_tuple)
1508 : : {
1509 : 142 : tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,
1510 : : replaces);
1511 : :
1512 : 142 : CatalogTupleUpdate(rel, &tup->t_self, tup);
1513 : :
1514 : 142 : heap_freetuple(tup);
1515 : : }
1516 : :
1517 : : /*
1518 : : * Try to acquire the connection necessary for altering slot.
1519 : : *
1520 : : * This has to be at the end because otherwise if there is an error while
1521 : : * doing the database operations we won't be able to rollback altered
1522 : : * slot.
1523 : : */
75 akapila@postgresql.o 1524 [ + + ]:GNC 162 : if (replaces[Anum_pg_subscription_subfailover - 1])
1525 : : {
1526 : : bool must_use_password;
1527 : : char *err;
1528 : : WalReceiverConn *wrconn;
1529 : :
1530 : : /* Load the library providing us libpq calls. */
1531 : 3 : load_file("libpqwalreceiver", false);
1532 : :
1533 : : /* Try to connect to the publisher. */
1534 [ + - - + ]: 3 : must_use_password = sub->passwordrequired && !sub->ownersuperuser;
69 1535 : 3 : wrconn = walrcv_connect(sub->conninfo, true, true, must_use_password,
1536 : : sub->name, &err);
75 1537 [ - + ]: 3 : if (!wrconn)
75 akapila@postgresql.o 1538 [ # # ]:UNC 0 : ereport(ERROR,
1539 : : (errcode(ERRCODE_CONNECTION_FAILURE),
1540 : : errmsg("could not connect to the publisher: %s", err)));
1541 : :
75 akapila@postgresql.o 1542 [ + - ]:GNC 3 : PG_TRY();
1543 : : {
1544 : 3 : walrcv_alter_slot(wrconn, sub->slotname, opts.failover);
1545 : : }
75 akapila@postgresql.o 1546 :UNC 0 : PG_FINALLY();
1547 : : {
75 akapila@postgresql.o 1548 :GNC 3 : walrcv_disconnect(wrconn);
1549 : : }
1550 [ - + ]: 3 : PG_END_TRY();
1551 : : }
1552 : :
1910 andres@anarazel.de 1553 :CBC 162 : table_close(rel, RowExclusiveLock);
1554 : :
2579 peter_e@gmx.net 1555 : 162 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
1556 : :
2642 1557 [ - + ]: 162 : InvokeObjectPostAlterHook(SubscriptionRelationId, subid, 0);
1558 : :
1559 : : /* Wake up related replication workers to handle this change quickly. */
464 tgl@sss.pgh.pa.us 1560 : 162 : LogicalRepWorkersWakeupAtCommit(subid);
1561 : :
2642 peter_e@gmx.net 1562 : 162 : return myself;
1563 : : }
1564 : :
1565 : : /*
1566 : : * Drop a subscription
1567 : : */
1568 : : void
2599 1569 : 96 : DropSubscription(DropSubscriptionStmt *stmt, bool isTopLevel)
1570 : : {
1571 : : Relation rel;
1572 : : ObjectAddress myself;
1573 : : HeapTuple tup;
1574 : : Oid subid;
1575 : : Oid subowner;
1576 : : Datum datum;
1577 : : bool isnull;
1578 : : char *subname;
1579 : : char *conninfo;
1580 : : char *slotname;
1581 : : List *subworkers;
1582 : : ListCell *lc;
1583 : : char originname[NAMEDATALEN];
2642 1584 : 96 : char *err = NULL;
1585 : : WalReceiverConn *wrconn;
1586 : : Form_pg_subscription form;
1587 : : List *rstates;
1588 : : bool must_use_password;
1589 : :
1590 : : /*
1591 : : * Lock pg_subscription with AccessExclusiveLock to ensure that the
1592 : : * launcher doesn't restart new worker during dropping the subscription
1593 : : */
1910 andres@anarazel.de 1594 : 96 : rel = table_open(SubscriptionRelationId, AccessExclusiveLock);
1595 : :
2642 peter_e@gmx.net 1596 : 96 : tup = SearchSysCache2(SUBSCRIPTIONNAME, MyDatabaseId,
1597 : 96 : CStringGetDatum(stmt->subname));
1598 : :
1599 [ + + ]: 96 : if (!HeapTupleIsValid(tup))
1600 : : {
1910 andres@anarazel.de 1601 : 6 : table_close(rel, NoLock);
1602 : :
2642 peter_e@gmx.net 1603 [ + + ]: 6 : if (!stmt->missing_ok)
1604 [ + - ]: 3 : ereport(ERROR,
1605 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
1606 : : errmsg("subscription \"%s\" does not exist",
1607 : : stmt->subname)));
1608 : : else
1609 [ + - ]: 3 : ereport(NOTICE,
1610 : : (errmsg("subscription \"%s\" does not exist, skipping",
1611 : : stmt->subname)));
1612 : :
1613 : 38 : return;
1614 : : }
1615 : :
1972 andres@anarazel.de 1616 : 90 : form = (Form_pg_subscription) GETSTRUCT(tup);
1617 : 90 : subid = form->oid;
381 rhaas@postgresql.org 1618 : 90 : subowner = form->subowner;
1619 [ + + + + ]: 90 : must_use_password = !superuser_arg(subowner) && form->subpasswordrequired;
1620 : :
1621 : : /* must be owner */
518 peter@eisentraut.org 1622 [ - + ]: 90 : if (!object_ownercheck(SubscriptionRelationId, subid, GetUserId()))
2325 peter_e@gmx.net 1623 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
2642 1624 : 0 : stmt->subname);
1625 : :
1626 : : /* DROP hook for the subscription being removed */
2642 peter_e@gmx.net 1627 [ - + ]:CBC 90 : InvokeObjectDropHook(SubscriptionRelationId, subid, 0);
1628 : :
1629 : : /*
1630 : : * Lock the subscription so nobody else can do anything with it (including
1631 : : * the replication workers).
1632 : : */
1633 : 90 : LockSharedObject(SubscriptionRelationId, subid, 0, AccessExclusiveLock);
1634 : :
1635 : : /* Get subname */
386 dgustafsson@postgres 1636 : 90 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID, tup,
1637 : : Anum_pg_subscription_subname);
2642 peter_e@gmx.net 1638 : 90 : subname = pstrdup(NameStr(*DatumGetName(datum)));
1639 : :
1640 : : /* Get conninfo */
386 dgustafsson@postgres 1641 : 90 : datum = SysCacheGetAttrNotNull(SUBSCRIPTIONOID, tup,
1642 : : Anum_pg_subscription_subconninfo);
2557 peter_e@gmx.net 1643 : 90 : conninfo = TextDatumGetCString(datum);
1644 : :
1645 : : /* Get slotname */
2642 1646 : 90 : datum = SysCacheGetAttr(SUBSCRIPTIONOID, tup,
1647 : : Anum_pg_subscription_subslotname, &isnull);
2532 1648 [ + + ]: 90 : if (!isnull)
1649 : 54 : slotname = pstrdup(NameStr(*DatumGetName(datum)));
1650 : : else
1651 : 36 : slotname = NULL;
1652 : :
1653 : : /*
1654 : : * Since dropping a replication slot is not transactional, the replication
1655 : : * slot stays dropped even if the transaction rolls back. So we cannot
1656 : : * run DROP SUBSCRIPTION inside a transaction block if dropping the
1657 : : * replication slot. Also, in this case, we report a message for dropping
1658 : : * the subscription to the cumulative stats system.
1659 : : *
1660 : : * XXX The command name should really be something like "DROP SUBSCRIPTION
1661 : : * of a subscription that is associated with a replication slot", but we
1662 : : * don't have the proper facilities for that.
1663 : : */
1664 [ + + ]: 90 : if (slotname)
2249 1665 : 54 : PreventInTransactionBlock(isTopLevel, "DROP SUBSCRIPTION");
1666 : :
2642 1667 : 87 : ObjectAddressSet(myself, SubscriptionRelationId, subid);
1668 : 87 : EventTriggerSQLDropAddObject(&myself, true, true);
1669 : :
1670 : : /* Remove the tuple from catalog. */
2629 tgl@sss.pgh.pa.us 1671 : 87 : CatalogTupleDelete(rel, &tup->t_self);
1672 : :
2642 peter_e@gmx.net 1673 : 87 : ReleaseSysCache(tup);
1674 : :
1675 : : /*
1676 : : * Stop all the subscription workers immediately.
1677 : : *
1678 : : * This is necessary if we are dropping the replication slot, so that the
1679 : : * slot becomes accessible.
1680 : : *
1681 : : * It is also necessary if the subscription is disabled and was disabled
1682 : : * in the same transaction. Then the workers haven't seen the disabling
1683 : : * yet and will still be running, leading to hangs later when we want to
1684 : : * drop the replication origin. If the subscription was disabled before
1685 : : * this transaction, then there shouldn't be any workers left, so this
1686 : : * won't make a difference.
1687 : : *
1688 : : * New workers won't be started because we hold an exclusive lock on the
1689 : : * subscription till the end of the transaction.
1690 : : */
2445 1691 : 87 : LWLockAcquire(LogicalRepWorkerLock, LW_SHARED);
1692 : 87 : subworkers = logicalrep_workers_find(subid, false);
1693 : 87 : LWLockRelease(LogicalRepWorkerLock);
2435 tgl@sss.pgh.pa.us 1694 [ + + + + : 140 : foreach(lc, subworkers)
+ + ]
1695 : : {
2445 peter_e@gmx.net 1696 : 53 : LogicalRepWorker *w = (LogicalRepWorker *) lfirst(lc);
1697 : :
2401 1698 : 53 : logicalrep_worker_stop(w->subid, w->relid);
1699 : : }
2445 1700 : 87 : list_free(subworkers);
1701 : :
1702 : : /*
1703 : : * Remove the no-longer-useful entry in the launcher's table of apply
1704 : : * worker start times.
1705 : : *
1706 : : * If this transaction rolls back, the launcher might restart a failed
1707 : : * apply worker before wal_retrieve_retry_interval milliseconds have
1708 : : * elapsed, but that's pretty harmless.
1709 : : */
448 tgl@sss.pgh.pa.us 1710 : 87 : ApplyLauncherForgetWorkerStartTime(subid);
1711 : :
1712 : : /*
1713 : : * Cleanup of tablesync replication origins.
1714 : : *
1715 : : * Any READY-state relations would already have dealt with clean-ups.
1716 : : *
1717 : : * Note that the state can't change because we have already stopped both
1718 : : * the apply and tablesync workers and they can't restart because of
1719 : : * exclusive lock on the subscription.
1720 : : */
627 michael@paquier.xyz 1721 : 87 : rstates = GetSubscriptionRelations(subid, true);
1157 akapila@postgresql.o 1722 [ + + + + : 90 : foreach(lc, rstates)
+ + ]
1723 : : {
1724 : 3 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
1725 : 3 : Oid relid = rstate->relid;
1726 : :
1727 : : /* Only cleanup resources of tablesync workers */
1728 [ - + ]: 3 : if (!OidIsValid(relid))
1157 akapila@postgresql.o 1729 :UBC 0 : continue;
1730 : :
1731 : : /*
1732 : : * Drop the tablesync's origin tracking if exists.
1733 : : *
1734 : : * It is possible that the origin is not yet created for tablesync
1735 : : * worker so passing missing_ok = true. This can happen for the states
1736 : : * before SUBREL_STATE_FINISHEDCOPY.
1737 : : */
551 akapila@postgresql.o 1738 :CBC 3 : ReplicationOriginNameForLogicalRep(subid, relid, originname,
1739 : : sizeof(originname));
580 1740 : 3 : replorigin_drop_by_name(originname, true, false);
1741 : : }
1742 : :
1743 : : /* Clean up dependencies */
2641 alvherre@alvh.no-ip. 1744 : 87 : deleteSharedDependencyRecordsFor(SubscriptionRelationId, subid, 0);
1745 : :
1746 : : /* Remove any associated relation synchronization states. */
2579 peter_e@gmx.net 1747 : 87 : RemoveSubscriptionRel(subid, InvalidOid);
1748 : :
1749 : : /* Remove the origin tracking if exists. */
551 akapila@postgresql.o 1750 : 87 : ReplicationOriginNameForLogicalRep(subid, InvalidOid, originname, sizeof(originname));
1159 1751 : 87 : replorigin_drop_by_name(originname, true, false);
1752 : :
1753 : : /*
1754 : : * Tell the cumulative stats system that the subscription is getting
1755 : : * dropped.
1756 : : */
284 msawada@postgresql.o 1757 : 87 : pgstat_drop_subscription(subid);
1758 : :
1759 : : /*
1760 : : * If there is no slot associated with the subscription, we can finish
1761 : : * here.
1762 : : */
1157 akapila@postgresql.o 1763 [ + + + + ]: 87 : if (!slotname && rstates == NIL)
1764 : : {
1910 andres@anarazel.de 1765 : 35 : table_close(rel, NoLock);
2642 peter_e@gmx.net 1766 : 35 : return;
1767 : : }
1768 : :
1769 : : /*
1770 : : * Try to acquire the connection necessary for dropping slots.
1771 : : *
1772 : : * Note: If the slotname is NONE/NULL then we allow the command to finish
1773 : : * and users need to manually cleanup the apply and tablesync worker slots
1774 : : * later.
1775 : : *
1776 : : * This has to be at the end because otherwise if there is an error while
1777 : : * doing the database operations we won't be able to rollback dropped
1778 : : * slot.
1779 : : */
1780 : 52 : load_file("libpqwalreceiver", false);
1781 : :
69 akapila@postgresql.o 1782 :GNC 52 : wrconn = walrcv_connect(conninfo, true, true, must_use_password,
1783 : : subname, &err);
2642 peter_e@gmx.net 1784 [ - + ]:CBC 52 : if (wrconn == NULL)
1785 : : {
1157 akapila@postgresql.o 1786 [ # # ]:UBC 0 : if (!slotname)
1787 : : {
1788 : : /* be tidy */
1789 : 0 : list_free(rstates);
1790 : 0 : table_close(rel, NoLock);
1791 : 0 : return;
1792 : : }
1793 : : else
1794 : : {
1795 : 0 : ReportSlotConnectionError(rstates, subid, slotname, err);
1796 : : }
1797 : : }
1798 : :
1157 akapila@postgresql.o 1799 [ + - ]:CBC 52 : PG_TRY();
1800 : : {
1801 [ + + + + : 55 : foreach(lc, rstates)
+ + ]
1802 : : {
1803 : 3 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
1804 : 3 : Oid relid = rstate->relid;
1805 : :
1806 : : /* Only cleanup resources of tablesync workers */
1807 [ - + ]: 3 : if (!OidIsValid(relid))
1157 akapila@postgresql.o 1808 :UBC 0 : continue;
1809 : :
1810 : : /*
1811 : : * Drop the tablesync slots associated with removed tables.
1812 : : *
1813 : : * For SYNCDONE/READY states, the tablesync slot is known to have
1814 : : * already been dropped by the tablesync worker.
1815 : : *
1816 : : * For other states, there is no certainty, maybe the slot does
1817 : : * not exist yet. Also, if we fail after removing some of the
1818 : : * slots, next time, it will again try to drop already dropped
1819 : : * slots and fail. For these reasons, we allow missing_ok = true
1820 : : * for the drop.
1821 : : */
1157 akapila@postgresql.o 1822 [ + + ]:CBC 3 : if (rstate->state != SUBREL_STATE_SYNCDONE)
1823 : : {
1824 : 2 : char syncslotname[NAMEDATALEN] = {0};
1825 : :
1154 1826 : 2 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
1827 : : sizeof(syncslotname));
1157 1828 : 2 : ReplicationSlotDropAtPubNode(wrconn, syncslotname, true);
1829 : : }
1830 : : }
1831 : :
1832 : 52 : list_free(rstates);
1833 : :
1834 : : /*
1835 : : * If there is a slot associated with the subscription, then drop the
1836 : : * replication slot at the publisher.
1837 : : */
1838 [ + + ]: 52 : if (slotname)
1839 : 51 : ReplicationSlotDropAtPubNode(wrconn, slotname, false);
1840 : : }
1157 akapila@postgresql.o 1841 :UBC 0 : PG_FINALLY();
1842 : : {
1157 akapila@postgresql.o 1843 :CBC 52 : walrcv_disconnect(wrconn);
1844 : : }
1845 [ - + ]: 52 : PG_END_TRY();
1846 : :
1847 : 52 : table_close(rel, NoLock);
1848 : : }
1849 : :
1850 : : /*
1851 : : * Drop the replication slot at the publisher node using the replication
1852 : : * connection.
1853 : : *
1854 : : * missing_ok - if true then only issue a LOG message if the slot doesn't
1855 : : * exist.
1856 : : */
1857 : : void
1858 : 220 : ReplicationSlotDropAtPubNode(WalReceiverConn *wrconn, char *slotname, bool missing_ok)
1859 : : {
1860 : : StringInfoData cmd;
1861 : :
1862 [ - + ]: 220 : Assert(wrconn);
1863 : :
1864 : 220 : load_file("libpqwalreceiver", false);
1865 : :
1866 : 220 : initStringInfo(&cmd);
1867 : 220 : appendStringInfo(&cmd, "DROP_REPLICATION_SLOT %s WAIT", quote_identifier(slotname));
1868 : :
2594 fujii@postgresql.org 1869 [ + - ]: 220 : PG_TRY();
1870 : : {
1871 : : WalRcvExecResult *res;
1872 : :
2579 peter_e@gmx.net 1873 : 220 : res = walrcv_exec(wrconn, cmd.data, 0, NULL);
1874 : :
1157 akapila@postgresql.o 1875 [ + - ]: 220 : if (res->status == WALRCV_OK_COMMAND)
1876 : : {
1877 : : /* NOTICE. Success. */
1878 [ + + ]: 220 : ereport(NOTICE,
1879 : : (errmsg("dropped replication slot \"%s\" on publisher",
1880 : : slotname)));
1881 : : }
1157 akapila@postgresql.o 1882 [ # # # # ]:UBC 0 : else if (res->status == WALRCV_ERROR &&
1883 : 0 : missing_ok &&
1884 [ # # ]: 0 : res->sqlstate == ERRCODE_UNDEFINED_OBJECT)
1885 : : {
1886 : : /* LOG. Error, but missing_ok = true. */
1887 [ # # ]: 0 : ereport(LOG,
1888 : : (errmsg("could not drop replication slot \"%s\" on publisher: %s",
1889 : : slotname, res->err)));
1890 : : }
1891 : : else
1892 : : {
1893 : : /* ERROR. */
1894 [ # # ]: 0 : ereport(ERROR,
1895 : : (errcode(ERRCODE_CONNECTION_FAILURE),
1896 : : errmsg("could not drop replication slot \"%s\" on publisher: %s",
1897 : : slotname, res->err)));
1898 : : }
1899 : :
2579 peter_e@gmx.net 1900 :CBC 220 : walrcv_clear_result(res);
1901 : : }
1626 peter@eisentraut.org 1902 :UBC 0 : PG_FINALLY();
1903 : : {
1157 akapila@postgresql.o 1904 :CBC 220 : pfree(cmd.data);
1905 : : }
2594 fujii@postgresql.org 1906 [ - + ]: 220 : PG_END_TRY();
2642 peter_e@gmx.net 1907 : 220 : }
1908 : :
1909 : : /*
1910 : : * Internal workhorse for changing a subscription owner
1911 : : */
1912 : : static void
1913 : 9 : AlterSubscriptionOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
1914 : : {
1915 : : Form_pg_subscription form;
1916 : : AclResult aclresult;
1917 : :
1918 : 9 : form = (Form_pg_subscription) GETSTRUCT(tup);
1919 : :
1920 [ + + ]: 9 : if (form->subowner == newOwnerId)
2642 peter_e@gmx.net 1921 :GBC 2 : return;
1922 : :
518 peter@eisentraut.org 1923 [ - + ]:CBC 7 : if (!object_ownercheck(SubscriptionRelationId, form->oid, GetUserId()))
2325 peter_e@gmx.net 1924 :UBC 0 : aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_SUBSCRIPTION,
2642 1925 : 0 : NameStr(form->subname));
1926 : :
1927 : : /*
1928 : : * Don't allow non-superuser modification of a subscription with
1929 : : * password_required=false.
1930 : : */
381 rhaas@postgresql.org 1931 [ - + - - ]:CBC 7 : if (!form->subpasswordrequired && !superuser())
2642 peter_e@gmx.net 1932 [ # # ]:UBC 0 : ereport(ERROR,
1933 : : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1934 : : errmsg("password_required=false is superuser-only"),
1935 : : errhint("Subscriptions with the password_required option set to false may only be created or modified by the superuser.")));
1936 : :
1937 : : /* Must be able to become new owner */
381 rhaas@postgresql.org 1938 :CBC 7 : check_can_set_role(GetUserId(), newOwnerId);
1939 : :
1940 : : /*
1941 : : * current owner must have CREATE on database
1942 : : *
1943 : : * This is consistent with how ALTER SCHEMA ... OWNER TO works, but some
1944 : : * other object types behave differently (e.g. you can't give a table to a
1945 : : * user who lacks CREATE privileges on a schema).
1946 : : */
1947 : 4 : aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId,
1948 : : GetUserId(), ACL_CREATE);
1949 [ - + ]: 4 : if (aclresult != ACLCHECK_OK)
381 rhaas@postgresql.org 1950 :UBC 0 : aclcheck_error(aclresult, OBJECT_DATABASE,
1951 : 0 : get_database_name(MyDatabaseId));
1952 : :
2642 peter_e@gmx.net 1953 :CBC 4 : form->subowner = newOwnerId;
2630 alvherre@alvh.no-ip. 1954 : 4 : CatalogTupleUpdate(rel, &tup->t_self, tup);
1955 : :
1956 : : /* Update owner dependency reference */
2642 peter_e@gmx.net 1957 : 4 : changeDependencyOnOwner(SubscriptionRelationId,
1958 : : form->oid,
1959 : : newOwnerId);
1960 : :
1961 [ - + ]: 4 : InvokeObjectPostAlterHook(SubscriptionRelationId,
1962 : : form->oid, 0);
1963 : :
1964 : : /* Wake up related background processes to handle this change quickly. */
828 jdavis@postgresql.or 1965 : 4 : ApplyLauncherWakeupAtCommit();
464 tgl@sss.pgh.pa.us 1966 : 4 : LogicalRepWorkersWakeupAtCommit(form->oid);
1967 : : }
1968 : :
1969 : : /*
1970 : : * Change subscription owner -- by name
1971 : : */
1972 : : ObjectAddress
2642 peter_e@gmx.net 1973 : 9 : AlterSubscriptionOwner(const char *name, Oid newOwnerId)
1974 : : {
1975 : : Oid subid;
1976 : : HeapTuple tup;
1977 : : Relation rel;
1978 : : ObjectAddress address;
1979 : : Form_pg_subscription form;
1980 : :
1910 andres@anarazel.de 1981 : 9 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
1982 : :
2642 peter_e@gmx.net 1983 : 9 : tup = SearchSysCacheCopy2(SUBSCRIPTIONNAME, MyDatabaseId,
1984 : : CStringGetDatum(name));
1985 : :
1986 [ - + ]: 9 : if (!HeapTupleIsValid(tup))
2642 peter_e@gmx.net 1987 [ # # ]:UBC 0 : ereport(ERROR,
1988 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
1989 : : errmsg("subscription \"%s\" does not exist", name)));
1990 : :
1972 andres@anarazel.de 1991 :CBC 9 : form = (Form_pg_subscription) GETSTRUCT(tup);
1992 : 9 : subid = form->oid;
1993 : :
2642 peter_e@gmx.net 1994 : 9 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
1995 : :
1996 : 6 : ObjectAddressSet(address, SubscriptionRelationId, subid);
1997 : :
1998 : 6 : heap_freetuple(tup);
1999 : :
1910 andres@anarazel.de 2000 : 6 : table_close(rel, RowExclusiveLock);
2001 : :
2642 peter_e@gmx.net 2002 : 6 : return address;
2003 : : }
2004 : :
2005 : : /*
2006 : : * Change subscription owner -- by OID
2007 : : */
2008 : : void
2642 peter_e@gmx.net 2009 :UBC 0 : AlterSubscriptionOwner_oid(Oid subid, Oid newOwnerId)
2010 : : {
2011 : : HeapTuple tup;
2012 : : Relation rel;
2013 : :
1910 andres@anarazel.de 2014 : 0 : rel = table_open(SubscriptionRelationId, RowExclusiveLock);
2015 : :
2642 peter_e@gmx.net 2016 : 0 : tup = SearchSysCacheCopy1(SUBSCRIPTIONOID, ObjectIdGetDatum(subid));
2017 : :
2018 [ # # ]: 0 : if (!HeapTupleIsValid(tup))
2019 [ # # ]: 0 : ereport(ERROR,
2020 : : (errcode(ERRCODE_UNDEFINED_OBJECT),
2021 : : errmsg("subscription with OID %u does not exist", subid)));
2022 : :
2023 : 0 : AlterSubscriptionOwner_internal(rel, tup, newOwnerId);
2024 : :
2025 : 0 : heap_freetuple(tup);
2026 : :
1910 andres@anarazel.de 2027 : 0 : table_close(rel, RowExclusiveLock);
2642 peter_e@gmx.net 2028 : 0 : }
2029 : :
2030 : : /*
2031 : : * Check and log a warning if the publisher has subscribed to the same table
2032 : : * from some other publisher. This check is required only if "copy_data = true"
2033 : : * and "origin = none" for CREATE SUBSCRIPTION and
2034 : : * ALTER SUBSCRIPTION ... REFRESH statements to notify the user that data
2035 : : * having origin might have been copied.
2036 : : *
2037 : : * This check need not be performed on the tables that are already added
2038 : : * because incremental sync for those tables will happen through WAL and the
2039 : : * origin of the data can be identified from the WAL records.
2040 : : *
2041 : : * subrel_local_oids contains the list of relation oids that are already
2042 : : * present on the subscriber.
2043 : : */
2044 : : static void
584 akapila@postgresql.o 2045 :CBC 128 : check_publications_origin(WalReceiverConn *wrconn, List *publications,
2046 : : bool copydata, char *origin, Oid *subrel_local_oids,
2047 : : int subrel_count, char *subname)
2048 : : {
2049 : : WalRcvExecResult *res;
2050 : : StringInfoData cmd;
2051 : : TupleTableSlot *slot;
2052 : 128 : Oid tableRow[1] = {TEXTOID};
2053 : 128 : List *publist = NIL;
2054 : : int i;
2055 : :
2056 [ + + + - : 245 : if (!copydata || !origin ||
+ + ]
2057 : 117 : (pg_strcasecmp(origin, LOGICALREP_ORIGIN_NONE) != 0))
2058 : 122 : return;
2059 : :
2060 : 6 : initStringInfo(&cmd);
2061 : 6 : appendStringInfoString(&cmd,
2062 : : "SELECT DISTINCT P.pubname AS pubname\n"
2063 : : "FROM pg_publication P,\n"
2064 : : " LATERAL pg_get_publication_tables(P.pubname) GPT\n"
2065 : : " JOIN pg_subscription_rel PS ON (GPT.relid = PS.srrelid),\n"
2066 : : " pg_class C JOIN pg_namespace N ON (N.oid = C.relnamespace)\n"
2067 : : "WHERE C.oid = GPT.relid AND P.pubname IN (");
2068 : 6 : get_publications_str(publications, &cmd, true);
2069 : 6 : appendStringInfoString(&cmd, ")\n");
2070 : :
2071 : : /*
2072 : : * In case of ALTER SUBSCRIPTION ... REFRESH, subrel_local_oids contains
2073 : : * the list of relation oids that are already present on the subscriber.
2074 : : * This check should be skipped for these tables.
2075 : : */
2076 [ + + ]: 9 : for (i = 0; i < subrel_count; i++)
2077 : : {
2078 : 3 : Oid relid = subrel_local_oids[i];
2079 : 3 : char *schemaname = get_namespace_name(get_rel_namespace(relid));
2080 : 3 : char *tablename = get_rel_name(relid);
2081 : :
2082 : 3 : appendStringInfo(&cmd, "AND NOT (N.nspname = '%s' AND C.relname = '%s')\n",
2083 : : schemaname, tablename);
2084 : : }
2085 : :
2086 : 6 : res = walrcv_exec(wrconn, cmd.data, 1, tableRow);
2087 : 6 : pfree(cmd.data);
2088 : :
2089 [ - + ]: 6 : if (res->status != WALRCV_OK_TUPLES)
584 akapila@postgresql.o 2090 [ # # ]:UBC 0 : ereport(ERROR,
2091 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2092 : : errmsg("could not receive list of replicated tables from the publisher: %s",
2093 : : res->err)));
2094 : :
2095 : : /* Process tables. */
584 akapila@postgresql.o 2096 :CBC 6 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
2097 [ + + ]: 8 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
2098 : : {
2099 : : char *pubname;
2100 : : bool isnull;
2101 : :
2102 : 2 : pubname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
2103 [ - + ]: 2 : Assert(!isnull);
2104 : :
2105 : 2 : ExecClearTuple(slot);
2106 : 2 : publist = list_append_unique(publist, makeString(pubname));
2107 : : }
2108 : :
2109 : : /*
2110 : : * Log a warning if the publisher has subscribed to the same table from
2111 : : * some other publisher. We cannot know the origin of data during the
2112 : : * initial sync. Data origins can be found only from the WAL by looking at
2113 : : * the origin id.
2114 : : *
2115 : : * XXX: For simplicity, we don't check whether the table has any data or
2116 : : * not. If the table doesn't have any data then we don't need to
2117 : : * distinguish between data having origin and data not having origin so we
2118 : : * can avoid logging a warning in that case.
2119 : : */
2120 [ + + ]: 6 : if (publist)
2121 : : {
2122 : 2 : StringInfo pubnames = makeStringInfo();
2123 : :
2124 : : /* Prepare the list of publication(s) for warning message. */
2125 : 2 : get_publications_str(publist, pubnames, false);
2126 [ + - ]: 2 : ereport(WARNING,
2127 : : errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
2128 : : errmsg("subscription \"%s\" requested copy_data with origin = NONE but might copy data that had a different origin",
2129 : : subname),
2130 : : errdetail_plural("The subscription being created subscribes to a publication (%s) that contains tables that are written to by other subscriptions.",
2131 : : "The subscription being created subscribes to publications (%s) that contain tables that are written to by other subscriptions.",
2132 : : list_length(publist), pubnames->data),
2133 : : errhint("Verify that initial data copied from the publisher tables did not come from other origins."));
2134 : : }
2135 : :
2136 : 6 : ExecDropSingleTupleTableSlot(slot);
2137 : :
2138 : 6 : walrcv_clear_result(res);
2139 : : }
2140 : :
2141 : : /*
2142 : : * Get the list of tables which belong to specified publications on the
2143 : : * publisher connection.
2144 : : *
2145 : : * Note that we don't support the case where the column list is different for
2146 : : * the same table in different publications to avoid sending unwanted column
2147 : : * information for some of the rows. This can happen when both the column
2148 : : * list and row filter are specified for different publications.
2149 : : */
2150 : : static List *
2579 peter_e@gmx.net 2151 : 128 : fetch_table_list(WalReceiverConn *wrconn, List *publications)
2152 : : {
2153 : : WalRcvExecResult *res;
2154 : : StringInfoData cmd;
2155 : : TupleTableSlot *slot;
382 akapila@postgresql.o 2156 : 128 : Oid tableRow[3] = {TEXTOID, TEXTOID, InvalidOid};
2524 bruce@momjian.us 2157 : 128 : List *tablelist = NIL;
382 akapila@postgresql.o 2158 : 128 : int server_version = walrcv_server_version(wrconn);
2159 : 128 : bool check_columnlist = (server_version >= 150000);
2160 : :
2579 peter_e@gmx.net 2161 : 128 : initStringInfo(&cmd);
2162 : :
2163 : : /* Get the list of tables from the publisher. */
382 akapila@postgresql.o 2164 [ + - ]: 128 : if (server_version >= 160000)
2165 : : {
2166 : : StringInfoData pub_names;
2167 : :
2168 : 128 : tableRow[2] = INT2VECTOROID;
2169 : 128 : initStringInfo(&pub_names);
2170 : 128 : get_publications_str(publications, &pub_names, true);
2171 : :
2172 : : /*
2173 : : * From version 16, we allowed passing multiple publications to the
2174 : : * function pg_get_publication_tables. This helped to filter out the
2175 : : * partition table whose ancestor is also published in this
2176 : : * publication array.
2177 : : *
2178 : : * Join pg_get_publication_tables with pg_publication to exclude
2179 : : * non-existing publications.
2180 : : *
2181 : : * Note that attrs are always stored in sorted order so we don't need
2182 : : * to worry if different publications have specified them in a
2183 : : * different order. See publication_translate_columns.
2184 : : */
2185 : 128 : appendStringInfo(&cmd, "SELECT DISTINCT n.nspname, c.relname, gpt.attrs\n"
2186 : : " FROM pg_class c\n"
2187 : : " JOIN pg_namespace n ON n.oid = c.relnamespace\n"
2188 : : " JOIN ( SELECT (pg_get_publication_tables(VARIADIC array_agg(pubname::text))).*\n"
2189 : : " FROM pg_publication\n"
2190 : : " WHERE pubname IN ( %s )) AS gpt\n"
2191 : : " ON gpt.relid = c.oid\n",
2192 : : pub_names.data);
2193 : :
2194 : 128 : pfree(pub_names.data);
2195 : : }
2196 : : else
2197 : : {
382 akapila@postgresql.o 2198 :UBC 0 : tableRow[2] = NAMEARRAYOID;
2199 : 0 : appendStringInfoString(&cmd, "SELECT DISTINCT t.schemaname, t.tablename \n");
2200 : :
2201 : : /* Get column lists for each relation if the publisher supports it */
2202 [ # # ]: 0 : if (check_columnlist)
2203 : 0 : appendStringInfoString(&cmd, ", t.attnames\n");
2204 : :
2205 : 0 : appendStringInfoString(&cmd, "FROM pg_catalog.pg_publication_tables t\n"
2206 : : " WHERE t.pubname IN (");
2207 : 0 : get_publications_str(publications, &cmd, true);
2208 : 0 : appendStringInfoChar(&cmd, ')');
2209 : : }
2210 : :
682 akapila@postgresql.o 2211 [ + - ]:CBC 128 : res = walrcv_exec(wrconn, cmd.data, check_columnlist ? 3 : 2, tableRow);
2579 peter_e@gmx.net 2212 : 128 : pfree(cmd.data);
2213 : :
2214 [ - + ]: 128 : if (res->status != WALRCV_OK_TUPLES)
2579 peter_e@gmx.net 2215 [ # # ]:UBC 0 : ereport(ERROR,
2216 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2217 : : errmsg("could not receive list of replicated tables from the publisher: %s",
2218 : : res->err)));
2219 : :
2220 : : /* Process tables. */
1977 andres@anarazel.de 2221 :CBC 128 : slot = MakeSingleTupleTableSlot(res->tupledesc, &TTSOpsMinimalTuple);
2579 peter_e@gmx.net 2222 [ + + ]: 365 : while (tuplestore_gettupleslot(res->tuplestore, true, false, slot))
2223 : : {
2224 : : char *nspname;
2225 : : char *relname;
2226 : : bool isnull;
2227 : : RangeVar *rv;
2228 : :
2229 : 238 : nspname = TextDatumGetCString(slot_getattr(slot, 1, &isnull));
2230 [ - + ]: 238 : Assert(!isnull);
2231 : 238 : relname = TextDatumGetCString(slot_getattr(slot, 2, &isnull));
2232 [ - + ]: 238 : Assert(!isnull);
2233 : :
1184 akapila@postgresql.o 2234 : 238 : rv = makeRangeVar(nspname, relname, -1);
2235 : :
682 2236 [ + - + + ]: 238 : if (check_columnlist && list_member(tablelist, rv))
2237 [ + - ]: 1 : ereport(ERROR,
2238 : : errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2239 : : errmsg("cannot use different column lists for table \"%s.%s\" in different publications",
2240 : : nspname, relname));
2241 : : else
2242 : 237 : tablelist = lappend(tablelist, rv);
2243 : :
2579 peter_e@gmx.net 2244 : 237 : ExecClearTuple(slot);
2245 : : }
2246 : 127 : ExecDropSingleTupleTableSlot(slot);
2247 : :
2248 : 127 : walrcv_clear_result(res);
2249 : :
2250 : 127 : return tablelist;
2251 : : }
2252 : :
2253 : : /*
2254 : : * This is to report the connection failure while dropping replication slots.
2255 : : * Here, we report the WARNING for all tablesync slots so that user can drop
2256 : : * them manually, if required.
2257 : : */
2258 : : static void
1157 akapila@postgresql.o 2259 :UBC 0 : ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err)
2260 : : {
2261 : : ListCell *lc;
2262 : :
2263 [ # # # # : 0 : foreach(lc, rstates)
# # ]
2264 : : {
2265 : 0 : SubscriptionRelState *rstate = (SubscriptionRelState *) lfirst(lc);
2266 : 0 : Oid relid = rstate->relid;
2267 : :
2268 : : /* Only cleanup resources of tablesync workers */
2269 [ # # ]: 0 : if (!OidIsValid(relid))
2270 : 0 : continue;
2271 : :
2272 : : /*
2273 : : * Caller needs to ensure that relstate doesn't change underneath us.
2274 : : * See DropSubscription where we get the relstates.
2275 : : */
2276 [ # # ]: 0 : if (rstate->state != SUBREL_STATE_SYNCDONE)
2277 : : {
2278 : 0 : char syncslotname[NAMEDATALEN] = {0};
2279 : :
1154 2280 : 0 : ReplicationSlotNameForTablesync(subid, relid, syncslotname,
2281 : : sizeof(syncslotname));
1157 2282 [ # # ]: 0 : elog(WARNING, "could not drop tablesync replication slot \"%s\"",
2283 : : syncslotname);
2284 : : }
2285 : : }
2286 : :
2287 [ # # ]: 0 : ereport(ERROR,
2288 : : (errcode(ERRCODE_CONNECTION_FAILURE),
2289 : : errmsg("could not connect to publisher when attempting to drop replication slot \"%s\": %s",
2290 : : slotname, err),
2291 : : /* translator: %s is an SQL ALTER command */
2292 : : errhint("Use %s to disable the subscription, and then use %s to disassociate it from the slot.",
2293 : : "ALTER SUBSCRIPTION ... DISABLE",
2294 : : "ALTER SUBSCRIPTION ... SET (slot_name = NONE)")));
2295 : : }
2296 : :
2297 : : /*
2298 : : * Check for duplicates in the given list of publications and error out if
2299 : : * found one. Add publications to datums as text datums, if datums is not
2300 : : * NULL.
2301 : : */
2302 : : static void
1104 peter@eisentraut.org 2303 :CBC 195 : check_duplicates_in_publist(List *publist, Datum *datums)
2304 : : {
2305 : : ListCell *cell;
2306 : 195 : int j = 0;
2307 : :
2308 [ + - + + : 451 : foreach(cell, publist)
+ + ]
2309 : : {
2310 : 265 : char *name = strVal(lfirst(cell));
2311 : : ListCell *pcell;
2312 : :
2313 [ + - + - : 401 : foreach(pcell, publist)
+ - ]
2314 : : {
2315 : 401 : char *pname = strVal(lfirst(pcell));
2316 : :
2317 [ + + ]: 401 : if (pcell == cell)
2318 : 256 : break;
2319 : :
2320 [ + + ]: 145 : if (strcmp(name, pname) == 0)
2321 [ + - ]: 9 : ereport(ERROR,
2322 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
2323 : : errmsg("publication name \"%s\" used more than once",
2324 : : pname)));
2325 : : }
2326 : :
2327 [ + + ]: 256 : if (datums)
2328 : 213 : datums[j++] = CStringGetTextDatum(name);
2329 : : }
2330 : 186 : }
2331 : :
2332 : : /*
2333 : : * Merge current subscription's publications and user-specified publications
2334 : : * from ADD/DROP PUBLICATIONS.
2335 : : *
2336 : : * If addpub is true, we will add the list of publications into oldpublist.
2337 : : * Otherwise, we will delete the list of publications from oldpublist. The
2338 : : * returned list is a copy, oldpublist itself is not changed.
2339 : : *
2340 : : * subname is the subscription name, for error messages.
2341 : : */
2342 : : static List *
2343 : 27 : merge_publications(List *oldpublist, List *newpublist, bool addpub, const char *subname)
2344 : : {
2345 : : ListCell *lc;
2346 : :
2347 : 27 : oldpublist = list_copy(oldpublist);
2348 : :
2349 : 27 : check_duplicates_in_publist(newpublist, NULL);
2350 : :
2351 [ + - + + : 46 : foreach(lc, newpublist)
+ + ]
2352 : : {
2353 : 34 : char *name = strVal(lfirst(lc));
2354 : : ListCell *lc2;
2355 : 34 : bool found = false;
2356 : :
2357 [ + - + + : 67 : foreach(lc2, oldpublist)
+ + ]
2358 : : {
2359 : 55 : char *pubname = strVal(lfirst(lc2));
2360 : :
2361 [ + + ]: 55 : if (strcmp(name, pubname) == 0)
2362 : : {
2363 : 22 : found = true;
2364 [ + + ]: 22 : if (addpub)
2365 [ + - ]: 6 : ereport(ERROR,
2366 : : (errcode(ERRCODE_DUPLICATE_OBJECT),
2367 : : errmsg("publication \"%s\" is already in subscription \"%s\"",
2368 : : name, subname)));
2369 : : else
2370 : 16 : oldpublist = foreach_delete_current(oldpublist, lc2);
2371 : :
2372 : 16 : break;
2373 : : }
2374 : : }
2375 : :
2376 [ + + + - ]: 28 : if (addpub && !found)
2377 : 9 : oldpublist = lappend(oldpublist, makeString(name));
2378 [ + - + + ]: 19 : else if (!addpub && !found)
2379 [ + - ]: 3 : ereport(ERROR,
2380 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2381 : : errmsg("publication \"%s\" is not in subscription \"%s\"",
2382 : : name, subname)));
2383 : : }
2384 : :
2385 : : /*
2386 : : * XXX Probably no strong reason for this, but for now it's to make ALTER
2387 : : * SUBSCRIPTION ... DROP PUBLICATION consistent with SET PUBLICATION.
2388 : : */
2389 [ + + ]: 12 : if (!oldpublist)
2390 [ + - ]: 3 : ereport(ERROR,
2391 : : (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
2392 : : errmsg("cannot drop all the publications from a subscription")));
2393 : :
2394 : 9 : return oldpublist;
2395 : : }
2396 : :
2397 : : /*
2398 : : * Extract the streaming mode value from a DefElem. This is like
2399 : : * defGetBoolean() but also accepts the special value of "parallel".
2400 : : */
2401 : : char
461 akapila@postgresql.o 2402 : 64 : defGetStreamingMode(DefElem *def)
2403 : : {
2404 : : /*
2405 : : * If no parameter value given, assume "true" is meant.
2406 : : */
2407 [ - + ]: 64 : if (!def->arg)
461 akapila@postgresql.o 2408 :UBC 0 : return LOGICALREP_STREAM_ON;
2409 : :
2410 : : /*
2411 : : * Allow 0, 1, "false", "true", "off", "on" or "parallel".
2412 : : */
461 akapila@postgresql.o 2413 [ - + ]:CBC 64 : switch (nodeTag(def->arg))
2414 : : {
461 akapila@postgresql.o 2415 :UBC 0 : case T_Integer:
2416 [ # # # ]: 0 : switch (intVal(def->arg))
2417 : : {
2418 : 0 : case 0:
2419 : 0 : return LOGICALREP_STREAM_OFF;
2420 : 0 : case 1:
2421 : 0 : return LOGICALREP_STREAM_ON;
2422 : 0 : default:
2423 : : /* otherwise, error out below */
2424 : 0 : break;
2425 : : }
2426 : 0 : break;
461 akapila@postgresql.o 2427 :CBC 64 : default:
2428 : : {
2429 : 64 : char *sval = defGetString(def);
2430 : :
2431 : : /*
2432 : : * The set of strings accepted here should match up with the
2433 : : * grammar's opt_boolean_or_string production.
2434 : : */
2435 [ + + - + ]: 125 : if (pg_strcasecmp(sval, "false") == 0 ||
2436 : 61 : pg_strcasecmp(sval, "off") == 0)
2437 : 3 : return LOGICALREP_STREAM_OFF;
2438 [ + + + + ]: 113 : if (pg_strcasecmp(sval, "true") == 0 ||
2439 : 52 : pg_strcasecmp(sval, "on") == 0)
2440 : 44 : return LOGICALREP_STREAM_ON;
2441 [ + + ]: 17 : if (pg_strcasecmp(sval, "parallel") == 0)
2442 : 14 : return LOGICALREP_STREAM_PARALLEL;
2443 : : }
2444 : 3 : break;
2445 : : }
2446 : :
2447 [ + - ]: 3 : ereport(ERROR,
2448 : : (errcode(ERRCODE_SYNTAX_ERROR),
2449 : : errmsg("%s requires a Boolean value or \"parallel\"",
2450 : : def->defname)));
2451 : : return LOGICALREP_STREAM_OFF; /* keep compiler quiet */
2452 : : }
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