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Add decoding of sequences to built-in replication

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This commit adds support for decoding of sequences to the built-in
replication (the infrastructure was added by commit 0da92dc530).

The syntax and behavior mostly mimics handling of tables, i.e. a
publication may be defined as FOR ALL SEQUENCES (replicating all
sequences in a database), FOR ALL SEQUENCES IN SCHEMA (replicating
all sequences in a particular schema) or individual sequences.

To publish sequence modifications, the publication has to include
'sequence' action. The protocol is extended with a new message,
describing sequence increments.

A new system view pg_publication_sequences lists all the sequences
added to a publication, both directly and indirectly. Various psql
commands (\d and \dRp) are improved to also display publications
including a given sequence, or sequences included in a publication.

Author: Tomas Vondra, Cary Huang
Reviewed-by: Peter Eisentraut, Amit Kapila, Hannu Krosing, Andres
             Freund, Petr Jelinek
Discussion: https://postgr.es/m/d045f3c2-6cfb-06d3-5540-e63c320df8bc@enterprisedb.com
Discussion: https://postgr.es/m/1710ed7e13b.cd7177461430746.3372264562543607781@highgo.ca
This commit is contained in:
Tomas Vondra
2022-03-24 18:20:21 +01:00
parent 0adb3dc68b
commit 75b1521dae
40 changed files with 3236 additions and 469 deletions
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27
src/backend/commands/tablecmds.c
View File

@ -42,6 +42,7 @@
#include "catalog/pg_inherits.h"
#include "catalog/pg_namespace.h"
#include "catalog/pg_opclass.h"
#include "catalog/pg_publication_namespace.h"
#include "catalog/pg_statistic_ext.h"
#include "catalog/pg_tablespace.h"
#include "catalog/pg_trigger.h"
@ -16381,11 +16382,14 @@ AlterTableNamespace(AlterObjectSchemaStmt *stmt, Oid *oldschema)
* Check that setting the relation to a different schema won't result in a
* publication having both a schema and the same schema's table, as this
* is not supported.
*
* XXX We do this for tables and sequences, but it's better to keep the two
* blocks separate, to make the strings easier to translate.
*/
if (stmt->objectType == OBJECT_TABLE)
{
ListCell *lc;
List *schemaPubids = GetSchemaPublications(nspOid);
List *schemaPubids = GetSchemaPublications(nspOid, PUB_OBJTYPE_TABLE);
List *relPubids = GetRelationPublications(RelationGetRelid(rel));
foreach(lc, relPubids)
@ -16403,6 +16407,27 @@ AlterTableNamespace(AlterObjectSchemaStmt *stmt, Oid *oldschema)
get_publication_name(pubid, false)));
}
}
else if (stmt->objectType == OBJECT_SEQUENCE)
{
ListCell *lc;
List *schemaPubids = GetSchemaPublications(nspOid, PUB_OBJTYPE_SEQUENCE);
List *relPubids = GetRelationPublications(RelationGetRelid(rel));
foreach(lc, relPubids)
{
Oid pubid = lfirst_oid(lc);
if (list_member_oid(schemaPubids, pubid))
ereport(ERROR,
errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot move sequence \"%s\" to schema \"%s\"",
RelationGetRelationName(rel), stmt->newschema),
errdetail("The schema \"%s\" and same schema's sequence \"%s\" cannot be part of the same publication \"%s\".",
stmt->newschema,
RelationGetRelationName(rel),
get_publication_name(pubid, false)));
}
}
/* common checks on switching namespaces */
CheckSetNamespace(oldNspOid, nspOid);