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Logical replication support for TRUNCATE

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Update the built-in logical replication system to make use of the
previously added logical decoding for TRUNCATE support.  Add the
required truncate callback to pgoutput and a new logical replication
protocol message.

Publications get a new attribute to determine whether to replicate
truncate actions.  When updating a publication via pg_dump from an older
version, this is not set, thus preserving the previous behavior.

Author: Simon Riggs <simon@2ndquadrant.com>
Author: Marco Nenciarini <marco.nenciarini@2ndquadrant.it>
Author: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Reviewed-by: Petr Jelinek <petr.jelinek@2ndquadrant.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
This commit is contained in:
Peter Eisentraut
2018-04-07 11:24:53 -04:00
parent 5dfd1e5a66
commit 039eb6e92f
19 changed files with 572 additions and 111 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/backend/commands/publicationcmds.c
View File

@ -62,7 +62,8 @@ parse_publication_options(List *options,
bool *publish_given,
bool *publish_insert,
bool *publish_update,
bool *publish_delete)
bool *publish_delete,
bool *publish_truncate)
{
ListCell *lc;
@ -72,6 +73,7 @@ parse_publication_options(List *options,
*publish_insert = true;
*publish_update = true;
*publish_delete = true;
*publish_truncate = true;
/* Parse options */
foreach(lc, options)
@ -96,6 +98,7 @@ parse_publication_options(List *options,
*publish_insert = false;
*publish_update = false;
*publish_delete = false;
*publish_truncate = false;
*publish_given = true;
publish = defGetString(defel);
@ -116,6 +119,8 @@ parse_publication_options(List *options,
*publish_update = true;
else if (strcmp(publish_opt, "delete") == 0)
*publish_delete = true;
else if (strcmp(publish_opt, "truncate") == 0)
*publish_truncate = true;
else
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
@ -145,6 +150,7 @@ CreatePublication(CreatePublicationStmt *stmt)
bool publish_insert;
bool publish_update;
bool publish_delete;
bool publish_truncate;
AclResult aclresult;
/* must have CREATE privilege on database */
@ -181,7 +187,8 @@ CreatePublication(CreatePublicationStmt *stmt)
parse_publication_options(stmt->options,
&publish_given, &publish_insert,
&publish_update, &publish_delete);
&publish_update, &publish_delete,
&publish_truncate);
values[Anum_pg_publication_puballtables - 1] =
BoolGetDatum(stmt->for_all_tables);
@ -191,6 +198,8 @@ CreatePublication(CreatePublicationStmt *stmt)
BoolGetDatum(publish_update);
values[Anum_pg_publication_pubdelete - 1] =
BoolGetDatum(publish_delete);
values[Anum_pg_publication_pubtruncate - 1] =
BoolGetDatum(publish_truncate);
tup = heap_form_tuple(RelationGetDescr(rel), values, nulls);
@ -237,11 +246,13 @@ AlterPublicationOptions(AlterPublicationStmt *stmt, Relation rel,
bool publish_insert;
bool publish_update;
bool publish_delete;
bool publish_truncate;
ObjectAddress obj;
parse_publication_options(stmt->options,
&publish_given, &publish_insert,
&publish_update, &publish_delete);
&publish_update, &publish_delete,
&publish_truncate);
/* Everything ok, form a new tuple. */
memset(values, 0, sizeof(values));
@ -258,6 +269,9 @@ AlterPublicationOptions(AlterPublicationStmt *stmt, Relation rel,
values[Anum_pg_publication_pubdelete - 1] = BoolGetDatum(publish_delete);
replaces[Anum_pg_publication_pubdelete - 1] = true;
values[Anum_pg_publication_pubtruncate - 1] = BoolGetDatum(publish_truncate);
replaces[Anum_pg_publication_pubtruncate - 1] = true;
}
tup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls,