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Logical replication

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- Add PUBLICATION catalogs and DDL
- Add SUBSCRIPTION catalog and DDL
- Define logical replication protocol and output plugin
- Add logical replication workers

From: Petr Jelinek <petr@2ndquadrant.com>
Reviewed-by: Steve Singer <steve@ssinger.info>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Erik Rijkers <er@xs4all.nl>
Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
This commit is contained in:
Peter Eisentraut
2017-01-19 12:00:00 -05:00
parent ba61a04bc7
commit 665d1fad99
119 changed files with 13354 additions and 95 deletions
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23
src/backend/postmaster/bgworker.c
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@@ -20,6 +20,7 @@
#include "port/atomics.h"
#include "postmaster/bgworker_internals.h"
#include "postmaster/postmaster.h"
#include "replication/logicallauncher.h"
#include "storage/dsm.h"
#include "storage/ipc.h"
#include "storage/latch.h"
@@ -107,6 +108,15 @@ struct BackgroundWorkerHandle
static BackgroundWorkerArray *BackgroundWorkerData;
/*
* List of workers that are allowed to be started outside of
* shared_preload_libraries.
*/
static const bgworker_main_type InternalBGWorkers[] = {
ApplyLauncherMain,
NULL
};
/*
* Calculate shared memory needed.
*/
@@ -761,12 +771,23 @@ RegisterBackgroundWorker(BackgroundWorker *worker)
{
RegisteredBgWorker *rw;
static int numworkers = 0;
bool internal = false;
int i;
if (!IsUnderPostmaster)
ereport(DEBUG1,
(errmsg("registering background worker \"%s\"", worker->bgw_name)));
if (!process_shared_preload_libraries_in_progress)
for (i = 0; InternalBGWorkers[i]; i++)
{
if (worker->bgw_main == InternalBGWorkers[i])
{
internal = true;
break;
}
}
if (!process_shared_preload_libraries_in_progress && !internal)
{
if (!IsUnderPostmaster)
ereport(LOG,

6
src/backend/postmaster/pgstat.c
View File

@@ -3303,6 +3303,12 @@ pgstat_get_wait_activity(WaitEventActivity w)
case WAIT_EVENT_WAL_WRITER_MAIN:
event_name = "WalWriterMain";
break;
case WAIT_EVENT_LOGICAL_LAUNCHER_MAIN:
event_name = "LogicalLauncherMain";
break;
case WAIT_EVENT_LOGICAL_APPLY_MAIN:
event_name = "LogicalApplyMain";
break;
/* no default case, so that compiler will warn */
}

9
src/backend/postmaster/postmaster.c
View File

@@ -113,6 +113,7 @@
#include "postmaster/pgarch.h"
#include "postmaster/postmaster.h"
#include "postmaster/syslogger.h"
#include "replication/logicallauncher.h"
#include "replication/walsender.h"
#include "storage/fd.h"
#include "storage/ipc.h"
@@ -941,6 +942,14 @@ PostmasterMain(int argc, char *argv[])
}
#endif
/*
* Register the apply launcher. Since it registers a background worker,
* it needs to be called before InitializeMaxBackends(), and it's probably
* a good idea to call it before any modules had chance to take the
* background worker slots.
*/
ApplyLauncherRegister();
/*
* process any libraries that should be preloaded at postmaster start
*/