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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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62
src/include/replication/worker_internal.h Normal file
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/*-------------------------------------------------------------------------
*
* worker_internal.h
* Internal headers shared by logical replication workers.
*
* Portions Copyright (c) 2010-2016, PostgreSQL Global Development Group
*
* src/include/replication/worker_internal.h
*
*-------------------------------------------------------------------------
*/
#ifndef WORKER_INTERNAL_H
#define WORKER_INTERNAL_H
#include "catalog/pg_subscription.h"
#include "storage/lock.h"
typedef struct LogicalRepWorker
{
/* Pointer to proc array. NULL if not running. */
PGPROC *proc;
/* Database id to connect to. */
Oid dbid;
/* User to use for connection (will be same as owner of subscription). */
Oid userid;
/* Subscription id for the worker. */
Oid subid;
/* Used for initial table synchronization. */
Oid relid;
/* Stats. */
XLogRecPtr last_lsn;
TimestampTz last_send_time;
TimestampTz last_recv_time;
XLogRecPtr reply_lsn;
TimestampTz reply_time;
} LogicalRepWorker;
/* libpqreceiver connection */
extern struct WalReceiverConn *wrconn;
/* Worker and subscription objects. */
extern Subscription *MySubscription;
extern LogicalRepWorker *MyLogicalRepWorker;
extern bool in_remote_transaction;
extern bool got_SIGTERM;
extern void logicalrep_worker_attach(int slot);
extern LogicalRepWorker *logicalrep_worker_find(Oid subid);
extern int logicalrep_worker_count(Oid subid);
extern void logicalrep_worker_launch(Oid dbid, Oid subid, const char *subname, Oid userid);
extern void logicalrep_worker_stop(Oid subid);
extern void logicalrep_worker_wakeup(Oid subid);
extern void logicalrep_worker_sigterm(SIGNAL_ARGS);
#endif /* WORKER_INTERNAL_H */