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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
Download Patch File Download Diff File Expand all files Collapse all files

20
src/backend/replication/walreceiver.c
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@@ -196,6 +196,7 @@ WalReceiverMain(void)
WalRcvData *walrcv = WalRcv;
TimestampTz last_recv_timestamp;
bool ping_sent;
char *err;
/*
* WalRcv should be set up already (if we are a backend, we inherit this
@@ -293,7 +294,10 @@ WalReceiverMain(void)
/* Establish the connection to the primary for XLOG streaming */
EnableWalRcvImmediateExit();
wrconn = walrcv_connect(conninfo, false, "walreceiver");
wrconn = walrcv_connect(conninfo, false, "walreceiver", &err);
if (!wrconn)
ereport(ERROR,
(errmsg("could not connect to the primary server: %s", err)));
DisableWalRcvImmediateExit();
/*
@@ -316,13 +320,16 @@ WalReceiverMain(void)
{
char *primary_sysid;
char standby_sysid[32];
int server_version;
WalRcvStreamOptions options;
/*
* Check that we're connected to a valid server using the
* IDENTIFY_SYSTEM replication command,
* IDENTIFY_SYSTEM replication command.
*/
EnableWalRcvImmediateExit();
primary_sysid = walrcv_identify_system(wrconn, &primaryTLI);
primary_sysid = walrcv_identify_system(wrconn, &primaryTLI,
&server_version);
snprintf(standby_sysid, sizeof(standby_sysid), UINT64_FORMAT,
GetSystemIdentifier());
@@ -368,9 +375,12 @@ WalReceiverMain(void)
* history file, bump recovery target timeline, and ask us to restart
* on the new timeline.
*/
options.logical = false;
options.startpoint = startpoint;
options.slotname = slotname[0] != '\0' ? slotname : NULL;
options.proto.physical.startpointTLI = startpointTLI;
ThisTimeLineID = startpointTLI;
if (walrcv_startstreaming(wrconn, startpointTLI, startpoint,
slotname[0] != '\0' ? slotname : NULL))
if (walrcv_startstreaming(wrconn, &options))
{
if (first_stream)
ereport(LOG,