Apply log should be pg_xlog_receive_location() - pg_xlog_replay_location().

Also remove get_last_xlog_replay_timestamp() function and the sql_utils dir,
we can readded later if we need.
We don't need the column last_wal_standby_timestamp in repl_status, so
remove it

INSTALL

@@ -5,19 +5,13 @@ This module is for monitor a cluster, to install follow next steps
 
 On Primary:
 
-1) Install last_xlog_replay_timestamp() function
-2) Create tables for repmgr configuration and monitor (see repmgr.sql)
-3) Edit repmgr.conf 
+1) Create tables for repmgr configuration and monitor (see repmgr.sql)
+2) Edit repmgr.conf 
 
 On Standby:
 
-1) Install xlog_replay_time module 
-   NOTE: this should be done before the standby starts for the first time, 
-         the reason is that when the standby tries to replay WAL segment
-         where the function was created this file should exist or it will
-         be an error.
-2) Start replica
-3) Edit repmgr.conf 
+1) Start replica
+2) Edit repmgr.conf 
 
 
 
@@ -28,11 +22,6 @@ make USE_PGXS=1
 make install USE_PGXS=1
 
 
-Installing last_xlog_replay_timestamp() function
--------------------------------------------------
-psql -f $PGDIR/share/contrib/xlog_replay_time.sql
-
-
 repmgr.conf
 ------------
 

main.c

@@ -195,7 +195,6 @@ MonitorExecute(void)
 	char last_wal_primary_location[MAXLEN];
 	char last_wal_standby_received[MAXLEN];
 	char last_wal_standby_applied[MAXLEN];
-	char last_wal_standby_timestamp[MAXLEN];
 
 	unsigned long long int lsn_primary;
 	unsigned long long int lsn_standby_received;
@@ -204,7 +203,7 @@ MonitorExecute(void)
 	/* Get local xlog info */
     sprintf(sqlquery,
             "SELECT CURRENT_TIMESTAMP, pg_last_xlog_receive_location(), "
-                  "pg_last_xlog_replay_location(), get_last_xlog_replay_timestamp()");
+                   "pg_last_xlog_replay_location()");
 
     res = PQexec(myLocalConn, sqlquery);
     if (PQresultStatus(res) != PGRES_TUPLES_OK)
@@ -217,7 +216,6 @@ MonitorExecute(void)
     strcpy(monitor_standby_timestamp, PQgetvalue(res, 0, 0));
     strcpy(last_wal_standby_received , PQgetvalue(res, 0, 1));
     strcpy(last_wal_standby_applied , PQgetvalue(res, 0, 2));
-    strcpy(last_wal_standby_timestamp, PQgetvalue(res, 0, 3));
     PQclear(res);
 
 	/* Get primary xlog info */
@@ -246,13 +244,12 @@ MonitorExecute(void)
 				"INSERT INTO repl_status "
 				"VALUES(%d, %d, '%s'::timestamp with time zone, "
                       " '%s', '%s', "
-					  " '%s'::timestamp with time zone, "
 					  " %lld, %lld)",
                 primaryId, myLocalId, monitor_standby_timestamp, 
 				last_wal_primary_location, 
-				last_wal_standby_received, last_wal_standby_timestamp, 
+				last_wal_standby_received, 
 				(lsn_primary - lsn_standby_received),
-				(lsn_standby_applied - lsn_standby_received));
+				(lsn_standby_received - lsn_standby_applied));
 
 	/*
 	 * Execute the query asynchronously, but don't check for a result. We

repmgr.sql

@@ -12,7 +12,6 @@ CREATE TABLE repl_status(
   last_monitor_timestamp    	 TIMESTAMP WITH TIME ZONE NOT NULL,
   last_wal_primary_location      TEXT NOT NULL,
   last_wal_standby_location      TEXT NOT NULL,
-  last_wal_standby_timestamp	 TIMESTAMP WITH TIME ZONE NOT NULL,
   replication_lag                BIGINT NOT NULL,
   apply_lag                      BIGINT NOT NULL
 );

sql_utils/Makefile

@@ -1,19 +0,0 @@
-#
-# Makefile
-# Copyright (c) 2ndQuadrant, 2010
-#
-
-MODULE_big = repmgr_wrapper_funcs
-DATA_built=repmgr_wrapper_funcs.sql
-DATA=uninstall_repmgr_wrapper_funcs.sql
-OBJS=repmgr_wrapper_funcs.o
-
-ifdef USE_PGXS
-PGXS := $(shell pg_config --pgxs)
-include $(PGXS)
-else
-subdir = contrib/repmgr/sql_utils
-top_builddir = ../../..
-include $(top_builddir)/src/Makefile.global
-include $(top_srcdir)/contrib/contrib-global.mk
-endif

sql_utils/repmgr_wrapper_funcs.c

@@ -1,31 +0,0 @@
-/*
- * repmgr_wrapper_funcs.c
- * Copyright (c) 2ndQuadrant, 2010
- *
- * Expose some backend functions in SQL
- */
-
-#include "postgres.h"
-#include "fmgr.h"
-#include "access/xlog.h"
-
-PG_MODULE_MAGIC;
-
-Datum last_xlog_replay_timestamp(PG_FUNCTION_ARGS);
-
-PG_FUNCTION_INFO_V1(last_xlog_replay_timestamp);
-
-Datum
-last_xlog_replay_timestamp(PG_FUNCTION_ARGS)
-{
-TimestampTz rTime;
-bool        fromStream;
-
-	if (!RecoveryInProgress())
-		PG_RETURN_NULL();
-	else
-	{
-		GetXLogReceiptTime(&rTime, &fromStream);
-	    PG_RETURN_TIMESTAMPTZ(rTime);
-	}
-}

sql_utils/repmgr_wrapper_funcs.sql.in

@@ -1,9 +0,0 @@
-/*
- * repmgr_wrapper_function.sql
- * Copyright (c) 2ndQuadrant, 2010
- *
- */
-
-CREATE FUNCTION get_last_xlog_replay_timestamp() RETURNS timestamp with time zone 
-AS 'MODULE_PATHNAME', 'last_xlog_replay_timestamp' 
-LANGUAGE C STRICT;

sql_utils/uninstall_repmgr_wrapper_funcs.sql

@@ -1 +0,0 @@
-DROP FUNCTION get_last_xlog_replay_timestamp();