need to provide the follow target node record for node follow internal

otherwise fails when using a dedicated replication user.

WIP.

.github/workflows/sonarqube-scan.yml

@@ -0,0 +1,37 @@
+name: SonarQube Scan
+on:
+  pull_request:
+  push:
+    branches: [ master ]
+  workflow_dispatch:  
+jobs:
+  sonarQube:
+    name: SonarQube-Job
+    runs-on: ubuntu-latest
+    steps:
+    
+      - name: Checkout source repo
+        uses: actions/checkout@v1
+        with:
+          ref: '${{ github.head_ref }}'
+    
+      - name: Checkout GitHub Action Repo
+        uses: actions/checkout@master
+        with:
+          repository: EnterpriseDB/edb-github-actions.git
+          ref: master
+          token: ${{ secrets.GH_SLONIK }}
+          path: .github/actions/edb-github-actions
+          
+      - name: SonarQube Scan
+        uses: ./.github/actions/edb-github-actions/sonarqube
+        with:
+            REPO_NAME: '${{github.event.repository.name}}'
+            SONAR_PROJECT_KEY: EnterpriseDB_repmgr
+            SONAR_URL: '${{secrets.SONARQUBE_URL}}'
+            SONAR_LOGIN: '${{secrets.SONARQUBE_LOGIN}}'
+            PULL_REQUEST_KEY: '${{github.event.number}}'
+            PULL_REQUEST_BRANCH: '${{github.head_ref}}'
+            PULL_REQUEST_BASE_BRANCH: '${{github.base_ref}}'
+            REPO_DEFAULT_BRANCH: '${{github.event.repository.default_branch}}'
+            REPO_EXCLUDE_FILES: '*properties*,**/src/test/**/*,**/*.sql,**/docs/**/*,**/*/*.java'

.github/workflows/sonarqube/configure-env.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+DEBIAN_FRONTEND=noninteractive sudo apt-get -y install debhelper curl autoconf zlib1g-dev \
+  libedit-dev libxml2-dev libxslt1-dev libkrb5-dev libssl-dev libpam0g-dev systemtap-sdt-dev \
+  libselinux1-dev build-essential bison apt-utils lsb-release devscripts \
+  software-properties-common git shellcheck flex
+
+sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
+wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
+sudo apt-get update
+
+sudo apt-get -y install libpq-dev postgresql-13 postgresql-server-dev-13
+
+./configure
+
+export PG_CONFIG=/usr/bin/pg_config
+
+/home/buildfarm/sonar/depends/build-wrapper-linux-x86/build-wrapper-linux-x86-64 --out-dir build_wrapper_output_directory make 

HISTORY

@@ -3,8 +3,6 @@
         node check: fix --downstream --nagios output; GitHub #749 (Ian)
         repmgrd: ensure witness node marked active (hslightdb)
         repmgrd: improve walsender disable check (Ian)
-        general: ensure replication slots can be dropped by a
-          replication-only user (Ian)
 
 5.3.1   2022-02-15
         repmgrd: fixes for potential connection leaks (hslightdb)

Makefile.in

@@ -30,7 +30,9 @@ DATA = \
   repmgr--5.1--5.2.sql \
   repmgr--5.2.sql \
   repmgr--5.2--5.3.sql \
-  repmgr--5.3.sql
+  repmgr--5.3.sql \
+  repmgr--5.3--5.4.sql \
+  repmgr--5.4.sql
 
 REGRESS = repmgr_extension
 

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for repmgr 5.3.0.
+# Generated by GNU Autoconf 2.69 for repmgr 5.4.0.
 #
 # Report bugs to <repmgr@googlegroups.com>.
 #
@@ -582,8 +582,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='repmgr'
 PACKAGE_TARNAME='repmgr'
-PACKAGE_VERSION='5.3.0'
+PACKAGE_VERSION='5.4.0'
-PACKAGE_STRING='repmgr 5.3.0'
+PACKAGE_STRING='repmgr 5.4.0'
 PACKAGE_BUGREPORT='repmgr@googlegroups.com'
 PACKAGE_URL='https://repmgr.org/'
 
@@ -1181,7 +1181,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures repmgr 5.3.0 to adapt to many kinds of systems.
+\`configure' configures repmgr 5.4.0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1242,7 +1242,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of repmgr 5.3.0:";;
+     short | recursive ) echo "Configuration of repmgr 5.4.0:";;
    esac
   cat <<\_ACEOF
 
@@ -1316,7 +1316,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-repmgr configure 5.3.0
+repmgr configure 5.4.0
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1335,7 +1335,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by repmgr $as_me 5.3.0, which was
+It was created by repmgr $as_me 5.4.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2487,7 +2487,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by repmgr $as_me 5.3.0, which was
+This file was extended by repmgr $as_me 5.4.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -2550,7 +2550,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-repmgr config.status 5.3.0
+repmgr config.status 5.4.0
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 

configure.in

@@ -1,6 +1,6 @@
-AC_INIT([repmgr], [5.3.2], [repmgr@googlegroups.com], [repmgr], [https://repmgr.org/])
+AC_INIT([repmgr], [5.4.0], [repmgr@googlegroups.com], [repmgr], [https://repmgr.org/])
 
-AC_COPYRIGHT([Copyright (c) 2010-2022, EnterpriseDB Corporation])
+AC_COPYRIGHT([Copyright (c) 2010-2021, EnterpriseDB Corporation])
 
 AC_CONFIG_HEADER(config.h)
 

dbutils.c

@@ -2139,7 +2139,13 @@ server_in_exclusive_backup_mode(PGconn *conn)
 {
 	BackupState backup_state = BACKUP_STATE_UNKNOWN;
 	const char *sqlquery = "SELECT pg_catalog.pg_is_in_backup()";
-	PGresult   *res = PQexec(conn, sqlquery);
+	PGresult   *res = NULL;
+
+	/* Exclusive backup removed from PostgreSQL 15 */
+	if (PQserverVersion(conn) >= 150000)
+		return BACKUP_STATE_NO_BACKUP;
+
+	res = PQexec(conn, sqlquery);
 
 	if (PQresultStatus(res) != PGRES_TUPLES_OK)
 	{
@@ -4610,17 +4616,17 @@ drop_replication_slot_replprot(PGconn *repl_conn, char *slot_name)
 	initPQExpBuffer(&query);
 
 	appendPQExpBuffer(&query,
-					  "DROP_REPLICATION_SLOT %s;",
+					  "DROP_REPLICATION_SLOT %s",
 					  slot_name);
 
 	log_verbose(LOG_DEBUG, "drop_replication_slot_replprot():\n  %s", query.data);
 
 	res = PQexec(repl_conn, query.data);
 
-	if (PQresultStatus(res) != PGRES_TUPLES_OK || !PQntuples(res))
+	if (PQresultStatus(res) != PGRES_TUPLES_OK)
 	{
 		log_db_error(repl_conn, query.data,
-					 _("drop_replication_slot_replprot(): unable to drop replication slot \"%s\""),
+					 _("drop_replication_slot_sql(): unable to drop replication slot \"%s\""),
 					 slot_name);
 
 		success = false;

doc/appendix-release-notes.xml

@@ -18,13 +18,10 @@
   <!-- remember to update the release date in ../repmgr_version.h.in -->
   <sect1 id="release-5.3.2">
     <title id="release-current">Release 5.3.2</title>
-    <para><emphasis>Wed 25 May, 2022</emphasis></para>
+    <para><emphasis>??? ??? ???, 2022</emphasis></para>
     <para>
       &repmgr; 5.3.2 is a minor release.
     </para>
-    <para>
-      Any running &repmgrd; instances should be restarted following this upgrade.
-    </para>
     <para>
       If upgrading from &repmgr; 5.2.1 or earlier, a PostgreSQL restart <emphasis>is</emphasis> required.
     </para>
@@ -64,13 +61,6 @@
               &repmgr; is a superuser before attempting to disable the WAL receiver.
             </para>
           </listitem>
-          <listitem>
-            <para>
-              If the &repmgr; user is a non-superuser, and a replication-only user exists,
-              ensure redundant replication slots are dropped correctly even
-              if the <option>-S/--superuser</option> option is not provided.
-            </para>
-          </listitem>
         </itemizedlist>
       </para>
     </sect2>
@@ -213,8 +203,7 @@
               risk of clashes with other shared libraries.
             </para>
             <para>
-              This does not affect user-facing SQL functions. However an upgrade
+              This does not affect user-facing SQL functions. Howe
-              of the installed extension version is required.
             </para>
           </listitem>
 

repmgr--5.3--5.4.sql

@@ -0,0 +1,2 @@
+-- complain if script is sourced in psql, rather than via CREAT EXTENSION
+\echo Use "CREATE EXTENSION repmgr" to load this file. \quit

repmgr--5.4.sql

@@ -0,0 +1,192 @@
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
+
+CREATE TABLE repmgr.nodes (
+  node_id          INTEGER     PRIMARY KEY,
+  upstream_node_id INTEGER     NULL REFERENCES nodes (node_id) DEFERRABLE,
+  active           BOOLEAN     NOT NULL DEFAULT TRUE,
+  node_name        TEXT        NOT NULL,
+  type             TEXT        NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
+  location         TEXT        NOT NULL DEFAULT 'default',
+  priority         INT         NOT NULL DEFAULT 100,
+  conninfo         TEXT        NOT NULL,
+  repluser         VARCHAR(63) NOT NULL,
+  slot_name        TEXT        NULL,
+  config_file      TEXT        NOT NULL
+);
+
+SELECT pg_catalog.pg_extension_config_dump('repmgr.nodes', '');
+
+CREATE TABLE repmgr.events (
+  node_id          INTEGER NOT NULL,
+  event            TEXT NOT NULL,
+  successful       BOOLEAN NOT NULL DEFAULT TRUE,
+  event_timestamp  TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  details          TEXT NULL
+);
+
+SELECT pg_catalog.pg_extension_config_dump('repmgr.events', '');
+
+CREATE TABLE repmgr.monitoring_history (
+  primary_node_id                INTEGER NOT NULL,
+  standby_node_id                INTEGER NOT NULL,
+  last_monitor_time              TIMESTAMP WITH TIME ZONE NOT NULL,
+  last_apply_time                TIMESTAMP WITH TIME ZONE,
+  last_wal_primary_location      PG_LSN NOT NULL,
+  last_wal_standby_location      PG_LSN,
+  replication_lag                BIGINT NOT NULL,
+  apply_lag                      BIGINT NOT NULL
+);
+
+CREATE INDEX idx_monitoring_history_time
+          ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
+
+SELECT pg_catalog.pg_extension_config_dump('repmgr.monitoring_history', '');
+
+CREATE VIEW repmgr.show_nodes AS
+   SELECT n.node_id,
+          n.node_name,
+          n.active,
+          n.upstream_node_id,
+          un.node_name AS upstream_node_name,
+          n.type,
+          n.priority,
+          n.conninfo
+     FROM repmgr.nodes n
+LEFT JOIN repmgr.nodes un
+       ON un.node_id = n.upstream_node_id;
+
+CREATE TABLE repmgr.voting_term (
+  term INT NOT NULL
+);
+
+CREATE UNIQUE INDEX voting_term_restrict
+ON repmgr.voting_term ((TRUE));
+
+CREATE RULE voting_term_delete AS
+   ON DELETE TO repmgr.voting_term
+   DO INSTEAD NOTHING;
+
+
+/* ================= */
+/* repmgrd functions */
+/* ================= */
+
+/* monitoring functions */
+
+CREATE FUNCTION set_local_node_id(INT)
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'repmgr_set_local_node_id'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_local_node_id()
+  RETURNS INT
+  AS 'MODULE_PATHNAME', 'repmgr_get_local_node_id'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION standby_set_last_updated()
+  RETURNS TIMESTAMP WITH TIME ZONE
+  AS 'MODULE_PATHNAME', 'repmgr_standby_set_last_updated'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION standby_get_last_updated()
+  RETURNS TIMESTAMP WITH TIME ZONE
+  AS 'MODULE_PATHNAME', 'repmgr_standby_get_last_updated'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION set_upstream_last_seen(INT)
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'repmgr_set_upstream_last_seen'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_upstream_last_seen()
+  RETURNS INT
+  AS 'MODULE_PATHNAME', 'repmgr_get_upstream_last_seen'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_upstream_node_id()
+  RETURNS INT
+  AS 'MODULE_PATHNAME', 'repmgr_get_upstream_node_id'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION set_upstream_node_id(INT)
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'repmgr_set_upstream_node_id'
+  LANGUAGE C STRICT;
+
+/* failover functions */
+
+CREATE FUNCTION notify_follow_primary(INT)
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'repmgr_notify_follow_primary'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_new_primary()
+  RETURNS INT
+  AS 'MODULE_PATHNAME', 'repmgr_get_new_primary'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION reset_voting_status()
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'repmgr_reset_voting_status'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_repmgrd_pid()
+  RETURNS INT
+  AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_repmgrd_pidfile()
+  RETURNS TEXT
+  AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
+  LANGUAGE C CALLED ON NULL INPUT;
+
+CREATE FUNCTION repmgrd_is_running()
+  RETURNS BOOL
+  AS 'MODULE_PATHNAME', 'repmgrd_is_running'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION repmgrd_pause(BOOL)
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'repmgrd_pause'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION repmgrd_is_paused()
+  RETURNS BOOL
+  AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_wal_receiver_pid()
+  RETURNS INT
+  AS 'MODULE_PATHNAME', 'repmgr_get_wal_receiver_pid'
+  LANGUAGE C STRICT;
+
+
+
+
+/* views */
+
+CREATE VIEW repmgr.replication_status AS
+  SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
+ 	     n.type AS node_type, n.active, last_monitor_time,
+         CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
+         m.last_wal_standby_location,
+         CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
+         CASE WHEN n.type='standby' THEN
+           CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
+           ELSE NULL
+         END AS replication_time_lag,
+         CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
+         AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
+    FROM repmgr.monitoring_history m
+    JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
+   WHERE (m.standby_node_id, m.last_monitor_time) IN (
+	          SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
+			    FROM repmgr.monitoring_history m1 GROUP BY 1
+         );
+

repmgr-client.c

@@ -3192,6 +3192,11 @@ copy_remote_files(char *host, char *remote_user, char *remote_path,
 								 " --exclude=pg_xlog/* --exclude=pg_log/*");
 		}
 
+		/*
+		 * From PostgreSQL 15, the core server no longer uses pg_stat_tmp,
+		 * but some extensions (e.g. pg_stat_statements) may still do, so
+		 * keep excluding it.
+		 */
 		appendPQExpBufferStr(&rsync_flags,
 							 " --exclude=pg_stat_tmp/*");
 
@@ -3868,17 +3873,19 @@ drop_replication_slot_if_exists(PGconn *conn, int node_id, char *slot_name)
 		 */
 
 		bool use_replication_protocol = false;
-		PGconn *slot_conn = _get_replication_slot_connection(conn,
+		PGconn *slot_conn = NULL;
-															 replication_user,
+
-															 &use_replication_protocol);
+		slot_conn = _get_replication_slot_connection(conn,
+													 replication_user,
+													 &use_replication_protocol);
 
 		if (use_replication_protocol == true)
 		{
-			success = drop_replication_slot_replprot(slot_conn, slot_name);
+			success = drop_replication_slot_replprot(conn, slot_name);
 		}
 		else
 		{
-			success = drop_replication_slot_sql(slot_conn, slot_name);
+			success = drop_replication_slot_sql(conn, slot_name);
 		}
 
 		if (success == true)
@@ -3958,13 +3965,9 @@ _determine_replication_slot_user(PGconn *conn, t_node_info *upstream_node_record
 			/* This should never happen */
 			log_error("unable to determine replication slot user");
 			if (upstream_node_record != NULL)
-			{
 				log_debug("%i %s %s", upstream_node_record->node_id, upstream_node_record->repluser, PQuser(conn));
-			}
 			else
-			{
 				log_debug("upstream_node_record not provided");
-			}
 		}
 	}
 }
@@ -3981,13 +3984,13 @@ _get_replication_slot_connection(PGconn *conn, char *replication_user, bool *use
 	switch (ReplicationSlotUser)
 	{
 		case USER_TYPE_UNKNOWN:
-			log_error("unable to determine user for managing replication slots");
+			log_error("unable to determine user for replication slot creation");
 			return NULL;
 
 		case  REPMGR_USER:
 			slot_conn = conn;
-			log_verbose(LOG_INFO, _("managing replication slot as user \"%s\""),
+			log_info(_("creating replication slot as user \"%s\""),
-						PQuser(conn));
+					 PQuser(conn));
 			break;
 
 		case REPLICATION_USER_NODE:
@@ -3998,7 +4001,7 @@ _get_replication_slot_connection(PGconn *conn, char *replication_user, bool *use
 											 true);
 			if (slot_conn == NULL || PQstatus(slot_conn) != CONNECTION_OK)
 			{
-				log_error(_("unable to manage replication connection as replication user \"%s\""),
+				log_error(_("unable to create replication connection as user \"%s\""),
 						  runtime_options.replication_user);
 				log_detail("%s", PQerrorMessage(slot_conn));
 
@@ -4006,8 +4009,8 @@ _get_replication_slot_connection(PGconn *conn, char *replication_user, bool *use
 				return NULL;
 			}
 			*use_replication_protocol = true;
-			log_verbose(LOG_INFO, _("managing replication slot as replication user \"%s\""),
+			log_info(_("creating replication slot as replication user \"%s\""),
-						replication_user);
+					 replication_user);
 		}
 		break;
 
@@ -4018,7 +4021,7 @@ _get_replication_slot_connection(PGconn *conn, char *replication_user, bool *use
 											 false);
 			if (slot_conn == NULL || PQstatus(slot_conn )!= CONNECTION_OK)
 			{
-				log_error(_("unable to create superuser connection as user \"%s\""),
+				log_error(_("unable to create super connection as user \"%s\""),
 						  runtime_options.superuser);
 				log_detail("%s", PQerrorMessage(slot_conn));
 
@@ -4026,8 +4029,8 @@ _get_replication_slot_connection(PGconn *conn, char *replication_user, bool *use
 
 				return NULL;
 			}
-			log_verbose(LOG_INFO, _("creating replication slot as superuser \"%s\""),
+			log_info(_("creating replication slot as superuser \"%s\""),
-						runtime_options.superuser);
+					 runtime_options.superuser);
 		}
 		break;
 	}

repmgr.c

@@ -80,11 +80,17 @@ typedef struct repmgrdSharedState
 
 static repmgrdSharedState *shared_state = NULL;
 
+#if (PG_VERSION_NUM >= 150000)
+static shmem_request_hook_type prev_shmem_request_hook = NULL;
+#endif
 static shmem_startup_hook_type prev_shmem_startup_hook = NULL;
 
-
 void		_PG_init(void);
+void		_PG_fini(void);
 
+#if (PG_VERSION_NUM >= 150000)
+static void repmgr_shmem_request(void);
+#endif
 static void repmgr_shmem_startup(void);
 
 PG_FUNCTION_INFO_V1(repmgr_set_local_node_id);
@@ -116,24 +122,62 @@ _PG_init(void)
 	if (!process_shared_preload_libraries_in_progress)
 		return;
 
+#if (PG_VERSION_NUM < 150000)
 	RequestAddinShmemSpace(MAXALIGN(sizeof(repmgrdSharedState)));
 
 #if (PG_VERSION_NUM >= 90600)
 	RequestNamedLWLockTranche(TRANCHE_NAME, 1);
 #else
 	RequestAddinLWLocks(1);
+#endif
 #endif
 
 	/*
 	 * Install hooks.
 	 */
+#if (PG_VERSION_NUM >= 150000)
+	prev_shmem_request_hook = shmem_request_hook;
+	shmem_request_hook = repmgr_shmem_request;
+#endif
+
 	prev_shmem_startup_hook = shmem_startup_hook;
 	shmem_startup_hook = repmgr_shmem_startup;
+
 }
 
 
 /*
- * shmem_startup hook: allocate or attach to shared memory,
+ * Module unload callback
+ */
+void
+_PG_fini(void)
+{
+	/* Uninstall hook */
+#if (PG_VERSION_NUM >= 150000)
+	shmem_request_hook = prev_shmem_request_hook;
+#endif
+
+	shmem_startup_hook = prev_shmem_startup_hook;
+}
+
+#if (PG_VERSION_NUM >= 150000)
+/*
+ * shmem_requst_hook: request shared memory
+ */
+static void
+repmgr_shmem_request(void)
+{
+	if (prev_shmem_request_hook)
+		prev_shmem_request_hook();
+
+	RequestAddinShmemSpace(MAXALIGN(sizeof(repmgrdSharedState)));
+
+	RequestNamedLWLockTranche(TRANCHE_NAME, 1);
+}
+#endif
+
+/*
+ * shmem_ hook: allocate or attach to shared memory,
  */
 static void
 repmgr_shmem_startup(void)

repmgr.control

@@ -1,6 +1,6 @@
 # repmgr extension
 comment = 'Replication manager for PostgreSQL'
-default_version = '5.3'
+default_version = '5.4'
 module_pathname = '$libdir/repmgr'
 relocatable = false
 schema = repmgr

repmgr_version.h.in

@@ -1,7 +1,7 @@
 #define REPMGR_VERSION_DATE ""
-#define REPMGR_VERSION "5.3.2"
+#define REPMGR_VERSION "5.4dev"
-#define REPMGR_VERSION_NUM 50302
+#define REPMGR_VERSION_NUM 50400
-#define REPMGR_EXTENSION_VERSION "5.3"
+#define REPMGR_EXTENSION_VERSION "5.4"
-#define REPMGR_EXTENSION_NUM 50300
+#define REPMGR_EXTENSION_NUM 50400
-#define REPMGR_RELEASE_DATE "2022-05-25"
+#define REPMGR_RELEASE_DATE "2022-XX-XX"
 #define PG_ACTUAL_VERSION_NUM