TT#40459 Move the rtpengine NFS mount point into its own systemd unit

We do not use a proper mount unit because that requires the mount point
to be encoded in the filename which is variable and depends on the value
coming from config.yml.

Change-Id: Ibb637c533c94bc3db119111460ca647a50a205af

debian/ngcp-rtpengine-recording-daemon.ngcp-rtpengine-recording-nfs-mount.service

@@ -0,0 +1,20 @@
+[Unit]
+Description=NGCP RTP/media Recording Daemon NFS mount point
+After=network-online.target
+After=remote-fs.target
+After=rpcbind.socket
+After=rpcbind.service
+After=nfs-client.target
+Requires=network-online.target
+Requires=rpcbind.socket
+Requires=rpcbind.service
+Requires=nfs-client.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/sbin/ngcp-rtpengine-recording-nfs-setup start
+ExecStop=/usr/sbin/ngcp-rtpengine-recording-nfs-setup stop
+
+[Install]
+WantedBy=multi-user.target

debian/ngcp-rtpengine-recording-daemon.service

@@ -2,12 +2,13 @@
 Description=NGCP RTP/media Recording Daemon
 After=network-online.target
 After=remote-fs.target
+After=ngcp-rtpengine-recording-nfs-mount.service
 Requires=network-online.target
+Requires=ngcp-rtpengine-recording-nfs-mount.service
 
 [Service]
 Type=simple
 PIDFile=/run/ngcp-rtpengine-recording-daemon.pid
-ExecStartPre=/usr/sbin/ngcp-rtpengine-recording-nfs-setup start
 ExecStart=/usr/sbin/rtpengine-recording -f -E --pidfile /run/ngcp-rtpengine-recording-daemon.pid --config-file /etc/rtpengine/rtpengine-recording.conf
 
 [Install]

debian/ngcp-rtpengine-recording-nfs-setup

@@ -4,6 +4,7 @@ set -e
 
 PATH=/sbin:/bin:/usr/sbin:/usr/bin
 DEFAULTS=/etc/default/ngcp-rtpengine-recording-daemon
+DESC="RTP engine recording NFS share"
 
 . /lib/lsb/init-functions
 
@@ -20,13 +21,17 @@ case "$1" in
   start)
     if [ "$MUST_NFS" = yes ]; then
       if ! grep -E -q "^[^ :]+:[^ :]+ $NFS_LOCAL_MOUNT nfs.? " /proc/mounts; then
-        log_action_msg "Mounting NFS share"
+        log_action_msg "Mounting $DESC"
         test -d "$NFS_LOCAL_MOUNT" || mkdir -p "$NFS_LOCAL_MOUNT"
         mount -t nfs -o "$NFS_OPTIONS" "$NFS_HOST:$NFS_REMOTE_PATH" "$NFS_LOCAL_MOUNT"
       fi
     fi
     ;;
   stop)
+    if grep -E -q "^[^ :]+:[^ :]+ $NFS_LOCAL_MOUNT nfs.? " /proc/mounts; then
+      log_action_msg "Unmounting $DESC"
+      umount "$NFS_LOCAL_MOUNT"
+    fi
     ;;
   *)
     echo "Usage: $0 {start|stop}" >&2

debian/rules

@@ -70,4 +70,8 @@ override_dh_install:
 override_dh_strip:
 	dh_strip --dbgsym-migration='ngcp-rtpengine-dbg (<= 6.0.0.0+0~mr6.0.0.0)'
 
+override_dh_systemd_enable:
+	dh_systemd_enable
+	dh_systemd_enable -pngcp-rtpengine-recording-daemon --name=ngcp-rtpengine-recording-nfs-mount
+
 override_dh_auto_test: