Move RADV fastboot handling to a service script (#5108)

* New /usr/local/bin/ script to start/stop radv service

Author: vaibhavhd

files/build_templates/radv.service.j2

@@ -8,9 +8,9 @@ StartLimitBurst=3
 
 [Service]
 User={{ sonicadmin_user }}
-ExecStartPre=/usr/bin/{{ docker_container_name }}.sh start
-ExecStart=/usr/bin/{{ docker_container_name }}.sh wait
-ExecStop=/usr/bin/{{ docker_container_name }}.sh stop
+ExecStartPre=/usr/local/bin/{{ docker_container_name }}.sh start
+ExecStart=/usr/local/bin/{{ docker_container_name }}.sh wait
+ExecStop=/usr/local/bin/{{ docker_container_name }}.sh stop
 Restart=always
 RestartSec=30
 

files/build_templates/sonic_debian_extension.j2

@@ -516,10 +516,11 @@ sudo LANG=C chroot $FILESYSTEM_ROOT fuser -km /sys || true
 sudo LANG=C chroot $FILESYSTEM_ROOT umount -lf /sys
 {% endif %}
 
-# Copy swss and syncd service script
+# Copy service scripts (swss, syncd, bgp, radv)
 sudo LANG=C cp $SCRIPTS_DIR/swss.sh $FILESYSTEM_ROOT/usr/local/bin/swss.sh
 sudo LANG=C cp $SCRIPTS_DIR/syncd.sh $FILESYSTEM_ROOT/usr/local/bin/syncd.sh
 sudo LANG=C cp $SCRIPTS_DIR/bgp.sh $FILESYSTEM_ROOT/usr/local/bin/bgp.sh
+sudo LANG=C cp $SCRIPTS_DIR/radv.sh $FILESYSTEM_ROOT/usr/local/bin/radv.sh
 
 # Copy sonic-netns-exec script
 sudo LANG=C cp $SCRIPTS_DIR/sonic-netns-exec $FILESYSTEM_ROOT/usr/bin/sonic-netns-exec

files/scripts/radv.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+
+function debug()
+{
+    /usr/bin/logger $1
+    /bin/echo `date` "- $1" >> ${DEBUGLOG}
+}
+
+function check_warm_boot()
+{
+    SYSTEM_WARM_START=`$SONIC_DB_CLI STATE_DB hget "WARM_RESTART_ENABLE_TABLE|system" enable`
+    SERVICE_WARM_START=`$SONIC_DB_CLI STATE_DB hget "WARM_RESTART_ENABLE_TABLE|${SERVICE}" enable`
+    if [[ x"$SYSTEM_WARM_START" == x"true" ]] || [[ x"$SERVICE_WARM_START" == x"true" ]]; then
+        WARM_BOOT="true"
+    else
+        WARM_BOOT="false"
+    fi
+}
+
+function check_fast_boot ()
+{
+    if [[ $($SONIC_DB_CLI STATE_DB GET "FAST_REBOOT|system") == "1" ]]; then
+        FAST_BOOT="true"
+    else
+        FAST_BOOT="false"
+    fi
+}
+
+start() {
+    debug "Starting ${SERVICE}$DEV service..."
+
+    check_warm_boot
+    check_fast_boot
+    debug "Warm boot flag: ${SERVICE}$DEV ${WARM_BOOT}."
+    debug "Fast boot flag: ${SERVICE}$DEV ${FAST_BOOT}."
+
+    # start service docker
+    /usr/bin/${SERVICE}.sh start $DEV
+    debug "Started ${SERVICE}$DEV service..."
+}
+
+wait() {
+    /usr/bin/${SERVICE}.sh wait $DEV
+}
+
+stop() {
+    debug "Stopping ${SERVICE}$DEV service..."
+
+    check_warm_boot
+    check_fast_boot
+    debug "Warm boot flag: ${SERVICE}$DEV ${WARM_BOOT}."
+    debug "Fast boot flag: ${SERVICE}$DEV ${FAST_BOOT}."
+
+    # For WARM/FAST boot do not perform service stop
+    if [[ x"$WARM_BOOT" != x"true" ]] && [[ x"$FAST_BOOT" != x"true" ]]; then
+        /usr/bin/${SERVICE}.sh stop $DEV
+        debug "Stopped ${SERVICE}$DEV service..."
+    else
+        debug "Killing Docker radv..."
+        /usr/bin/docker kill radv &> /dev/null || debug "Docker radv is not running ($?) ..."
+    fi
+}
+
+DEV=$2
+
+SERVICE="radv"
+DEBUGLOG="/tmp/radv-debug$DEV.log"
+NAMESPACE_PREFIX="asic"
+if [ "$DEV" ]; then
+    NET_NS="$NAMESPACE_PREFIX$DEV" #name of the network namespace
+    SONIC_DB_CLI="sonic-db-cli -n $NET_NS"
+else
+    SONIC_DB_CLI="sonic-db-cli"
+fi
+
+case "$1" in
+    start|wait|stop)
+        $1
+        ;;
+    *)
+        echo "Usage: $0 {start|wait|stop}"
+        exit 1
+        ;;
+esac