[docker-syncd-brcm]: use service dependency in supervisord to start services

platform/broadcom/docker-syncd-brcm/Dockerfile.j2

@@ -21,7 +21,7 @@ debs/
 ## TODO: add kmod into Depends
 RUN apt-get install -yf kmod
 
-COPY ["files/dsserve", "files/bcmcmd", "start.sh", "bcmsh", "/usr/bin/"]
+COPY ["files/dsserve", "files/bcmcmd", "start.sh", "start_led.sh", "bcmsh", "/usr/bin/"]
 RUN chmod +x /usr/bin/dsserve /usr/bin/bcmcmd
 
 COPY ["supervisord.conf", "/etc/supervisor/conf.d/"]

platform/broadcom/docker-syncd-brcm/start.sh

@@ -1,43 +1,12 @@
 #!/usr/bin/env bash
 
-PLATFORM_DIR=/usr/share/sonic/platform
 HWSKU_DIR=/usr/share/sonic/hwsku
 
 SYNCD_SOCKET_FILE=/var/run/sswsyncd/sswsyncd.socket
 
-# Function: wait until syncd has created the socket for bcmcmd to connect to
-wait_syncd() {
-    while true; do
-        if [ -e ${SYNCD_SOCKET_FILE} ]; then
-            break
-        fi
-        sleep 1
-    done
-
-    # wait until bcm sdk is ready to get a request
-    counter=0
-    while true; do
-        /usr/bin/bcmcmd -t 1 "show unit" | grep BCM >/dev/null 2>&1
-        rv=$?
-        if [ $rv -eq 0 ]; then
-            break
-        fi
-        counter=$((counter+1))
-        if [ $counter -ge 60 ]; then
-            echo "syncd is not ready to take commands after $counter re-tries; Exiting!"
-            break
-        fi
-        sleep 1
-    done
-}
-
-
 # Remove stale files if they exist
-rm -f /var/run/rsyslogd.pid
 rm -f ${SYNCD_SOCKET_FILE}
 
-supervisorctl start rsyslogd
-
 mkdir -p /etc/sai.d/
 
 # Create/Copy the sai.profile to /etc/sai.d/sai.profile
@@ -48,11 +17,3 @@ else
         cp $HWSKU_DIR/sai.profile /etc/sai.d/sai.profile
     fi
 fi
-
-supervisorctl start syncd
-
-# If this platform has an initialization file for the Broadcom LED microprocessor, load it
-if [[ -r ${PLATFORM_DIR}/led_proc_init.soc && ! -f /var/warmboot/warm-starting ]]; then
-    wait_syncd
-    supervisorctl start ledinit
-fi

platform/broadcom/docker-syncd-brcm/start_led.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+PLATFORM_DIR=/usr/share/sonic/platform
+SYNCD_SOCKET_FILE=/var/run/sswsyncd/sswsyncd.socket
+
+# Function: wait until syncd has created the socket for bcmcmd to connect to
+wait_syncd() {
+    while true; do
+        if [ -e ${SYNCD_SOCKET_FILE} ]; then
+            break
+        fi
+        sleep 1
+    done
+
+    # wait until bcm sdk is ready to get a request
+    counter=0
+    while true; do
+        /usr/bin/bcmcmd -t 1 "show unit" | grep BCM >/dev/null 2>&1
+        rv=$?
+        if [ $rv -eq 0 ]; then
+            break
+        fi
+        counter=$((counter+1))
+        if [ $counter -ge 60 ]; then
+            echo "syncd is not ready to take commands after $counter re-tries; Exiting!"
+            break
+        fi
+        sleep 1
+    done
+}
+
+# If this platform has an initialization file for the Broadcom LED microprocessor, load it
+if [[ -r ${PLATFORM_DIR}/led_proc_init.soc && ! -f /var/warmboot/warm-starting ]]; then
+    wait_syncd
+fi
+
+/usr/bin/bcmcmd -t 60 "rcload /usr/share/sonic/platform/led_proc_init.soc"

platform/broadcom/docker-syncd-brcm/supervisord.conf

@@ -3,27 +3,39 @@ logfile_maxbytes=1MB
 logfile_backups=2
 nodaemon=true
 
+[eventlistener:dependent-startup]
+command=python -m supervisord_dependent_startup
+autostart=true
+autorestart=unexpected
+startretries=0
+exitcodes=0,3
+events=PROCESS_STATE
+
 [eventlistener:supervisor-proc-exit-listener]
 command=/usr/bin/supervisor-proc-exit-listener --container-name syncd
 events=PROCESS_STATE_EXITED
 autostart=true
 autorestart=unexpected
 
-[program:start.sh]
-command=/usr/bin/start.sh
-priority=1
-autostart=true
-autorestart=false
-stdout_logfile=syslog
-stderr_logfile=syslog
-
 [program:rsyslogd]
-command=/usr/sbin/rsyslogd -n
-priority=2
+command=/usr/sbin/rsyslogd -n -iNONE
+priority=1
 autostart=false
 autorestart=unexpected
 stdout_logfile=syslog
 stderr_logfile=syslog
+dependent_startup=true
+
+[program:start]
+command=/usr/bin/start.sh
+priority=2
+autostart=false
+autorestart=false
+startsecs=0
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=rsyslogd:running
 
 [program:syncd]
 command=/usr/bin/syncd_start.sh
@@ -32,12 +44,16 @@ autostart=false
 autorestart=false
 stdout_logfile=syslog
 stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=start:exited
 
 [program:ledinit]
-command=/usr/bin/bcmcmd -t 60 "rcload /usr/share/sonic/platform/led_proc_init.soc"
+command=/usr/bin/start_led.sh
 priority=4
 autostart=false
 autorestart=false
 startsecs=0
 stdout_logfile=syslog
 stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=syncd:running