cfe01f19e4
* [swss.sh] refactor ssh service script code
- Move checks and waits to helper functions.
- Remove early returns from code stream
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
* [swss.sh] Add debug log for service state changes
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
* [syncd] Separate out syncd service from swss service
Still make them start/stop/restart synchronously so existing scripts
continue working.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
* Remove extra 'After' in swss service and remove syncd docker warm boot code
Syncd warm boot needs more thinking, we can put it back once the work
flow has been defined and ready for coding/testing.
* [syncd] syncd start/stop/restart shouldn't affect swss state
Semi-detach syncd service state change from swss:
- swss state change still chase syncd service to follow except warm boot
- syncd state change will only affect itself.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
* add missing '{'
127 lines
3.2 KiB
Bash
Executable File
127 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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SERVICE="swss"
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PEER="syncd"
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DEBUGLOG="/tmp/swss-syncd-debug.log"
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LOCKFILE="/tmp/swss-syncd-lock"
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function debug()
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{
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/bin/echo `date` "- $1" >> ${DEBUGLOG}
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}
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function lock_service_state_change()
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{
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debug "Locking ${LOCKFILE} from ${SERVICE} service"
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exec {LOCKFD}>${LOCKFILE}
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/usr/bin/flock -x ${LOCKFD}
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trap "/usr/bin/flock -u ${LOCKFD}" 0 2 3 15
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debug "Locked ${LOCKFILE} (${LOCKFD}) from ${SERVICE} service"
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}
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function unlock_service_state_change()
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{
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debug "Unlocking ${LOCKFILE} (${LOCKFD}) from ${SERVICE} service"
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/usr/bin/flock -u ${LOCKFD}
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}
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function check_warm_boot()
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{
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SYSTEM_WARM_START=`/usr/bin/redis-cli -n 4 hget "WARM_RESTART|system" enable`
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SERVICE_WARM_START=`/usr/bin/redis-cli -n 4 hget "WARM_RESTART|${SERVICE}" enable`
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if [[ x"$SYSTEM_WARM_START" == x"true" ]] || [[ x"$SERVICE_WARM_START" == x"true" ]]; then
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WARM_BOOT="true"
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else
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WARM_BOOT="false"
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fi
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}
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function validate_restart_count()
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{
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if [[ x"$WARM_BOOT" == x"true" ]]; then
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RESTART_COUNT=`/usr/bin/redis-cli -n 6 hget "WARM_RESTART_TABLE|orchagent" restart_count`
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# We have to make sure db data has not been flushed.
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if [[ -z "$RESTART_COUNT" ]]; then
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WARM_BOOT="false"
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fi
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fi
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}
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function wait_for_database_service()
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{
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# Wait for redis server start before database clean
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until [[ $(/usr/bin/docker exec database redis-cli ping | grep -c PONG) -gt 0 ]];
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do sleep 1;
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done
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# Wait for configDB initialization
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until [[ $(/usr/bin/docker exec database redis-cli -n 4 GET "CONFIG_DB_INITIALIZED") ]];
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do sleep 1;
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done
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}
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start() {
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debug "Starting ${SERVICE} service..."
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lock_service_state_change
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wait_for_database_service
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check_warm_boot
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validate_restart_count
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debug "Warm boot flag: ${SERVICE} ${WARM_BOOT}."
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# Don't flush DB during warm boot
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if [[ x"$WARM_BOOT" != x"true" ]]; then
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/usr/bin/docker exec database redis-cli -n 0 FLUSHDB
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/usr/bin/docker exec database redis-cli -n 2 FLUSHDB
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/usr/bin/docker exec database redis-cli -n 5 FLUSHDB
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/usr/bin/docker exec database redis-cli -n 6 FLUSHDB
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fi
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# start service docker
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/usr/bin/${SERVICE}.sh start
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debug "Started ${SERVICE} service..."
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# Unlock has to happen before reaching out to peer service
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unlock_service_state_change
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if [[ x"$WARM_BOOT" != x"true" ]]; then
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/bin/systemctl start ${PEER}
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fi
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/usr/bin/${SERVICE}.sh attach
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}
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stop() {
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debug "Stopping ${SERVICE} service..."
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[[ -f ${LOCKFILE} ]] || /usr/bin/touch ${LOCKFILE}
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lock_service_state_change
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check_warm_boot
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debug "Warm boot flag: ${SERVICE} ${WARM_BOOT}."
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/usr/bin/${SERVICE}.sh stop
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debug "Stopped ${SERVICE} service..."
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# Unlock has to happen before reaching out to peer service
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unlock_service_state_change
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# if warm start enabled or peer lock exists, don't stop peer service docker
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if [[ x"$WARM_BOOT" != x"true" ]]; then
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/bin/systemctl stop ${PEER}
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fi
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}
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case "$1" in
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start|stop)
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$1
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;;
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*)
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echo "Usage: $0 {start|stop}"
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exit 1
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;;
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esac
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