sonic-buildimage/files/build_templates/docker_image_ctl.j2
Ying Xie 56ae5edc7f [service template] Starting new docker when HWSKU change is detected (#946)
Existing dockers has paths mounted according to the HWSKU. When HWSKU
changes, these dockers need to be destroyed and recreated with the
correct paths mounted.
2017-09-14 08:43:02 -07:00

85 lines
2.6 KiB
Django/Jinja

#!/bin/bash
function getMountPoint()
{
echo $1 | python -c "import sys, json, os; mnts = [x for x in json.load(sys.stdin)[0]['Mounts'] if x['Destination'] == '/usr/share/sonic/hwsku']; print '' if len(mnts) == 0 else os.path.basename(mnts[0]['Source'])" 2>/dev/null
}
function postStartAction()
{
{%- if docker_container_name != "database" %}
:
{%- else %}
while true; do
if [[ "$(docker exec -i database redis-cli ping)" =~ PONG.* ]]; then
break
fi
sleep 1
done
{%- endif %}
}
# Obtain our platform as we will mount directories with these names in each docker
PLATFORM=`sonic-cfggen -v platform`
{%- if docker_container_name == "database" %}
# Don't mount HWSKU in {{docker_container_name}} container.
HWSKU=""
{%- else %}
# Obtain our HWSKU as we will mount directories with these names in each docker
HWSKU=`sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]'`
{%- endif %}
start() {
DOCKERCHECK=`docker inspect --type container {{docker_container_name}} 2>/dev/null`
if [ "$?" -eq "0" ]; then
DOCKERMOUNT=`getMountPoint "$DOCKERCHECK"`
if [ "$DOCKERMOUNT" == "$HWSKU" ]; then
echo "Starting existing {{docker_container_name}} container with HWSKU $HWSKU"
docker start {{docker_container_name}}
postStartAction
exit 0
fi
# docker created with a different HWSKU, remove and recreate
echo "Removing obsolete {{docker_container_name}} container with HWSKU $DOCKERMOUNT"
docker rm {{docker_container_name}}
fi
{%- if docker_container_name == "database" %}
echo "Starting new {{docker_container_name}} container"
{%- else %}
echo "Starting new {{docker_container_name}} container with HWSKU $HWSKU"
{%- endif %}
docker run -d {{docker_image_run_opt}} \
{%- if '--log-driver=json-file' in docker_image_run_opt or '--log-driver' not in docker_image_run_opt %}
--log-opt max-size=2M --log-opt max-file=5 \
{%- endif %}
-v /var/run/redis:/var/run/redis:rw \
-v /usr/share/sonic/device/$PLATFORM:/usr/share/sonic/platform:ro \
{%- if docker_container_name != "database" %}
-v /usr/share/sonic/device/$PLATFORM/$HWSKU:/usr/share/sonic/hwsku:ro \
{%- endif %}
--name={{docker_container_name}} {{docker_image_name}}:latest
postStartAction
}
attach() {
docker attach --no-stdin {{docker_container_name}}
}
stop() {
docker stop {{docker_container_name}}
}
case "$1" in
start|stop|attach)
$1
;;
*)
echo "Usage: $0 {start|stop|attach}"
exit 1
;;
esac