pre-deploy

#!/usr/bin/env bash
# Runs application varnish in container

set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
source "$(dirname $0)/../../../dokku/plugins/common/functions"

# load common functions
. $(dirname "$0")/functions

check_app_name $1
APP="$1"
PORT="$2"

dokku_log_info1 "Varnish pre-deploy for $APP"

init_common_vars

# Check if an existing varnish volume exists
VARNISH_IMAGE_ID=$(docker images | grep "$VARNISH_IMAGE" | awk '{print $3}')
if [[ -n $VARNISH_IMAGE_ID ]]; then
  dokku_log_info1 "Checking status of Varnish"

  # Check if varnish container is installed
  IMAGE=$(docker images | grep $DOCKER_VARNISH_IMAGE | awk '{print $3}')
  check_varnish_image $IMAGE

  dokku_log_verbose "Found image $VARNISH_IMAGE instance"

  VARNISH_CONTAINER=$(get_app_running_container_ids $VARNISH_IMAGE)

  if [[ -n $VARNISH_CONTAINER ]]; then
    dokku_log_verbose "Checking status... ok."
  else
    dokku_log_verbose "Checking status... stopped."

    port="`cat $PORT_PROPERTY`"

    # Launch container
    ID=$(docker run -e CACHE_SIZE="$VARNISH_CACHE_SIZE" -e THROTTLE_LIMIT="$VARNISH_THROTTLE_LIMIT" -e GRACE_TTL="$VARNISH_GRACE_TTL" -e GRACE_MAX="$VARNISH_GRACE_MAX" -e BACKEND_PORT_${APP_PORT}_TCP_ADDR=$LOCAL_IP -e BACKEND_ENV_PORT=$APP_PORT -p $port:$VARNISH_PORT -d $VARNISH_IMAGE /bin/run.sh)
    sleep 1
    dokku_log_verbose "Started $VARNISH_IMAGE"
  fi
fi