pre-deploy

#!/bin/bash
set -e;

APP="$1"
HOST_DIR="$DOKKU_ROOT/.redis/volume-$APP"

# check if redis is enabled for the app
if [[ -d $HOST_DIR ]]; then
  REDIS_APP_IMAGE="redis/$APP"
  REDIS_APP_IMAGE_ID=$(docker images | grep "$REDIS_IMAGE" | awk '{print $3}')

  # verifies that an app mimage has been mae
  if [[ -n $REDIS_APP_IMAGE_ID ]]; then
    echo "-----> Checking status of Redis"

    REDIS_IMAGE=$(docker images | grep "luxifer/redis " | awk '{print $3}')
    if [[ -z $REDIS_IMAGE ]]; then
      echo "Redis image not found...Did you run 'dokku plugins-install' ?"
      exit 1
    fi

    echo "	Found image redis/$APP"
    echo -n "	Checking status..."

    # since this is in pre-deploy, i don't think we'll run into a situation where the container is already started
    # but the postgres guys had it.
    # "never say never"
    REDIS_APP_IMAGE_CONTAINER_ID=$(docker ps | grep "$REDIS_APP_IMAGE" | awk '{print $1}')
    if [[ -n $REDIS_APP_IMAGE_CONTAINER_ID ]]; then
      echo "ok."
    else
      echo "stopped."
      VOLUME="$HOST_DIR:/var/lib/redis"
      echo -n "	Launching $REDIS_APP_IMAGE..."
      echo "COMMAND: docker run -v $VOLUME -p 6379 -d $REDIS_APP_IMAGE /bin/start_redis.sh"
      ID=$(docker run -v $VOLUME -p 6379 -d $REDIS_APP_IMAGE /bin/start_redis.sh)
      sleep 4
      dokku redis:link $APP $APP
      sleep 1
      echo "ok."
    fi
  fi
fi