upgrade.sh - デプロイ処理の実際

upgrade.sh

#!/bin/bash

export AWS_DEFAULT_REGION="ap-northeast-1"

APP="example_app"
APP_HOME="/opt/${APP}"
DEPLOY_TO="${APP_HOME}/releases"
S3_FOLDER="s3://example-app-packages"

# Get the specified or latest version number
aws s3 cp ${S3_FOLDER}/VERSION /tmp/VERSION
VERSION=${1:-"`cat /tmp/VERSION`"}

echo "Trying to deploy ${APP} ${VERSION} ..."

# Deploy
if [ ! -d "${DEPLOY_TO}/${VERSION}" ]; then
  mkdir -p ${DEPLOY_TO}/${VERSION}
  aws s3 cp ${S3_FOLDER}/${VERSION}.tar.gz ${DEPLOY_TO}/${VERSION}/${APP}.tar.gz
  cp ${APP_HOME}/app.conf ${DEPLOY_TO}/${VERSION}/${APP}.conf   # Apply config
else
  echo "${APP} ${VERSION} already exists."
fi

# Upgrade
if [ ! "${VERSION}" = "`curl -s http://localhost:8080/api/public/version`" ]; then
  # Upgrade 
  ${APP_HOME}/bin/${APP} upgrade ${VERSION}

  # Set the current and prev versions
  if [ -e "${DEPLOY_TO}/current" ]; then
    mv ${DEPLOY_TO}/current ${DEPLOY_TO}/prev
  fi
  echo $VERSION > ${DEPLOY_TO}/current
else
  echo "${APP} ${VERSION} is already running."
fi