Delete obsolete elasticbeanstalk app versions

purge-old-app-version.sh

#!/usr/bin/env bash

# 2015/12/03 Guo Yong
# Delete obsolete elasticbeanstalk app versions
# http://franklanganke.com/remove-old-aws-elastic-beanstalk-application-versions-bash-cron/

application=$1
filter="uat"
aws elasticbeanstalk describe-environments --application-name=$application --output text --query 'Environments[*].[EnvironmentName,VersionLabel]' | grep -i $filter | awk '{print $2}' > deployed-versions.txt

versions=$(aws elasticbeanstalk describe-application-versions --application-name $application --output text --query 'ApplicationVersions[*].[VersionLabel,Description]' | grep $filter | awk '{print $1}')

for version in $versions
do
  if grep -Fxq "$version" deployed-versions.txt
  then
    echo "Version \"$version\" is deployed. Skipping......"
  else
    aws elasticbeanstalk delete-application-version --application-name $application --version-label $version --delete-source-bundle && echo "Version \"$version\" is deleted." || echo "Failed to delete version \"$verion\""
  fi
done

rm -f deployed-versions.txt