Jenkisfile.groovy

def appName="voting-app"
def project=""
def tag="blue"
def altTag="green"
def verbose="true"
node {
  project = env.PROJECT_NAME
  stage("Initialize") {
    sh "oc get route ${appName} -n ${project} -o jsonpath='{ .spec.to.name }' --loglevel=4 > activeservice"
    activeService = readFile('activeservice').trim()
    if (activeService == "${appName}-blue") {
      tag = "green"
      altTag = "blue"
    }
    sh "oc get route ${tag}-${appName} -n ${project} -o jsonpath='{ .spec.host }' --loglevel=4 > routehost"
    routeHost = readFile('routehost').trim()
  }
  stage("Build") {
    echo "building tag ${tag}"
    openshiftBuild buildConfig: appName, showBuildLogs: "true", verbose: verbose
  }

  stage("Deploy Test") {
    openshiftTag srcStream: appName, srcTag: 'latest', destinationStream: appName, destinationTag: tag, verbose: verbose
    openshiftVerifyDeployment deploymentConfig: "${appName}-${tag}", verbose: verbose
  }

  stage("Test") {
    input message: "Test deployment: http://${routeHost}. Approve?", id: "approval"
  }

  stage("Go Live") {
    sh "oc set -n ${project} route-backends ${appName} ${appName}-${tag}=100 ${appName}-${altTag}=0 --loglevel=4"
  }
}