blue-green

gistfile1.txt

def gitURL="[email protected]/Account.git"
def appName="acc-prod-bluegreen"
def svcName="acc-prod"
def project="cloud-prod"
def tag="blue"
def altTag="green"      
def verbose="false"       

try {
   timeout(time: 500, unit: 'MINUTES') {
     
      node {
        
        stage("Initialize") {
          sh "oc get virtualservice ${svcName} -n ${project} -o jsonpath='{ .spec.http[1].route[0].destination.subset }' --loglevel=4 > activeservice"
          activeService = readFile('activeservice').trim()
          if (activeService == "blue") {
            tag = "green"
            altTag = "blue"
          }
          sh "oc get virtualservice ${svcName} -n ${project} -o jsonpath='{ .spec.hosts[0] }' --loglevel=4 > routehost"
          routeHost = readFile('routehost').trim()
        }             
      
        stage("Tag image") {
           openshiftTag srcStream: appName, namespace: project, srcTag: 'latest', destinationStream: appName, destinationTag: tag, verbose: verbose
        }
        
        stage("Deploy") {
          openshiftDeploy depCfg: "${svcName}-${tag}", namespace: "${project}", verbose: 'false', waitTime: '', waitUnit: 'sec'
          openshiftVerifyDeployment depCfg: "${svcName}-${tag}", namespace: "${project}", verbose: 'false'
        }
        
        stage("Scale") {
          sh "oc get dc ${svcName}-${altTag} -n ${project} -o jsonpath='{ .status.availableReplicas }' --loglevel=4 > availableReplicas"
          availableReplicas = readFile('availableReplicas').trim()
          openshiftScale depCfg: "${svcName}-${tag}", namespace: "${project}", replicaCount: "${availableReplicas}"
        }

        stage("Test") {
          sh "oc patch virtualservice ${svcName} -n ${project} --type='json' -p='[{\"op\":\"replace\", \"path\": \"/spec/http/0/route/0/destination/subset\", \"value\": \"${tag}\" }]'"
          input message: "Test deployment: http://${routeHost}. Approve?", id: "approval"
        }

        stage("Go Live") {
          sh "oc set -n ${project} route-backends ${appName} ${svcName}-${tag}=100 ${svcName}-${altTag}=0 --loglevel=4"
          sh "oc patch virtualservice ${svcName} -n ${project} --type='json' -p='[{\"op\":\"replace\", \"path\": \"/spec/http/1/route/0/destination/subset\", \"value\": \"${tag}\" }]'"
          openshiftScale depCfg: "${svcName}-${altTag}", namespace: "${project}", replicaCount: "1"
        }
      }
   }
} catch (err) {
   node { 
      sh "oc patch virtualservice ${svcName} -n ${project} --type='json' -p='[{\"op\":\"replace\", \"path\": \"/spec/http/0/route/0/destination/subset\", \"value\": \"${altTag}\" }]'"
      openshiftScale depCfg: "${svcName}-${tag}", namespace: "${project}", replicaCount: "1"
   }   
   echo "in catch block"
   echo "Caught: ${err}"
   currentBuild.result = 'FAILURE'
   throw err