Jenkins : use withCredentials in global environment section

Question

I have a Jenkins pipeline with multiple stages that all require the same environment variables, I run this like so:

script {
    withCredentials([usernamePassword(credentialsId: 'COMPOSER_REPO_MAGENTO', passwordVariable: 'MAGE_REPO_PASS', usernameVariable: 'MAGE_REPO_USER')]) {
        def composerAuth = """{
            "http-basic": {
                "repo.magento.com": {
                    "username": "${MAGE_REPO_USER}",
                    "password": "${MAGE_REPO_PASS}"
                }
            }
        }""";
        // do some stuff here that uses composerAuth
    }
}

I don't want to have to re-declare composerAuth every time, so I want to store the credentials in a global variable, so I can do something like:

script {
    // do some stuff here that uses global set composerAuth
}

I've tried putting it in the environment section:

environment {
    DOCKER_IMAGE_NAME = "magento2_website_sibo"
    withCredentials([usernamePassword(credentialsId: 'COMPOSER_REPO_MAGENTO', passwordVariable: 'MAGE_REPO_PASS', usernameVariable: 'MAGE_REPO_USER')]) {
        COMPOSER_AUTH = """{
            "http-basic": {
                "repo.magento.com": {
                    "username": "${MAGE_REPO_USER}",
                    "password": "${MAGE_REPO_PASS}"
                }
            }
        }""";
    }
}

But (groovy noob as I am) that doesn't work. So what's the best approach on setting a globally accessible variable with credentials but only have to declare it once?

Answer 1

You can use credentials helper method of the environment section. For "Username and passwrd" type of credentials it assigns 2 additional environment variables. Example:

environment {
  MAGE_REPO_CREDENTIALS = credentials('COMPOSER_REPO_MAGENTO')
  COMPOSER_AUTH = """{
      "http-basic": {
          "repo.magento.com": {
              "username": "${env.MAGE_REPO_CREDENTIALS_USR}",
              "password": "${env.MAGE_REPO_CREDENTIALS_PSW}"
          }
      }
  }"""
}

Read more

Answer 2

Here is how you can accomplish that

pipeline {
    agent any
    stages {
        stage('first') {
            steps {
                script {
                    withCredentials([usernamePassword(credentialsId: 'COMPOSER_REPO_MAGENTO', passwordVariable: 'MAGE_REPO_PASS', usernameVariable: 'MAGE_REPO_USER')]) {
                        def user = env.MAGE_REPO_USER
                        def password = env.MAGE_REPO_PASS
                        //Initializing a global variable. Notice there is no def here 
                        composerAuth = """{
                            "http-basic": {
                                "repo.magento.com": {
                                    "username": "${user}",
                                    "password": "${password}"
                                }
                            }
                        }"""
                    }
                }
            }
        }
        stage('second') {
            steps {
                script {
                    println composerAuth
                }
            }
        }
    }
}

Answer 3

I found this and it is helpful: Source: https://wiki.jenkins.io/display/JENKINS/Credentials+Binding+Plugin

   // Basic example
withCredentials([usernamePassword(credentialsId: 'amazon',
                     usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD')]) {
    //available as an env variable, but will be masked if you try to print it out any which way
    sh 'echo $PASSWORD'
    echo "${env.USERNAME}"
}

// You can also request multiple credentials in a single call
withCredentials([usernamePassword(credentialsId: 'amazon',
                     usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD'),
                 string(credentialsId: 'slack-url',
                     variable: 'SLACK_URL'),]) {
    sh 'echo $PASSWORD'
    echo "${env.SLACK_URL}"
}

// Older code might not use the new syntax (usernamePassword, string, ...) yet, and directly call the class:
withCredentials([[$class: 'UsernamePasswordMultiBinding', credentialsId: 'amazon',
                  usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD']]) {
    //available as an env variable, but will be masked if you try to print it out any which way
    sh 'echo $PASSWORD'
    echo "${env.USERNAME}"
}

Answer 4

After a lot of search (and struggle), i came up with an easy workaround:

As better explained in the jenkins docs for Handling Credentials, when injecting a usernamePassword type credential into an environment variable named VAR_NAME, jenkins automatically generates two other variables ending with _USR and _PSW respectively for usernameVariable and passwordVariable parameters.

What i did was to inject my variables with the values from both USR and PSW new variables.

In @Giel Berkers case, it should be something like this:

environment {
    DOCKER_IMAGE_NAME = "magento2_website_sibo"
    COMPOSER_REPO_MAGENTO_CREDENTIAL = credentials('COMPOSER_REPO_MAGENTO')
    COMPOSER_AUTH = """{
        "http-basic": {
            "repo.magento.com": {
                "username": "${COMPOSER_REPO_MAGENTO_CREDENTIAL_USR}",
                "password": "${COMPOSER_REPO_MAGENTO_CREDENTIAL_PSW}"
            }
        }
    }""";
}