Artifact Downloading

Stage: Download JAR with Credentials¶

This Jenkins pipeline stage is designed to securely download a .jar file from a URL requiring authentication. It uses credentials stored in Jenkins' credentials store to handle the authentication.

Pipeline Code¶

stage('Download JAR with Credentials') {
  steps {
    script {
      withCredentials([usernamePassword(credentialsId: 'nexus-cred', passwordVariable: 'pass', usernameVariable: 'user')]) {
        def jarUrl = 'https://example.com/path/to/your.jar'
        sh "curl -u $user:$pass -O $jarUrl"
      }
    }
  }
}

Key Components¶

1. withCredentials Block
2. Securely retrieves credentials stored in Jenkins.

3. Parameters:

   • credentialsId: The unique ID of the credentials stored in Jenkins.
   • usernameVariable: The environment variable (user) used to store the username.
   • passwordVariable: The environment variable (pass) used to store the password.

4. jarUrl

5. The URL of the .jar file to be downloaded.

6. sh Step

7. Executes a shell command to download the JAR file using curl.
8. Options:
   • -u $user:$pass: Passes the username and password for authentication.
   • -O: Saves the file with its original name.