groovy - Jenkins pipeline - How to iterate through a list

Groovy - Jenkins pipeline - How to iterate through a list

In Jenkins Pipeline, you can iterate through a list using a for loop or the each method. Here's an example using both approaches:

Assuming you have a list of items:

def myItems = ['item1', 'item2', 'item3']

Using for Loop:

def myItems = ['item1', 'item2', 'item3'] for (item in myItems) { echo "Processing item: ${item}" // Add your logic here for each item }

Using each Method:

def myItems = ['item1', 'item2', 'item3'] myItems.each { item -> echo "Processing item: ${item}" // Add your logic here for each item }

Both approaches will iterate through the list (myItems) and perform the specified logic for each item. Choose the one that you find more readable or suitable for your use case.

Here's a complete example in the context of a Jenkins Pipeline:

pipeline { agent any stages { stage('Iterate through List') { steps { script { def myItems = ['item1', 'item2', 'item3'] for (item in myItems) { echo "Processing item: ${item}" // Add your logic here for each item } // Alternatively, using each method myItems.each { item -> echo "Processing item: ${item}" // Add your logic here for each item } } } } } }

Replace the // Add your logic here for each item comments with the actual logic you want to perform for each item in the list.

Examples

  1. "Jenkins pipeline iterate through a list"

    • Code:
      def myList = [1, 2, 3, 4, 5] myList.each { item -> echo "Processing item: ${item}" // Add your logic here for each item }
    • Description: Uses the each method to iterate through each item in the list and perform actions within a Jenkins pipeline.

  2. "Jenkins declarative pipeline iterate over parameters"

    • Code:
      def myList = params.myList myList.each { item -> echo "Processing item: ${item}" // Add your logic here for each item }
    • Description: Retrieves a list from pipeline parameters and iterates through it using the each method.

  3. "Jenkins scripted pipeline loop through array"

    • Code:
      def myList = [1, 2, 3, 4, 5] for (item in myList) { echo "Processing item: ${item}" // Add your logic here for each item }
    • Description: Utilizes a traditional for loop to iterate through each item in the list within a Jenkins scripted pipeline.

  4. "Jenkins pipeline iterate through stages dynamically"

    • Code:
      def stageNames = ['Build', 'Test', 'Deploy'] stageNames.each { stageName -> stage(stageName) { echo "Running ${stageName} stage" // Add your stage-specific logic here } }
    • Description: Dynamically creates Jenkins pipeline stages based on a list of stage names.

  5. "Jenkins pipeline iterate through matrix"

    • Code:
      matrix { axes { axis { name 'PLATFORM' values 'Linux', 'Windows', 'Mac' } } stages { stage('Build') { steps { echo "Building for ${PLATFORM}" // Add your platform-specific build logic here } } } }
    • Description: Uses a matrix to iterate through different values of an axis in a Jenkins pipeline.

  6. "Jenkins pipeline iterate through file list"

    • Code:
      def fileList = findFiles(glob: 'src/*.txt') fileList.each { file -> echo "Processing file: ${file}" // Add your logic for each file }
    • Description: Uses the findFiles step to retrieve a list of files and then iterates through them in a Jenkins pipeline.

  7. "Jenkins pipeline iterate through map"

    • Code:
      def myMap = ['key1': 'value1', 'key2': 'value2', 'key3': 'value3'] myMap.each { key, value -> echo "Processing entry: ${key}=${value}" // Add your logic for each key-value pair }
    • Description: Iterates through each key-value pair in a map within a Jenkins pipeline.

  8. "Jenkins pipeline iterate through parallel stages"

    • Code:
      parallel( 'Stage1': { echo 'Running Stage1' // Add your logic for Stage1 }, 'Stage2': { echo 'Running Stage2' // Add your logic for Stage2 } )
    • Description: Uses the parallel step to run multiple stages concurrently in a Jenkins pipeline.

  9. "Jenkins scripted pipeline iterate through list of jobs"

    • Code:
      def jobNames = ['Job1', 'Job2', 'Job3'] jobNames.each { jobName -> build job: jobName, wait: false }
    • Description: Initiates builds for a list of Jenkins jobs using the build step in a scripted pipeline.

  10. "Jenkins pipeline iterate through node labels"

    • Code:
      def nodeLabels = ['linux', 'windows', 'mac'] nodeLabels.each { label -> node(label) { echo "Running on node with label: ${label}" // Add your node-specific logic here } }
    • Description: Iterates through different node labels and runs stages on nodes with specific labels in a Jenkins pipeline.

More Tags

windows-scripting odata indexoutofboundsexception filelist auto-versioning transition facebook-fql selenium-chromedriver react-cookie fragment

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