pipelinerun-with-matrix-context-variables.yaml

apiVersion: tekton.dev/v1
kind: Task
metadata:
  name: validate-matrix-result-length
spec:
  params:
    - name: matrixlength
      type: string
  steps:
    - name: validate
      image: mirror.gcr.io/alpine
      args: ["$(params.matrixlength)"]
      script: |
        #!/usr/bin/env sh
        echo "Validating the length of the matrix context variable"
        echo "The length of the matrix is 3"
        if [ "$(params.matrixlength)" != 3 ]; then
          echo "Error: expected matrix to have the length 3 but has length $(params.matrixlength)"
          exit 1
        fi
        echo "Done validating the length of the matrix context variable"
---
apiVersion: tekton.dev/v1
kind: Task
metadata:
  name: validate-matrix-results-length
spec:
  params:
    - name: matrixresultslength-1
      type: string
    - name: matrixresultslength-2
      type: string
  steps:
    - name: validate
      image: mirror.gcr.io/alpine
      script: |
        #!/usr/bin/env sh
        echo "Validating the length of the matrix results context variable"
        echo "The length of the matrix results are $(params.matrixresultslength-1) and $(params.matrixresultslength-2)"
        if [ "$(params.matrixresultslength-1)" != 3 ]; then
          echo "Error: expected matrix results to have the length 3 but has length $(params.matrixresultslength-1)"
          exit 1
        fi
        if [ "$(params.matrixresultslength-2)" != 1 ]; then
          echo "Error: expected matrix results to have the length 1 but has length $(params.matrixresultslength-2)"
          exit 1
        fi
        echo "Done validating the length of the matrix context variable"
---
apiVersion: tekton.dev/v1
kind: Task
metadata:
  name: taskwithresults
spec:
  params:
    - name: IMAGE
    - name: DIGEST
      default: ""
  results:
    - name: IMAGE-DIGEST
    - name: IMAGE-URL
  steps:
    - name: produce-results
      image: mirror.gcr.io/bash
      script: |
        #!/usr/bin/env bash
        echo "Building image for $(params.IMAGE)"
        echo -n "$(params.DIGEST)" | sha256sum | tee $(results.IMAGE-DIGEST.path)
        if [ -z $(params.DIGEST) ]; then
          echo -n "$(params.DIGEST)" | sha256sum | tee $(results.IMAGE-URL.path)
        fi
---
apiVersion: tekton.dev/v1
kind: PipelineRun
metadata:
  generateName: matrix-context-variables-
spec:
  taskRunTemplate:
    serviceAccountName: "default"
  pipelineSpec:
    tasks:
      - name: matrix-emitting-results
        matrix:
          include:
            - name: build-1
              params:
                - name: IMAGE
                  value: image-1
                - name: DIGEST
                  value: path/to/Dockerfile1
            - name: build-2
              params:
                - name: IMAGE
                  value: image-2
                - name: DIGEST
                  value: path/to/Dockerfile2
            - name: build-3
              params:
                - name: IMAGE
                  value: image-3
        taskRef:
          name: taskwithresults
          kind: Task
      - name: matrixed-echo-length
        runAfter:
          - matrix-emitting-results
        params:
          - name: matrixlength
            value: $(tasks.matrix-emitting-results.matrix.length)
        taskRef:
          name: validate-matrix-result-length
          kind: Task
      - name: matrixed-echo-results-length
        runAfter:
          - matrix-emitting-results
        params:
          - name: matrixresultslength-1
            value: $(tasks.matrix-emitting-results.matrix.IMAGE-DIGEST.length)
          - name: matrixresultslength-2
            value: $(tasks.matrix-emitting-results.matrix.IMAGE-URL.length)
        taskRef:
          name: validate-matrix-results-length
          kind: Task