apiVersion: tekton.dev/v1alpha1
kind: Task
metadata:
  name: jib-gradle
  namespace: tekton-pipeline-1
spec:
  inputs:
    params:
    - name: build-type
      description: build type used to check to actually execute this step
      default: gradle
    - name: DIRECTORY
      description: The directory containing the app, relative to the source repository root
      default: .
    - name: CACHE
      description: The name of the volume for caching Gradle artifacts, local Maven repository, and base image layers
      default: empty-dir-volume
    - name: INSECUREREGISTRY
      description: Whether to allow insecure registry
      default: "false"
    resources:
    - name: source
      type: git
  outputs:
    resources:
    - name: image
      type: image
  steps:
  - name: build-and-push
    image: gcr.io/cloud-builders/gradle
    script: |
      #!/bin/sh
      if [ $(inputs.params.build-type) != gradle]
      then
        exit 0
      fi
      set -o errexit
      # Adds Gradle init script that applies the Jib Gradle plugin.
      echo "initscript {
              repositories { maven { url 'https://plugins.gradle.org/m2' } }
              dependencies { classpath 'gradle.plugin.com.google.cloud.tools:jib-gradle-plugin:+' }
            }
            rootProject {
              afterEvaluate {
                if (!project.plugins.hasPlugin('com.google.cloud.tools.jib')) {
                  project.apply plugin: com.google.cloud.tools.jib.gradle.JibPlugin
                }
              }
            }" > /tekton/home/init-script.gradle
      # Runs the Gradle Jib build.
      gradle jib \
        --stacktrace --console=plain \
        --init-script=/tekton/home/init-script.gradle \
        -Duser.home=/tekton/home \
        -Dgradle.user.home=/tekton/home/.gradle \
        -Djib.allowInsecureRegistries=$(inputs.params.INSECUREREGISTRY) \
        -Djib.to.image=$(outputs.resources.image.url)
      exit 0
    workingDir: /workspace/source/$(inputs.params.DIRECTORY)
    volumeMounts:
    - name: $(inputs.params.CACHE)
      mountPath: /tekton/home/.gradle/caches
      subPath: gradle-caches
    - name: $(inputs.params.CACHE)
      mountPath: /tekton/home/.gradle/wrapper
      subPath: gradle-wrapper
    - name: $(inputs.params.CACHE)
      mountPath: /tekton/home/.m2
      subPath: m2-cache
    - name: $(inputs.params.CACHE)
      mountPath: /tekton/home/.cache
      subPath: jib-cache
    securityContext:
      runAsUser: 0

  volumes:
  - name: empty-dir-volume
    emptyDir: {}