helm-template.yaml

# Copyright 2020 The Tekton Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: deploy-helm-chart
spec:
  params:
    - name: namespace
      description: Namespace to deploy to in the target cluster
    - name: chartName
      description: The name of the chart to be deployed
    - name: chartVersion
      description: The version of the chart to be deployed
      default: latest
    - name: chartRepo
      description: The repo from where to install the chart
      default: https://kubernetes-charts.storage.googleapis.com/
    - name: chartParams
      description: A comma separated list of key/values
      default: ""
    - name: preDeployResources
      description: >-
        Some charts require resources to be deployed firt, usually CRDs.
        When provided this should be the URL to a YAML file with resources.
      default: ""
  workspaces:
    - name: targetCluster
      description: kubeconfig of the target Cluster/ServiceAccount
  stepTemplate:
    env:
    - name: KUBECONFIG
      value: $(workspaces.targetCluster.path)/kubeconfig
    - name: CHART_NAME
      value: $(params.chartName)
    - name: CHART_VERSION
      value: $(params.chartVersion)
    - name: CHART_REPO
      value: $(params.chartRepo)
    - name: CHART_PARAMS
      value: $(params.chartParams)
    - name: NAMESPACE
      value: $(params.namespace)
    - name: PRE_DEPLOY_RESOURCES
      value: $(params.preDeployResources)
  steps:
    - name: pre-deploy-from-url
      image: gcr.io/tekton-releases/dogfooding/kubectl
      script: |
        #!/bin/sh
        set -ex

        # Check if we have something to be done
        if [ "${PRE_DEPLOY_RESOURCES}" == "" ]; then
          echo "No pre-deploy resources to deploy, continue"
          exit 0
        fi

        # Apply the resources to the same namespace
        kubectl apply \
          --validate=false \
          -n ${NAMESPACE} \
          -f ${PRE_DEPLOY_RESOURCES}

    - name: helm-deploy
      image: alpine/helm:3.1.2
      script: |
        #!/bin/sh
        set -ex
        echo "Running install/upgrade"
        echo "with ${CHART_PARAMS}"
        helm upgrade \
          --debug \
          ${CHART_NAME}-tektoncd-maintained \
          ${CHART_NAME} \
          --install \
          --version ${CHART_VERSION} \
          --repo ${CHART_REPO} \
          --namespace=${NAMESPACE} \
          --set "${CHART_PARAMS}" \
          --wait --timeout 5m
---
apiVersion: triggers.tekton.dev/v1beta1
kind: TriggerTemplate
metadata:
  name: deploy-helm-chart
spec:
  params:
  - name: namespace
    description: Namespace to deploy to in the target cluster
  - name: clusterResource
    description: Name of the cluster resource that points to the target cluster
  - name: chartName
    description: The name of the chart to be deployed
  - name: chartVersion
    description: The version of the chart to be deployed
    default: latest
  - name: chartRepo
    description: The repo from where to install the chart
    default: https://kubernetes-charts.storage.googleapis.com/
  - name: chartDescription
    description: Used for a descriptive TaskRun name
  - name: chartParams
    description: A comma separated list of key/values
    default: ""
  - name: preDeployResources
    description: >-
      Some charts require resources to be deployed first, usually CRDs.
      When provided this should be the URL to a YAML file with resources.
    default: ""
  resourcetemplates:
  - apiVersion: tekton.dev/v1beta1
    kind: TaskRun
    metadata:
      generateName: deploy-helm-$(tt.params.chartDescription)-
    spec:
      taskRef:
        name: deploy-helm-chart
      params:
      - name: chartName
        value: $(tt.params.chartName)
      - name: chartVersion
        value: $(tt.params.chartVersion)
      - name: chartRepo
        value: $(tt.params.chartRepo)
      - name: chartParams
        value: $(tt.params.chartParams)
      - name: namespace
        value: $(tt.params.namespace)
      - name: preDeployResources
        value: $(tt.params.preDeployResources)
      workspaces:
        - name: targetCluster
          secret:
            secretName: tektoncd-$(tt.params.clusterResource)