4.6. 在 Pipeline 中添加触发器

流程

1. 复制以下 TriggerBinding YAML 示例文件的内容并保存：

   apiVersion: triggers.tekton.dev/v1alpha1
   kind: TriggerBinding
   metadata:
     name: vote-app
   spec:
     params:
     - name: git-repo-url
       value: $(body.repository.url)
     - name: git-repo-name
       value: $(body.repository.name)
     - name: git-revision
       value: $(body.head_commit.id)

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2. 创建 TriggerBinding 资源：

   $ oc create -f <triggerbinding-yaml-file-name.yaml>

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   或者，您可以直接从 pipelines-tutorial Git 仓库创建 TriggerBinding 资源：

   $ oc create -f https://raw.githubusercontent.com/openshift/pipelines-tutorial/release-tech-preview-3/03_triggers/01_binding.yaml

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3. 复制以下 TriggerTemplate YAML 示例文件的内容并保存：

   apiVersion: triggers.tekton.dev/v1alpha1
   kind: TriggerTemplate
   metadata:
     name: vote-app
   spec:
     params:
     - name: git-repo-url
       description: The git repository url
     - name: git-revision
       description: The git revision
       default: release-tech-preview-3
     - name: git-repo-name
       description: The name of the deployment to be created / patched
   
     resourcetemplates:
     - apiVersion: tekton.dev/v1beta1
       kind: PipelineRun
       metadata:
         name: build-deploy-$(tt.params.git-repo-name)-$(uid)
       spec:
         serviceAccountName: pipeline
         pipelineRef:
           name: build-and-deploy
         params:
         - name: deployment-name
           value: $(tt.params.git-repo-name)
         - name: git-url
           value: $(tt.params.git-repo-url)
         - name: git-revision
           value: $(tt.params.git-revision)
         - name: IMAGE
           value: image-registry.openshift-image-registry.svc:5000/pipelines-tutorial/$(tt.params.git-repo-name)
         workspaces:
         - name: shared-workspace
           volumeClaimTemplate:
             spec:
               accessModes:
                 - ReadWriteOnce
               resources:
                 requests:
                   storage: 500Mi

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   模板指定一个卷声明模板，用于创建用于为工作空间定义存储卷的持久性卷声明。因此，您不需要创建持久性卷声明来提供数据存储。

4. 创建 TriggerTemplate 资源：

   $ oc create -f <triggertemplate-yaml-file-name.yaml>

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   另外，您还可以从 pipelines-tutorial Git 仓库直接创建 TriggerTemplate 资源：

   $ oc create -f https://raw.githubusercontent.com/openshift/pipelines-tutorial/release-tech-preview-3/03_triggers/02_template.yaml

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5. 复制以下 Trigger YAML 示例文件的内容并保存：

   apiVersion: triggers.tekton.dev/v1alpha1
   kind: Trigger
   metadata:
     name: vote-trigger
   spec:
     serviceAccountName: pipeline
     bindings:
       - ref: vote-app
     template:
        name: vote-app

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6. 创建 Trigger 资源：

   $ oc create -f <trigger-yaml-file-name.yaml>

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   另外，您还可以直接从 pipelines-tutorial Git 仓库创建 Trigger 资源：

   $ oc create -f https://github.com/openshift/pipelines-tutorial/blob/release-tech-preview-3/03_triggers/03_trigger.yaml

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7. 复制以下 EventListener YAML 示例文件的内容并保存：

   apiVersion: triggers.tekton.dev/v1alpha1
   kind: EventListener
   metadata:
     name: vote-app
   spec:
     serviceAccountName: pipeline
     triggers:
       - triggerRef: vote-trigger

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   或者，如果您还没有定义触发器自定义资源，将绑定和模板规格添加到 EventListener YAML 文件中，而不是引用触发器的名称：

   apiVersion: triggers.tekton.dev/v1alpha1
   kind: EventListener
   metadata:
     name: vote-app
   spec:
     serviceAccountName: pipeline
     triggers:
     - bindings:
       - ref: vote-app
       template:
         name: vote-app

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8. 创建 EventListener 资源：

   $ oc create -f <eventlistener-yaml-file-name.yaml>

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   或者，您可以直接从 pipelines-tutorial Git 仓库创建 EvenListener 资源：

   $ oc create -f https://raw.githubusercontent.com/openshift/pipelines-tutorial/release-tech-preview-3/03_triggers/04_event_listener.yaml

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9. 将 EventListener 服务公开为 OpenShift Container Platform 路由，使其可以被公开访问：

   $ oc expose svc el-vote-app

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