Triggers

A Trigger is resource that combines TriggerTemplate, TriggerBindings and interceptors. The Trigger is processed by EventListener which referenced it when it receives an incoming.

• Triggers
  • Syntax
    • template

Syntax

To define a configuration file for an Trigger resource, you can specify the following fields:

• Required:
  • apiVersion - Specifies the API version, for example triggers.tekton.dev/v1alpha1.
  • kind - Specifies the Trigger resource object.
  • metadata - Specifies data to uniquely identify the Trigger resource object, for example a name.
  • spec - Specifies the configuration information for your Trigger resource object. The spec include:
    • [bindings] - (Optional) A list of bindings to use. Can either be a reference to existing TriggerBinding resources or embedded name/value pairs.
    • [template] - (Optional) Either a reference to a TriggerTemplate object or an embedded TriggerTemplate spec.
    • interceptors - (Optional) list of interceptors to use
    • [serviceAccountName] - (Optional) Specifies the ServiceAccount provided to EventListener by Trigger to create resources

apiVersion: triggers.tekton.dev/v1alpha1
kind: Trigger
metadata:
  name: trigger
spec:
  interceptors:
    - cel:
        filter: "header.match('X-GitHub-Event', 'pull_request')"
        overlays:
        - key: extensions.truncated_sha
          expression: "body.pull_request.head.sha.truncate(7)"
  bindings:
  - ref: pipeline-binding
  template:
    ref: pipeline-template

template

The template field inside a Trigger can either point to an existing TriggerTemplate object (using name) or the template spec can be embedded inside the Trigger using the spec field:

# Embedded Template Spec
triggers:
  - name: "my-trigger"
    template:
      spec: 
        params:
          - name: "my-param-name"
        resourceTemplates:
        - apiVersion: "tekton.dev/v1beta1"
          kind: TaskRun
          metadata:
            generateName: "pr-run-"
          spec:
            taskSpec:
              steps:
              - image: ubuntu
                script: echo "hello there"

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