http-template.md

HTTP Template

v3.2 and after

HTTP Template is a type of template which can execute HTTP Requests. The body of the response is automatically exported into the result output parameter.

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: http-template-
spec:
  entrypoint: main
  templates:
    - name: main
      steps:
        - - name: get-google-homepage
            template: http
            arguments:
              parameters: [{name: url, value: "https://www.google.com"}]
    - name: http
      inputs:
        parameters:
          - name: url
      http:
        timeoutSeconds: 20 # Default 30
        url: "{{inputs.parameters.url}}"
        method: "GET" # Default GET
        headers:
          - name: "x-header-name"
            value: "test-value"
        # Template will succeed if evaluated to true, otherwise will fail
        # Available variables:
        #  request.body: string, the request body
        #  request.headers: map[string][]string, the request headers
        #  response.url: string, the request url
        #  response.method: string, the request method
        #  response.statusCode: int, the response status code
        #  response.body: string, the response body
        #  response.headers: map[string][]string, the response headers
        successCondition: "response.body contains \"google\"" # available since v3.3
        body: "test body" # Change request body

Argo Agent RBAC

HTTP and Plugin Templates use the Argo Agent, which executes the requests independently of the controller. The Agent and the Workflow Controller communicate through the WorkflowTaskSet CRD, which is created for each running Workflow that requires the use of the Agent.

In order to use the Argo Agent, you will need to ensure that you have added the appropriate workflow RBAC to add an agent role with to Argo Workflows. An example agent role can be found in the quick-start manifests.