request-and-notify.md

Use Workflow for request and notify

Apply the following workflow for request a specified URL first and then use the response as a message to your slack channel.

apiVersion: core.oam.dev/v1alpha1
kind: WorkflowRun
metadata:
  name: request-http
  namespace: default
spec:
  workflowSpec:
    steps:
    - name: request
      type: request
      properties:
        url: https://api.github.com/repos/kubevela/workflow
      outputs:
        - name: stars
          valueFrom: |
            import "strconv"
            "Current star count: " + strconv.FormatInt(response["stargazers_count"], 10)
    - name: notification
      type: notification
      inputs:
        - from: stars
          parameterKey: slack.message.text
      properties:
        slack:
          url:
            value: <your slack url>
    - name: failed-notification
      type: notification
      if: status.request.failed
      properties:
        slack:
          url:
            value: <your slack url>
          message:
            text: "Failed to request github"
            

Above workflow will send a request to the GitHub API and get the star count of the workflow repository as an output, then use the output as a message to send a notification to your Slack channel.

Apply the WorkflowRun, you can get a message from Slack like:

If you change the url to an invalid one, you will get a failed notification: