How to retrieve the URL of a Cloud Run service with Google Workflow?

I am used to using CI / CD architecture for my deployments on Cloud Run. Each time a deployment has taken place, I have to manually retrieve the URL that I send to my employees by email. My goal is to automate this task with Google Workflow. How do I retrieve the URL of a new service or the tag of a Cloud Run service with Google Workflow ?

Solution

Put together this returns the URL of a cloud run service

- initialize:
    assign:
      - project: ${sys.get_env("GOOGLE_CLOUD_PROJECT_NUMBER")}
      - zone: us-central1
      - service: service
- getCloudRunDetails:
    call: http.get
    args:
        url: ${"https://"+zone+"-run.googleapis.com/apis/serving.knative.dev/v1/namespaces/"+project+"/services/"+service+"?alt=json"}
        auth:
            type: OAuth2
    result: bitresult
- returnResult:
    return: ${bitresult.body.status.address.url}

the expected output is:

argument: 'null'
endTime: '2020-11-19T23:05:18.232772542Z'
name: projects/<edited>describeCloudRun/executions/<edited>   
result: '"https://<edited>uc.a.run.app"'
startTime: '2020-11-19T23:05:17.769640039Z'
state: SUCCEEDED
workflowRevisionId: 000020-b11

You have your value inside the result key.