Google Cloud Function to parse and send a Stackdriver Incident to Google Chat (Hangouts)

index.js

/*
Example Request

{
   "incident":{
      "incident_id":"0.123",
      "resource_id":"",
      "resource_name":"some-resource-name",
      "resource":{
         "type":"gce_instance",
         "labels":{
            "instance_id":"123",
            "zone":"some-zone-a"
         }
      },
      "started_at":1579625776,
      "policy_name":"VM instance",
      "condition_name":"GCE VM Instance - CPU utilization",
      "url":"https://app.google.stackdriver.com/incidents/123?project=my-project",
      "state":"open",
      "ended_at":null,
      "summary":"CPU utilization for some-resource with metric labels [...] is above the threshold of 0.01 with a value of 0.027."
   },
   "version":"1.2"
}
*/


exports.sendToChat = function sendToChat (req, res) {
    
    var uri = 'https://chat.googleapis.com/v1/spaces/[...]';
   
    var body = {
      "cards":[
        {
          "header":{
            "title":"Stackdriver Monitoring Alert"
          },
          "sections":[
            {
              "widgets":[
                {
                  "keyValue":{
                    "topLabel":"Summary",
                    "content":req.body.incident.summary,
                    "contentMultiline":"true"
                  }
                },
                {
                  "keyValue":{
                    "topLabel":"Policy",
                    "content":req.body.incident.policy_name
                  }
                },
                {
                  "keyValue":{
                    "topLabel":"Condition",
                    "content":req.body.incident.condition_name
                  }
                },
                {
                  "keyValue":{
                    "topLabel":"Resource",
                    "content":req.body.incident.resource_name + "   (" + req.body.incident.resource_id + ")"
                  }
                }
              ]
            },
            {
              "widgets":[
                {
                  "buttons":[
                    {
                      "textButton":{
                        "text":"Show in Console",
                        "onClick":{
                          "openLink":{
                            "url":req.body.incident.url
                          }
                        }
                      }
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    };
  
    const axios = require('axios');  	

    axios.post(uri,body);    
};

package.json

{
  "dependencies": {
    "axios": "^0.19.1"
  }
}