Grafana alert RocketChat webhook script

script.js

// Rocketchat incoming grafana webhook script
// See the following links for some documentation:
//   * Grafana outgoing format: https://grafana.com/docs/grafana/latest/alerting/manage-notifications/webhook-notifier/
//   * Rocketchat incoming message format: https://developer.rocket.chat/reference/api/rest-api/endpoints/core-endpoints/chat-endpoints/postmessage#attachments-detail

class Script {
  process_incoming_request({ request }) {
    var attachments = [];
    
    request.content.alerts.map(function(item) {        
      attachments.push({ 
            "image_url" : item.imageURL,
        });
    });
    return {
      content:{
        text: request.content.message,
        attachments: attachments
       }
    };
  }
}