Cloudflare

This guide walks you through setting up Application Performance Monitoring (APM) on applications deployed through Cloudflare Workers. These instructions can also be found on the Installation page in your Middleware Account. View demo code here.

​

Prerequisites

• Wrangler version 2.2.2, you can check your Wrangler version with the following command.

wrangler version

​

Step 1: Install Middleware Worker Package

Run the following command in your terminal.

npm i @middleware.io/agent-apm-worker 

​

Step 2: Import Tracker

import { init,track } from '@middleware.io/agent-apm-worker';

​

Step 3: Initialize Tracker

The access token is your account key, which can be found on the Installation page. To watch instrumented logs in the terminal, set consoleLogEnabled: true.

init({
   projectName:"{APM-PROJECT-NAME}",
   serviceName:"{APM-SERVICE-NAME}",
   accountKey:"{ACCOUNT_KEY}",
   target:"https://{ACCOUNT-UID}.middleware.io",
   consoleLogEnabled:false,
});

​

Step 4: Track Requests with the Middleware SDK

const sdk = track(request, ctx);
sdk.sendResponse(response);

​

Step 5: Enable Logging

// sdk.logger.SEVERITY( MESSAGE, KEY-VALUE PAIRS )

sdk.logger.error("error test")
sdk.logger.error("error with attributes",{"log.file.name":"error.log"})
sdk.logger.info("info test")
sdk.logger.debug("debug test")
sdk.logger.warn("warn test")