README.md

nodejs-api

This example illustrates a nodejs API built with API Gateway and AWS Lambda, and instrumented with OpenTelemetry.

Synopsis

This is a simple API to manage blog posts with 2 end-points:

• POST /: Create a blog post. It expects as request body

{
  "title": "The blog post title",
  "content": "The content of the blog post"
}

• GET /{id}: Get a single blog post.

To illustrate how Baselime works, this app makes a few external calls:

• to DyanmoDB to save and retrieve blog posts.
• to https://jsonplaceholder.typicode.com to add illustration images to blog posts.

Demo

This app illustrates how to:

• Add auto-instrumentation to a AWS Lambda app with OpenTelemetry
• Send telemetry data to Baselime
• Add custom attributes and events to spans
• Create new spans
• Capture exceptions

Setup

Get your BASELIME_API_KEY and add it to your Lambda function env variables.

Deploy the app

Create blog post

curl $LAMBDA_URL  \
    -d '
{
  "title": "Hello, World!",
  "content": "Just Do It!"
}
'

Retrieve a blog post

curl $LAMBDA_URL 

Result

Visit the Baselime Web UI to visualise your logs, metrics and traces.