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Mesmer Example Application

Example application using Akka HTTP and Akka Persistence with Mesmer instrumentation.

Setup

Run docker-compose up in the docker directory.

This will set up everything needed by the application:

  • PostgreSQL database with Akka Persistence Journal
  • OpenTelemetry Collector - that will receive metrics from the application
  • Prometheus - that will receive the metrics from the collector

Run the application

To run the application with default settings:

sbt "project example" runWithAgent

Call the endpoints

You can now interact with the application to generate some traffic and metrics:

  1. Get account balance:
curl -X GET http://localhost:8080/api/v1/account/{UUID}/balance
  1. Deposit funds:
curl -X POST http://localhost:8080/api/v1/account/{UUID}/deposit/100
  1. Withdraw funds:
curl -X POST http://localhost:8080/api/v1/account/{UUID}/withdraw/100

If the account with the given UUID doesn't exist, it will be automatically created.