API Gateway

This service acts as an API Gateway using YARP (Yet Another Reverse Proxy) to route traffic to various microservices.

Features

• Routing API requests to appropriate microservices
• Distributed tracing with OpenTelemetry
• Metrics collection with OpenTelemetry
• Integration with Jaeger for visualizing traces

Configuration

OpenTelemetry

The application is configured to export telemetry data to Jaeger. The configuration is managed through:

1. Environment variables:

   • OTEL_EXPORTER_ENDPOINT: The endpoint for the OpenTelemetry collector (default: http://localhost:4317)

2. Application settings (appsettings.json):

   "OpenTelemetry": {
     "ServiceName": "ApiGateway",
     "EnableConsoleExporter": false,
     "OtlpExporter": {
       "Endpoint": "http://localhost:4317",
       "Protocol": "Grpc"
     }
   }

Running the Application

Docker Compose

cd ApiGatewayApp
docker-compose up

After starting, you can:

• Access the API Gateway at http://localhost:8080
• Access Swagger UI at http://localhost:8080/swagger
• View traces in Jaeger UI at http://localhost:16686

Production Deployment with Render.com

This application includes a render.yaml Blueprint file for easy deployment to Render.com.