OpenTelemetry to Honeycomb Forwarder

A lightweight service that forwards OpenTelemetry events to Honeycomb.io.

Overview

This service acts as a bridge between applications sending OpenTelemetry-formatted telemetry data and the Honeycomb.io observability platform. It receives OpenTelemetry events via an HTTP endpoint and forwards them to Honeycomb's API.

Features

• Accepts OpenTelemetry-formatted events via HTTP
• Transforms events to Honeycomb's format
• CORS support for cross-origin requests
• Configurable via environment variables

Configuration

The service is configured using environment variables:

Variable	Description	Default
PORT	The port the server will listen on	8080
HONEYCOMB_API_KEY	Your Honeycomb API key	(required)
HONEYCOMB_DATASET	The Honeycomb dataset to send events to	cli-telemetry
HONEYCOMB_API_URL	Custom Honeycomb API URL (optional)	(Honeycomb default)

Getting Started

Prerequisites

• Go 1.x

Running the Service

1. Set required environment variables:

export HONEYCOMB_API_KEY=your-api-key

2. Build and run the service:

go build
./otel-honeycomb-forwarder

API

POST /telemetry/event

Accepts OpenTelemetry events and forwards them to Honeycomb.

Request Body: An OpenTelemetry event with the following structure:

{
  "name": "event_name",
  "timeUnixNano": 1639083272000000000,
  "traceId": "trace-id",
  "spanId": "span-id",
  "severityText": "INFO",
  "severityNumber": 9,
  "body": "Event message or data",
  "attributes": {
    "key1": "value1",
    "key2": "value2"
  },
  "resource": {
    "service.name": "my-service"
  }
}

License

This project is licensed under the MIT License. See the LICENSE file for details.