1. Docs
  2. Send Data to Honeycomb
  3. Logs
  4. OpenTelemetry
  5. SDKs
  6. Go Examples

Examples: Send OpenTelemetry Logs with the OpenTelemetry Go SDK

Note
Logs support in the OpenTelemetry Go SDK is currently experimental and is subject to change. Refer to the status for each language.

Send OpenTelemetry Logs from a Go Application to Honeycomb or an OpenTelemetry Collector 

This example uses the OpenTelemetry Go SDK and the slog instrumentation to create log entries, and send them to Honeycomb or an OpenTelemetry Collector.

Acquire Dependencies 

First, install the OpenTelemetry API, SDK, and OTLP exporter packages:

go get \
  go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp \
  go.opentelemetry.io/contrib/bridges/otelslog

Configure 

Next, create and configure the logger providers during application setup:

package main

import (
  "context"

  "go.opentelemetry.io/contrib/bridges/otelslog"
  "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp"
  "go.opentelemetry.io/otel/log/global"
  "go.opentelemetry.io/otel/sdk/log"
)

func main() {
  ctx := context.Background()

  // Create the OTLP log exporter that sends logs to configured destination
  logExporter, err := otlploghttp.New(ctx)
  if err != nil {
    panic("failed to initialize exporter")
  }

  // Create the logger provider
  lp := log.NewLoggerProvider(
    log.WithProcessor(
      log.NewBatchProcessor(logExporter),
    ),
  )

  // Ensure the logger is shutdown before exiting so all pending logs are exported
  defer lp.Shutdown(ctx)

  // Set the logger provider globally
  global.SetLoggerProvider(lp)

  // Instantiate a new slog logger
  logger := otelslog.NewLogger()

  // You can use the logger directly anywhere in your app now
  logger.Debug("Something interesting happened")
}

Run 

Finally, to send logs to Honeycomb, run your application with environment variables to set the service name and configure the exporter:

OTEL_SERVICE_NAME="my-service" \
  OTEL_EXPORTER_OTLP_ENDPOINT="https://api.honeycomb.io" \
  OTEL_EXPORTER_OTLP_HEADERS="x-honeycomb-team=<your-api-key>" \
  go run app.go

Alternatively, to send logs to an OpenTelemetry collector, use these environment variables:

OTEL_SERVICE_NAME="my-service" \
  OTEL_EXPORTER_OTLP_ENDPOINT="my-collector:4317" \
  OTEL_EXPORTER_OTLP_INSECURE=true \
  go run app.go
On this page: