How to Add Correlation IDs or Trace IDs to GoLang Logs Using the Slog Package?

Correlation ID or Trace ID in GoLang Slog Package

In GoLang, the slog package is popular for outputting JSON logs. However, users frequently require the ability to include a Correlation ID or Trace ID with their logs for better request tracking and debugging.

To achieve this with the slog package, you can follow these steps:

1. Extract the Trace ID from the request context. Assuming you are using an HTTP framework like net/http, the Trace ID can be obtained from the incoming request using the ctx.Value(...) method.
2. Create a new logger instance with the Trace ID as a field. You can use the With(...) method of the logger to create a new instance with additional fields.

<code class="go">traceId := ctx.Value("traceId")
newLogger := logger.With("traceId", traceId)</code>

3. Use the new logger to log messages. All messages logged using the newLogger will include the Trace ID field.

<code class="go">newLogger.Info("Testing testing")
newLogger.Info("Another testing")</code>

By following these steps, you can effectively add a Correlation ID or Trace ID to your logs using the slog package, making it easy to track and debug requests.

The above is the detailed content of How to Add Correlation IDs or Trace IDs to GoLang Logs Using the Slog Package?. For more information, please follow other related articles on the PHP Chinese website!