How Can I Get More Detailed Stack Traces to Debug Errors Originating in Third-Party Go Libraries?

Getting Stack Traces Pointing to Actual Error Source

In a Go program, a panic can occur due to an error raised by a third-party library. However, the default stack trace often only provides the point where the panic occurred, not the actual source of the error.

To delve deeper into the error's origins, the error package offers a solution. By implementing the stackTracer interface, which exposes the StackTrace method, errors can be wrapped with additional information.

type stackTracer interface {
    StackTrace() errors.StackTrace
}

The following code demonstrates how to trace an error to its original source:

func main() {
    value, err := some3rdpartylib.DoSomething()
    if err != nil {
        // Wrap the error with stack trace information
        err = errors.WithStack(err)
        panic(err)
    }
}

In the unfortunate event of a panic, the stack trace will now include the error's actual source, enabling the developer to pinpoint the root cause.

Additionally, third-party libraries can further enhance error handling capabilities:

• eris: Provides readable stack traces and flexible error formatting.
• go-errors/errors: Adds stacktrace support to standard Go errors.
• palantir/stacktrace: Enables thorough error tracking.

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