Method SetFormatter

middleware/accesslog/accesslog.go:670–690

SetFormatter sets a custom formatter to print the logs. Any custom output writers should be already registered before calling this method. Returns this AccessLog instance. Usage: ac.SetFormatter(&accesslog.JSON{Indent: " "})

(f Formatter)

// Usage:
// ac.SetFormatter(&accesslog.JSON{Indent: "    "})
func (ac *AccessLog) SetFormatter(f Formatter) *AccessLog {
	if ac.Writer == nil {
		panic("accesslog: SetFormatter called with nil Writer")
	}

	if f == nil {
		return ac
	}

	if flusher, ok := ac.formatter.(Flusher); ok {
		// PREPEND formatter flushes, they should run before destination's ones.
		ac.Flushers = append([]Flusher{flusher}, ac.Flushers...)
	}

	// Inject the writer (AccessLog) here, the writer
	// is protected with mutex.
	f.SetOutput(ac)

	ac.formatter = f
	return ac
}

// AddFields maps one or more log entries with values extracted by the Request Context.
// You can also add fields per request handler, look the `GetFields` package-level function.