Colored

This package implements the gen.LoggerBehavior interface and provides the ability to output log messages to standard output with color highlighting.

Below is a demonstration of log messages (from nodes, processes, and meta-processes) with different logging levels:

Format

<time> <level> <log source> [process name] [process behavior]: <log message>

When logging, the package also highlights in color the types gen.Atom, gen.PID, gen.ProcessID, gen.Ref, gen.Alias, gen.Event.

Available options

Sets the format for the timestamp of log messages. You can use any existing format (see time package) or define your own. By default, the time is displayed in nanoseconds

• ShortLevelName Displays the shortened name of the log level

• IncludeBehavior Includes the name of the process behavior in the log message

• IncludeName includes the registered name of the process in the log message

Example

package main

import (
	"ergo.services/ergo"
	"ergo.services/ergo/gen"

	"ergo.services/logger/colored"
)

func main() {
	logger := gen.Logger{
		Name:   "colored",
		Logger: colored.CreateLogger(colored.Options{}),
	}

	nopt := gen.NodeOptions{}
	nopt.Log.Loggers = []gen.Logger{logger}
	
	// disable default logger to get rid of duplicating log-messages
	nopt.Log.DefaultLogger.Disable = true

	node, err := ergo.StartNode("demo@localhost", nopt)
	if err != nil {
		panic(err)
	}
	node.Log().Warning("Hello World!!!")
	node.Wait()
}

This package is not intended for use with intensive logging and may impact node performance. For log messages with the level gen.LogLevelTrace, color highlighting is applied only to the timestamp and the source of the log message; color highlighting is turned off for the body of the log message