logger.md

Logger

In kooper everything is pluggable, this is because it embraces dependency injection in all of its components, that's why you can plug your own logger, the only requirement is to implement the Logger interface.

type Logger interface {
    Infof(format string, args ...interface{})
    Warningf(format string, args ...interface{})
    Errorf(format string, args ...interface{})
}

Although it comes with some loggers by default.

Available loggers

If you don't need a custom logger, you can pass

• Dummy: doesn't log anything (mainly for the tests).
• Glog: Uses Glog logger (this logger is a global logger)
• Std: Uses default go logger (this logger is a global logger)

Use a logger in the controller

import (
    "github.com/spotahome/kooper/log"
    ...
)
...

log := &log.Glog{}

...

ctrl := controller.NewSequential(30*time.Second, hand, retr, m, log)
...

Note: if you pass nil as the logger to the controller it will use log.Std logger by default