logrus/hooks/writer/README.md

# Writer Hooks for Logrus

Send logs of given levels to any object with `io.Writer` interface.

## Usage

If you want for example send high level logs to `Stderr` and
logs of  normal execution to `Stdout`, you could do it like this:

```go
package main

import (
	"io/ioutil"
	"os"

	log "git.internal/re/logrus"
	"git.internal/re/logrus/hooks/writer"
)

func main() {
	log.SetOutput(ioutil.Discard) // Send all logs to nowhere by default

	log.AddHook(&writer.Hook{ // Send logs with level higher than warning to stderr
		Writer: os.Stderr,
		LogLevels: []log.Level{
			log.PanicLevel,
			log.FatalLevel,
			log.ErrorLevel,
			log.WarnLevel,
		},
	})
	log.AddHook(&writer.Hook{ // Send info and debug logs to stdout
		Writer: os.Stdout,
		LogLevels: []log.Level{
			log.InfoLevel,
			log.DebugLevel,
		},
	})
	log.Info("This will go to stdout")
	log.Warn("This will go to stderr")
}
```