text: // Copyright 2015 CoreOS, Inc.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  //
  // +build !windows
  
  package capnslog
  
  import (
  	"io"
  	"os"
  	"syscall"
  )
  
  // Here's where the opinionation comes in. We need some sensible defaults,
  // especially after taking over the log package. Your project (whatever it may
  // be) may see things differently. That's okay; there should be no defaults in
  // the main package that cannot be controlled or overridden programatically,
  // otherwise it's a bug. Doing so is creating your own init_log.go file much
  // like this one.
  
  func init() {
  	initHijack()
  
  	// Go `log` package uses os.Stderr.
  	SetFormatter(NewDefaultFormatter(os.Stderr))
  	SetGlobalLogLevel(INFO)
  }
  
  func NewDefaultFormatter(out io.Writer) Formatter {
  	if syscall.Getppid() == 1 {
  		// We're running under init, which may be systemd.
  		f, err := NewJournaldFormatter()
  		if err == nil {
  			return f
  		}
  	}
  	return NewPrettyFormatter(out, false)
  }
  