logrotate

README

#logrotate file

logrotated can be configured to send a SIGHUP signal to a process after rotating it's logs. This library reopens the underlying os.File when a SIGHUP is received by the app.

###Example This is will enable all log calls to output to the log file without interruption when logrotated rotates the file.

logfile, err := logrotate.NewFile("/log/path/here")
if err != nil {
	log.Fatal(err)
}

log.SetOutput(logfile)

ref: http://linux.die.net/man/8/logrotate

Documentation

Index

• type File
  • func NewFile(path string) (*File, error)
  • func (lr *File) Close() error
  • func (lr *File) Write(b []byte) (int, error)

Types

type File

type File struct {
	*os.File
	// contains filtered or unexported fields
}

File wraps an *os.File and listens for a 'SIGHUP' signal from logrotated so it can reopen the new file.

func NewFile

func NewFile(path string) (*File, error)

NewFile creates a File pointer and kicks off the goroutine listening for SIGHUP signals.

func (*File) Close

func (lr *File) Close() error

Close will stop the goroutine listening for SIGHUP signals and then close the underlying os.File.

func (*File) Write

func (lr *File) Write(b []byte) (int, error)

Write will write to the underlying file. It uses a sync.Mutex to ensure uninterrupted writes during logrotates.