logger

package module
v0.0.0-...-dd2a26e Latest Latest
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 Go to latest Published: Jun 22, 2023 License: MIT Imports: 10 Imported by: 1

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Constants

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Variables

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Functions

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Types

type BackendSysLogWriter 

type BackendSysLogWriter struct {
	// contains filtered or unexported fields
}

BackendSysLogWriter a syslog writer to write the log to syslog in background

func NewBackendSysLogWriter 

func NewBackendSysLogWriter(network, raddr string, priority syslog.Priority, tag string) *BackendSysLogWriter

NewBackendSysLogWriter creates background syslog writer

func (*BackendSysLogWriter) Close 

func (bs *BackendSysLogWriter) Close() error

Close background write channel

func (*BackendSysLogWriter) Write 

func (bs *BackendSysLogWriter) Write(b []byte) (int, error)

Write data to the backend syslog writer

type BackgroundWriteCloser 

type BackgroundWriteCloser struct {
	io.WriteCloser
	// contains filtered or unexported fields
}

BackgroundWriteCloser write data in background

func NewBackgroundWriteCloser 

func NewBackgroundWriteCloser(writeCloser io.WriteCloser) *BackgroundWriteCloser

NewBackgroundWriteCloser creates new BackgroundWriteCloser object

func (*BackgroundWriteCloser) Close 

func (bw *BackgroundWriteCloser) Close() error

Close background data channel

func (*BackgroundWriteCloser) Write 

func (bw *BackgroundWriteCloser) Write(p []byte) (n int, err error)

Write data in background

type ChanLogger 

type ChanLogger struct {
	// contains filtered or unexported fields
}

ChanLogger write log message by channel

func NewChanLogger 

func NewChanLogger(channel chan []byte) *ChanLogger

NewChanLogger creates ChanLogger object

func (*ChanLogger) ClearAllLogFile 

func (l *ChanLogger) ClearAllLogFile() error

ClearAllLogFile returns error for ChanLogger

func (*ChanLogger) ClearCurLogFile 

func (l *ChanLogger) ClearCurLogFile() error

ClearCurLogFile returns error for ChanLogger

func (*ChanLogger) Close 

func (l *ChanLogger) Close() error

Close ChanLogger

func (*ChanLogger) ReadLog 

func (l *ChanLogger) ReadLog(offset int64, length int64) (string, error)

ReadLog returns error for ChanLogger

func (*ChanLogger) ReadTailLog 

func (l *ChanLogger) ReadTailLog(offset int64, length int64) (string, int64, bool, error)

ReadTailLog returns error for ChanLogger

func (*ChanLogger) SetPid 

func (l *ChanLogger) SetPid(pid int)

SetPid sets program pid

func (*ChanLogger) Write 

func (l *ChanLogger) Write(p []byte) (int, error)

Write log to the channel

type CompositeLogger 

type CompositeLogger struct {
	// contains filtered or unexported fields
}

CompositeLogger dispatch the log message to other loggers

func NewCompositeLogger 

func NewCompositeLogger(loggers []Logger) *CompositeLogger

NewCompositeLogger creates new CompositeLogger object (pool of loggers)

func (*CompositeLogger) AddLogger 

func (cl *CompositeLogger) AddLogger(logger Logger)

AddLogger adds logger to CompositeLogger pool

func (*CompositeLogger) ClearAllLogFile 

func (cl *CompositeLogger) ClearAllLogFile() error

ClearAllLogFile clear all the files of first logger in CompositeLogger pool

func (*CompositeLogger) ClearCurLogFile 

func (cl *CompositeLogger) ClearCurLogFile() error

ClearCurLogFile clear the first logger file in CompositeLogger pool

func (*CompositeLogger) Close 

func (cl *CompositeLogger) Close() (err error)

Close all loggers in CompositeLogger pool

func (*CompositeLogger) ReadLog 

func (cl *CompositeLogger) ReadLog(offset int64, length int64) (string, error)

ReadLog read log data from first logger in CompositeLogger pool

func (*CompositeLogger) ReadTailLog 

func (cl *CompositeLogger) ReadTailLog(offset int64, length int64) (string, int64, bool, error)

ReadTailLog tail the log data from first logger in CompositeLogger pool

func (*CompositeLogger) RemoveLogger 

func (cl *CompositeLogger) RemoveLogger(logger Logger)

RemoveLogger removes logger from CompositeLogger pool

func (*CompositeLogger) SetPid 

func (cl *CompositeLogger) SetPid(pid int)

SetPid sets pid to all loggers in CompositeLogger pool

func (*CompositeLogger) Write 

func (cl *CompositeLogger) Write(p []byte) (n int, err error)

Write dispatches log data to the loggers in CompositeLogger pool

type FileLogger 

type FileLogger struct {
	// contains filtered or unexported fields
}

FileLogger log program stdout/stderr to file

func NewFileLogger 

func NewFileLogger(name string, maxSize int64, backups int, logEventEmitter LogEventEmitter, locker sync.Locker) *FileLogger

NewFileLogger creates FileLogger object

func (*FileLogger) ClearAllLogFile 

func (l *FileLogger) ClearAllLogFile() error

ClearAllLogFile clears contents of all log files (re-open with truncate)

func (*FileLogger) ClearCurLogFile 

func (l *FileLogger) ClearCurLogFile() error

ClearCurLogFile clears contents (re-open with truncate) of current log file

func (*FileLogger) Close 

func (l *FileLogger) Close() error

Close file logger

func (*FileLogger) ReadLog 

func (l *FileLogger) ReadLog(offset int64, length int64) (string, error)

ReadLog reads log from current logfile

func (*FileLogger) ReadTailLog 

func (l *FileLogger) ReadTailLog(offset int64, length int64) (string, int64, bool, error)

ReadTailLog tails current log file

func (*FileLogger) SetPid 

func (l *FileLogger) SetPid(pid int)

SetPid sets pid of the program

func (*FileLogger) Write 

func (l *FileLogger) Write(p []byte) (int, error)

Write overrides function in io.Writer. Write log message to the file

type LogCaptureLogger 

type LogCaptureLogger struct {
	// contains filtered or unexported fields
}

LogCaptureLogger capture the log for further analysis

func NewLogCaptureLogger 

func NewLogCaptureLogger(underlineLogger Logger,
	captureMaxBytes int,
	stdType string,
	procName string,
	groupName string) *LogCaptureLogger

NewLogCaptureLogger creates new LogCaptureLogger object

func (*LogCaptureLogger) ClearAllLogFile 

func (l *LogCaptureLogger) ClearAllLogFile() error

ClearAllLogFile clears all log files

func (*LogCaptureLogger) ClearCurLogFile 

func (l *LogCaptureLogger) ClearCurLogFile() error

ClearCurLogFile clears current log file

func (*LogCaptureLogger) Close 

func (l *LogCaptureLogger) Close() error

Close LogCaptureLogger

func (*LogCaptureLogger) ReadLog 

func (l *LogCaptureLogger) ReadLog(offset int64, length int64) (string, error)

ReadLog reads log from LogCaptureLogger

func (*LogCaptureLogger) ReadTailLog 

func (l *LogCaptureLogger) ReadTailLog(offset int64, length int64) (string, int64, bool, error)

ReadTailLog tails log from LogCaptureLogger

func (*LogCaptureLogger) SetPid 

func (l *LogCaptureLogger) SetPid(pid int)

SetPid sets pid of program

func (*LogCaptureLogger) Write 

func (l *LogCaptureLogger) Write(p []byte) (int, error)

Write log to LogCaptureLogger

type LogEventEmitter 

type LogEventEmitter interface {
	// contains filtered or unexported methods
}

LogEventEmitter the interface to emit log events

type Logger 

type Logger interface {
	io.WriteCloser
	SetPid(pid int)
	ReadLog(offset int64, length int64) (string, error)
	ReadTailLog(offset int64, length int64) (string, int64, bool, error)
	ClearCurLogFile() error
	ClearAllLogFile() error
}

Logger the log interface to log program stdout/stderr logs to file

func NewLogger 

func NewLogger(programName string, logFile string, locker sync.Locker, maxBytes int64, backups int, props map[string]string, logEventEmitter LogEventEmitter) Logger

NewLogger creates logger for a program with parameters

type NullLocker 

type NullLocker struct {
}

NullLocker no lock

func NewNullLocker 

func NewNullLocker() *NullLocker

NewNullLocker creates new NullLocker object

func (*NullLocker) Lock 

func (l *NullLocker) Lock()

Lock is a stub function for NullLocker

func (*NullLocker) Unlock 

func (l *NullLocker) Unlock()

Unlock is a stub function for NullLocker

type NullLogEventEmitter 

type NullLogEventEmitter struct {
}

NullLogEventEmitter will not emit log to any listener

func NewNullLogEventEmitter 

func NewNullLogEventEmitter() *NullLogEventEmitter

NewNullLogEventEmitter creates new NullLogEventEmitter object

type NullLogger 

type NullLogger struct {
	// contains filtered or unexported fields
}

NullLogger discard the program stdout/stderr log

func NewNullLogger 

func NewNullLogger(logEventEmitter LogEventEmitter) *NullLogger

NewNullLogger creates NullLogger object

func (*NullLogger) ClearAllLogFile 

func (l *NullLogger) ClearAllLogFile() error

ClearAllLogFile returns error for NullLogger

func (*NullLogger) ClearCurLogFile 

func (l *NullLogger) ClearCurLogFile() error

ClearCurLogFile returns error for NullLogger

func (*NullLogger) Close 

func (l *NullLogger) Close() error

Close the NullLogger

func (*NullLogger) ReadLog 

func (l *NullLogger) ReadLog(offset int64, length int64) (string, error)

ReadLog returns error for NullLogger

func (*NullLogger) ReadTailLog 

func (l *NullLogger) ReadTailLog(offset int64, length int64) (string, int64, bool, error)

ReadTailLog returns error for NullLogger

func (*NullLogger) SetPid 

func (l *NullLogger) SetPid(pid int)

SetPid sets pid of program

func (*NullLogger) Write 

func (l *NullLogger) Write(p []byte) (int, error)

Write log to NullLogger

type StdLogEventEmitter 

type StdLogEventEmitter struct {
	Type string
	// contains filtered or unexported fields
}

StdLogEventEmitter emit the Stdout/Stderr LogEvent

func NewStderrLogEventEmitter 

func NewStderrLogEventEmitter(processName string, groupName string, procPidFunc func() int) *StdLogEventEmitter

NewStderrLogEventEmitter creates new StdLogEventEmitter object for emitting Stderr log events

func NewStdoutLogEventEmitter 

func NewStdoutLogEventEmitter(processName string, groupName string, procPidFunc func() int) *StdLogEventEmitter

NewStdoutLogEventEmitter creates new StdLogEventEmitter object

type StdLogger 

type StdLogger struct {
	NullLogger
	// contains filtered or unexported fields
}

StdLogger stdout/stderr logger implementation

func NewStderrLogger 

func NewStderrLogger(logEventEmitter LogEventEmitter) *StdLogger

NewStderrLogger creates stderr logger

func NewStdoutLogger 

func NewStdoutLogger(logEventEmitter LogEventEmitter) *StdLogger

NewStdoutLogger creates StdLogger object

func (*StdLogger) Write 

func (l *StdLogger) Write(p []byte) (int, error)

Write output to stdout/stderr

type SysLogger 

type SysLogger struct {
	NullLogger
	// contains filtered or unexported fields
}

SysLogger log program stdout/stderr to syslog

func NewRemoteSysLogger 

func NewRemoteSysLogger(name string, config string, props map[string]string, logEventEmitter LogEventEmitter) *SysLogger

NewRemoteSysLogger creates network syslog logger object

func NewSysLogger 

func NewSysLogger(name string, props map[string]string, logEventEmitter LogEventEmitter) *SysLogger

NewSysLogger creates local syslog

func (*SysLogger) Close 

func (sl *SysLogger) Close() error

Close (sys)logger

func (*SysLogger) Write 

func (sl *SysLogger) Write(b []byte) (int, error)

Write log to syslog

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