logger

Documentation

Overview

Package logger provides a logger that logs to Google Cloud Logging. It's a thin wrapper around golang/cloud/logging package.

Index

• Constants
• type Logger
  • func New(ctx context.Context, logName string) (*Logger, error)
  • func (l *Logger) Critical(payload interface{})
  • func (l *Logger) Criticalf(format string, args ...interface{})
  • func (l *Logger) Debug(payload interface{})
  • func (l *Logger) Debugf(format string, args ...interface{})
  • func (l *Logger) Error(payload interface{})
  • func (l *Logger) Errorf(format string, args ...interface{})
  • func (l *Logger) Info(payload interface{})
  • func (l *Logger) Infof(format string, args ...interface{})
  • func (l *Logger) Warning(payload interface{})
  • func (l *Logger) Warningf(format string, args ...interface{})

Constants

const (

	// MaxLogEntrySize Max value of each log entry size
	MaxLogEntrySize = 4096
)

Types

type Logger

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

Logger implements a logger that logs messages to Google Cloud Logging. It provides a suite of methods where each method correponds to a specific logging.Level, e.g. Error(paylod interface{}). Each method takes a payload that has to either be a JSON-encodable object, a string or a []byte slice (all other types of payload will result in error).

It falls back to logging through the traditional logger if:

• Not running on GCE,
• Logging client is uninitialized (e.g. for testing),
• Logging to cloud fails for some reason.

Logger{} is a valid object that will log through the traditional logger.

func New

func New(ctx context.Context, logName string) (*Logger, error)

New returns a new Logger object with cloud logging client initialized if running on GCE.

func (*Logger) Critical

func (l *Logger) Critical(payload interface{})

Critical logs messages with logging level set to "Critical" and exits the process with error status.

func (*Logger) Criticalf

func (l *Logger) Criticalf(format string, args ...interface{})

Criticalf logs formatted text messages with logging level "Critical".

func (*Logger) Debug

func (l *Logger) Debug(payload interface{})

Debug logs messages with logging level set to "Debug".

func (*Logger) Debugf

func (l *Logger) Debugf(format string, args ...interface{})

Debugf logs formatted text messages with logging level "Debug".

func (*Logger) Error

func (l *Logger) Error(payload interface{})

Error logs messages with logging level set to "Error".

func (*Logger) Errorf

func (l *Logger) Errorf(format string, args ...interface{})

Errorf logs formatted text messages with logging level "Error".

func (*Logger) Info

func (l *Logger) Info(payload interface{})

Info logs messages with logging level set to "Info".

func (*Logger) Infof

func (l *Logger) Infof(format string, args ...interface{})

Infof logs formatted text messages with logging level "Info".

func (*Logger) Warning

func (l *Logger) Warning(payload interface{})

Warning logs messages with logging level set to "Warning".

func (*Logger) Warningf

func (l *Logger) Warningf(format string, args ...interface{})

Warningf logs formatted text messages with logging level "Warning".