logger

Documentation

Index

• type Factory
• type Logger
• type NullLogger
  • func (n *NullLogger) Create(_ string) Logger
  • func (n *NullLogger) Err(_ []byte)
  • func (n *NullLogger) Out(_ []byte)
• type Wrapper
  • func (l *Wrapper) Write(bytes []byte) (int, error)

Types

type Factory

type Factory interface {
	Create(name string) Logger
}

Factory defines methods a factory should implement, to create a Logger based on the specified name.

type Logger

type Logger interface {
	Out(bytes []byte)
	Err(bytes []byte)
}

Logger defines methods to implement for being a logger.

type NullLogger

type NullLogger struct {
}

NullLogger is a logger.Logger and logger.Factory implementation that does nothing.

func (*NullLogger) Create

func (n *NullLogger) Create(_ string) Logger

Create implements logger.Factory and returns a NullLogger.

func (*NullLogger) Err

func (n *NullLogger) Err(_ []byte)

Err is a no-op function.

func (*NullLogger) Out

func (n *NullLogger) Out(_ []byte)

Out is a no-op function.

type Wrapper

type Wrapper struct {
	Err    bool
	Logger Logger
}

Wrapper is a wrapper around Logger that implements the Writer interface, mainly use by docker/pkg/stdcopy functions.

func (*Wrapper) Write

func (l *Wrapper) Write(bytes []byte) (int, error)