logger

package
v1.0.15 Latest Latest
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 Go to latest Published: Mar 31, 2016 License: BSD-3-Clause, BSD-3-Clause Imports: 15 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ErrorWriter 

func ErrorWriter() io.Writer

Return our writer so we can override Write()

func FileExists 

func FileExists(path string) (bool, error)

func MakeParentDirs 

func MakeParentDirs(filename string) error

func NewContextWithLogTags 

func NewContextWithLogTags(
	ctx context.Context, logTagsToAdd CtxLogTags) context.Context

NewContext returns a new Context that carries adds the given log tag mappings (context key -> display string).

func OpenLogFile 

func OpenLogFile(filename string) (name string, file *os.File, err error)

func OutputWriter 

func OutputWriter() io.Writer

Return our writer so we can override Write()

func OutputWriterFromFile 

func OutputWriterFromFile(out *os.File) io.Writer

Return our writer so we can override Write()

func PickFirstError 

func PickFirstError(errors ...error) error

func SetLogFileConfig 

func SetLogFileConfig(lfc *LogFileConfig) error

SetLogFileConfig sets the log file config to be used globally.

Types

type ColorWriter 

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

func (*ColorWriter) Fd 

func (cw *ColorWriter) Fd() uintptr

Fd returns the underlying file descriptor. This is mainly to support checking whether it's a terminal or not.

func (*ColorWriter) Write 

func (cw *ColorWriter) Write(p []byte) (n int, err error)

Rough emulation of Ansi terminal codes. Parse the string, pick out the codes, and convert to calls to SetConsoleTextAttribute.

This function must mix calls to SetConsoleTextAttribute with separate Write() calls, so to prevent pieces of colored strings from being interleaved by unsynchronized goroutines, we unfortunately must lock a mutex.

Notice this is only necessary for what is now called "legacy" terminal mode: https://technet.microsoft.com/en-us/library/mt427362.aspx?f=255&MSPPError=-2147217396

type CtxLogTags 

type CtxLogTags map[interface{}]string

func LogTagsFromContext 

func LogTagsFromContext(ctx context.Context) (CtxLogTags, bool)

LogTagsFromContext returns the log tags being passed along with the given context.

type CtxStandardLoggerKey 

type CtxStandardLoggerKey int

CtxStandardLoggerKey is a type defining context keys used by the Standard logger. 

const (
	// CtxLogTags defines a context key that can hold a slice of context
	// keys, the value of which should be logged by a Standard logger if
	// one of those keys is seen in a context during a log call.
	CtxLogTagsKey CtxStandardLoggerKey = iota
)

type ExternalHandler 

type ExternalHandler interface {
	Log(level keybase1.LogLevel, format string, args []interface{})
}

type ExternalLogger 

type ExternalLogger interface {
	Log(level keybase1.LogLevel, format string, args []interface{})
}

type LogFileConfig 

type LogFileConfig struct {
	// Path is the path of the log file to use
	Path string
	// MaxSize is the size of log file (in bytes) before rotation, 0 for infinite.
	MaxSize int64
	// MaxAge is the duration before log rotation, zero value for infinite.
	MaxAge time.Duration
	// MaxKeepFiles is maximum number of log files for this service, older
	// files are deleted.
	MaxKeepFiles int
}

LogFileConfig is the config structure for new style log files with rotation.

type Logger 

type Logger interface {
	// Debug logs a message at debug level, with formatting args.
	Debug(format string, args ...interface{})
	// CDebugf logs a message at debug level, with a context and
	// formatting args.
	CDebugf(ctx context.Context, format string, args ...interface{})
	// Info logs a message at info level, with formatting args.
	Info(format string, args ...interface{})
	// CInfo logs a message at info level, with a context and formatting args.
	CInfof(ctx context.Context, format string, args ...interface{})
	// Notice logs a message at notice level, with formatting args.
	Notice(format string, args ...interface{})
	// CNoticef logs a message at notice level, with a context and
	// formatting args.
	CNoticef(ctx context.Context, format string, args ...interface{})
	// Warning logs a message at warning level, with formatting args.
	Warning(format string, args ...interface{})
	// CWarning logs a message at warning level, with a context and
	// formatting args.
	CWarningf(ctx context.Context, format string, args ...interface{})
	// Error logs a message at error level, with formatting args
	Error(format string, args ...interface{})
	// Errorf logs a message at error level, with formatting args.
	Errorf(format string, args ...interface{})
	// CErrorf logs a message at error level, with a context and
	// formatting args.
	CErrorf(ctx context.Context, format string, args ...interface{})
	// Critical logs a message at critical level, with formatting args.
	Critical(format string, args ...interface{})
	// CCriticalf logs a message at critical level, with a context and
	// formatting args.
	CCriticalf(ctx context.Context, format string, args ...interface{})
	// Fatalf logs a message at fatal level, with formatting args.
	Fatalf(format string, args ...interface{})
	// Fatalf logs a message at fatal level, with a context and formatting args.
	CFatalf(ctx context.Context, format string, args ...interface{})
	// Profile logs a profile message, with formatting args.
	Profile(fmts string, arg ...interface{})
	// Configure sets the style, debug level, and filename of the
	// logger.  Output isn't redirected to the file until
	// RotateLogFile is called for the first time.
	Configure(style string, debug bool, filename string)
	// RotateLogFile rotates the log file, if the underlying logger is
	// writing to a file.
	RotateLogFile() error

	// SetExternalHandler sets a handler that will be called with every log message.
	SetExternalHandler(handler ExternalHandler)
}

type Null 

type Null struct{}

func NewNull 

func NewNull() *Null

func (*Null) CCriticalf 

func (l *Null) CCriticalf(ctx context.Context, fmt string, arg ...interface{})

func (*Null) CDebugf 

func (l *Null) CDebugf(ctx context.Context, fmt string, arg ...interface{})

func (*Null) CErrorf 

func (l *Null) CErrorf(ctx context.Context, fmt string, arg ...interface{})

func (*Null) CFatalf 

func (l *Null) CFatalf(ctx context.Context, fmt string, arg ...interface{})

func (*Null) CInfof 

func (l *Null) CInfof(ctx context.Context, fmt string, arg ...interface{})

func (*Null) CNoticef 

func (l *Null) CNoticef(ctx context.Context, fmt string, arg ...interface{})

func (*Null) CWarningf 

func (l *Null) CWarningf(ctx context.Context, fmt string, arg ...interface{})

func (*Null) Configure 

func (l *Null) Configure(style string, debug bool, filename string)

func (*Null) Critical 

func (l *Null) Critical(format string, args ...interface{})

func (*Null) Debug 

func (l *Null) Debug(format string, args ...interface{})

func (*Null) Error 

func (l *Null) Error(fmt string, arg ...interface{})

func (*Null) Errorf 

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

func (*Null) Fatalf 

func (l *Null) Fatalf(fmt string, arg ...interface{})

func (*Null) Info 

func (l *Null) Info(format string, args ...interface{})

func (*Null) Notice 

func (l *Null) Notice(format string, args ...interface{})

func (*Null) Profile 

func (l *Null) Profile(fmts string, arg ...interface{})

func (*Null) RotateLogFile 

func (l *Null) RotateLogFile() error

func (*Null) SetExternalHandler 

func (l *Null) SetExternalHandler(handler ExternalHandler)

func (*Null) Shutdown 

func (l *Null) Shutdown()

func (*Null) Warning 

func (l *Null) Warning(format string, args ...interface{})

type Standard 

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

func New 

func New(module string) *Standard

New creates a new Standard logger for module.

func NewWithCallDepth 

func NewWithCallDepth(module string, extraCallDepth int) *Standard

NewWithCallDepth creates a new Standard logger for module, and when printing file names and line numbers, it goes extraCallDepth up the stack from where logger was invoked.

func (*Standard) CCriticalf 

func (log *Standard) CCriticalf(ctx context.Context, fmt string,
	arg ...interface{})

func (*Standard) CDebugf 

func (log *Standard) CDebugf(ctx context.Context, fmt string,
	arg ...interface{})

func (*Standard) CErrorf 

func (log *Standard) CErrorf(ctx context.Context, fmt string,
	arg ...interface{})

func (*Standard) CFatalf 

func (log *Standard) CFatalf(ctx context.Context, fmt string,
	arg ...interface{})

func (*Standard) CInfof 

func (log *Standard) CInfof(ctx context.Context, fmt string,
	arg ...interface{})

func (*Standard) CNoticef 

func (log *Standard) CNoticef(ctx context.Context, fmt string,
	arg ...interface{})

func (*Standard) CWarningf 

func (log *Standard) CWarningf(ctx context.Context, fmt string,
	arg ...interface{})

func (*Standard) Configure 

func (log *Standard) Configure(style string, debug bool, filename string)

Configure sets the style of the log file, whether debugging (verbose) is enabled and a filename. If a filename is provided here it will be used for logging straight away (this is a new feature). SetLogFileConfig provides a way to set the log file with more control on rotation.

func (*Standard) Critical 

func (log *Standard) Critical(fmt string, arg ...interface{})

func (*Standard) Debug 

func (log *Standard) Debug(fmt string, arg ...interface{})

func (*Standard) Error 

func (log *Standard) Error(fmt string, arg ...interface{})

func (*Standard) Errorf 

func (log *Standard) Errorf(fmt string, arg ...interface{})

func (*Standard) Fatalf 

func (log *Standard) Fatalf(fmt string, arg ...interface{})

func (*Standard) GetUnforwardedLogger 

func (log *Standard) GetUnforwardedLogger() *UnforwardedLogger

func (*Standard) Info 

func (log *Standard) Info(fmt string, arg ...interface{})

func (*Standard) Notice 

func (log *Standard) Notice(fmt string, arg ...interface{})

func (*Standard) Profile 

func (log *Standard) Profile(fmts string, arg ...interface{})

func (*Standard) RotateLogFile 

func (log *Standard) RotateLogFile() error

RotateLogFile is the old style of logging to a file. It uses a default config for log rotation and uses the filename set from .Configure.

func (*Standard) SetExternalHandler 

func (log *Standard) SetExternalHandler(handler ExternalHandler)

func (*Standard) Warning 

func (log *Standard) Warning(fmt string, arg ...interface{})

type TestLogBackend 

type TestLogBackend interface {
	Error(args ...interface{})
	Errorf(format string, args ...interface{})
	Fatal(args ...interface{})
	Fatalf(format string, args ...interface{})
	Log(args ...interface{})
	Logf(format string, args ...interface{})
}

TestLogBackend is an interface for logging to a test object (i.e., a *testing.T). We define this in order to avoid pulling in the "testing" package in exported code.

type TestLogger 

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

TestLogger is a Logger that writes to a TestLogBackend. All messages except Fatal are printed using Logf, to avoid failing a test that is trying to test an error condition. No context tags are logged.

func NewTestLogger 

func NewTestLogger(log TestLogBackend) *TestLogger

func (*TestLogger) CCriticalf 

func (log *TestLogger) CCriticalf(ctx context.Context, fmts string,
	arg ...interface{})

func (*TestLogger) CDebugf 

func (log *TestLogger) CDebugf(ctx context.Context, fmts string,
	arg ...interface{})

func (*TestLogger) CErrorf 

func (log *TestLogger) CErrorf(ctx context.Context, fmts string,
	arg ...interface{})

func (*TestLogger) CFatalf 

func (log *TestLogger) CFatalf(ctx context.Context, fmts string,
	arg ...interface{})

func (*TestLogger) CInfof 

func (log *TestLogger) CInfof(ctx context.Context, fmts string,
	arg ...interface{})

func (*TestLogger) CNoticef 

func (log *TestLogger) CNoticef(ctx context.Context, fmts string,
	arg ...interface{})

func (*TestLogger) CWarningf 

func (log *TestLogger) CWarningf(ctx context.Context, fmts string,
	arg ...interface{})

func (*TestLogger) Configure 

func (log *TestLogger) Configure(style string, debug bool, filename string)

func (*TestLogger) Critical 

func (log *TestLogger) Critical(fmts string, arg ...interface{})

func (*TestLogger) Debug 

func (log *TestLogger) Debug(fmts string, arg ...interface{})

func (*TestLogger) Error 

func (log *TestLogger) Error(fmts string, arg ...interface{})

func (*TestLogger) Errorf 

func (log *TestLogger) Errorf(fmts string, arg ...interface{})

func (*TestLogger) Fatalf 

func (log *TestLogger) Fatalf(fmts string, arg ...interface{})

func (*TestLogger) Info 

func (log *TestLogger) Info(fmts string, arg ...interface{})

func (*TestLogger) Notice 

func (log *TestLogger) Notice(fmts string, arg ...interface{})

func (*TestLogger) Profile 

func (log *TestLogger) Profile(fmts string, arg ...interface{})

func (*TestLogger) RotateLogFile 

func (log *TestLogger) RotateLogFile() error

func (*TestLogger) SetExternalHandler 

func (log *TestLogger) SetExternalHandler(_ ExternalHandler)

no-op stubs to fulfill the Logger interface

func (*TestLogger) Warning 

func (log *TestLogger) Warning(fmts string, arg ...interface{})

type UnforwardedLogger 

type UnforwardedLogger Standard

func (*UnforwardedLogger) Debug 

func (log *UnforwardedLogger) Debug(s string, args ...interface{})

func (*UnforwardedLogger) Error 

func (log *UnforwardedLogger) Error(s string, args ...interface{})

func (*UnforwardedLogger) Errorf 

func (log *UnforwardedLogger) Errorf(s string, args ...interface{})

func (*UnforwardedLogger) Info 

func (log *UnforwardedLogger) Info(s string, args ...interface{})

func (*UnforwardedLogger) Profile 

func (log *UnforwardedLogger) Profile(s string, args ...interface{})

func (*UnforwardedLogger) Warning 

func (log *UnforwardedLogger) Warning(s string, args ...interface{})

type WORD 

type WORD uint16

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