logger

package
v1.0.18 Latest Latest
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 Go to latest Published: Oct 26, 2016 License: BSD-3-Clause, BSD-3-Clause Imports: 17 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ErrorWriter 

func ErrorWriter() io.Writer

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

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 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 (
	// CtxLogTagsKey defines a context key that can associate with a map of
	// context keys (key -> descriptive-name), the mapped values 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

	// Returns a logger that is like the current one, except with
	// more logging depth added on.
	CloneWithAddedDepth(depth int) Logger

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

func NewRPCLoggerAdapter added in v1.0.18 

func NewRPCLoggerAdapter(log rpc.LogOutput) Logger

type Loggerf added in v1.0.17 

type Loggerf interface {
	Debugf(s string, args ...interface{})
	Infof(s string, args ...interface{})
	Warningf(s string, args ...interface{})
	Errorf(s string, args ...interface{})
}

Loggerf is a minimal log interface (using proper formatter style methods)

func NewLoggerf added in v1.0.17 

func NewLoggerf(log loggerInternal) Loggerf

NewLoggerf adapts a logger

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) CloneWithAddedDepth added in v1.0.16 

func (l *Null) CloneWithAddedDepth(depth int) Logger

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 RPCLoggerAdapter added in v1.0.18 

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

RPCLoggerAdapter is used to turn a logger complying to the rpc.LogOutput interface into one that can be used as a logger.Logger

func (RPCLoggerAdapter) CCriticalf added in v1.0.18 

func (l RPCLoggerAdapter) CCriticalf(_ context.Context, format string, args ...interface{})

func (RPCLoggerAdapter) CDebugf added in v1.0.18 

func (l RPCLoggerAdapter) CDebugf(_ context.Context, format string, args ...interface{})

func (RPCLoggerAdapter) CErrorf added in v1.0.18 

func (l RPCLoggerAdapter) CErrorf(_ context.Context, format string, args ...interface{})

func (RPCLoggerAdapter) CFatalf added in v1.0.18 

func (l RPCLoggerAdapter) CFatalf(_ context.Context, format string, args ...interface{})

func (RPCLoggerAdapter) CInfof added in v1.0.18 

func (l RPCLoggerAdapter) CInfof(_ context.Context, format string, args ...interface{})

func (RPCLoggerAdapter) CNoticef added in v1.0.18 

func (l RPCLoggerAdapter) CNoticef(_ context.Context, format string, args ...interface{})

func (RPCLoggerAdapter) CWarningf added in v1.0.18 

func (l RPCLoggerAdapter) CWarningf(_ context.Context, format string, args ...interface{})

func (RPCLoggerAdapter) CloneWithAddedDepth added in v1.0.18 

func (l RPCLoggerAdapter) CloneWithAddedDepth(depth int) Logger

func (RPCLoggerAdapter) Configure added in v1.0.18 

func (l RPCLoggerAdapter) Configure(style string, debug bool, filename string)

func (RPCLoggerAdapter) Critical added in v1.0.18 

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

func (RPCLoggerAdapter) Debug added in v1.0.18 

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

func (RPCLoggerAdapter) Error added in v1.0.18 

func (l RPCLoggerAdapter) Error(format string, args ...interface{})

func (RPCLoggerAdapter) Errorf added in v1.0.18 

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

func (RPCLoggerAdapter) Fatalf added in v1.0.18 

func (l RPCLoggerAdapter) Fatalf(format string, args ...interface{})

func (RPCLoggerAdapter) Info added in v1.0.18 

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

func (RPCLoggerAdapter) Notice added in v1.0.18 

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

func (RPCLoggerAdapter) Profile added in v1.0.18 

func (l RPCLoggerAdapter) Profile(format string, args ...interface{})

func (RPCLoggerAdapter) RotateLogFile added in v1.0.18 

func (l RPCLoggerAdapter) RotateLogFile() error

func (RPCLoggerAdapter) SetExternalHandler added in v1.0.18 

func (l RPCLoggerAdapter) SetExternalHandler(handler ExternalHandler)

func (RPCLoggerAdapter) Warning added in v1.0.18 

func (l RPCLoggerAdapter) 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) CloneWithAddedDepth added in v1.0.16 

func (log *Standard) CloneWithAddedDepth(depth int) Logger

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) CloneWithAddedDepth added in v1.0.16 

func (log *TestLogger) CloneWithAddedDepth(depth int) Logger

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{})

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