etcd: go.etcd.io/etcd/pkg/logutil Index | Files

package logutil

import "go.etcd.io/etcd/pkg/logutil"

Package logutil includes utilities to facilitate logging.

Index

Package Files

discard_logger.go doc.go logger.go merge_logger.go package_logger.go zap.go zap_grpc.go zap_journal.go zap_raft.go

Variables

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var DefaultZapLoggerConfig = zap.Config{
    Level: zap.NewAtomicLevelAt(zap.InfoLevel),

    Development: false,
    Sampling: &zap.SamplingConfig{
        Initial:    100,
        Thereafter: 100,
    },

    Encoding: "json",

    EncoderConfig: zapcore.EncoderConfig{
        TimeKey:        "ts",
        LevelKey:       "level",
        NameKey:        "logger",
        CallerKey:      "caller",
        MessageKey:     "msg",
        StacktraceKey:  "stacktrace",
        LineEnding:     zapcore.DefaultLineEnding,
        EncodeLevel:    zapcore.LowercaseLevelEncoder,
        EncodeTime:     zapcore.ISO8601TimeEncoder,
        EncodeDuration: zapcore.StringDurationEncoder,
        EncodeCaller:   zapcore.ShortCallerEncoder,
    },

    OutputPaths:      []string{"stderr"},
    ErrorOutputPaths: []string{"stderr"},
}

DefaultZapLoggerConfig defines default zap logger configuration.

func AddOutputPaths Uses

❖
func AddOutputPaths(cfg zap.Config, outputPaths, errorOutputPaths []string) zap.Config

AddOutputPaths adds output paths to the existing output paths, resolving conflicts.

func NewGRPCLoggerV2 Uses

❖
func NewGRPCLoggerV2(lcfg zap.Config) (grpclog.LoggerV2, error)

NewGRPCLoggerV2 converts "*zap.Logger" to "grpclog.LoggerV2". It discards all INFO level logging in gRPC, if debug level is not enabled in "*zap.Logger".

func NewGRPCLoggerV2FromZapCore Uses

❖
func NewGRPCLoggerV2FromZapCore(cr zapcore.Core, syncer zapcore.WriteSyncer) grpclog.LoggerV2

NewGRPCLoggerV2FromZapCore creates "grpclog.LoggerV2" from "zap.Core" and "zapcore.WriteSyncer". It discards all INFO level logging in gRPC, if debug level is not enabled in "*zap.Logger".

func NewJournalWriter Uses

❖
func NewJournalWriter(wr io.Writer) (io.Writer, error)

NewJournalWriter wraps "io.Writer" to redirect log output to the local systemd journal. If journald send fails, it fails back to writing to the original writer. The decode overhead is only <30µs per write. Reference: https://github.com/coreos/pkg/blob/master/capnslog/journald_formatter.go

func NewRaftLogger Uses

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func NewRaftLogger(lcfg *zap.Config) (raft.Logger, error)

NewRaftLogger converts "*zap.Logger" to "raft.Logger".

func NewRaftLoggerFromZapCore Uses

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func NewRaftLoggerFromZapCore(cr zapcore.Core, syncer zapcore.WriteSyncer) raft.Logger

NewRaftLoggerFromZapCore creates "raft.Logger" from "zap.Core" and "zapcore.WriteSyncer".

type Logger Uses

❖
type Logger interface {
    grpclog.LoggerV2

    // Lvl returns logger if logger's verbosity level >= "lvl".
    // Otherwise, logger that discards everything.
    Lvl(lvl int) grpclog.LoggerV2
}

Logger defines logging interface. TODO: deprecate in v3.5.

func NewDiscardLogger Uses

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func NewDiscardLogger() Logger

NewDiscardLogger returns a new Logger that discards everything except "fatal".

func NewLogger Uses

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func NewLogger(g grpclog.LoggerV2) Logger

NewLogger wraps "grpclog.LoggerV2" that implements "Logger" interface.

For example: 

var defaultLogger Logger
g := grpclog.NewLoggerV2WithVerbosity(os.Stderr, os.Stderr, os.Stderr, 4)
defaultLogger = NewLogger(g)

func NewPackageLogger Uses

❖
func NewPackageLogger(repo, pkg string) Logger

NewPackageLogger wraps "*capnslog.PackageLogger" that implements "Logger" interface.

For example: 

var defaultLogger Logger
defaultLogger = NewPackageLogger("go.etcd.io/etcd", "snapshot")

type MergeLogger Uses

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type MergeLogger struct {
    *capnslog.PackageLogger
    // contains filtered or unexported fields
}

MergeLogger supports merge logging, which merges repeated log lines and prints summary log lines instead.

For merge logging, MergeLogger prints out the line when the line appears at the first time. MergeLogger holds the same log line printed within defaultMergePeriod, and prints out summary log line at the end of defaultMergePeriod. It stops merging when the line doesn't appear within the defaultMergePeriod.

func NewMergeLogger Uses

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func NewMergeLogger(logger *capnslog.PackageLogger) *MergeLogger

func (*MergeLogger) MergeError Uses

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func (l *MergeLogger) MergeError(entries ...interface{})

func (*MergeLogger) MergeErrorf Uses

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func (l *MergeLogger) MergeErrorf(format string, args ...interface{})

func (*MergeLogger) MergeInfo Uses

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func (l *MergeLogger) MergeInfo(entries ...interface{})

func (*MergeLogger) MergeInfof Uses

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func (l *MergeLogger) MergeInfof(format string, args ...interface{})

func (*MergeLogger) MergeNotice Uses

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func (l *MergeLogger) MergeNotice(entries ...interface{})

func (*MergeLogger) MergeNoticef Uses

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func (l *MergeLogger) MergeNoticef(format string, args ...interface{})

func (*MergeLogger) MergeWarning Uses

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func (l *MergeLogger) MergeWarning(entries ...interface{})

func (*MergeLogger) MergeWarningf Uses

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func (l *MergeLogger) MergeWarningf(format string, args ...interface{})

Package logutil imports 18 packages (graph) and is imported by 69 packages. Updated 2019-03-06. Refresh now. Tools for package owners.