/
logger.go
69 lines (57 loc) · 1.55 KB
/
logger.go
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package logging
import (
"context"
"sync"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
type contextKey string
const loggerKey = contextKey("logger")
var (
defaultLogger *zap.SugaredLogger
defaultLoggerOnce sync.Once
)
// NewDevelopmentLogger logger with config for development
func NewDevelopmentLogger() *zap.SugaredLogger {
cfg := &zap.Config{
Encoding: "console",
Level: zap.NewAtomicLevelAt(zapcore.DebugLevel),
Development: true,
EncoderConfig: zapcore.EncoderConfig{
TimeKey: "T",
LevelKey: "L",
NameKey: "N",
CallerKey: "C",
FunctionKey: zapcore.OmitKey,
MessageKey: "M",
StacktraceKey: "S",
LineEnding: zapcore.DefaultLineEnding,
EncodeLevel: zapcore.CapitalLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.StringDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
},
ErrorOutputPaths: []string{"stderr"},
OutputPaths: []string{"stdout"},
}
logger, err := cfg.Build()
if err != nil {
logger = zap.NewNop()
}
return logger.Sugar()
}
func DefaultDevelopmentLogger() *zap.SugaredLogger {
defaultLoggerOnce.Do(func() {
defaultLogger = NewDevelopmentLogger()
})
return defaultLogger
}
func WithLogger(ctx context.Context, logger *zap.SugaredLogger) context.Context {
return context.WithValue(ctx, loggerKey, logger)
}
func FromContext(ctx context.Context) *zap.SugaredLogger {
if logger, ok := ctx.Value(loggerKey).(*zap.SugaredLogger); ok {
return logger
}
return DefaultDevelopmentLogger()
}