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100 lines
3.0 KiB
Go
100 lines
3.0 KiB
Go
package logr
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import "log"
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// Logger provides context for logging via fields.
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type Logger struct {
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lgr *Logr
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fields []Field
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}
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// Logr returns the `Logr` instance that created this `Logger`.
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func (logger Logger) Logr() *Logr {
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return logger.lgr
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}
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// With creates a new `Logger` with any existing fields plus the new ones.
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func (logger Logger) With(fields ...Field) Logger {
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l := Logger{lgr: logger.lgr}
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size := len(logger.fields) + len(fields)
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if size > 0 {
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l.fields = make([]Field, 0, size)
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l.fields = append(l.fields, logger.fields...)
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l.fields = append(l.fields, fields...)
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}
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return l
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}
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// StdLogger creates a standard logger backed by this `Logr.Logger` instance.
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// All log records are emitted with the specified log level.
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func (logger Logger) StdLogger(level Level) *log.Logger {
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return NewStdLogger(level, logger)
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}
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// IsLevelEnabled determines if the specified level is enabled for at least
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// one log target.
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func (logger Logger) IsLevelEnabled(level Level) bool {
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status := logger.Logr().IsLevelEnabled(level)
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return status.Enabled
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}
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// Sugar creates a new `Logger` with a less structured API. Any fields are preserved.
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func (logger Logger) Sugar(fields ...Field) Sugar {
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return Sugar{
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logger: logger.With(fields...),
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}
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}
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// Log checks that the level matches one or more targets, and
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// if so, generates a log record that is added to the Logr queue.
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// Arguments are handled in the manner of fmt.Print.
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func (logger Logger) Log(lvl Level, msg string, fields ...Field) {
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status := logger.lgr.IsLevelEnabled(lvl)
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if status.Enabled {
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rec := NewLogRec(lvl, logger, msg, fields, status.Stacktrace)
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logger.lgr.enqueue(rec)
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}
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}
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// LogM calls `Log` multiple times, one for each level provided.
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func (logger Logger) LogM(levels []Level, msg string, fields ...Field) {
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for _, lvl := range levels {
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logger.Log(lvl, msg, fields...)
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}
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}
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// Trace is a convenience method equivalent to `Log(TraceLevel, msg, fields...)`.
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func (logger Logger) Trace(msg string, fields ...Field) {
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logger.Log(Trace, msg, fields...)
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}
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// Debug is a convenience method equivalent to `Log(DebugLevel, msg, fields...)`.
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func (logger Logger) Debug(msg string, fields ...Field) {
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logger.Log(Debug, msg, fields...)
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}
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// Info is a convenience method equivalent to `Log(InfoLevel, msg, fields...)`.
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func (logger Logger) Info(msg string, fields ...Field) {
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logger.Log(Info, msg, fields...)
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}
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// Warn is a convenience method equivalent to `Log(WarnLevel, msg, fields...)`.
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func (logger Logger) Warn(msg string, fields ...Field) {
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logger.Log(Warn, msg, fields...)
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}
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// Error is a convenience method equivalent to `Log(ErrorLevel, msg, fields...)`.
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func (logger Logger) Error(msg string, fields ...Field) {
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logger.Log(Error, msg, fields...)
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}
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// Fatal is a convenience method equivalent to `Log(FatalLevel, msg, fields...)`
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func (logger Logger) Fatal(msg string, fields ...Field) {
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logger.Log(Fatal, msg, fields...)
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}
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// Panic is a convenience method equivalent to `Log(PanicLevel, msg, fields...)`
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func (logger Logger) Panic(msg string, fields ...Field) {
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logger.Log(Panic, msg, fields...)
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}
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