scylladb / go-log

Wrapper over Uber Zap

Log

This is a wrapper over Uber zap library that replaces the sugared logger.

Features:

• Syslog integration
• Automatic stacktraces for errors
• Context aware tracing ID
• Easy to use
• Fast!

Example:

logger, err := log.NewProduction(log.Config{
	Mode:  log.SyslogMode,
	Level: zapcore.InfoLevel,
	Encoding: log.JSONEncoding,
})
if err != nil {
	t.Fatal(err)
}
logger.Info(ctx, "Could not connect to database",
	"sleep", 5*time.Second,
	"error", errors.New("I/O error"),
)
logger.Named("sub").Error(ctx, "Unexpected error", "error", errors.New("unexpected"))

Benchmarks

Benchmark results of running against zap and zap sugared loggers on Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz.

BenchmarkZap-4                   2000000               978 ns/op             256 B/op          1 allocs/op
BenchmarkZapSugared-4            1000000              1353 ns/op             528 B/op          2 allocs/op
BenchmarkLogger-4                1000000              1167 ns/op             256 B/op          1 allocs/op