mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-16 00:41:24 +01:00
34 lines
1.4 KiB
Go
34 lines
1.4 KiB
Go
// Package level implements leveled logging on top of Go kit's log package. To
|
|
// use the level package, create a logger as per normal in your func main, and
|
|
// wrap it with level.NewFilter.
|
|
//
|
|
// var logger log.Logger
|
|
// logger = log.NewLogfmtLogger(os.Stderr)
|
|
// logger = level.NewFilter(logger, level.AllowInfo()) // <--
|
|
// logger = log.With(logger, "ts", log.DefaultTimestampUTC)
|
|
//
|
|
// It's also possible to configure log level from a string. For instance from
|
|
// a flag, environment variable or configuration file.
|
|
//
|
|
// fs := flag.NewFlagSet("myprogram")
|
|
// lvl := fs.String("log", "info", "debug, info, warn, error")
|
|
//
|
|
// var logger log.Logger
|
|
// logger = log.NewLogfmtLogger(os.Stderr)
|
|
// logger = level.NewFilter(logger, level.Allow(level.ParseDefault(*lvl, level.InfoValue()))) // <--
|
|
// logger = log.With(logger, "ts", log.DefaultTimestampUTC)
|
|
//
|
|
// Then, at the callsites, use one of the level.Debug, Info, Warn, or Error
|
|
// helper methods to emit leveled log events.
|
|
//
|
|
// logger.Log("foo", "bar") // as normal, no level
|
|
// level.Debug(logger).Log("request_id", reqID, "trace_data", trace.Get())
|
|
// if value > 100 {
|
|
// level.Error(logger).Log("value", value)
|
|
// }
|
|
//
|
|
// NewFilter allows precise control over what happens when a log event is
|
|
// emitted without a level key, or if a squelched level is used. Check the
|
|
// Option functions for details.
|
|
package level
|