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log: improve documentation (#26753)

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Add usage examples
This commit is contained in:
Daniel Liu 2024-11-15 10:02:42 +08:00
parent ed4f989ff3
commit 5eca853e52
2 changed files with 95 additions and 1 deletions
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48
log/logger.go
View file

@ -115,12 +115,58 @@ type Logger interface {
// SetHandler updates the logger to write records to the specified handler.
SetHandler(h Handler)
// Log a message at the given level with context key/value pairs
// Log a message at the trace level with context key/value pairs
//
// # Usage
//
// log.Trace("msg")
// log.Trace("msg", "key1", val1)
// log.Trace("msg", "key1", val1, "key2", val2)
Trace(msg string, ctx ...interface{})
// Log a message at the debug level with context key/value pairs
//
// # Usage Examples
//
// log.Debug("msg")
// log.Debug("msg", "key1", val1)
// log.Debug("msg", "key1", val1, "key2", val2)
Debug(msg string, ctx ...interface{})
// Log a message at the info level with context key/value pairs
//
// # Usage Examples
//
// log.Info("msg")
// log.Info("msg", "key1", val1)
// log.Info("msg", "key1", val1, "key2", val2)
Info(msg string, ctx ...interface{})
// Log a message at the warn level with context key/value pairs
//
// # Usage Examples
//
// log.Warn("msg")
// log.Warn("msg", "key1", val1)
// log.Warn("msg", "key1", val1, "key2", val2)
Warn(msg string, ctx ...interface{})
// Log a message at the error level with context key/value pairs
//
// # Usage Examples
//
// log.Error("msg")
// log.Error("msg", "key1", val1)
// log.Error("msg", "key1", val1, "key2", val2)
Error(msg string, ctx ...interface{})
// Log a message at the crit level with context key/value pairs, and then exit.
//
// # Usage Examples
//
// log.Crit("msg")
// log.Crit("msg", "key1", val1)
// log.Crit("msg", "key1", val1, "key2", val2)
Crit(msg string, ctx ...interface{})
}

48
log/root.go
View file

@ -30,31 +30,79 @@ func Root() Logger {
// runtime.Caller(2) always refers to the call site in client code.
// Trace is a convenient alias for Root().Trace
//
// Log a message at the trace level with context key/value pairs
//
// # Usage
//
// log.Trace("msg")
// log.Trace("msg", "key1", val1)
// log.Trace("msg", "key1", val1, "key2", val2)
func Trace(msg string, ctx ...interface{}) {
root.write(msg, LvlTrace, ctx)
}
// Debug is a convenient alias for Root().Debug
//
// Log a message at the debug level with context key/value pairs
//
// # Usage Examples
//
// log.Debug("msg")
// log.Debug("msg", "key1", val1)
// log.Debug("msg", "key1", val1, "key2", val2)
func Debug(msg string, ctx ...interface{}) {
root.write(msg, LvlDebug, ctx)
}
// Info is a convenient alias for Root().Info
//
// Log a message at the info level with context key/value pairs
//
// # Usage Examples
//
// log.Info("msg")
// log.Info("msg", "key1", val1)
// log.Info("msg", "key1", val1, "key2", val2)
func Info(msg string, ctx ...interface{}) {
root.write(msg, LvlInfo, ctx)
}
// Warn is a convenient alias for Root().Warn
//
// Log a message at the warn level with context key/value pairs
//
// # Usage Examples
//
// log.Warn("msg")
// log.Warn("msg", "key1", val1)
// log.Warn("msg", "key1", val1, "key2", val2)
func Warn(msg string, ctx ...interface{}) {
root.write(msg, LvlWarn, ctx)
}
// Error is a convenient alias for Root().Error
//
// Log a message at the error level with context key/value pairs
//
// # Usage Examples
//
// log.Error("msg")
// log.Error("msg", "key1", val1)
// log.Error("msg", "key1", val1, "key2", val2)
func Error(msg string, ctx ...interface{}) {
root.write(msg, LvlError, ctx)
}
// Crit is a convenient alias for Root().Crit
//
// Log a message at the crit level with context key/value pairs, and then exit.
//
// # Usage Examples
//
// log.Crit("msg")
// log.Crit("msg", "key1", val1)
// log.Crit("msg", "key1", val1, "key2", val2)
func Crit(msg string, ctx ...interface{}) {
root.write(msg, LvlCrit, ctx)
os.Exit(1)