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package log
import (
"os"
)
var (
root = &logger{[]interface{}{}, new(swapHandler)}
StdoutHandler = StreamHandler(os.Stdout, LogfmtFormat())
StderrHandler = StreamHandler(os.Stderr, LogfmtFormat())
)
func init() {
root.SetHandler(DiscardHandler())
}
// New returns a new logger with the given context.
// New is a convenient alias for Root().New
func New(ctx ...interface{}) Logger {
return root.New(ctx...)
}
// Root returns the root logger
func Root() Logger {
return root
}
// The following functions bypass the exported logger methods (logger.Debug,
// etc.) to keep the call depth the same for all paths to logger.write so
// runtime.Caller(2) always refers to the call site in client code.
// Trace is a convenient alias for Root().Trace
func Trace(msg string, ctx ...interface{}) {
root.write(msg, LvlTrace, ctx, skipLevel)
}
// Debug is a convenient alias for Root().Debug
func Debug(msg string, ctx ...interface{}) {
root.write(msg, LvlDebug, ctx, skipLevel)
}
// Info is a convenient alias for Root().Info
func Info(msg string, ctx ...interface{}) {
root.write(msg, LvlInfo, ctx, skipLevel)
}
// Warn is a convenient alias for Root().Warn
func Warn(msg string, ctx ...interface{}) {
root.write(msg, LvlWarn, ctx, skipLevel)
}
// Error is a convenient alias for Root().Error
func Error(msg string, ctx ...interface{}) {
root.write(msg, LvlError, ctx, skipLevel)
}
// Crit is a convenient alias for Root().Crit
func Crit(msg string, ctx ...interface{}) {
root.write(msg, LvlCrit, ctx, skipLevel)
os.Exit(1)
}
// Output is a convenient alias for write, allowing for the modification of
// the calldepth (number of stack frames to skip).
// calldepth influences the reported line number of the log message.
// A calldepth of zero reports the immediate caller of Output.
// Non-zero calldepth skips as many stack frames.
func Output(msg string, lvl Lvl, calldepth int, ctx ...interface{}) {
root.write(msg, lvl, ctx, calldepth+skipLevel)
}