lnd.xprv/peer/log.go

41 lines
1.0 KiB
Go

package peer
import (
"github.com/btcsuite/btclog"
"github.com/lightningnetwork/lnd/build"
)
// peerLog is a logger that is initialized with the btclog.Disabled logger.
var peerLog btclog.Logger
// The default amount of logging is none.
func init() {
UseLogger(build.NewSubLogger("PEER", nil))
}
// DisableLog disables all logging output.
func DisableLog() {
UseLogger(btclog.Disabled)
}
// UseLogger uses a specified Logger to output package logging info.
func UseLogger(logger btclog.Logger) {
peerLog = logger
}
// logClosure is used to provide a closure over expensive logging operations
// so they aren't performed when the logging level doesn't warrant it.
type logClosure func() string
// String invokes the underlying function and returns the result.
func (c logClosure) String() string {
return c()
}
// newLogClosure returns a new closure over a function that returns a string
// which itself provides a Stringer interface so that it can be used with the
// logging system.
func newLogClosure(c func() string) logClosure {
return logClosure(c)
}