73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package lnwallet
|
|
|
|
import (
|
|
"errors"
|
|
"io"
|
|
|
|
"github.com/btcsuite/btclog"
|
|
btcwallet "github.com/roasbeef/btcwallet/wallet"
|
|
)
|
|
|
|
// walletLog is a logger that is initialized with no output filters. This
|
|
// means the package will not perform any logging by default until the caller
|
|
// requests it.
|
|
var walletLog btclog.Logger
|
|
|
|
// The default amount of logging is none.
|
|
func init() {
|
|
DisableLog()
|
|
}
|
|
|
|
// DisableLog disables all library log output. Logging output is disabled
|
|
// by default until either UseLogger or SetLogWriter are called.
|
|
func DisableLog() {
|
|
walletLog = btclog.Disabled
|
|
}
|
|
|
|
// UseLogger uses a specified Logger to output package logging info.
|
|
// This should be used in preference to SetLogWriter if the caller is also
|
|
// using btclog.
|
|
func UseLogger(logger btclog.Logger) {
|
|
walletLog = logger
|
|
btcwallet.UseLogger(logger)
|
|
}
|
|
|
|
// SetLogWriter uses a specified io.Writer to output package logging info.
|
|
// This allows a caller to direct package logging output without needing a
|
|
// dependency on seelog. If the caller is also using btclog, UseLogger should
|
|
// be used instead.
|
|
func SetLogWriter(w io.Writer, level string) error {
|
|
if w == nil {
|
|
return errors.New("nil writer")
|
|
}
|
|
|
|
lvl, ok := btclog.LogLevelFromString(level)
|
|
if !ok {
|
|
return errors.New("invalid log level")
|
|
}
|
|
|
|
l, err := btclog.NewLoggerFromWriter(w, lvl)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
UseLogger(l)
|
|
return nil
|
|
}
|
|
|
|
// logClosure is used to provide a closure over expensive logging operations
|
|
// so don't have to be 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)
|
|
}
|