lbcd/rpcclient/log.go
Dave Collins 074b2374b8
Import btcrpcclient repo into rpcclient directory.
This commit contains the entire btcrpcclient repository along with
several changes needed to move all of the files into the rpcclient
directory in order to prepare it for merging.  This does NOT update btcd
or any of the other packages to use the new location as that will be
done separately.

- All import paths in the old btcrpcclient files have been changed to
  the new location
- All references to btcrpcclient as the package name have been changed to
  rpcclient
2017-08-15 19:51:58 -05:00

48 lines
1.4 KiB
Go

// Copyright (c) 2014-2017 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package rpcclient
import (
"github.com/btcsuite/btclog"
)
// log 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 log 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 UseLogger is called.
func DisableLog() {
log = btclog.Disabled
}
// UseLogger uses a specified Logger to output package logging info.
func UseLogger(logger btclog.Logger) {
log = logger
}
// LogClosure is a closure that can be printed with %v to be used to
// generate expensive-to-create data for a detailed log level and avoid doing
// the work if the data isn't printed.
type logClosure func() string
// String invokes the log closure and returns the results string.
func (c logClosure) String() string {
return c()
}
// newLogClosure returns a new closure over the passed function which allows
// it to be used as a parameter in a logging function that is only invoked when
// the logging level is such that the message will actually be logged.
func newLogClosure(c func() string) logClosure {
return logClosure(c)
}