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log.go
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log.go
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package node
import (
"sync"
"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 either UseLogger or SetLogWriter are called.
func DisableLog() {
log = 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) {
log = logger
}
func GetLogger() btclog.Logger {
return log
}
var loggedStrings = map[string]bool{} // is this gonna get too large?
var loggedStringsMutex sync.Mutex
func LogOnce(s string) {
loggedStringsMutex.Lock()
defer loggedStringsMutex.Unlock()
if loggedStrings[s] {
return
}
loggedStrings[s] = true
log.Info(s)
}
func Log(s string) {
log.Info(s)
}
func Warn(s string) {
log.Warn(s)
}