From 3aa8f7a6b996ce73e34d67636116ad171fdcebdf Mon Sep 17 00:00:00 2001
From: Conner Fromknecht <conner@mit.edu>
Date: Thu, 14 Jun 2018 20:15:47 -0700
Subject: [PATCH] signal/log: adds signal logger

---
 signal/log.go | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 signal/log.go

diff --git a/signal/log.go b/signal/log.go
new file mode 100644
index 00000000..e7034321
--- /dev/null
+++ b/signal/log.go
@@ -0,0 +1,26 @@
+package signal
+
+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.
+// This should be used in preference to SetLogWriter if the caller is also
+// using btclog.
+func UseLogger(logger btclog.Logger) {
+	log = logger
+}