dataset: add logger

dataset/log.go

@@ -0,0 +1,26 @@
+package dataset
+
+import (
+	"github.com/btcsuite/btclog"
+	"github.com/lightningnetwork/lnd/build"
+)
+
+// Subsystem defines the logging code for this subsystem.
+const Subsystem = "DSET"
+
+// 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() {
+	UseLogger(build.NewSubLogger(Subsystem, nil))
+}
+
+// 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
+}

log.go

@@ -2,6 +2,7 @@ package terminator
 
 import (
 	"github.com/btcsuite/btclog"
+	"github.com/lightninglabs/terminator/dataset"
 	"github.com/lightninglabs/terminator/recommend"
 	"github.com/lightningnetwork/lnd/build"
 )
@@ -22,6 +23,7 @@ var (
 func init() {
 	setSubLogger(Subsystem, log, nil)
 	addSubLogger(recommend.Subsystem, recommend.UseLogger)
+	addSubLogger(dataset.Subsystem, dataset.UseLogger)
 }
 
 // UseLogger uses a specified Logger to output package logging info.