[DEV-102] remove UseLogger from ffldb

database/driver.go

@@ -6,8 +6,6 @@ package database
 
 import (
 	"fmt"
-
-	"github.com/btcsuite/btclog"
 )
 
 // Driver defines a structure for backend drivers to use when they registered
@@ -26,9 +24,6 @@ type Driver struct {
 	// arguments to open the database.  This function must return
 	// ErrDbDoesNotExist if the database has not already been created.
 	Open func(args ...interface{}) (DB, error)
-
-	// UseLogger uses a specified Logger to output package logging info.
-	UseLogger func(logger btclog.Logger)
 }
 
 // driverList holds all of the registered database backends.

database/ffldb/driver.go

@@ -9,11 +9,8 @@ import (
 
 	"github.com/daglabs/btcd/database"
 	"github.com/daglabs/btcd/wire"
-	"github.com/btcsuite/btclog"
 )
 
-var log = btclog.Disabled
-
 const (
 	dbType = "ffldb"
 )
@@ -63,19 +60,12 @@ func createDBDriver(args ...interface{}) (database.DB, error) {
 	return openDB(dbPath, network, true)
 }
 
-// useLogger is the callback provided during driver registration that sets the
-// current logger to the provided one.
-func useLogger(logger btclog.Logger) {
-	log = logger
-}
-
 func init() {
 	// Register the driver.
 	driver := database.Driver{
-		DbType:    dbType,
-		Create:    createDBDriver,
-		Open:      openDBDriver,
-		UseLogger: useLogger,
+		DbType: dbType,
+		Create: createDBDriver,
+		Open:   openDBDriver,
 	}
 	if err := database.RegisterDriver(driver); err != nil {
 		panic(fmt.Sprintf("Failed to regiser database driver '%s': %v",

database/ffldb/log.go

@@ -0,0 +1,20 @@
+// Copyright (c) 2013-2016 The btcsuite developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package ffldb
+
+import (
+	"github.com/btcsuite/btclog"
+	"github.com/daglabs/btcd/logger"
+)
+
+// 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() {
+	log, _ = logger.Get(logger.SubsystemTags.BCDB)
+}

database/log.go

@@ -17,10 +17,4 @@ var log btclog.Logger
 // The default amount of logging is none.
 func init() {
 	log, _ = logger.Get(logger.SubsystemTags.BCDB)
-	// Update the logger for the registered drivers.
-	for _, drv := range drivers {
-		if drv.UseLogger != nil {
-			drv.UseLogger(log)
-		}
-	}
 }