swarm/shed: push metrics prefix up

swarm/shed/db.go

@@ -63,7 +63,8 @@ type DB struct {
 
 // NewDB constructs a new DB and validates the schema
 // if it exists in database on the given path.
-func NewDB(path string) (db *DB, err error) {
+// prefix is used for metrics collection for the given DB.
+func NewDB(path string, prefix string) (db *DB, err error) {
 	ldb, err := leveldb.OpenFile(path, &opt.Options{
 		OpenFilesCacheCapacity: openFileLimit,
 	})
@@ -88,7 +89,7 @@ func NewDB(path string) (db *DB, err error) {
 		}
 	}
 
-	db.Meter("shed/db")
+	db.Meter(prefix)
 
 	return db, nil
 }

swarm/shed/db_test.go

@@ -55,7 +55,7 @@ func TestDB_persistence(t *testing.T) {
 	}
 	defer os.RemoveAll(dir)
 
-	db, err := NewDB(dir)
+	db, err := NewDB(dir, "")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -73,7 +73,7 @@ func TestDB_persistence(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	db2, err := NewDB(dir)
+	db2, err := NewDB(dir, "")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -101,7 +101,7 @@ func newTestDB(t *testing.T) (db *DB, cleanupFunc func()) {
 		t.Fatal(err)
 	}
 	cleanupFunc = func() { os.RemoveAll(dir) }
-	db, err = NewDB(dir)
+	db, err = NewDB(dir, "")
 	if err != nil {
 		cleanupFunc()
 		t.Fatal(err)

swarm/shed/example_store_test.go

@@ -52,7 +52,7 @@ type Store struct {
 // and possible conflicts with schema from existing database is checked
 // automatically.
 func New(path string) (s *Store, err error) {
-	db, err := shed.NewDB(path)
+	db, err := shed.NewDB(path, "")
 	if err != nil {
 		return nil, err
 	}