Added RocksDBOptions struct

opendb_rocksdb.go

@@ -77,6 +77,21 @@ const (
 	asyncIOReadOptName = "rocksdb.read-async-io"
 )
 
+type RocksDBOptions struct {
+	appOpts AppOptions
+	dbName  string
+}
+
+func (opts *RocksDBOptions) Get(key string) interface{} {
+	dbSpecificKey := fmt.Sprintf("rocksdb.%v.%v", opts.dbName, key)
+	if opts.appOpts.Get(dbSpecificKey) != nil {
+		return opts.appOpts.Get(dbSpecificKey)
+	}
+
+	fallbackKey := fmt.Sprintf("rocksdb.%v", key)
+	return opts.appOpts.Get(fallbackKey)
+}
+
 // AppOptions is the same interface as provided by cosmos-sdk, see for details:
 // https://github.com/cosmos/cosmos-sdk/blob/10465a6aabdfc9119ff187ac3ef229f33c06ab45/server/types/app.go#L29-L31
 // We added it here to avoid cosmos-sdk dependency.