| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.distributedlog.service.config; |
| |
| import com.google.common.base.Optional; |
| |
| import org.apache.distributedlog.config.DynamicDistributedLogConfiguration; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * For all streams return an absent configuration. |
| */ |
| public class NullStreamConfigProvider implements StreamConfigProvider { |
| static final Logger LOG = LoggerFactory.getLogger(NullStreamConfigProvider.class); |
| |
| private static final Optional<DynamicDistributedLogConfiguration> nullConf = |
| Optional.<DynamicDistributedLogConfiguration>absent(); |
| |
| @Override |
| public Optional<DynamicDistributedLogConfiguration> getDynamicStreamConfig(String streamName) { |
| return nullConf; |
| } |
| } |