content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * Licensed 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 com.alibaba.otter.shared.arbitrate.impl.config;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  
  import com.alibaba.otter.shared.common.model.config.channel.Channel;
  import com.alibaba.otter.shared.common.model.config.node.Node;
  import com.alibaba.otter.shared.common.model.config.pipeline.Pipeline;
  
  /**
   * 配置操作聚合类，方便mock
   * 
   * @author jianghang 2011-9-27 下午08:27:04
   * @version 4.0.0
   */
  public class ArbitrateConfigUtils {
  
      /**
       * 获取当前节点的nid信息
       */
      public static Long getCurrentNid() {
          Node node = ArbitrateConfigRegistry.getConfig().currentNode();
          if (node != null) {
              return node.getId();
          } else {
              return null;
          }
      }
  
      /**
       * 获取对应Node的zk集群列表配置
       */
      public static List<String> getServerAddrs() {
          Node node = ArbitrateConfigRegistry.getConfig().currentNode();
          if (node != null) {
              String addr = StringUtils.join(node.getParameters().getZkCluster().getServerList(), ',');
              return Arrays.asList(addr);
          } else {
              return new ArrayList<String>();
          }
      }
  
      /**
       * 获取task配置中定义的pipeline
       */
      public static Pipeline getPipeline(Long pipelineId) {
          return ArbitrateConfigRegistry.getConfig().findPipeline(pipelineId);
      }
  
      /**
       * 根据pipelineId获取task配置中定义的反向的pipeline
       */
      public static Pipeline getOppositePipeline(Long pipelineId) {
          return ArbitrateConfigRegistry.getConfig().findOppositePipeline(pipelineId);
      }
  
      /**
       * 根据pipelineId获取task配置中定义的channel
       */
      public static Channel getChannel(Long pipelineId) {
          return ArbitrateConfigRegistry.getConfig().findChannelByPipelineId(pipelineId);
      }
  
      /**
       * 根据channelId获取task配置中定义的channel
       * 
       * @return
       */
      public static Channel getChannelByChannelId(Long channelId) {
          return ArbitrateConfigRegistry.getConfig().findChannel(channelId);
      }
  
      /**
       * 返回并行度
       */
      public static int getParallelism(Long pipelineId) {
          return ArbitrateConfigRegistry.getConfig().findPipeline(pipelineId).getParameters().getParallelism().intValue();
      }
  
      /**
       * 根据nid查询node信息
       */
      public static Node findNode(Long nid) {
          return ArbitrateConfigRegistry.getConfig().findNode(nid);
      }
  }
  