content: /**
   * 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 com.alibaba.jstorm.metric;
  
  import com.alibaba.jstorm.common.metric.MetricMeta;
  import com.alibaba.jstorm.common.metric.TaskTrack;
  import com.alibaba.jstorm.common.metric.TopologyHistory;
  import com.google.common.collect.Lists;
  
  import java.util.List;
  import java.util.Map;
  
  /**
   * a dummy metric query client implementation
   *
   * @author Cody (weiyue.wy@alibaba-inc.com)
   * @since 2.0.5
   */
  public class DefaultMetricQueryClient implements MetricQueryClient {
      @Override
      public void init(Map conf) {
      }
  
      @Override
      public boolean isInited() {
          return true;
      }
  
      @Override
      public String getIdentity(Map conf) {
          return getClass().getCanonicalName();
      }
  
      @Override
      public List<MetricMeta> getMetricMeta(String clusterName, String topologyId, MetaType type, MetaFilter filter, Object arg) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<MetricMeta> getMetricMeta(String clusterName, String topologyId, MetaType type) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<MetricMeta> getWorkerMeta(String clusterName, String topologyId) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<MetricMeta> getNettyMeta(String clusterName, String topologyId) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<MetricMeta> getTaskMeta(String clusterName, String topologyId, int taskId) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<MetricMeta> getComponentMeta(String clusterName, String topologyId, String componentId) {
          return Lists.newArrayList();
      }
  
      @Override
      public MetricMeta getMetricMeta(String clusterName, String topologyId, MetaType metaType, String metricId) {
          return new MetricMeta();
      }
  
      @Override
      public MetricMeta getMetricMeta(String key) {
          return new MetricMeta();
      }
  
      @Override
      public List<Object> getMetricData(String metricId, MetricType metricType, int win, long start, long end) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<Object> getMetricData(String metricId, MetricType metricType, int win, long start, long end, int size) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<TaskTrack> getTaskTrack(String clusterName, String topologyId) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<TaskTrack> getTaskTrack(String clusterName, String topologyId, int taskId) {
          return Lists.newArrayList();
      }
  
      @Override
      public List<TopologyHistory> getTopologyHistory(String clusterName, String topologyName, int size) {
          return Lists.newArrayList();
      }
  
      @Override
      public void deleteMeta(MetricMeta meta) {
      }
  
      @Override
      public void deleteMeta(List<MetricMeta> metaList) {
      }
  }
  