code: /*
   * 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.hadoop.yarn.server.resourcemanager.monitor.capacity.mockframework;
  
  import org.apache.hadoop.yarn.api.records.NodeId;
  import org.apache.hadoop.yarn.api.records.Resource;
  import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer;
  import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerNode;
  import org.apache.hadoop.yarn.util.resource.Resources;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import static org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.mockframework.ProportionalCapacityPreemptionPolicyMockFramework.parseResourceFromString;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  class MockSchedulerNodes {
    private static final Logger LOG = LoggerFactory.getLogger(MockSchedulerNodes.class);
    private String config;
    private Map<NodeId, FiCaSchedulerNode> nodeIdToSchedulerNodes = new HashMap<>();
  
    MockSchedulerNodes(String config) {
      this.config = config;
      init();
    }
  
    /**
     * Format is:
     * host1=partition[ res=resource];
     * host2=partition[ res=resource];
     */
    private void init() {
      String[] nodesConfigStrArray = config.split(";");
      for (String p : nodesConfigStrArray) {
        String[] arr = p.split(" ");
  
        NodeId nodeId = NodeId.newInstance(arr[0].substring(0, arr[0].indexOf("=")), 1);
        String partition = arr[0].substring(arr[0].indexOf("=") + 1);
  
        FiCaSchedulerNode sn = mock(FiCaSchedulerNode.class);
        when(sn.getNodeID()).thenReturn(nodeId);
        when(sn.getPartition()).thenReturn(partition);
  
        Resource totalRes = Resources.createResource(0);
        if (arr.length > 1) {
          String res = arr[1];
          if (res.contains("res=")) {
            String resString = res.substring(
                res.indexOf("res=") + "res=".length());
            totalRes = parseResourceFromString(resString);
          }
        }
        when(sn.getTotalResource()).thenReturn(totalRes);
        when(sn.getUnallocatedResource()).thenReturn(Resources.clone(totalRes));
  
        // TODO, add settings of killable resources when necessary
        when(sn.getTotalKillableResources()).thenReturn(Resources.none());
  
        List<RMContainer> liveContainers = new ArrayList<>();
        when(sn.getCopiedListOfRunningContainers()).thenReturn(liveContainers);
  
        nodeIdToSchedulerNodes.put(nodeId, sn);
  
        LOG.debug("add scheduler node, id=" + nodeId + ", partition=" + partition);
      }
    }
  
    Map<NodeId, FiCaSchedulerNode> getNodeIdToSchedulerNodes() {
      return nodeIdToSchedulerNodes;
    }
  }
  