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 org.apache.ambari.server.controller.jmx;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ambari.server.configuration.ComponentSSLConfiguration;
  import org.apache.ambari.server.controller.internal.URLStreamProvider;
  
  public class TestStreamProvider extends URLStreamProvider {
  
    protected static Map<String, String> FILE_MAPPING = new HashMap<>();
  
    static {
      FILE_MAPPING.put("50070", "hdfs_namenode_jmx.json");
      FILE_MAPPING.put("50075", "hdfs_datanode_jmx.json");
      FILE_MAPPING.put("50030", "mapreduce_jobtracker_jmx.json");
      FILE_MAPPING.put("50060", "mapreduce_tasktracker_jmx.json");
      FILE_MAPPING.put("60010", "hbase_hbasemaster_jmx.json");
      FILE_MAPPING.put("60011", "hbase_hbasemaster_jmx_2.json");
      FILE_MAPPING.put("8088",  "resourcemanager_jmx.json");
      FILE_MAPPING.put("8480",  "hdfs_journalnode_jmx.json");
      FILE_MAPPING.put("8745",  "storm_rest_api_jmx.json");
    }
  
    private static String NN_HASTATE_ONLY_JMX = "hdfs_namenode_jmx_ha_only.json";
  
    /**
     * Delay to simulate response time.
     */
    protected final long delay;
  
    private String lastSpec;
    private List<String> specs = new ArrayList<>();
  
    private boolean isLastSpecUpdated;
  
    public TestStreamProvider() {
      super(1000, 1000, ComponentSSLConfiguration.instance());
      delay = 0;
    }
  
    public TestStreamProvider(long delay) {
      super(1000, 1000, ComponentSSLConfiguration.instance());
      this.delay = delay;
    }
  
    @Override
    public InputStream readFrom(String spec) throws IOException {
      specs.add(spec);
      if (!isLastSpecUpdated)
        lastSpec = spec;
      
      isLastSpecUpdated = false;
  
      String filename = null;
      if (spec.endsWith(":50070/jmx?get=Hadoop:service=NameNode,name=FSNamesystem::tag.HAState")) {
        filename = NN_HASTATE_ONLY_JMX;
      } else {
        filename = FILE_MAPPING.get(getPort(spec));
      }
  
      if (filename == null) {
        throw new IOException("Can't find JMX source for " + spec);
      }
      if (delay > 0) {
        try {
          Thread.sleep(delay);
        } catch (InterruptedException e) {
          // do nothing
        }
      }
  
      return ClassLoader.getSystemResourceAsStream(filename);
    }
  
    public String getLastSpec() {
      return lastSpec;
    }
  
    public List<String> getSpecs() {
      return specs;
    }
  
    private String getPort(String spec) {
      int colonIndex = spec.indexOf(":", 5);
      int slashIndex = spec.indexOf("/", colonIndex);
  
      return spec.substring(colonIndex + 1, slashIndex);
    }
  
    @Override
    public InputStream readFrom(String spec, String requestMethod, String params) throws IOException {
      lastSpec = spec + "?" + params;
      isLastSpecUpdated = true;
      return readFrom(spec);
    }
  }
  