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.camel.component.undertow.handlers;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.locks.Lock;
  import java.util.concurrent.locks.ReentrantLock;
  
  import io.undertow.server.HttpHandler;
  import io.undertow.server.handlers.PathHandler;
  
  /**
   * Extended PathHandler to monitor add/remove handlers.
   */
  public class CamelPathHandler extends PathHandler {
      private final Lock lock = new ReentrantLock();
      private final Map<String, HttpHandler> handlers = new HashMap<>();
      private String handlerString;
  
      public CamelPathHandler(HttpHandler defaultHandler) {
          super(defaultHandler);
      }
  
      @Override
      public PathHandler addPrefixPath(final String path, final HttpHandler handler) {
          lock.lock();
          try {
              super.addPrefixPath(path, handler);
              handlers.put(path, handler);
              handlerString = null;
              return this;
          } finally {
              lock.unlock();
          }
      }
  
      @Override
      public PathHandler addExactPath(final String path, final HttpHandler handler) {
          lock.lock();
          try {
              super.addExactPath(path, handler);
              handlers.put(path, handler);
              handlerString = null;
              return this;
          } finally {
              lock.unlock();
          }
      }
  
      @Override
      public PathHandler removePrefixPath(final String path) {
          lock.lock();
          try {
              super.removePrefixPath(path);
              handlers.remove(path);
              handlerString = null;
              return this;
          } finally {
              lock.unlock();
          }
      }
  
      @Override
      public PathHandler removeExactPath(final String path) {
          lock.lock();
          try {
              super.removeExactPath(path);
              handlers.remove(path);
              handlerString = null;
              return this;
          } finally {
              lock.unlock();
          }
      }
  
      public HttpHandler getHandler(String path) {
          return handlers.get(path);
      }
  
      public boolean isEmpty() {
          return handlers.isEmpty();
      }
  
      @Override
      public String toString() {
          if (handlerString == null) {
              handlerString = "CamelPathHandler[" + handlers + "]";
          }
          return handlerString;
      }
  
  }
  