001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.component.servlet;
018
019 import java.util.HashSet;
020 import java.util.List;
021 import java.util.Map;
022 import java.util.Set;
023
024 import javax.servlet.Servlet;
025
026 import org.apache.camel.component.http.CamelServlet;
027 import org.apache.camel.component.http.HttpConsumer;
028 import org.slf4j.Logger;
029 import org.slf4j.LoggerFactory;
030
031 public class DefaultHttpRegistry implements HttpRegistry {
032 private static final transient Logger LOG = LoggerFactory.getLogger(DefaultHttpRegistry.class);
033
034 private static HttpRegistry singleton;
035
036 private final Set<HttpConsumer> consumers;
037 private final Set<CamelServlet> providers;
038
039 public DefaultHttpRegistry() {
040 consumers = new HashSet<HttpConsumer>();
041 providers = new HashSet<CamelServlet>();
042 }
043
044 /**
045 * Lookup or create a HttpRegistry
046 */
047 public static synchronized HttpRegistry getSingletonHttpRegistry() {
048 if (singleton == null) {
049 singleton = new DefaultHttpRegistry();
050 }
051 return singleton;
052 }
053
054 @Override
055 public void register(HttpConsumer consumer) {
056 LOG.debug("Registering consumer for path {} providers present: {}",
057 consumer.getPath(), providers.size());
058 consumers.add(consumer);
059 for (CamelServlet provider : providers) {
060 provider.connect(consumer);
061 }
062 }
063
064 @Override
065 public void unregister(HttpConsumer consumer) {
066 LOG.debug("Unregistering consumer for path {} ", consumer.getPath());
067 consumers.remove(consumer);
068 for (CamelServlet provider : providers) {
069 provider.disconnect(consumer);
070 }
071 }
072
073 @SuppressWarnings("rawtypes")
074 public void register(CamelServlet provider, Map properties) {
075 LOG.debug("Registering provider through OSGi service listener {}", properties);
076 CamelServlet camelServlet = (CamelServlet)provider;
077 camelServlet.setServletName((String) properties.get("servlet-name"));
078 register(camelServlet);
079 }
080
081 public void unregister(CamelServlet provider, Map<String, Object> properties) {
082 unregister((CamelServlet)provider);
083 }
084
085 @Override
086 public void register(CamelServlet provider) {
087 LOG.debug("Registering CamelServlet with name {} consumers present: {}",
088 provider.getServletName(), consumers.size());
089 providers.add(provider);
090 for (HttpConsumer consumer : consumers) {
091 provider.connect(consumer);
092 }
093 }
094
095 @Override
096 public void unregister(CamelServlet provider) {
097 providers.remove(provider);
098 }
099
100 public void setServlets(List<Servlet> servlets) {
101 providers.clear();
102 for (Servlet servlet : servlets) {
103 if (servlet instanceof CamelServlet) {
104 providers.add((CamelServlet) servlet);
105 }
106 }
107 }
108
109 }