/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. 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. For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.abdera.protocol.server;
import java.util.Map;
import org.apache.abdera.Abdera;
import org.apache.abdera.i18n.text.Localizer;
import org.apache.abdera.protocol.server.impl.DefaultProvider;
import org.apache.abdera.util.ServiceUtil;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* The ServiceManager is used by the AbderaServlet to bootstrap the server
* instance. There should be little to no reason why an end user would need
* to use this class directly.
*/
public class ServiceManager {
public static final String PROVIDER =
"org.apache.abdera.protocol.server.Provider";
private final static Log log = LogFactory.getLog(ServiceManager.class);
private static ServiceManager INSTANCE = null;
private static Abdera abdera = null;
ServiceManager() {}
public static synchronized ServiceManager getInstance() {
if (INSTANCE == null) {
log.debug(Localizer.sprintf("CREATING.NEW.INSTANCE","ServiceManager"));
INSTANCE = new ServiceManager();
}
return INSTANCE;
}
public static synchronized Abdera getAbdera() {
if (abdera == null) {
log.debug(Localizer.sprintf("CREATING.NEW.INSTANCE","Abdera"));
abdera = new Abdera();
}
return abdera;
}
public Provider newProvider (
Map<String,String> properties) {
Abdera abdera = getAbdera();
String instance = properties.get(PROVIDER);
log.debug(Localizer.sprintf("CREATING.NEW.INSTANCE","Provider"));
Provider provider =
(Provider) ServiceUtil.newInstance(
PROVIDER,
(instance != null) ?
instance :
DefaultProvider.class.getName(),
abdera);
log.debug(Localizer.sprintf("INITIALIZING.INSTANCE", "Provider"));
provider.init(abdera, properties);
return provider;
}
}