/*
* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* Licensed 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.wso2.carbon.event.application.deployer.internal;
import org.apache.axiom.om.impl.builder.StAXOMBuilder;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.component.ComponentContext;
import org.wso2.carbon.application.deployer.AppDeployerConstants;
import org.wso2.carbon.application.deployer.AppDeployerUtils;
import org.wso2.carbon.application.deployer.Feature;
import org.wso2.carbon.event.application.deployer.EventProcessingAppDeployer;
import org.wso2.carbon.application.deployer.handler.AppDeploymentHandler;
import java.io.InputStream;
import java.net.URL;
import java.util.List;
import java.util.Map;
/**
* @scr.component name="event.processing.application.deployer" immediate="true"
*/
public class EventProcessingAppDeployerDS {
private static Log log = LogFactory.getLog(EventProcessingAppDeployerDS.class);
private static Map<String, List<Feature>> requiredFeatures;
private static ServiceRegistration appHandlerRegistration;
public static Map<String, List<Feature>> getRequiredFeatures() {
return requiredFeatures;
}
protected void activate(ComponentContext ctxt) {
try {
// Register EventProcessing deployer as an OSGi service
EventProcessingAppDeployer cepDeployer = new EventProcessingAppDeployer();
appHandlerRegistration = ctxt.getBundleContext().registerService(
AppDeploymentHandler.class.getName(), cepDeployer, null);
// read required-features.xml
URL reqFeaturesResource = ctxt.getBundleContext().getBundle()
.getResource(AppDeployerConstants.REQ_FEATURES_XML);
if (reqFeaturesResource != null) {
InputStream xmlStream = reqFeaturesResource.openStream();
requiredFeatures = AppDeployerUtils
.readRequiredFeaturs(new StAXOMBuilder(xmlStream).getDocumentElement());
}
} catch (Throwable e) {
log.error("Failed to activate EventProcessing Application Deployer", e);
}
}
protected void deactivate(ComponentContext ctxt) {
// Unregister the OSGi service
if (appHandlerRegistration != null) {
appHandlerRegistration.unregister();
}
}
}