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/*
 *
 * Copyright (c) 2016-2017 Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/master/LICENSE.txt
 * See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
package fish.payara.notification.jms;

import com.google.common.base.Strings;
import com.google.common.eventbus.Subscribe;
import fish.payara.nucleus.notification.configuration.JmsNotifier;
import fish.payara.nucleus.notification.configuration.NotifierType;
import fish.payara.nucleus.notification.service.QueueBasedNotifierService;
import org.glassfish.api.StartupRunLevel;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Service;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.naming.NoInitialContextException;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * @author mertcaliskan
 */
@Service(name = "service-jms")
@RunLevel(StartupRunLevel.VAL)
public class JmsNotifierService extends QueueBasedNotifierService {

    private static final Logger logger = Logger.getLogger(JmsNotifierService.class.getCanonicalName());

    private JmsNotifierConfigurationExecutionOptions executionOptions;

    JmsNotifierService() {
        super("jms-message-consumer-");
    }

    @Override
    public void bootstrap() {
        register(NotifierType.JMS, JmsNotifier.class, JmsNotifierConfiguration.class, this);

        try {
            executionOptions = (JmsNotifierConfigurationExecutionOptions) getNotifierConfigurationExecutionOptions();

            if (executionOptions != null && executionOptions.isEnabled()) {
                initializeExecutor();

                final Properties env = new Properties();
                if (!Strings.isNullOrEmpty(executionOptions.getContextFactoryClass())) {
                    env.put(Context.INITIAL_CONTEXT_FACTORY, executionOptions.getContextFactoryClass());
                }
                if (!Strings.isNullOrEmpty(executionOptions.getUrl())) {
                    env.put(Context.PROVIDER_URL, executionOptions.getUrl());
                }
                if (!Strings.isNullOrEmpty(executionOptions.getUsername())) {
                    env.put(Context.SECURITY_PRINCIPAL, executionOptions.getUsername());
                }
                if (!Strings.isNullOrEmpty(executionOptions.getPassword())) {
                    env.put(Context.SECURITY_CREDENTIALS, executionOptions.getPassword());
                }
                if (!Strings.isNullOrEmpty(executionOptions.getConnectionFactoryName())) {
                    try {
                        InitialContext ctx = new InitialContext(env);
                        ConnectionFactory connectionFactory =
                                (ConnectionFactory) ctx.lookup(executionOptions.getConnectionFactoryName());
                        Connection connection = connectionFactory.createConnection();
                        scheduleExecutor(new JmsNotificationRunnable(queue, executionOptions, connection));
                    }
                    catch (NoInitialContextException e) {
                        if (e.getRootCause() instanceof ClassNotFoundException) {
                            logger.log(Level.SEVERE, "Context factory class cannot be found on classpath: " + executionOptions.getContextFactoryClass());
                        }
                    }
                }
            }
        }
        catch (NamingException e) {
            logger.log(Level.SEVERE, "Cannot lookup JMS resources", e);
        } catch (JMSException e) {
            logger.log(Level.SEVERE, "Cannot create JMS connection", e);

        }
    }

    @Override
    @Subscribe
    public void handleNotification(JmsNotificationEvent event) {
        if (executionOptions != null && executionOptions.isEnabled()) {
            JmsMessage message = new JmsMessage(event, event.getSubject(), event.getMessage());
            queue.addMessage(message);
        }
    }
}