org.openbaton.common.vnfm_sdk.amqp.AbstractVnfmSpringAmqp.java Source code

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Here is the source code for org.openbaton.common.vnfm_sdk.amqp.AbstractVnfmSpringAmqp.java

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/*
 * Copyright (c) 2015 Fraunhofer FOKUS
 * 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.openbaton.common.vnfm_sdk.amqp;

import com.google.gson.Gson;
import com.rabbitmq.client.*;
import org.openbaton.catalogue.nfvo.messages.Interfaces.NFVMessage;
import org.openbaton.common.vnfm_sdk.AbstractVnfm;
import org.openbaton.common.vnfm_sdk.VnfmHelper;
import org.openbaton.common.vnfm_sdk.amqp.configuration.RabbitConfiguration;
import org.openbaton.common.vnfm_sdk.exception.BadFormatException;
import org.openbaton.common.vnfm_sdk.exception.NotFoundException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.ApplicationListener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.event.ContextClosedEvent;

import java.io.IOException;
import java.util.Properties;

/**
 * Created by lto on 28/05/15.
 */
@SpringBootApplication
@ComponentScan(basePackages = "org.openbaton")
@ConfigurationProperties
public abstract class AbstractVnfmSpringAmqp extends AbstractVnfm
        implements ApplicationListener<ContextClosedEvent> {

    @Value("${spring.rabbitmq.host}")
    private String rabbitHost;

    @Autowired
    private Gson gson;
    @Autowired
    private ConfigurableApplicationContext context;

    public void onAction(String message) throws NotFoundException, BadFormatException {

        NFVMessage nfvMessage = gson.fromJson(message, NFVMessage.class);

        this.onAction(nfvMessage);
    }

    @Override
    protected void setup() {
        vnfmHelper = (VnfmHelper) context.getBean("vnfmSpringHelperRabbit");
        super.setup();
    }

    protected abstract void checkEmsStarted(String hostname) throws RuntimeException;

    @Override
    protected void unregister() {
        try {
            ((VnfmSpringHelperRabbit) vnfmHelper).sendMessageToQueue(RabbitConfiguration.queueName_vnfmUnregister,
                    vnfmManagerEndpoint);
        } catch (IllegalStateException e) {
            log.warn("Got exception while unregistering trying to do it manually");
            ConnectionFactory factory = new ConnectionFactory();

            factory.setHost(rabbitHost);
            Connection connection = null;
            try {
                connection = factory.newConnection();

                Channel channel = connection.createChannel();

                String message = gson.toJson(vnfmManagerEndpoint);
                channel.basicPublish("openbaton-exchange", RabbitConfiguration.queueName_vnfmUnregister,
                        MessageProperties.TEXT_PLAIN, message.getBytes("UTF-8"));
                log.debug("Sent '" + message + "'");

                channel.close();
                connection.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
        }
    }

    @Override
    protected void register() {
        ((VnfmSpringHelperRabbit) vnfmHelper).sendMessageToQueue(RabbitConfiguration.queueName_vnfmRegister,
                vnfmManagerEndpoint);
    }

    @Override
    public void onApplicationEvent(ContextClosedEvent event) {
        unregister();
    }
}