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

Introduction

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

Source

/*
 * Copyright (c) 2016 Open Baton (http://www.openbaton.org)
 *
 * 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 org.openbaton.catalogue.nfvo.messages.Interfaces.NFVMessage;
import org.openbaton.common.vnfm_sdk.VnfmHelper;
import org.openbaton.common.vnfm_sdk.amqp.configuration.RabbitConfiguration;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.io.Serializable;
import java.util.concurrent.TimeoutException;

import javax.annotation.PostConstruct;

/**
 * Created by lto on 23/09/15.
 */
@Service
@Scope
@ConfigurationProperties
public class VnfmSpringHelperRabbit extends VnfmHelper {

    @Autowired
    private Gson gson;

    @Value("${vnfm.rabbitmq.autodelete}")
    private boolean autodelete = true;

    @Value("${vnfm.rabbitmq.durable}")
    private boolean durable;

    @Value("${vnfm.rabbitmq.exclusive}")
    private boolean exclusive;

    @Autowired
    private RabbitTemplate rabbitTemplate;

    private RabbitAdmin rabbitAdmin;

    @Autowired
    private ConnectionFactory connectionFactory;

    @Value("${vnfm.rabbitmq.sar.timeout:1000}")
    private int timeout;

    public boolean isExclusive() {
        return exclusive;
    }

    public void setExclusive(boolean exclusive) {
        this.exclusive = exclusive;
    }

    public boolean isDurable() {
        return durable;
    }

    public void setDurable(boolean durable) {
        this.durable = durable;
    }

    public boolean isAutodelete() {
        return autodelete;
    }

    public void setAutodelete(boolean autodelete) {
        this.autodelete = autodelete;
    }

    public int getTimeout() {
        return timeout;
    }

    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }

    @PostConstruct
    private void init() throws IOException {
        log.info("Initialization of VnfmSpringHelperRabbit");
        rabbitAdmin = new RabbitAdmin(connectionFactory);
        rabbitAdmin.declareExchange(new TopicExchange("openbaton-exchange"));
        rabbitAdmin
                .declareQueue(new Queue(RabbitConfiguration.queueName_vnfmRegister, true, exclusive, autodelete));
        rabbitAdmin.declareBinding(
                new Binding(RabbitConfiguration.queueName_vnfmRegister, Binding.DestinationType.QUEUE,
                        "openbaton-exchange", RabbitConfiguration.queueName_vnfmRegister, null));
    }

    public void sendMessageToQueue(String sendToQueueName, final Serializable message) {
        log.debug("Sending message to Queue:  " + sendToQueueName);
        rabbitTemplate.convertAndSend(sendToQueueName, gson.toJson(message));
    }

    @Override
    public void sendToNfvo(final NFVMessage nfvMessage) {
        sendMessageToQueue(RabbitConfiguration.queueName_vnfmCoreActions, nfvMessage);
    }

    @Override
    public NFVMessage sendAndReceive(NFVMessage message) throws Exception {

        rabbitTemplate.setReplyTimeout(timeout * 1000);
        rabbitTemplate.afterPropertiesSet();
        String response = (String) this.rabbitTemplate
                .convertSendAndReceive(RabbitConfiguration.queueName_vnfmCoreActionsReply, gson.toJson(message));

        return gson.fromJson(response, NFVMessage.class);
    }

    @Override
    public String sendAndReceive(String message, String queueName) throws Exception {

        rabbitTemplate.setReplyTimeout(timeout * 1000);
        rabbitTemplate.afterPropertiesSet();

        log.debug("Sending to: " + queueName);
        String res = (String) rabbitTemplate.convertSendAndReceive("openbaton-exchange", queueName, message);
        log.trace("Received from EMS: " + res);
        if (res == null) {
            log.error("After " + timeout + " seconds the ems did not answer.");
            throw new TimeoutException("After " + timeout
                    + " seconds the ems did not answer. You can change this value by editing the application.properties propery \"vnfm.rabbitmq.sar.timeout\"");
        }
        return res;
    }
}