org.appops.cache.impl.ServiceBusImpl Maven / Gradle / Ivy

Go to download
/*
 * AppOps is a Java framework to develop, deploy microservices with ease and is available for free
 * and common use developed by AinoSoft ( www.ainosoft.com )
 *
 * AppOps and AinoSoft are registered trademarks of Aino Softwares private limited, India.
 *
 * Copyright (C) <2016> 
 *
 * This program is free software: you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version along with applicable additional terms as
 * provisioned by GPL 3.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License and applicable additional terms
 * along with this program.
 *
 * If not, see  and 
 */

package org.appops.cache.impl;

import com.google.inject.Inject;
import java.util.Set;
import org.appops.cache.event.Condition;
import org.appops.cache.event.EventSubscriber;
import org.appops.cache.event.ServiceEvent;
import org.appops.cache.event.SubscriberRegistry;
import org.appops.core.annotation.SubscriberListener;
import org.appops.core.mime.MimeType;
import org.appops.core.service.OpParameterMap;
import org.appops.marshaller.DescriptorType;
import org.appops.marshaller.Marshaller;
import org.appops.web.common.client.WebClient;

/**
 * A centralized event bus to manage and process all events in appops framework.
 *
 * @author deba
 * @version $Id: $Id
 */
public class ServiceBusImpl implements org.appops.cache.slim.ServiceBus {

  private SubscriberRegistry subscriberRegistry;
  private Marshaller marshaller;
  private WebClient webClient;

  /**
   * Constructor for ServiceBusImpl.
   */
  public ServiceBusImpl() {

  }

  @Inject
  /**
   * Constructor for ServiceBusImpl.
   *
   * @param subscriberRegistry a {@link org.appops.cache.event.SubscriberRegistry} object.
   */
  public ServiceBusImpl(SubscriberRegistry subscriberRegistry) {
    this.subscriberRegistry = subscriberRegistry;
  }

  /**
   * {@inheritDoc}
   *
   * Registers all listener methods i.e. methods annotated with {@link SubscriberListener} listener
   * instance passed.
   */
  @Override
  public Boolean register(EventSubscriber eventSubscriber) {
    return subscriberRegistry.register(eventSubscriber);
  }


  /**
   * {@inheritDoc}
   *
   * Passes event to all registered listeners to process.
   */
  @Override
  public void fireEvent(ServiceEvent event) {
    fireEvent(event, null);
  }


  /**
   * {@inheritDoc}
   *
   * Passes event to all registered listeners.
   */
  @Override
  public void fireEvent(ServiceEvent event, Condition condition) {
    String eventType = event.getEventType();
    Set subscribers = subscriberRegistry.getSubscribers(eventType, condition);
    String eventResultJson = marshaller.marshall(event, DescriptorType.JSON);
    for (String subscriberUrl : subscribers) {
      String urlParameters = populateOpParamMapJson(eventResultJson);
      this.webClient.post(subscriberUrl, urlParameters, MimeType.JSON);

    }
  }

  /**
   * Populate {@link OpParameterMap } from job token and encrypt {@link OpParameterMap }.
   * 
   * @param token job token which to be process.
   * @return encrypted job token .
   */
  private String populateOpParamMapJson(String json) {
    OpParameterMap map = new OpParameterMap();
    map.addParameter(0, "eventResult", json);
    return getMarshaller().marshall(map, DescriptorType.JSON);
  }


  /**
   * Getter for the field marshaller.
   *
   * @return a {@link org.appops.marshaller.Marshaller} object.
   */
  public Marshaller getMarshaller() {
    return marshaller;
  }

  /**
   * Setter for the field marshaller.
   *
   * @param marshaller a {@link org.appops.marshaller.Marshaller} object.
   */
  @Inject
  public void setMarshaller(Marshaller marshaller) {
    this.marshaller = marshaller;
  }

  /**
   * Getter for the field webClient.
   *
   * @return a {@link org.appops.web.common.client.WebClient} object.
   */
  public WebClient getWebClient() {
    return webClient;
  }

  /**
   * Setter for the field webClient.
   *
   * @param webClient a {@link org.appops.web.common.client.WebClient} object.
   */
  @Inject
  public void setWebClient(WebClient webClient) {
    this.webClient = webClient;
  }



}