org.trpr.platform.core.impl.event.EndpointEventProducerImpl.java Source code

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Here is the source code for org.trpr.platform.core.impl.event.EndpointEventProducerImpl.java

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/*
 * Copyright 2012-2015, the original author or authors.
 *
 * 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.trpr.platform.core.impl.event;

import org.trpr.platform.core.spi.event.EndpointEventProducer;
import org.trpr.platform.model.event.PlatformEvent;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * The <code>EndpointEventProducerImpl</code> is an implementation of the EndpointEventProducer interface.
 * Wraps the PlatformEvent into a PlatformApplicationEvent and publishes it to the Spring ApplicationContext.
 * 
 * @see org.springframework.context.ApplicationContext
 * 
 * @author Regunath B
 * @version 1.0, 16/05/2012
 */
public class EndpointEventProducerImpl implements EndpointEventProducer, ApplicationContextAware {

    /**
     * The Spring ApplicationContext instance set by the container for this
     * ApplicationContextAware implementation
     */
    private ApplicationContext appContext;

    /**EndpointURI configured for this event producer for sending MuleApplicationEvent(s)*/
    private String defaultEndpointURI;

    /**
     * Interface method implementation
     * @see org.trpr.platform.core.spi.event.PlatformEventProducer#publishEvent(PlatformEvent)
     */
    public void publishEvent(PlatformEvent event) {
        publishPlatformEvent(event, this.defaultEndpointURI);
    }

    /**
     * Interface method implementation
     * @see org.trpr.platform.core.spi.event.PlatformEventProducer#publishEvent(PlatformEvent, java.lang.String)
     */
    public void publishEvent(PlatformEvent event, String endpointURI) {
        publishPlatformEvent(event, endpointURI);
    }

    /**
     * Interface method implementation
     * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
     */
    public void setApplicationContext(ApplicationContext appContext) throws BeansException {
        this.appContext = appContext;
    }

    /**
     * Gets the defaultEndpointURI
     * @return Returns the defaultEndpointURI used by this event producer
     */
    public String getDefaultEndpointURI() {
        return defaultEndpointURI;
    }

    /**
     * Sets the defaultEndpointURI
     * @param defaultEndpointURI the endpoint URI to be used by this event producer for publishing events where the endpoint URI is not explicitly specified 
     */
    public void setDefaultEndpointURI(String defaultEndpointURI) {
        this.defaultEndpointURI = defaultEndpointURI;
    }

    /**
     * Helper method to publish a {@link PlatformEvent} to corresponding
     * implementation based on the specified endpoint. It publishes the event to the {@link ApplicationContext}
     */
    private void publishPlatformEvent(final PlatformEvent event, String endpointURI) {
        PlatformApplicationEvent platformEvent = new PlatformApplicationEvent(event);
        platformEvent.setEndpointURI(endpointURI);
        // publishes the PlatformEvent to the configured endpoint.
        appContext.publishEvent(platformEvent);
    }

}