org.springsource.restbucks.processing.OrderProcessor.java Source code

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Here is the source code for org.springsource.restbucks.processing.OrderProcessor.java

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/*
 * Copyright 2012 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.springsource.restbucks.processing;

import lombok.extern.slf4j.Slf4j;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationListener;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;
import org.springsource.restbucks.order.Order;
import org.springsource.restbucks.order.OrderRepository;
import org.springsource.restbucks.payment.OrderPaidEvent;

/**
 * Simple {@link ApplicationListener} implementation that listens to {@link OrderPaidEvent}s marking the according
 * {@link Order} as in process, sleeping for 10 seconds and marking the order as processed right after that.
 * 
 * @author Oliver Gierke
 */
@Slf4j
@Service
class OrderProcessor implements ApplicationListener<OrderPaidEvent> {

    private final OrderRepository repository;

    /**
     * Creates a new {@link OrderProcessor} using the given {@link OrderRepository}.
     * 
     * @param repository must not be {@literal null}.
     */
    @Autowired
    public OrderProcessor(OrderRepository repository) {

        Assert.notNull(repository, "OrderRepository must not be null!");
        this.repository = repository;
    }

    /* 
     * (non-Javadoc)
     * @see org.springframework.context.ApplicationListener#onApplicationEvent(org.springframework.context.ApplicationEvent)
     */
    @Async
    @Override
    public void onApplicationEvent(OrderPaidEvent event) {

        Order order = repository.findOne(event.getOrderId());
        order.markInPreparation();
        order = repository.save(order);

        log.info("Starting to process order {}.", order);

        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }

        order.markPrepared();
        repository.save(order);

        log.info("Finished processing order {}.", order);
    }
}