RegistrationProducerMain.java

/*
 * Copyright 2010 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 com.joshlong.activiti.coordinator.registration1.distribution.producer;

import org.activiti.engine.ProcessEngine;
import org.apache.commons.lang.StringUtils;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Collections;
import java.util.Map;


/**
 * simple example demonstratong the deployment of the activiti components
 *
 * @author Josh Long
 * @since 1.0
 */
public class RegistrationProducerMain {
	/**
	 * continues generating new processes until it reaches a certain count
	 */
	static void doContinuousIterationUpUntil(ApplicationContext ctx, int counter) throws Throwable {
		ProcessEngine processEngine = ctx.getBean(ProcessEngine.class);
		for (int customerId = 0; customerId < counter; customerId++) {
			Map<String, Object> vars = Collections.singletonMap("customerId", (Object) customerId);
			processEngine.getRuntimeService().startProcessInstanceByKey("customer-fullfillment-process", vars);
		}
		while (true)
			Thread.sleep(10000);
	}

	/**
	 * generates new processes in response to a read-line
	 * @param ctx
	 * @throws Throwable
	 */
	static void doReadLine(ApplicationContext ctx) throws Throwable {
		ProcessEngine processEngine = ctx.getBean(ProcessEngine.class);

		String line;
		BufferedReader reader = new BufferedReader(
				new InputStreamReader(System.in));

		while (true) {
			System.out.println("which customer would you like to start a fulfillment " +
					"process for? Enter it, then hit <Enter>:");
			line = reader.readLine();
			Integer customerId = Integer.parseInt(StringUtils.defaultString(line).trim());
			Map<String, Object> vars = Collections.singletonMap("customerId", (Object) customerId);
			processEngine.getRuntimeService().startProcessInstanceByKey("customer-fullfillment-process", vars);
		}
	}

	/**
	 * doesn't generate new processes. Simply starts up the producer machinery
	 * to propagate state when incoming replies come in
	 * @throws Throwable
	 */
	public static void doDefault() throws Throwable {
		while (true) Thread.sleep(1000 * 10);
	}

	public static void main(String[] args) throws Throwable {

		ApplicationContext cax = new ClassPathXmlApplicationContext("producer.xml");

		//	doDefault();
		doContinuousIterationUpUntil(cax, 50);
	}
}