org.camunda.bpm.spring.boot.example.simple.SimpleApplication.java Source code

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Here is the source code for org.camunda.bpm.spring.boot.example.simple.SimpleApplication.java

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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; 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.camunda.bpm.spring.boot.example.simple;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.camunda.bpm.engine.HistoryService;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.history.HistoricProcessInstance;
import org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.camunda.bpm.engine.impl.jobexecutor.JobExecutor;
import org.camunda.bpm.spring.boot.starter.annotation.EnableProcessApplication;
import org.camunda.bpm.spring.boot.starter.event.PostDeployEvent;
import org.camunda.bpm.spring.boot.starter.event.PreUndeployEvent;
import org.camunda.bpm.spring.boot.starter.property.CamundaBpmProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.event.EventListener;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.util.Assert;

@SpringBootApplication
@EnableScheduling
@EnableProcessApplication("mySimpleApplication")
public class SimpleApplication implements CommandLineRunner {

    boolean processApplicationStopped;

    public static void main(final String... args) throws Exception {
        SpringApplication.run(SimpleApplication.class, args);
    }

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private JobExecutor jobExecutor;

    @Autowired
    private HistoryService historyService;

    @Autowired
    private ConfigurableApplicationContext context;

    @Autowired
    private CamundaBpmProperties camundaBpmProperties;

    @Autowired
    private Showcase showcase;

    @Autowired
    private ProcessEngine processEngine;

    @Value("${org.camunda.bpm.spring.boot.starter.example.simple.SimpleApplication.exitWhenFinished:true}")
    private boolean exitWhenFinished;

    @EventListener
    public void onPostDeploy(PostDeployEvent event) {
        logger.info("postDeploy: {}", event);
    }

    @EventListener
    public void onPreUndeploy(PreUndeployEvent event) {
        logger.info("preUndeploy: {}", event);
        processApplicationStopped = true;
    }

    @Scheduled(fixedDelay = 1500L)
    public void exitApplicationWhenProcessIsFinished() {
        Assert.isTrue(!((ProcessEngineConfigurationImpl) processEngine.getProcessEngineConfiguration())
                .isDbMetricsReporterActivate());

        String processInstanceId = showcase.getProcessInstanceId();

        if (processInstanceId == null) {
            logger.info("processInstance not yet started!");
            return;
        }

        if (isProcessInstanceFinished()) {
            logger.info("processinstance ended!");

            if (exitWhenFinished) {
                jobExecutor.shutdown();
                SpringApplication.exit(context, () -> 0);
            }
            return;
        }
        logger.info("processInstance not yet ended!");
    }

    public boolean isProcessInstanceFinished() {
        final HistoricProcessInstance historicProcessInstance = historyService.createHistoricProcessInstanceQuery()
                .processInstanceId(showcase.getProcessInstanceId()).singleResult();

        return historicProcessInstance != null && historicProcessInstance.getEndTime() != null;
    }

    @Override
    public void run(String... strings) throws Exception {
        logger.info("CommandLineRunner#run() - {}", ToStringBuilder
                .reflectionToString(camundaBpmProperties.getApplication(), ToStringStyle.SHORT_PREFIX_STYLE));
    }
}