org.raspinloop.fmi.VMRunner.java Source code

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Here is the source code for org.raspinloop.fmi.VMRunner.java

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/*******************************************************************************
 * Copyright 2018 RaspInLoop
 * 
 * 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.raspinloop.fmi;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Collectors;

import org.apache.commons.lang3.StringUtils;
import org.raspinloop.fmi.launcher.Runner;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This class will start the java application to debug
 * @author Motte
 *
 */
public class VMRunner implements Runner {

    Logger logger = LoggerFactory.getLogger(VMRunner.class);

    private Set<String> classPath;
    private String vMArguments;
    private String programArguments;
    private String className;
    private String jSonConfigName;

    private Process process;

    public VMRunner(String jSonConfigName, String vMArguments, String[] classPath, String className,
            String programArguments) {
        super();
        this.jSonConfigName = jSonConfigName;
        this.vMArguments = StringUtils.isBlank(vMArguments) ? "" : vMArguments;
        ;
        this.classPath = new HashSet<>(Arrays.asList(classPath));
        this.className = className;
        this.programArguments = StringUtils.isBlank(programArguments) ? "" : programArguments;
    }

    @Override
    public void run() {
        String separator = System.getProperty("file.separator");
        String path = System.getProperty("java.home") + separator + "bin" + separator + "java";

        ProcessBuilder processBuilder;
        try {
            processBuilder = new ProcessBuilder(path,
                    VMRunnerUtils.getRunnerAgentArgument(".", jSonConfigName, false),
                    VMRunnerUtils.getWeaverAgentArgument(".", false), vMArguments, "-cp",
                    classPath.stream().collect(Collectors.joining(":")), className, programArguments);
        } catch (Exception e) {
            logger.error("Cannot configure process: " + e.getMessage());
            throw new VMRunnerUncheckedException(e);
        }

        if (System.getProperty("mock") == null || !System.getProperty("mock").equalsIgnoreCase("true")) {
            try {

                logger.debug(
                        "==> starting JVM " + processBuilder.command().stream().collect(Collectors.joining(" ")));
                process = processBuilder.inheritIO().start();
            } catch (Exception e) {
                logger.error("Cannot start process: " + e.getMessage());
                throw new VMRunnerUncheckedException(e);
            }
            CompletableFuture.supplyAsync(() -> {
                try {
                    return process.waitFor();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }).thenAccept(i -> logger.info("<== JVM Stopped code(" + i + ")"));

        } else {
            logger.info("PLEASE RUN " + processBuilder.command().stream().collect(Collectors.joining(" ")));
            while (true) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    logger.info("PLEASE STOP ");
                    return;
                }
            }
        }
    }

    @Override
    public void terminate() {
        process.destroy();
        logger.info("<== JVM Interrupted: ");
    }

}