com.github.ffremont.microservices.springboot.node.tasks.StartTask.java Source code

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Here is the source code for com.github.ffremont.microservices.springboot.node.tasks.StartTask.java

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package com.github.ffremont.microservices.springboot.node.tasks;

import com.github.ffremont.microservices.springboot.node.NodeHelper;
import com.github.ffremont.microservices.springboot.node.exceptions.FailStartedException;
import com.github.ffremont.microservices.springboot.node.exceptions.FileMsNotFoundException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
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.stereotype.Component;

/**
 *
 * @author florent
 */
@Component
public class StartTask implements IMicroServiceTask {

    private final static Logger LOG = LoggerFactory.getLogger(StartTask.class);

    @Value("${app.java.exec:}")
    private String javaExec;

    @Autowired
    private NodeHelper helper;

    /**
     * Syntaxe : java [-options] class [args...] (pour l'excution d'une classe)
     * ou java [-options] -jar jarfile [args...] (pour l'excution d'un fichier
     * JAR
     *
     * @param task
     * @throws
     * com.github.ffremont.microservices.springboot.node.exceptions.FailStartedException
     * @throws
     * com.github.ffremont.microservices.springboot.node.exceptions.FileMsNotFoundException
     */
    @Override
    public void run(MicroServiceTask task) throws FailStartedException, FileMsNotFoundException {
        LOG.info("Dmarrage du micro service {}", task.getMs().getName());

        Path jar = helper.targetJarOf(task.getMs());
        Path workingDir = helper.targetDirOf(task.getMs());

        if (!Files.exists(jar)
                || !Files.exists(Paths.get(workingDir.toString(), InstallTask.CHECKSUM_FILE_NAME + ".txt"))) {
            throw new FileMsNotFoundException("Jar inexistant ou invalide");
        }

        String javaEx = this.javaExec.isEmpty() ? System.getProperty("java.home") + "/bin/java" : this.javaExec;

        ProcessBuilder ps = new ProcessBuilder(javaEx, "-jar", helper.targetJarOf(task.getMs()).toString(), "&");
        ps.directory(workingDir.toFile());

        try {
            Path consoleLog = Paths.get(workingDir.toString(), "console.log");
            ps.redirectOutput(consoleLog.toFile());
            ps.redirectError(consoleLog.toFile());

            LOG.info("Run de {}", ps.command().toString());
            ps.start();
        } catch (IOException ex) {
            throw new FailStartedException("Impossible de dmarrer le programme java : " + task.getMs().getId(),
                    ex);
        }

        LOG.info("Micro service {} dmarr", task.getMs().getName());
    }

    public NodeHelper getHelper() {
        return helper;
    }

    public void setHelper(NodeHelper helper) {
        this.helper = helper;
    }

    public String getJavaExec() {
        return javaExec;
    }

    public void setJavaExec(String javaExec) {
        this.javaExec = javaExec;
    }
}