com.hubspot.slimfast.DownloadJars Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of SlimFast Show documentation

The newest version!

package com.hubspot.slimfast;

import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.jar.Manifest;
import java.util.stream.Collectors;

public class DownloadJars {

  public static void main(String... args) throws Exception {
    Manifest manifest = Utils.readManifest();
    Configuration config = Utils.readConfiguration();
    List jars = Utils.parseClassPath(manifest, config);

    ExecutorService executor = Executors.newFixedThreadPool(config.getS3DownloadThreads());
    JarDownloader downloader = Utils.findImplementation(JarDownloader.class, new DefaultJarDownloader());

    List> futures = jars.stream()
        .map(jar -> executor.submit(() -> {
          downloader.download(config, jar);
          return null;
        }))
        .collect(Collectors.toList());

    executor.shutdown();
    if (!executor.awaitTermination(5, TimeUnit.MINUTES)) {
      System.out.println("Took more than 5 minutes to download JARs, quitting!");
      System.exit(1);
    }

    for (Future future : futures) {
      future.get();
    }
  }
}