Feature/multidownloader

src/main/java/com/sheepit/client/Client.java

@@ -24,6 +24,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.io.StringWriter;
+import java.sql.Time;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Date;
@@ -36,6 +37,14 @@ import java.util.Timer;
 import java.util.TimerTask;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Callable;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
 import java.util.stream.Collectors;
 
 import com.sheepit.client.Error.ServerCode;
@@ -781,24 +790,51 @@ import okhttp3.HttpUrl;
 	}
 	
 	protected Error.Type downloadSceneFile(Job ajob_) throws SheepItException {
-		
 		int total = ajob_.getArchiveChunks().size();
+		
+		ExecutorService executor = Executors.newFixedThreadPool(total);
+		ArrayList<Callable<Error.Type>> tasks = new ArrayList<>();
+		
 		for (int i = 0; i < total; i++) {
 			Chunk chunk = ajob_.getArchiveChunks().get(i);
+			
+			int finalI = i;
+			Callable<Type> downloadTask = () -> {
 				DownloadManager downloadManager  = new DownloadManager(
 					this.server,
 					this.gui,
 					this.log,
-				String.format(LOCALE, "chunk %d/%d", i + 1, total),
+					String.format(LOCALE, "chunk %d/%d", finalI + 1, total),
 					this.directoryManager.getActualStoragePathFor(chunk),
 					chunk.getMd5(),
 					String.format(LOCALE, "%s?chunk=%s", this.server.getPage("download-chunk"), chunk.getId())
 				);
-			Error.Type ret = downloadManager.download();
+				Type ret = null;
-			if (ret != Type.OK) {
+				ret = downloadManager.download();
 				return ret;
+			};
+			
+			tasks.add(downloadTask);
+		}
+		
+		try {
+			var results = executor.invokeAll(tasks);
+			
+			for (var result : results) {
+				if (result.get(35, TimeUnit.MINUTES) != Type.OK) {
+					executor.shutdown();
+					return result.get(35, TimeUnit.MINUTES);
 				}
 			}
+		}
+		catch (ExecutionException | InterruptedException | TimeoutException e) {
+			
+			executor.shutdown();
+			return Type.DOWNLOAD_FILE;
+		}
+
+		
+		executor.shutdown();
 		return Type.OK;
 	}