Added downloader runnable.

libLauncher/src/main/java/ru/gravit/utils/downloader/Downloader.java

@@ -0,0 +1,69 @@
+package ru.gravit.utils.downloader;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
+
+import ru.gravit.utils.helper.LogHelper;
+
+public class Downloader implements Runnable {
+    public static final int BUFER_SIZE = 8192;
+    public static final int INTERVAL = 300;
+    public AtomicInteger writed = new AtomicInteger(0);
+    private final File file;
+    private final URL url;
+    public final AtomicBoolean interrupt = new AtomicBoolean(false);
+	private final int skip;
+	public AtomicReference<IOException> ex = new AtomicReference<>(null);
+	
+	public Downloader(URL url, File file) {
+		this.file = file;
+        this.url = url;
+        this.skip = 0;
+    }
+
+	public Downloader(URL url, File file, int skip) {
+		this.file = file;
+        this.url = url;
+        this.skip = skip;
+    }
+	
+    public File getFile() {
+        return file;
+    }
+
+    public void downloadFile() throws IOException {
+        try (BufferedInputStream in = new BufferedInputStream(url.openStream()); FileOutputStream fout = new FileOutputStream(file, skip != 0)) {
+            final byte data[] = new byte[BUFER_SIZE];
+            int count;
+            long timestamp = System.currentTimeMillis();
+            int writed_local = 0;
+            in.skip(skip);
+            while ((count = in.read(data, 0, BUFER_SIZE)) != -1) {
+                fout.write(data, 0, count);
+                writed_local += count;
+                if (System.currentTimeMillis() - timestamp > INTERVAL) {
+                    writed.set(writed_local);
+                    LogHelper.debug("Downloaded %d", writed_local);
+                    if (interrupt.get()) break;
+                }
+            }
+            writed.set(writed_local);
+        }
+    }
+
+	@Override
+	public void run() {
+		try {
+			downloadFile();
+		} catch (IOException ex) {
+			this.ex.set(ex);
+			LogHelper.error(ex);
+		}		
+	}
+}