Implement download worker

src/java/DownloadWorker.java

@@ -22,22 +22,45 @@ public class DownloadWorker implements Runnable {
     @Override
     public void run() {
         // TODO: Record the chunk start time in chunkStatus.
+        chunkStatus.setStartTimeMs(System.currentTimeMilliS()) ;
         double downloaded = 0.0;
 
         // TODO: Print a message that this chunk has started downloading.
+        System.out.println(Thread.currentThread().getName() + " started downloading Chunk #" + chunkStatus.getChunkId());
 
         while (downloaded < chunkStatus.getChunkSizeMB()) {
             // TODO: Generate a random sleep delay between min and max delay.
+            int minDelay = config.getMinStepDelayMs() ;
+            int maxDelay = config.getMaxStepDalayMs() ;
+            int delay = minDelay + random.nextInt(maxDelay-minDelay +1) ;
+
             // TODO: Sleep for that delay.
+            Thread.sleep(delay) ;
             // TODO: Generate a random download amount for this step.
+            double minStep = config.getMinStepDownloadMB() ;
+            double maxStep = config.getMaxStepDownloadMB() ;
+            double stepDownload = minStep +  ((maxStep-minStep)*random.nextDouble()) ;
+
+
             // TODO: Increase downloaded, but do not go beyond chunk size.
+            downloaded += stepDownload ;
+            if (downloaded > chunkStatus.getChunkSizeMB())
+            {
+                downloaded  = chunkStatus.getChunkSizeMB() ;
+            }
+
             // TODO: Save the updated downloaded value into chunkStatus.
+                chunkStatus.setDownloadedMB(downloaded) ;
             // TODO: Optionally print step-by-step progress.
         }
 
+
         // TODO: Mark the chunk as completed.
+        chunkStatus.setCompleted(true );
         // TODO: Record the chunk end time in chunkStatus.
+        chunkStatus.setEndTimeMs(System.currentTimeMillis()) ;
         // TODO: Print a message that this chunk has finished downloading.
+        System.out.println(Thread.currentThread().getName() + " finished downloading Chunk #" + chunkStatus.getChunkId());
     }
 
 }

src/java/ProgressMonitor.java

@@ -27,6 +27,7 @@ public class ProgressMonitor implements Runnable {
         // 6. Otherwise sleep for monitorDelayMs and continue
 
 
+
         while (true) {
             double totalDownloadedMB = 0.0;
             int completedChunks = 0;