More refactoring and cleanup.

Updated strings in confirmation dialog.
Moved image writer to new package

Core/src/org/sleuthkit/autopsy/casemodule/AddImageTask.java

@@ -26,7 +26,7 @@ import org.sleuthkit.autopsy.corecomponentinterfaces.DataSourceProcessorCallback
 import org.sleuthkit.autopsy.corecomponentinterfaces.DataSourceProcessorCallback.DataSourceProcessorResult;
 import org.sleuthkit.autopsy.corecomponentinterfaces.DataSourceProcessorProgressMonitor;
 import org.sleuthkit.autopsy.coreutils.Logger;
-import org.sleuthkit.autopsy.datasourceprocessors.ImageWriterService;
+import org.sleuthkit.autopsy.imagewriter.ImageWriterService;
 import org.sleuthkit.autopsy.ingest.IngestManager;
 import org.sleuthkit.datamodel.Content;
 import org.sleuthkit.datamodel.Image;

Core/src/org/sleuthkit/autopsy/datasourceprocessors/Bundle.properties

@@ -10,4 +10,7 @@ RawDSInputPanel.jBreakFileUpLabel.text=Break image up into:
 RawDSInputPanel.jNoBreakupRadioButton.text=Do not break up
 RawDSInputPanel.j2GBBreakupRadioButton.text=2GB chunks
 RawDSInputPanel.timeZoneLabel.text=Please select the input timezone:
-ImageWriterService.serviceName=Image Writer
+ImageWriterService.serviceName=Image Writer
+ImageWriterService.waitingForVHDs=Waiting for VHD(s) to complete
+ImageWriterService.shouldWait=Wait for VHD(s) in progress to complete?
+ImageWriterService.localDisk=Local disk image copy

Core/src/org/sleuthkit/autopsy/imagewriter/ImageWriter.java

@@ -16,13 +16,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.sleuthkit.autopsy.datasourceprocessors;
+package org.sleuthkit.autopsy.imagewriter;
 
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
-import java.util.HashSet;
-import java.util.Set;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 import java.util.concurrent.ScheduledFuture;
@@ -65,10 +63,6 @@ class ImageWriter implements PropertyChangeListener{
     private ScheduledThreadPoolExecutor periodicTasksExecutor = null;
     private final boolean doUI;
     
-    private static final ImageWriterService service = new ImageWriterService(); 
-    
-
-    
     /**
      * Create the Image Writer object.
      * After creation, startListeners() should be called.
@@ -133,8 +127,6 @@ class ImageWriter implements PropertyChangeListener{
             // the same image if more ingest modules are run later
             if(isStarted){
                 return;
-            } else {
-                isStarted = true;
             }
             
             Image image;
@@ -143,8 +135,6 @@ class ImageWriter implements PropertyChangeListener{
                 imageHandle = image.getImageHandle();
             } catch (TskCoreException ex){
                 logger.log(Level.SEVERE, "Error loading image", ex);
-                
-                // Stay subscribed to the events for now. Case close will clean everything up.
                 imageHandle = null;
                 return;
             }
@@ -170,6 +160,9 @@ class ImageWriter implements PropertyChangeListener{
                     logger.log(Level.SEVERE, "Error finishing VHD image", ex); //NON-NLS
                 }
             });
+            
+            // Setting this means that finishTask and all the UI updaters are initialized (if running UI)
+            isStarted = true;
         }
 
         // Wait for finishImageWriter to complete
@@ -181,7 +174,6 @@ class ImageWriter implements PropertyChangeListener{
         }
         
         synchronized(currentTasksLock){
-            unsubscribeFromEvents();
             if(doUI){
                 // Some of these may be called twice if the user closes the case
                 progressUpdateTask.cancel(true);
@@ -196,13 +188,14 @@ class ImageWriter implements PropertyChangeListener{
     /**
      * If a task hasn't been started yet, set the cancel flag so it can no longer
      * start.
+     * This is intended to be used in case close so a job doesn't suddenly start
+     * up during cleanup.
      */
     void cancelIfNotStarted(){
         synchronized(currentTasksLock){
-            if(finishTask == null){
+            if(! isStarted){
                 isCancelled = true;
             }
-            unsubscribeFromEvents();
         }
     }
     
@@ -212,7 +205,9 @@ class ImageWriter implements PropertyChangeListener{
      *         never started
      */
     boolean jobIsInProgress(){
-        return((finishTask != null) && (! finishTask.isDone()));
+        synchronized(currentTasksLock){
+            return((isStarted) && (! finishTask.isDone()));
+        }
     }
     
     /**
@@ -223,9 +218,8 @@ class ImageWriter implements PropertyChangeListener{
         synchronized(currentTasksLock){
             // All of the following is redundant but safe to call on a complete job
             isCancelled = true;
-            unsubscribeFromEvents();
 
-            if(imageHandle != null){
+            if(isStarted){
                 SleuthkitJNI.cancelFinishImage(imageHandle);
                     
                 // Stop the progress bar update task.
@@ -234,8 +228,10 @@ class ImageWriter implements PropertyChangeListener{
                 // when that happens.
                 // Since we've stopped the update task, we'll stop the associated progress
                 // bar now, too.
-                progressUpdateTask.cancel(true);
-                progressHandle.finish();
+                if(doUI){
+                    progressUpdateTask.cancel(true);
+                    progressHandle.finish();
+                }
             }            
         }
     }
@@ -245,15 +241,19 @@ class ImageWriter implements PropertyChangeListener{
      * Also makes sure the progressUpdateTask is canceled.
      */
     void waitForJobToFinish(){
-        // Wait for the finish task to end
-        if(finishTask != null){
-            try{
-                finishTask.get();
-            } catch (InterruptedException | ExecutionException ex){
-                Logger.getLogger(ImageWriter.class.getName()).log(Level.SEVERE, "Error finishing VHD image", ex); //NON-NLS
-            }
-            progressUpdateTask.cancel(true);
-        }       
+        synchronized(currentTasksLock){
+            // Wait for the finish task to end
+            if(isStarted){
+                try{
+                    finishTask.get();
+                } catch (InterruptedException | ExecutionException ex){
+                    Logger.getLogger(ImageWriter.class.getName()).log(Level.SEVERE, "Error finishing VHD image", ex); //NON-NLS
+                }
+                if(doUI){
+                    progressUpdateTask.cancel(true);
+                }
+            }   
+        }
     }
     
     /**

Core/src/org/sleuthkit/autopsy/imagewriter/ImageWriterService.java

@@ -16,7 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.sleuthkit.autopsy.datasourceprocessors;
+package org.sleuthkit.autopsy.imagewriter;
 
 import java.util.HashSet;
 import java.util.Set;
@@ -30,6 +30,13 @@ import org.sleuthkit.autopsy.framework.AutopsyService;
 
 @ServiceProviders(value = {@ServiceProvider(service = AutopsyService.class)})
 
+/**
+ * Creates and handles closing of ImageWriter objects.
+ * Currently, ImageWriter is only enabled for local disks, and local disks can
+ * not be processed in multi user mode. If ImageWriter is ever enabled for multi user
+ * cases this code will need to be revised.
+ */
+
 public class ImageWriterService implements AutopsyService {
 
     private static final Set<ImageWriter> imageWriters = new HashSet<>();  // Contains all Image Writer objects
@@ -58,8 +65,8 @@ public class ImageWriterService implements AutopsyService {
     
     @Override
     public void closeCaseResources(CaseContext context) throws AutopsyServiceException {
-        context.getProgressIndicator().progress("Waiting for VHD(s) to complete");
-
+        context.getProgressIndicator().progress(NbBundle.getMessage(this.getClass(), "ImageWriterService.waitingForVHDs"));
+        
         synchronized(imageWritersLock){
             // If any of our ImageWriter objects haven't started the finish task, set the cancel flag
             // to make sure they don't start now. The reason they haven't started is that
@@ -82,8 +89,8 @@ public class ImageWriterService implements AutopsyService {
             if(jobsAreInProgress){
                 // If jobs are in progress, ask the user if they want to wait for them to complete
                 NotifyDescriptor descriptor = new NotifyDescriptor.Confirmation(
-                    "Wait for Image Writer to finish?",
-                    "Title",
+                    NbBundle.getMessage(this.getClass(), "ImageWriterService.shouldWait"),
+                    NbBundle.getMessage(this.getClass(), "ImageWriterService.localDisk"),
                     NotifyDescriptor.YES_NO_OPTION,
                     NotifyDescriptor.WARNING_MESSAGE);
                 descriptor.setValue(NotifyDescriptor.NO_OPTION);
@@ -103,6 +110,14 @@ public class ImageWriterService implements AutopsyService {
                 }
                 
             }
+            
+            // Stop listening for events
+            for(ImageWriter writer: imageWriters){
+                writer.unsubscribeFromEvents();
+            }
+            
+            // Clear out the list of Image Writers
+            imageWriters.clear();
         }
     }
 }