workspace-uploader/src/main/java/org/gcube/portlets/widgets/workspaceuploader/client/uploader/UploaderMonitor.java

270 lines
8.6 KiB
Java

/**
*
*/
package org.gcube.portlets.widgets.workspaceuploader.client.uploader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.gcube.portlets.widgets.workspaceuploader.client.ClosableDialog;
import org.gcube.portlets.widgets.workspaceuploader.client.ConstantsWorkspaceUploader;
import org.gcube.portlets.widgets.workspaceuploader.client.WorkspaceUploadNotification.WorskpaceUploadNotificationListener;
import org.gcube.portlets.widgets.workspaceuploader.client.WorkspaceUploaderServiceAsync;
import org.gcube.portlets.widgets.workspaceuploader.client.events.CancelUploadEvent;
import org.gcube.portlets.widgets.workspaceuploader.client.events.CancelUploadEventHandler;
import org.gcube.portlets.widgets.workspaceuploader.client.resource.WorkspaceUploaderResources;
import org.gcube.portlets.widgets.workspaceuploader.shared.HandlerResultMessage;
import org.gcube.portlets.widgets.workspaceuploader.shared.WorkspaceUploaderItem;
import org.gcube.portlets.widgets.workspaceuploader.shared.WorkspaceUploaderItem.UPLOAD_STATUS;
import com.google.gwt.core.shared.GWT;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
/**
* The Class UploaderMonitor.
*
* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
* Sep 7, 2015
*/
public class UploaderMonitor {
private static UploaderMonitor instance;
private final static HandlerManager eventBus = new HandlerManager(null);
private MonitorPanel monitorPanel = new MonitorPanel(eventBus);
private static Map<String, Timer> mapTimer = new HashMap<String, Timer>();
private ClosableDialog dialogUploadMonitor = new ClosableDialog(monitorPanel, false, ConstantsWorkspaceUploader.MY_UPLOADS);
private static List<WorskpaceUploadNotificationListener> listenersUpload = new ArrayList<WorskpaceUploadNotificationListener>();
/**
* Gets the single instance of UploaderMonitor.
*
* @return single instance of UploaderMonitor
*/
public static synchronized UploaderMonitor getInstance() {
if (instance == null){
instance = new UploaderMonitor();
bindEvents();
}
return instance;
}
/**
* Bind events.
*/
private static void bindEvents() {
eventBus.addHandler(CancelUploadEvent.TYPE, new CancelUploadEventHandler() {
@Override
public void onCancelUpload(final CancelUploadEvent deleteTimerEvent) {
if(deleteTimerEvent.getUploader()==null)
return;
String clientKey = deleteTimerEvent.getUploader().getClientUploadKey();
Timer timer = mapTimer.get(clientKey);
GWT.log("Delete timer "+timer);
if(timer!=null && timer.isRunning()){
timer.cancel();
mapTimer.put(clientKey, null);
}
RequestBuilder request = new RequestBuilder(RequestBuilder.GET,
ConstantsWorkspaceUploader.WORKSPACE_UPLOADER_SERVLET_STREAM+"?"+ConstantsWorkspaceUploader.CLIENT_UPLOAD_KEYS+"="+clientKey+"&"+ConstantsWorkspaceUploader.CANCEL_UPLOAD+"=true");
try {
request.sendRequest(null, new RequestCallback() {
@SuppressWarnings("incomplete-switch")
@Override
public void onResponseReceived(Request request, Response response) {
String strippedResult = new HTML(response.getText()).getText();
final HandlerResultMessage resultMessage = HandlerResultMessage.parseResult(strippedResult);
switch (resultMessage.getStatus()) {
case ERROR: {
GWT.log("ERROR: Error during stop upload "+resultMessage.getMessage());
Window.alert("Sorry, An error occurred during upload abort!");
return;
}
case OK: {
HorizontalPanel hp = deleteTimerEvent.getHp();
if(hp!=null){
hp.clear();
HTML html = new HTML();
hp.add(html);
String text = "<div><img src='"+WorkspaceUploaderResources.getImageCancelRed().getUrl()+"'>";
text+="<span style='margin-left:5px; vertical-align: top;'>Upload "+deleteTimerEvent.getFileName()+ " aborted</span></div>";
html.setHTML(text);
deleteTimerEvent.getUploader().setUploadStatus(UPLOAD_STATUS.ABORTED);
notifyUploadAborted(deleteTimerEvent.getUploader().getFile().getParentId(), null);
}
break;
}
}
}
@Override
public void onError(Request request, Throwable exception) {
GWT.log("ERROR: Error during stop upload "+exception.getMessage());
}
});
} catch (RequestException e) {
GWT.log("RequestException: Error during stop upload "+e.getMessage());
}
}
});
}
/**
* Show monitor.
*/
public void showMonitor(){
if(!dialogUploadMonitor.isShowing())
dialogUploadMonitor.center();
}
/**
* Adds the new submit.
*
* @param uploader the uploader
* @param fileName the file name
*/
public void addNewSubmit(WorkspaceUploaderItem uploader, String fileName){
if(!dialogUploadMonitor.isShowing())
dialogUploadMonitor.center();
monitorPanel.newWorkspaceUploder(uploader, fileName);
}
/**
* Poll workspace uploader.
*
* @param workspaceUploader the workspace uploader item
*/
public void pollWorkspaceUploader(final WorkspaceUploaderItem workspaceUploader){
Timer timer = new Timer() {
@Override
public void run() {
WorkspaceUploaderServiceAsync.Util.getInstance().getUploadStatus(workspaceUploader.getClientUploadKey(), new AsyncCallback<WorkspaceUploaderItem>() {
@Override
public void onSuccess(WorkspaceUploaderItem result) {
// GWT.log("onSuccess: "+result.toString());
synchronized(this){
Timer tmn = mapTimer.get(workspaceUploader.getClientUploadKey());
if(tmn!=null && tmn.isRunning()){
if(result.getUploadStatus().equals(UPLOAD_STATUS.COMPLETED)){
mapTimer.remove(tmn);
notifyUploadCompleted(result.getFile().getParentId(), result.getFile().getItemId());
// new DialogResult(null, "Upload Completed!!", result.getStatusDescription()).center();
cancel();
}else if(result.getUploadStatus().equals(UPLOAD_STATUS.FAILED)){
mapTimer.remove(tmn);
notifyUploadError(result.getFile().getParentId(), null, null);
// new DialogResult(null, "Upload Failed!!", result.getStatusDescription()).center();
cancel();
}
monitorPanel.updateWorkspaceUploder(result);
// GWT.log(result.toString());
}else{
GWT.log("Timer is null or already closed or completed");
cancel();
}
}
}
@Override
public void onFailure(Throwable caught) {
GWT.log("onFailure: "+caught.getMessage());
notifyUploadError(workspaceUploader.getFile().getParentId(), null, caught);
cancel();
}
});
}
};
mapTimer.put(workspaceUploader.getClientUploadKey(), timer);
timer.scheduleRepeating(2000);
}
/**
* Notify upload completed.
*
* @param parentId the parent id
* @param itemId the item id
*/
private static void notifyUploadCompleted(String parentId, String itemId){
for (WorskpaceUploadNotificationListener listener : listenersUpload) {
listener.onUploadCompleted(parentId, itemId);
}
}
/**
* Notify upload aborted.
*
* @param parentId the parent id
* @param itemId the item id
*/
private static void notifyUploadAborted(String parentId, String itemId){
for (WorskpaceUploadNotificationListener listener : listenersUpload) {
listener.onUploadAborted(parentId, itemId);
}
}
/**
* Notify upload error.
*
* @param parentId the parent id
* @param itemId the item id
* @param t the t
*/
private static void notifyUploadError(String parentId, String itemId, Throwable t){
for (WorskpaceUploadNotificationListener listener : listenersUpload) {
listener.onError(parentId, itemId, t);
}
}
/**
* Adds the workspace upload listener.
*
* @param handler the handler
*/
public void addWorkspaceUploadListener(WorskpaceUploadNotificationListener handler) {
this.listenersUpload.add(handler);
}
/**
* Removes the workspace upload listener.
*
* @param handler the handler
*/
public void removeWorkspaceUploadListener(WorskpaceUploadNotificationListener handler) {
try {
this.listenersUpload.remove(handler);
} catch (Exception e) {
// SILENT
}
}
}