Topic exists - have checked via Confluent Cloud admin console
admin is setup during code initialisation
static boolean checkForTopic(String topicName) throws InterruptedException {
boolean bRetVal = false;
ListTopicsResult lTR = admin.listTopics();
KafkaFuture<Set<String>> topicNames = lTR.names();
try {
Set<String> s = topicNames.get();
if(s.isEmpty()) {
System.out.println("Empty Topic list");
}else {
Iterator<String> iT = s.iterator();
while(iT.hasNext()) {
String tN = iT.next();
System.out.println(tN);
if(tN.equalsIgnoreCase(topicName)) {
bRetVal = true;
break;
}
}
}
} catch (ExecutionException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return bRetVal;
}
Any help greatly appreciated
Related
I have two DataSource Beans one with #Primary annotation.
Individual Hikari pools are created for every DataSource.
I am trying to change the HikariDataSource from Pool 1(if connection is not available) to Pool 2 .
#Primary
#Bean(destroyMethod = "close", name = "dataSource")
public CustomHikariDataSource dataSource() throws SQLException {
try {
primaryDataSource = mainDataSource();
} catch (Exception e) {
primaryDataSource = secondaryDataSource();
}
HikariConfig config = new HikariConfig();
config.setDataSource(primaryDataSource);
config.setPoolName("POOL_PRIMARY");
config.setAllowPoolSuspension(true);
config.setIdleTimeout(10000);
config.setMaxLifetime(30000);
return new CustomHikariDataSource(config);
}
#Bean(destroyMethod = "close", name = "failoverDataSource")
public CustomHikariDataSource failoverDataSource() throws SQLException {
secondaryDataSource = secondaryDataSource();
HikariConfig config = new HikariConfig();
config.setDataSource(secondaryDataSource);
config.setPoolName("POOL_SECONDARY");
config.setAllowPoolSuspension(true);
return new CustomHikariDataSource(config);
}
private DataSource mainDataSource() {
return dataSourceProperties().initializeDataSourceBuilder().build();
}
private DataSource secondaryDataSource() {
return failoverDataSourceProperties().initializeDataSourceBuilder().build();
}
Where is the actual Problem?
Finally i am able to achieve it by Overriding getConnection() method from HikariDataSource.class
#Override
public Connection getConnection() throws SQLException {
if (isClosed()) {
throw new SQLException("HikariDataSource " + this + " has been closed.");
}
if (fastPathPool != null && (fastPathPool.poolState == 0 || fastPathPool.poolState == 1)) {
try {
fastPathPool.resumePool();
con = fastPathPool.getConnection();
} catch (Exception e) {
}
if (con.isClosed()) {
config = pool.config;
fastPathPool.suspendPool();
} else
return con;
}
config.setDataSource(dataSource);
config.setAllowPoolSuspension(true);
config.setMinimumIdle(minIdle);
pool = new HikariPool(config);
HikariPool result = pool;
if (result == null) {
synchronized (this) {
result = pool;
if (result == null) {
validate();
System.out.println("{} - Starting..." + getPoolName());
try {
pool = result = new HikariPool(this);
this.seal();
} catch (PoolInitializationException pie) {
if (pie.getCause() instanceof SQLException) {
throw (SQLException) pie.getCause();
} else {
throw pie;
}
}
System.out.println("{} - Start completed." + getPoolName());
}
}
}
return result.getConnection();
}
For complete class ,feel free to ping me.
Happy Coding ! :)
This is a service running in the background, no Activity, began operating normally, but After about four hours, there will be a ConnectTimeoutException.
Connect to xxx.xxx.xxx.xxx time out.
This problem occurs in Android 6, I did not find this issue Android 4. When this problem occurs, I have to restart this phone, after which it connects properly for some time. When this problem occurs, other network applications on the phone runs properly.
public class mService extends Service{
Intent intent;
private Handler objHandlerCheckNetwork = new Handler();
private boolean mReflectFlg = false;
private static final int NOTIFICATION_ID = 101;
private static final Class<?>[] mSetForegroundSignature = new Class[] { boolean.class };
private static final Class<?>[] mStartForegroundSignature = new Class[] { int.class , Notification.class };
private static final Class<?>[] mStopForegroundSignature = new Class[] { boolean.class };
private NotificationManager mNM;
private Method mSetForeground;
private Method mStartForeground;
private Method mStopForeground;
private Object[] mSetForegroundArgs = new Object[1];
private Object[] mStartForegroundArgs = new Object[2];
private Object[] mStopForegroundArgs = new Object[1];
private Runnable mHttpTestRunnable = new Runnable() {
#Override
public void run() {
if (httpTest()){
Log.e(GlobalData.getClassMethodName(),"true");
}else{
Log.e(GlobalData.getClassMethodName(),"false");
}
}
};
private Runnable mTasksCheckNetwork = new Runnable()
{
public void run()
{
Thread httpTestThread = new Thread(mHttpTestRunnable);;
httpTestThread.start();
objHandlerCheckNetwork.postDelayed(mTasksCheckNetwork, 1000*30);
}
};
#SuppressLint("NewApi")
#Override
public void onCreate() {
super.onCreate();
mNM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE );
try {
mStartForeground = mService.class.getMethod("startForeground" , mStartForegroundSignature);
mStopForeground = mService.class.getMethod("stopForeground" , mStopForegroundSignature);
} catch (NoSuchMethodException e) {
mStartForeground = mStopForeground = null;
}
try {
mSetForeground = getClass().getMethod( "setForeground", mSetForegroundSignature);
} catch (NoSuchMethodException e) {
throw new IllegalStateException( "OS doesn't have Service.startForeground OR Service.setForeground!");
}
Intent intent = new Intent(this,UploadTableDataService.class );
intent.putExtra( "ficationId", NOTIFICATION_ID);
Notification.Builder builder = new Notification.Builder(this);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, 0);
builder.setContentIntent(contentIntent);
builder.setSmallIcon(R.drawable.gps);
builder.setContentTitle( "test" );
builder.setContentText( "test111" );
Notification notification = builder.getNotification();
startForegroundCompat( NOTIFICATION_ID, notification);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
//startService( new Intent( this, WifiService. class));
//startService( new Intent( this, VoiceService. class));
this.intent = intent;
Log.e(GlobalData.getClassMethodName(),"mService start!");
objHandlerCheckNetwork.postDelayed(mTasksCheckNetwork, 1000);
return START_STICKY;
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onDestroy() {
super.onDestroy();
try{
objHandlerCheckNetwork.removeCallbacks(mTasksCheckNetwork);
}catch (Exception e) {
Log.d("DEBUG->", "onDestroy error - removeUpdates: ");
}
//stopForegroundCompat( NOTIFICATION_ID);
}
void invokeMethod(Method method, Object[] args) {
try {
method.invoke( this, args);
} catch (InvocationTargetException e) {
// Should not happen.
Log. w("ApiDemos" , "Unable to invoke method" , e);
} catch (IllegalAccessException e) {
// Should not happen.
Log. w("ApiDemos" , "Unable to invoke method" , e);
}
}
/**
* This is a wrapper around the new startForeground method, using the older
* APIs if it is not available.
*/
void startForegroundCompat( int id, Notification notification) {
if ( mReflectFlg) {
// If we have the new startForeground API, then use it.
if ( mStartForeground != null) {
mStartForegroundArgs[0] = Integer. valueOf(id);
mStartForegroundArgs[1] = notification;
invokeMethod( mStartForeground, mStartForegroundArgs);
return;
}
// Fall back on the old API.
mSetForegroundArgs[0] = Boolean. TRUE;
invokeMethod( mSetForeground, mSetForegroundArgs);
mNM.notify(id, notification);
} else {
if (Build.VERSION. SDK_INT >= 5) {
startForeground(id, notification);
} else {
// Fall back on the old API.
mSetForegroundArgs[0] = Boolean. TRUE;
invokeMethod( mSetForeground, mSetForegroundArgs);
mNM.notify(id, notification);
}
}
}
/**
* This is a wrapper around the new stopForeground method, using the older
* APIs if it is not available.
*/
void stopForegroundCompat( int id) {
if ( mReflectFlg) {
// If we have the new stopForeground API, then use it.
if ( mStopForeground != null) {
mStopForegroundArgs[0] = Boolean. TRUE;
invokeMethod( mStopForeground, mStopForegroundArgs);
return;
}
mNM.cancel(id);
mSetForegroundArgs[0] = Boolean. FALSE;
invokeMethod( mSetForeground, mSetForegroundArgs);
} else {
if (Build.VERSION. SDK_INT >= 5) {
stopForeground( true);
} else {
// Fall back on the old API. Note to cancel BEFORE changing the
// foreground state, since we could be killed at that point.
mNM.cancel(id);
mSetForegroundArgs[0] = Boolean. FALSE;
invokeMethod( mSetForeground, mSetForegroundArgs);
}
}
}
public static Boolean httpTest() {
HttpClient client= new DefaultHttpClient();;
try {
StringBuilder sb = new StringBuilder();
HttpParams httpParams = client.getParams();
HttpConnectionParams.setConnectionTimeout(httpParams, 1000*5);
HttpConnectionParams.setSoTimeout(httpParams, 1000*10);
HttpResponse response = client.execute(new HttpGet("http://www.itnanny.com/default.htm"));
HttpEntity entity = response.getEntity();
if (entity != null) {
BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8"), 8192);
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
reader.close();
}
Log.e(GlobalData.getClassMethodName(),"result："+sb.toString());
if (sb.toString().indexOf("ok") > -1){
return true;
}
} catch (Exception e) {
e.printStackTrace();
}finally {
client.getConnectionManager().shutdown();;
}
return false;
}
}
I am creating javafx application where I have this case that I need to listen for data sent over Bluetooth.
I have one fxml window on which I need to initialize Bluetooth and start listening from data.
Following is my Code for fxml controller:
//all imports
public class NewBarcodeInvoicePaneController implements Initializable{
private BluetoothController bc;
public BluetoothController getBc() {
return bc;
}
#Override
public void initialize(URL location, ResourceBundle resources) {
try {
bc = new BluetoothController();
new Thread(bc).start();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
And BluetoothController is task where I initialize bluettoth and listen to the data
public class BluetoothController extends Task<Void> {
#Override
protected Void call() throws Exception {
LocalDevice local = null;
StreamConnectionNotifier notifier;
StreamConnection connection = null;
// setup the server to listen for connection
try {
local = LocalDevice.getLocalDevice();
try {
local.setDiscoverable(DiscoveryAgent.GIAC);
} catch (BluetoothStateException e) {
}
UUID uuid = new UUID(80087355); // "04c6093b-0000-1000-8000-00805f9b34fb"
String url = "btspp://localhost:" + uuid.toString() + ";name=RemoteBluetooth";
notifier = (StreamConnectionNotifier) Connector.open(url);
} catch (Exception e) {
e.printStackTrace();
return null;
}
try {
System.err.println("THIS IS HAPENING");
connection = notifier.acceptAndOpen();
System.err.println("HAPENING???????????????????????????");
InputStream inputStream = connection.openInputStream();
BufferedReader bReader = new BufferedReader(new InputStreamReader(inputStream));
String lineRead = bReader.readLine();
connection.close();
inputStream.close();
notifier.close();
local.setDiscoverable(DiscoveryAgent.NOT_DISCOVERABLE);
JSONParser parser = new JSONParser();
Object obj = parser.parse(lineRead);
JSONArray array = (JSONArray) obj;
array.stream().map((o) -> (String) o).forEach((stringObj) -> {
System.out.println(stringObj);
});
System.out.println("AFTER DATA RECIEVED");
} catch (Exception e) {
e.printStackTrace();
return null;
}
return null;
}
}
It Works fine if I send data over bluetooth and blocking call to notifier.acceptAndOpen() is unblocked.
My problem is when we do not pass any data and I just want to close the window I opened..
It still have blocking call open with extra thread by the task.
I tried to cancel BluetoothController task in Main controller where I open this window like following
private void openNewBarcodeInvoicePane(ActionEvent ae) {
//following are custom classes to open windows from fxml and getting controller back for further manipulation
PostoryModalWindow modalWindow = new PostoryModalWindow();
modalWindow.openNewModalPaneWithParent("New Invoice", "fxml/newbarcodeinvoicepane.fxml", ae);
//getting controller object
NewBarcodeInvoicePaneController controller = (NewBarcodeInvoicePaneController) modalWindow.getDswFromController();
controller.getWindowStage().showAndWait();
BluetoothController bc = controller.getBc();
if(bc != null){
System.err.println("CANCELLING");
bc.cancel(true);
}
}
But it doesn't throw InterrupttedExeption (In which I might have Choice to close Bluetooth thread) and after research I found that waiting on Socket doesn't work on interrupt.
Any help on this?
Thanks
Got Solution After Some Research.
I just added new task to call notifier.acceptAndOpen();
And added method to close Bluetooth notifier.
public class BluetoothController extends Task<Void> {
private final ObservableList<Item> items = FXCollections.observableArrayList();
public ObservableList<Item> getItems() {
return items;
}
StreamConnectionNotifier notifier;
#Override
protected Void call() throws Exception {
try {
BluetoothConnectionTask bct = new BluetoothConnectionTask(items);
new Thread(bct).start();
Thread.sleep(2000);
notifier = bct.getNotifier();
} catch (Exception e) {
e.printStackTrace();
return null;
}
return null;
}
public void cancelandExit() {
try {
if (notifier != null) {
notifier.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
Here is new task for blocking call
public class BluetoothConnectionTask extends Task<Void>{
private StreamConnectionNotifier notifier;
private StreamConnection connection;
private ObservableList<Item> items = FXCollections.observableArrayList();
public StreamConnection getConnection() {
return connection;
}
public StreamConnectionNotifier getNotifier() {
return notifier;
}
public BluetoothConnectionTask(ObservableList<Item> is){
items = is;
}
#Override
protected Void call() throws Exception {
try {
LocalDevice local = LocalDevice.getLocalDevice();
try {
local.setDiscoverable(DiscoveryAgent.GIAC);
} catch (BluetoothStateException e) {
}
UUID uuid = new UUID(80087355); // "04c6093b-0000-1000-8000-00805f9b34fb"
String url = "btspp://localhost:" + uuid.toString() + ";name=RemoteBluetooth";
notifier = (StreamConnectionNotifier) Connector.open(url);
} catch (Exception e) {
e.printStackTrace();
return null;
}
connection = notifier.acceptAndOpen();
InputStream inputStream = connection.openInputStream();
BufferedReader bReader = new BufferedReader(new InputStreamReader(inputStream));
String lineRead = bReader.readLine();
connection.close();
inputStream.close();
notifier.close();
LocalDevice local = LocalDevice.getLocalDevice();
local.setDiscoverable(DiscoveryAgent.NOT_DISCOVERABLE);
JSONParser parser = new JSONParser();
Object obj = parser.parse(lineRead);
JSONArray array = (JSONArray) obj;
ItemDAO idao = new ItemDAO();
array.stream().map((o) -> (String) o).forEach((stringObj) -> {
String barcode = (String) stringObj;
Item i = idao.getItemByBarCode(barcode);
System.err.println("Adding Item "+i.getName());
items.add(i);
});
System.out.println("AFTER DATA RECIEVED");
return null;
}
}
Now for cancelling closing my bluetooth thread I am calling cancelandExit() after window is closed.
I want to download csv file , i take the response content and write to it , apprently wicket write after me and the content iam getting is the page html where it should be my csv
I have seen in the example the usage of throw new AbortException();
I am using version 6.7 , do you know if my version wicket has somthing instead of it ?
or rather I am doing somthing wrong ....
can you please help me ...
add(new Link<Void>("export") {
#Override
public void onClick() {
WebResponse response = (WebResponse) getResponse();
response.setAttachmentHeader("export.csv");
response.setContentType("text/csv");
OutputStream out = getResponse().getOutputStream();
try {
c.exportData(dataSource.getListForExport(), columns, out);
} catch (Exception ex) {
System.err.println(ex);
}
}
});
public <T> void exportData(List<T> list, List<IGridColumn<IDataSource<T>, T, String>> columns, OutputStream outputStream)
throws IOException {
long startTime = System.nanoTime();
PrintWriter out = new PrintWriter(new OutputStreamWriter(outputStream, Charset.forName(characterSet)));
try {
if (isExportHeadersEnabled()) {
boolean first = true;
for (IGridColumn<IDataSource<T>, T, String> col : columns) {
if (first) {
first = false;
} else {
out.print(delimiter);
System.out.println(delimiter);
}
if (col.getId().equals("checkBox")) {
continue;
}
out.print(quoteValue(col.getId()));
System.out.println(col.getId());
}
out.print("\r\n");
System.out.println("\r\n");
}
Iterator<? extends T> rowIterator = list.iterator();
while (rowIterator.hasNext()) {
T row = rowIterator.next();
boolean first = true;
for (IGridColumn<IDataSource<T>, T, String> col : columns) {
if (first) {
first = false;
} else {
out.print(delimiter);
System.out.println(delimiter);
}
if (col.getId().equals("checkBox")) {
continue;
}
Object o = (new PropertyModel<>(row, col.getId())).getObject();// ((AbstractColumn<T,
if (o != null) {
Class<?> c = o.getClass();
String s;
IConverter converter = Application.get().getConverterLocator().getConverter(c);
if (converter == null) {
s = o.toString();
} else {
s = converter.convertToString(o, Session.get().getLocale());
}
out.print(quoteValue(s));
System.out.println(quoteValue(s));
}
}
out.print("\r\n");
System.out.println("\r\n");
}
} catch (Exception ex) {
System.out.println(ex);
} finally {
System.out.println(out);
out.close();
// measure
System.out.print(System.nanoTime() - startTime);
}
}
The best way to do this is using dynamic resources. I'll suggest you to read chapter "Resource managment with Wicket" of this magnific free Wicket guide: https://code.google.com/p/wicket-guide/.
Here you have a similar example given in this guide in the section "Custom resources".
public class RSSProducerResource extends AbstractResource {
#Override
protected ResourceResponse newResourceResponse(Attributes attributes) {
ResourceResponse resourceResponse = new ResourceResponse();
resourceResponse.setContentType("text/xml");
resourceResponse.setTextEncoding("utf-8");
resourceResponse.setWriteCallback(new WriteCallback()
{
#Override
public void writeData(Attributes attributes) throws IOException
{
OutputStream outputStream = attributes.getResponse().getOutputStream();
Writer writer = new OutputStreamWriter(outputStream);
SyndFeedOutput output = new SyndFeedOutput();
try {
output.output(getFeed(), writer);
} catch (FeedException e) {
throw new WicketRuntimeException("Problems writing feed to response...");
}
}
});
return resourceResponse;
}
// method getFeed()...
}
And then you need to add the link in the desired page or component:
add(new ResourceLink("rssLink", new RSSProducerResource()));
I want to attach multiple images with email in BB. How can I do this? Does any body have an idea? please help me.Below is my code which works fine when i send only one image with email. so what modification should I make in my code for attaching multiple images.
public static void SendMailAttachment(Bitmap screenshot)
{
String htmlContent = "String" ;
try
{
Multipart mp = new Multipart();
Message msg = new Message();
Address[] addresses = {new Address("","")};
for (int i = 0; i<2 ; i++)
{
PNGEncodedImage img = PNGEncodedImage.encode(screenshot);
SupportedAttachmentPart pt = new SupportedAttachmentPart(mp, img.getMIMEType(),
"Weed.png", img.getData());
mp.addBodyPart(pt);
}
msg.setContent(mp);
msg.setContent(htmlContent);
msg.addRecipients(RecipientType.TO, addresses);
msg.setSubject("Subject");
Invoke.invokeApplication(Invoke.APP_TYPE_MESSAGES, new MessageArguments(msg));
}
catch (AddressException ex)
{
System.out.println("Exception -->"+ex.getMessage());
}
catch (MessagingException ex)
{
System.out.println("Exception -->"+ex.getMessage());
}
}
Thanx in advance.
following code can be used to attach multiple images or files.
public void upload()
{
Multipart mp = new Multipart();
String fileName = null;
for (int i = 0; i<2 ; i++)
{
// Dialog.alert(image.);
byte[] stream = readStream("file:///SDCard/IMG00001-20110404-1119.JPEG");
SupportedAttachmentPart sap = new SupportedAttachmentPart(mp, MIMETypeAssociations.getMIMEType("IMG00001-20110404-1119.JPEG"),"IMG00001-20110404-1119.JPEG", stream);
mp.addBodyPart(sap);
}
TextBodyPart tbp = new TextBodyPart(mp,"test bodyString");
mp.addBodyPart(tbp);
Folder folders[] = Session.getDefaultInstance().getStore().list(Folder.SENT);
Message message = new Message(folders[0]);
Address[] toAdds = new Address[1];
try {
toAdds[0] = new Address("testmailid", null);
message.addRecipients(Message.RecipientType.TO,toAdds);
// message.setFrom(new InternetAddress(_from));
// message.addRecipients(Message.RecipientType.FROM,toAdds);
message.setContent(mp);
message.setSubject("test subject");
Transport.send(message);
Dialog.alert("message send successfully.");
} catch (AddressException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
Dialog.alert(e.getMessage());
} catch (MessagingException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
Dialog.alert(e.getMessage());
}
}
private byte[] readStream(String path)
{
InputStream in = null;
FileConnection fc = null;
byte[] bytes = null;
try
{
fc = (FileConnection) Connector.open(path);
if (fc !=null && fc.exists())
{
in = fc.openInputStream();
if (in !=null)
{
bytes = IOUtilities.streamToBytes(in);
}
}
}
catch(IOException e)
{
}
finally
{
try
{
if (in != null)
{
in.close();
}
}
catch(IOException e)
{
}
try
{
if (fc !=null)
{
fc.close();
}
}
catch(IOException e)
{
}
}
return bytes;
}
i have used this code. it works fine.
Just create a new SupportedAttachmentPart for each image and add them to the message with the addBodyPart method.
Once the multipart is populated with the body part and the attachment parts, call msg.setContent(mp).