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Java library to create Telegram Clients
package org.telegram.bot.kernel;
import org.jetbrains.annotations.NotNull;
import org.telegram.api.engine.RpcException;
import org.telegram.api.functions.updates.TLRequestUpdatesGetState;
import org.telegram.api.updates.TLAbsUpdates;
import org.telegram.api.updates.TLUpdateShort;
import org.telegram.api.updates.TLUpdateShortChatMessage;
import org.telegram.api.updates.TLUpdateShortMessage;
import org.telegram.api.updates.TLUpdateShortSentMessage;
import org.telegram.api.updates.TLUpdates;
import org.telegram.api.updates.TLUpdatesCombined;
import org.telegram.api.updates.TLUpdatesState;
import org.telegram.api.updates.TLUpdatesTooLong;
import org.telegram.bot.handlers.UpdatesHandlerBase;
import org.telegram.bot.handlers.interfaces.IUpdatesHandler;
import org.telegram.bot.services.BotLogger;
import org.telegram.bot.services.NotificationsService;
import java.util.List;
import java.util.PriorityQueue;
import java.util.concurrent.ConcurrentLinkedDeque;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* @author Hendrik Hofstadt
* @author Ruben Bermudez
* @version 2.0
* @brief Bot kernel
* @date 13.001.14
*/
@SuppressWarnings({"OverlyComplexClass", "OverlyLongMethod", "OverlyComplexMethod", "InfiniteLoopStatement", "MethodOnlyUsedFromInnerClass"})
public class MainHandler implements NotificationsService.NotificationObserver {
private static final String LOGTAG = "KERNELHANDLER";
private final IKernelComm kernelComm;
private boolean running;
private final AtomicBoolean gettingDifferences = new AtomicBoolean(false);
private final AtomicBoolean needGetUpdateState = new AtomicBoolean(true);
private final ConcurrentLinkedDeque updatesQueue = new ConcurrentLinkedDeque<>();
private final IUpdatesHandler updatesHandler;
private final UpdateHandlerThread updateHandlerThread;
MainHandler(IKernelComm kernelComm, UpdatesHandlerBase updatesHandler) {
NotificationsService.getInstance().addObserver(this, NotificationsService.needGetUpdates);
this.kernelComm = kernelComm;
this.updatesHandler = updatesHandler;
this.running = false;
new UpdatesHandlerThread().start();
updateHandlerThread = new UpdateHandlerThread();
updateHandlerThread.start();
kernelComm.setMainHandler(this);
}
public void start() {
this.updatesQueue.clear();
this.running = true;
}
void stop() {
this.running = false;
}
public boolean isRunning() {
return this.running;
}
/**
* Add a TLAbsUpdates to the updates queue.
* Load Updates states from database if needed
* @param updates Updates to add
*/
void onUpdate(@NotNull final TLAbsUpdates updates) {
if (this.running) {
this.updatesQueue.addLast(updates);
synchronized (this.updatesQueue) {
this.updatesQueue.notifyAll();
}
}
}
/**
* Handles TLAbsUpdates
* @param updates Updates to handle
*/
private void onTLAbsUpdates(@NotNull final TLAbsUpdates updates) {
BotLogger.debug(LOGTAG, "Received:" + updates.toString());
if (updates instanceof TLUpdateShortMessage) {
final TLUpdateShortMessage updateShortMessage = (TLUpdateShortMessage) updates;
final UpdateWrapper wrapper = new UpdateWrapper(updateShortMessage);
wrapper.setParams(updateShortMessage.getPts(), updateShortMessage.getPtsCount(),
updateShortMessage.getDate(), 0, 0);
updateHandlerThread.addUpdate(wrapper);
} else if (updates instanceof TLUpdateShortChatMessage) {
final TLUpdateShortChatMessage updateShortChatMessage = (TLUpdateShortChatMessage) updates;
final UpdateWrapper wrapper = new UpdateWrapper(updateShortChatMessage);
wrapper.setParams(updateShortChatMessage.getPts(), updateShortChatMessage.getPtsCount(),
updateShortChatMessage.getDate(), 0, 0);
updateHandlerThread.addUpdate(wrapper);
} else if (updates instanceof TLUpdateShort) {
final TLUpdateShort updateShort = (TLUpdateShort) updates;
final UpdateWrapper wrapper = new UpdateWrapper(updateShort.getUpdate());
wrapper.setParams(updateShort.getUpdate().getPts(), updateShort.getUpdate().getPtsCount(),
updateShort.getDate(), 0, 0);
updateHandlerThread.addUpdate(wrapper);
} else if (updates instanceof TLUpdates) {
final TLUpdates tlUpdates = (TLUpdates) updates;
final boolean disablePtsCheck = tlUpdates.getSeq() != 0;
boolean correctSeq = true;
if (disablePtsCheck) {
correctSeq = updatesHandler.checkSeq(tlUpdates.getSeq(), 0,tlUpdates.getDate());
}
if (correctSeq) {
updatesHandler.onChats(tlUpdates.getChats());
updatesHandler.onUsers(tlUpdates.getUsers());
tlUpdates.getUpdates().forEach(x -> {
final UpdateWrapper wrapper = new UpdateWrapper(x);
wrapper.setParams(x.getPts(), x.getPtsCount(), tlUpdates.getDate(), tlUpdates.getSeq(), 0);
if (disablePtsCheck) {
wrapper.disablePtsCheck();
}
updateHandlerThread.addUpdate(wrapper);
});
} else {
updatesHandler.getDifferences();
}
} else if (updates instanceof TLUpdatesCombined) {
final TLUpdatesCombined updatesCombined = (TLUpdatesCombined) updates;
final boolean disablePtsCheck = updatesCombined.getSeq() != 0;
boolean correctSeq = true;
if (disablePtsCheck) {
correctSeq = updatesHandler.checkSeq(updatesCombined.getSeq(), updatesCombined.getSeqStart(), updatesCombined.getDate());
}
if (correctSeq) {
updatesHandler.onChats(updatesCombined.getChats());
updatesHandler.onUsers(updatesCombined.getUsers());
updatesCombined.getUpdates().forEach(x -> {
final UpdateWrapper wrapper = new UpdateWrapper(x);
wrapper.setParams(x.getPts(), x.getPtsCount(), updatesCombined.getDate(), updatesCombined.getSeq(), updatesCombined.getSeqStart());
if (disablePtsCheck) {
wrapper.disablePtsCheck();
}
updateHandlerThread.addUpdate(wrapper);
});
} else {
updatesHandler.getDifferences();
}
} else if (updates instanceof TLUpdateShortSentMessage) {
final TLUpdateShortSentMessage updateShortSentMessage = (TLUpdateShortSentMessage) updates;
final UpdateWrapper wrapper = new UpdateWrapper(updateShortSentMessage);
wrapper.setParams(updateShortSentMessage.getPts(), updateShortSentMessage.getPtsCount(),
updateShortSentMessage.getDate(), 0, 0);
updateHandlerThread.addUpdate(wrapper);
} else if (updates instanceof TLUpdatesTooLong) {
updatesHandler.onTLUpdatesTooLong();
} else {
BotLogger.debug(LOGTAG, "Unsupported TLAbsUpdates: " + updates.toString());
}
}
public void processUpdates(@NotNull List updates) {
updateHandlerThread.addUpdates(updates);
}
/**
* Load updats state from server
*/
private void getUpdatesState() {
try {
final TLUpdatesState state = kernelComm.doRpcCallSync(new TLRequestUpdatesGetState());
if (state != null) {
BotLogger.error(LOGTAG, "Received updates state");
updatesHandler.updateStateModification(state);
needGetUpdateState.set(false);
} else {
BotLogger.error(LOGTAG, "Error getting updates state");
}
} catch (ExecutionException | RpcException e) {
BotLogger.error(LOGTAG, e);
}
}
/**
* Force getting updates state on next update received
*/
public void needGetUpdates() {
this.needGetUpdateState.set(true);
synchronized (this.updatesQueue) {
this.updatesQueue.notifyAll();
}
}
public IUpdatesHandler getUpdatesHandler() {
return updatesHandler;
}
@Override
public void onNotificationReceived(int notificationId, Object... args) {
if (notificationId == NotificationsService.needGetUpdates) {
needGetUpdates();
}
}
@Override
protected void finalize() throws Throwable {
NotificationsService.getInstance().removeObserver(this, NotificationsService.needGetUpdates);
super.finalize();
}
/**
* Updates handler thread
*/
private class UpdatesHandlerThread extends Thread {
boolean isAlive = true;
private UpdatesHandlerThread() {
super();
}
@Override
public void interrupt() {
this.isAlive = false;
super.interrupt();
}
@Override
public void run() {
TLAbsUpdates updates;
while(isAlive) {
try {
if (needGetUpdateState.get() && !gettingDifferences.get()) {
getUpdatesState();
}
updates = MainHandler.this.updatesQueue.pollFirst();
if (updates == null) {
synchronized (MainHandler.this.updatesQueue) {
try {
MainHandler.this.updatesQueue.wait();
} catch (InterruptedException e) {
BotLogger.error(LOGTAG, e);
}
}
} else {
onTLAbsUpdates(updates);
}
} catch (Exception e) {
BotLogger.error(LOGTAG, e);
}
}
}
}
private class UpdateHandlerThread extends Thread {
private boolean isAlive = true;
private final PriorityQueue updates = new PriorityQueue<>(new UpdateWrapper.UpdateWrapperComparator());
private UpdateHandlerThread() {
super();
}
void addUpdate(UpdateWrapper newUpdate) {
synchronized (updates) {
updates.offer(newUpdate);
updates.notifyAll();
}
}
void addUpdates(List newUpdates) {
synchronized (updates) {
updates.addAll(newUpdates);
updates.notifyAll();
}
}
@Override
public void interrupt() {
this.isAlive = false;
super.interrupt();
}
@Override
public void run() {
while (isAlive) {
UpdateWrapper update;
while(isAlive) {
try {
synchronized (updates) {
update = updates.poll();
}
if (update == null) {
synchronized (updates) {
try {
updates.wait();
} catch (InterruptedException e) {
BotLogger.error(LOGTAG, e);
}
}
} else {
updatesHandler.processUpdate(update);
}
} catch (Exception e) {
BotLogger.error(LOGTAG, e);
}
}
}
}
}
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