329 lines
12 KiB
Java
329 lines
12 KiB
Java
package org.telegram.telegrambots.updatesreceivers;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import org.apache.http.client.config.RequestConfig;
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import org.apache.http.client.methods.CloseableHttpResponse;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.ContentType;
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import org.apache.http.entity.StringEntity;
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import org.apache.http.impl.client.CloseableHttpClient;
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import org.apache.http.util.EntityUtils;
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import org.json.JSONException;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.telegram.telegrambots.bots.DefaultBotOptions;
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import org.telegram.telegrambots.facilities.TelegramHttpClientBuilder;
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import org.telegram.telegrambots.meta.api.methods.updates.GetUpdates;
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import org.telegram.telegrambots.meta.api.objects.Update;
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import org.telegram.telegrambots.meta.exceptions.TelegramApiRequestException;
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import org.telegram.telegrambots.meta.generics.*;
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import java.io.IOException;
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import java.io.InvalidObjectException;
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import java.lang.reflect.InvocationTargetException;
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import java.net.SocketException;
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import java.net.SocketTimeoutException;
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import java.nio.charset.StandardCharsets;
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import java.security.InvalidParameterException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Optional;
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import java.util.concurrent.ConcurrentLinkedDeque;
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import java.util.concurrent.atomic.AtomicBoolean;
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import static org.telegram.telegrambots.Constants.SOCKET_TIMEOUT;
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/**
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* @author Ruben Bermudez
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* @version 1.0
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* Thread to request updates with active wait
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*/
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public class DefaultBotSession implements BotSession {
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private static final Logger log = LoggerFactory.getLogger(DefaultBotSession.class);
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private AtomicBoolean running = new AtomicBoolean(false);
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private final ConcurrentLinkedDeque<Update> receivedUpdates = new ConcurrentLinkedDeque<>();
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private final ObjectMapper objectMapper = new ObjectMapper();
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private ReaderThread readerThread;
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private HandlerThread handlerThread;
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private LongPollingBot callback;
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private String token;
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private int lastReceivedUpdate = 0;
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private DefaultBotOptions options;
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private UpdatesSupplier updatesSupplier;
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public DefaultBotSession() {
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}
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@Override
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public void start() {
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if (!running.compareAndSet(false, true)) {
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throw new IllegalStateException("Session already running");
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}
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synchronized (this) {
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lastReceivedUpdate = 0;
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readerThread = new ReaderThread(updatesSupplier, this);
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readerThread.setName(callback.getBotUsername() + " Telegram Connection");
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readerThread.start();
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handlerThread = new HandlerThread();
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handlerThread.setName(callback.getBotUsername() + " Telegram Executor");
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handlerThread.start();
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}
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}
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@Override
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public void stop() {
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if (!running.compareAndSet(true, false)) {
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throw new IllegalStateException("Session already stopped");
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}
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synchronized (this) {
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if (readerThread != null) {
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readerThread.interrupt();
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}
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if (handlerThread != null) {
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handlerThread.interrupt();
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}
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if (callback != null) {
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callback.onClosing();
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}
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}
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}
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public void setUpdatesSupplier(UpdatesSupplier updatesSupplier) {
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this.updatesSupplier = updatesSupplier;
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}
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@Override
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public void setOptions(BotOptions options) {
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if (this.options != null) {
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throw new InvalidParameterException("BotOptions has already been set");
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}
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this.options = (DefaultBotOptions) options;
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}
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@Override
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public void setToken(String token) {
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if (this.token != null) {
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throw new InvalidParameterException("Token has already been set");
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}
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this.token = token;
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}
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@Override
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public void setCallback(LongPollingBot callback) {
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if (this.callback != null) {
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throw new InvalidParameterException("Callback has already been set");
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}
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this.callback = callback;
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}
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@Override
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public boolean isRunning() {
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return running.get();
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}
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@SuppressWarnings("WeakerAccess")
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private class ReaderThread extends Thread implements UpdatesReader {
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private final UpdatesSupplier updatesSupplier;
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private final Object lock;
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private CloseableHttpClient httpclient;
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private BackOff backOff;
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private RequestConfig requestConfig;
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public ReaderThread(UpdatesSupplier updatesSupplier, Object lock) {
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this.updatesSupplier = Optional.ofNullable(updatesSupplier).orElse(this::getUpdatesFromServer);
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this.lock = lock;
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}
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@Override
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public synchronized void start() {
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httpclient = TelegramHttpClientBuilder.build(options);
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requestConfig = options.getRequestConfig();
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backOff = options.getBackOff();
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// fall back to default exponential backoff strategy if no backoff specified
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if (backOff == null) {
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backOff = new ExponentialBackOff();
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}
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if (requestConfig == null) {
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requestConfig = RequestConfig.copy(RequestConfig.custom().build())
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.setSocketTimeout(SOCKET_TIMEOUT)
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.setConnectTimeout(SOCKET_TIMEOUT)
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.setConnectionRequestTimeout(SOCKET_TIMEOUT).build();
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}
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super.start();
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}
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@Override
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public void interrupt() {
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if (httpclient != null) {
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try {
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httpclient.close();
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} catch (IOException e) {
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log.warn(e.getLocalizedMessage(), e);
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}
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}
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super.interrupt();
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}
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@Override
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public void run() {
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setPriority(Thread.MIN_PRIORITY);
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while (running.get()) {
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synchronized (lock) {
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if (running.get()) {
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try {
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List<Update> updates = updatesSupplier.getUpdates();
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if (updates.isEmpty()) {
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lock.wait(500);
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} else {
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updates.removeIf(x -> x.getUpdateId() < lastReceivedUpdate);
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lastReceivedUpdate = updates.parallelStream()
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.map(
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Update::getUpdateId)
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.max(Integer::compareTo)
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.orElse(0);
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receivedUpdates.addAll(updates);
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synchronized (receivedUpdates) {
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receivedUpdates.notifyAll();
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}
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}
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} catch (InterruptedException e) {
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if (!running.get()) {
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receivedUpdates.clear();
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}
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log.debug(e.getLocalizedMessage(), e);
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interrupt();
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} catch (Exception global) {
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log.error(global.getLocalizedMessage(), global);
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try {
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synchronized (lock) {
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lock.wait(backOff.nextBackOffMillis());
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}
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} catch (InterruptedException e) {
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if (!running.get()) {
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receivedUpdates.clear();
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}
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log.debug(e.getLocalizedMessage(), e);
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interrupt();
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}
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}
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}
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}
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}
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log.debug("Reader thread has being closed");
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}
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private List<Update> getUpdatesFromServer() throws IOException {
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GetUpdates request = GetUpdates
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.builder()
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.limit(options.getGetUpdatesLimit())
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.timeout(options.getGetUpdatesTimeout())
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.offset(lastReceivedUpdate + 1)
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.build();
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if (options.getAllowedUpdates() != null) {
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request.setAllowedUpdates(options.getAllowedUpdates());
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}
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String url = options.getBaseUrl() + token + "/" + GetUpdates.PATH;
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//http client
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HttpPost httpPost = new HttpPost(url);
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httpPost.addHeader("charset", StandardCharsets.UTF_8.name());
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httpPost.setConfig(requestConfig);
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httpPost.setEntity(new StringEntity(objectMapper.writeValueAsString(request), ContentType.APPLICATION_JSON));
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try (CloseableHttpResponse response = httpclient.execute(httpPost, options.getHttpContext())) {
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String responseContent = EntityUtils.toString(response.getEntity(), StandardCharsets.UTF_8);
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if (response.getStatusLine().getStatusCode() >= 500) {
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log.warn(responseContent);
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synchronized (lock) {
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lock.wait(500);
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}
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} else {
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try {
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List<Update> updates = request.deserializeResponse(responseContent);
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backOff.reset();
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return updates;
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} catch (JSONException e) {
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log.error("Error deserializing update: " + responseContent, e);
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}
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}
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} catch (SocketException | InvalidObjectException | TelegramApiRequestException e) {
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log.error(e.getLocalizedMessage(), e);
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} catch (SocketTimeoutException e) {
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log.info(e.getLocalizedMessage(), e);
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} catch (InterruptedException e) {
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log.info(e.getLocalizedMessage(), e);
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interrupt();
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} catch (InternalError e) {
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// handle InternalError to workaround OpenJDK bug (resolved since 13.0)
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// https://bugs.openjdk.java.net/browse/JDK-8173620
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if (e.getCause() instanceof InvocationTargetException) {
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Throwable cause = e.getCause().getCause();
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log.error(cause.getLocalizedMessage(), cause);
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} else throw e;
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}
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return Collections.emptyList();
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}
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}
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public interface UpdatesSupplier {
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List<Update> getUpdates() throws Exception;
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}
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private List<Update> getUpdateList() {
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List<Update> updates = new ArrayList<>();
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for (Iterator<Update> it = receivedUpdates.iterator(); it.hasNext();) {
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updates.add(it.next());
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it.remove();
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}
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return updates;
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}
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private class HandlerThread extends Thread implements UpdatesHandler {
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@Override
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public void run() {
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setPriority(Thread.MIN_PRIORITY);
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while (running.get()) {
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try {
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List<Update> updates = getUpdateList();
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if (updates.isEmpty()) {
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synchronized (receivedUpdates) {
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receivedUpdates.wait();
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updates = getUpdateList();
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if (updates.isEmpty()) {
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continue;
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}
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}
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}
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callback.onUpdatesReceived(updates);
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} catch (InterruptedException e) {
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log.debug(e.getLocalizedMessage(), e);
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interrupt();
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} catch (Exception e) {
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log.error(e.getLocalizedMessage(), e);
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}
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}
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log.debug("Handler thread has being closed");
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}
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}
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}
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