Thread-safe client
This commit is contained in:
Andrea Cavalli
parent
a8800af2b6
commit
d477aeffe3
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@ -1,21 +1,27 @@
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package it.tdlight.tdlight;
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import it.tdlight.tdlib.NativeClient;
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import it.tdlight.tdlib.TdApi;
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import it.tdlight.tdlib.TdApi.AuthorizationStateClosed;
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import it.tdlight.tdlib.TdApi.AuthorizationStateClosing;
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import it.tdlight.tdlib.TdApi.AuthorizationStateWaitTdlibParameters;
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import it.tdlight.tdlib.TdApi.GetOption;
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import it.tdlight.tdlib.TdApi.Object;
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import it.tdlight.tdlib.TdApi.SetOption;
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import it.tdlight.tdlib.TdApi.UpdateAuthorizationState;
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import java.time.Duration;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.concurrent.locks.ReentrantLock;
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import java.util.concurrent.locks.StampedLock;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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/**
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* Interface for interaction with TDLib.
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*/
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public class Client extends NativeClient implements TelegramClient {
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private long clientId;
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private final ReentrantLock receiveResponsesLock = new ReentrantLock();
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private final ReentrantLock receiveUpdatesLock = new ReentrantLock();
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private final StampedLock executionLock = new StampedLock();
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private volatile Long stampedLockValue;
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private ClientState state = ClientState.of(false, 0, false, false, false);
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private final ReentrantReadWriteLock stateLock = new ReentrantReadWriteLock();
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/**
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* Creates a new TDLib client.
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@ -27,96 +33,152 @@ public class Client extends NativeClient implements TelegramClient {
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throwable.printStackTrace();
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System.exit(1);
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}
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this.clientId = createNativeClient();
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this.initializeClient();
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}
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@Override
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public void send(Request request) {
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if (this.executionLock.isWriteLocked()) {
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throw new IllegalStateException("ClientActor is destroyed");
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long clientId;
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stateLock.readLock().lock();
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try {
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requireInitialized();
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requireReadyToSend(request.getFunction().getConstructor());
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clientId = state.getClientId();
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} finally {
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stateLock.readLock().unlock();
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}
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nativeClientSend(this.clientId, request.getId(), request.getFunction());
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nativeClientSend(clientId, request.getId(), request.getFunction());
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}
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private final long[][] eventIds = new long[8][];
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private final Object[][] events = new Object[8][];
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@Override
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public List<Response> receive(double timeout, int eventsSize, boolean receiveResponses, boolean receiveUpdates) {
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return Arrays.asList(this.receive(timeout, eventsSize, receiveResponses, receiveUpdates, false));
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long clientId;
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stateLock.readLock().lock();
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try {
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if (!state.isInitialized()) {
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sleep(timeout);
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return Collections.emptyList();
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}
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requireInitialized();
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if (!state.isReadyToReceive()) {
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sleep(timeout);
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return Collections.emptyList();
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}
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requireReadyToReceive();
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clientId = state.getClientId();
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} finally {
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stateLock.readLock().unlock();
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}
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return Arrays.asList(this.internalReceive(clientId, timeout, eventsSize, receiveResponses, receiveUpdates));
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}
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private Response[] receive(double timeout, int eventsSize, boolean receiveResponses, boolean receiveUpdates, boolean singleResponse) {
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if (this.executionLock.isWriteLocked()) {
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throw new IllegalStateException("ClientActor is destroyed");
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}
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int group = (singleResponse ? 0b100 : 0b000) | (receiveResponses ? 0b010 : 0b000) | (receiveUpdates ? 0b001 : 0b000);
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if (eventIds[group] == null) {
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eventIds[group] = new long[eventsSize];
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} else {
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Arrays.fill(eventIds[group], 0);
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}
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if (events[group] == null) {
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events[group] = new Object[eventsSize];
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} else {
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Arrays.fill(events[group], null);
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}
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if (eventIds[group].length != eventsSize || events[group].length != eventsSize) {
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throw new IllegalArgumentException("EventSize can't change over time!"
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+ " Previous: " + eventIds[group].length + " Current: " + eventsSize);
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}
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if (receiveResponses && this.receiveResponsesLock.isLocked()) {
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throw new IllegalThreadStateException("Thread: " + Thread.currentThread().getName() + " trying receive incoming responses but shouldn't be called simultaneously from two different threads!");
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}
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if (receiveUpdates && this.receiveUpdatesLock.isLocked()) {
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throw new IllegalThreadStateException("Thread: " + Thread.currentThread().getName() + " trying receive incoming updates but shouldn't be called simultaneously from two different threads!");
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}
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int resultSize;
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if (receiveResponses) this.receiveResponsesLock.lock();
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private void sleep(double timeout) {
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long nanos = (long) (timeout * 1000000000d);
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int nanosPart = (int) (nanos % 1000000L);
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long millis = Duration.ofNanos(nanos - nanosPart).toMillis();
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try {
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if (receiveUpdates) this.receiveUpdatesLock.lock();
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try {
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resultSize = nativeClientReceive(this.clientId, eventIds[group], events[group], timeout, receiveResponses, receiveUpdates);
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} finally {
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if (receiveUpdates) this.receiveUpdatesLock.unlock();
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}
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} finally {
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if (receiveResponses) this.receiveResponsesLock.unlock();
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Thread.sleep(millis, nanosPart);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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Response[] responses = new Response[resultSize];
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for (int i = 0; i < resultSize; i++) {
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responses[i] = new Response(eventIds[group][i], events[group][i]);
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}
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return responses;
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}
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@Override
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public Response receive(double timeout, boolean receiveResponses, boolean receiveUpdates) {
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if (this.executionLock.isWriteLocked()) {
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throw new IllegalStateException("ClientActor is destroyed");
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long clientId;
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stateLock.readLock().lock();
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try {
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if (!state.isInitialized()) {
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sleep(timeout);
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return null;
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}
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requireInitialized();
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if (!state.isReadyToReceive()) {
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sleep(timeout);
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return null;
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}
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requireReadyToReceive();
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clientId = state.getClientId();
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} finally {
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stateLock.readLock().unlock();
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}
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Response[] responses = receive(timeout, 1, receiveResponses, receiveUpdates, true);
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Response[] responses = this.internalReceive(clientId, timeout, 1, receiveResponses, receiveUpdates);
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if (responses.length != 0) {
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if (responses.length > 0) {
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return responses[0];
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}
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return null;
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}
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private Response[] internalReceive(long clientId, double timeout, int eventsSize, boolean receiveResponses, boolean receiveUpdates) {
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long[] eventIds = new long[eventsSize];
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TdApi.Object[] events = new TdApi.Object[eventsSize];
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int resultSize = nativeClientReceive(clientId, eventIds, events, timeout, receiveResponses, receiveUpdates);
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Response[] responses = new Response[resultSize];
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for (int i = 0; i < resultSize; i++) {
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responses[i] = new Response(eventIds[i], events[i]);
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if (eventIds[i] == 0) {
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handleStateEvent(events[i]);
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}
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}
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return responses;
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}
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private void handleStateEvent(Object event) {
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if (event == null) {
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return;
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}
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if (event.getConstructor() != UpdateAuthorizationState.CONSTRUCTOR) {
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return;
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}
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UpdateAuthorizationState updateAuthorizationState = (UpdateAuthorizationState) event;
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switch (updateAuthorizationState.authorizationState.getConstructor()) {
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case AuthorizationStateWaitTdlibParameters.CONSTRUCTOR:
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stateLock.writeLock().lock();
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try {
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state.setReadyToSend(true);
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} finally {
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stateLock.writeLock().unlock();
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}
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break;
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case AuthorizationStateClosing.CONSTRUCTOR:
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stateLock.writeLock().lock();
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try {
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state.setReadyToSend(false);
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} finally {
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stateLock.writeLock().unlock();
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}
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break;
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case AuthorizationStateClosed.CONSTRUCTOR:
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stateLock.writeLock().lock();
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try {
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state.setReadyToSend(false).setReadyToReceive(false);
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} finally {
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stateLock.writeLock().unlock();
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}
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break;
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}
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}
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@Override
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public Response execute(Request request) {
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if (this.executionLock.isWriteLocked()) {
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throw new IllegalStateException("ClientActor is destroyed");
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stateLock.readLock().lock();
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try {
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requireInitialized();
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requireReadyToSend(request.getFunction().getConstructor());
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} finally {
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stateLock.readLock().unlock();
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}
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Object object = nativeClientExecute(request.getFunction());
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@ -125,14 +187,54 @@ public class Client extends NativeClient implements TelegramClient {
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@Override
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public void destroyClient() {
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stampedLockValue = this.executionLock.tryWriteLock();
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destroyNativeClient(this.clientId);
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stateLock.writeLock().lock();
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try {
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if (state.isInitialized() && state.hasClientId()) {
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if (state.isReadyToSend() || state.isReadyToReceive()) {
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throw new IllegalStateException("You need to close the Client before destroying it!");
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}
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destroyNativeClient(this.state.getClientId());
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state = ClientState.of(false, 0, false, false, false);
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}
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} finally {
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stateLock.writeLock().unlock();
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}
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}
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@Override
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public void initializeClient() {
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this.executionLock.tryUnlockWrite();
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stampedLockValue = null;
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this.clientId = createNativeClient();
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stateLock.writeLock().lock();
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try {
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if (!state.isInitialized() && !state.hasClientId()) {
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long clientId = createNativeClient();
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state = ClientState.of(true, clientId, true, true, false);
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}
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} finally {
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stateLock.writeLock().unlock();
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}
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}
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private void requireInitialized() {
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if (!state.isInitialized() || !state.hasClientId()) {
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throw new IllegalStateException("Client not initialized");
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}
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}
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private void requireReadyToSend(int constructor) {
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if (!state.isReadyToSend()) {
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switch (constructor) {
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case SetOption.CONSTRUCTOR:
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case GetOption.CONSTRUCTOR:
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case TdApi.SetTdlibParameters.CONSTRUCTOR:
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return;
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}
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throw new IllegalStateException("Client not ready to send");
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}
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}
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private void requireReadyToReceive() {
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if (!state.isReadyToReceive()) {
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throw new IllegalStateException("Client not ready to receive");
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}
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}
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}
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@ -0,0 +1,116 @@
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package it.tdlight.tdlight;
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import java.util.StringJoiner;
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public class ClientState {
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private boolean hasClientId;
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private long clientId;
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private boolean initialized;
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private boolean readyToReceive;
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private boolean readyToSend;
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private ClientState(boolean hasClientId, long clientId, boolean initialized, boolean readyToReceive, boolean readyToSend) {
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this.hasClientId = hasClientId;
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this.clientId = clientId;
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this.initialized = initialized;
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this.readyToReceive = readyToReceive;
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this.readyToSend = readyToSend;
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}
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public static ClientState of(boolean hasClientId, long clientId, boolean initialized, boolean readyToReceive, boolean readyToSend) {
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return new ClientState(hasClientId, clientId, initialized, readyToReceive, readyToSend);
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}
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public boolean hasClientId() {
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return hasClientId;
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}
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public long getClientId() {
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return clientId;
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}
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public boolean isInitialized() {
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return initialized;
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}
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public boolean isReadyToReceive() {
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return readyToReceive;
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}
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public boolean isReadyToSend() {
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return readyToSend;
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}
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public ClientState setHasClientId(boolean hasClientId) {
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this.hasClientId = hasClientId;
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return this;
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}
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public ClientState setClientId(long clientId) {
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this.clientId = clientId;
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return this;
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}
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public ClientState setInitialized(boolean initialized) {
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this.initialized = initialized;
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return this;
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}
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public ClientState setReadyToReceive(boolean readyToReceive) {
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this.readyToReceive = readyToReceive;
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return this;
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}
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public ClientState setReadyToSend(boolean readyToSend) {
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this.readyToSend = readyToSend;
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return this;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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ClientState that = (ClientState) o;
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if (hasClientId != that.hasClientId) {
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return false;
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}
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if (clientId != that.clientId) {
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return false;
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}
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if (initialized != that.initialized) {
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return false;
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}
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if (readyToReceive != that.readyToReceive) {
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return false;
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}
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return readyToSend == that.readyToSend;
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}
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@Override
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public int hashCode() {
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int result = (hasClientId ? 1 : 0);
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result = 31 * result + (int) (clientId ^ (clientId >>> 32));
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result = 31 * result + (initialized ? 1 : 0);
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result = 31 * result + (readyToReceive ? 1 : 0);
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result = 31 * result + (readyToSend ? 1 : 0);
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return result;
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}
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@Override
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public String toString() {
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return new StringJoiner(", ", ClientState.class.getSimpleName() + "[", "]")
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.add("hasClientId=" + hasClientId)
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.add("clientId=" + clientId)
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.add("initialized=" + initialized)
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.add("readyToReceive=" + readyToReceive)
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.add("readyToSend=" + readyToSend)
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.toString();
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}
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}
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