tdlib-session-container/src/main/java/it/tdlight/tdlibsession/td/direct/AsyncTdDirectImpl.java

108 lines
3.8 KiB
Java

package it.tdlight.tdlibsession.td.direct;
import it.tdlight.common.TelegramClient;
import it.tdlight.jni.TdApi;
import it.tdlight.jni.TdApi.AuthorizationStateClosed;
import it.tdlight.jni.TdApi.Close;
import it.tdlight.jni.TdApi.Function;
import it.tdlight.jni.TdApi.Object;
import it.tdlight.jni.TdApi.Ok;
import it.tdlight.jni.TdApi.UpdateAuthorizationState;
import it.tdlight.tdlibsession.td.TdResult;
import it.tdlight.tdlight.ClientManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.core.publisher.Sinks;
import reactor.core.publisher.Sinks.One;
import reactor.core.scheduler.Scheduler;
import reactor.core.scheduler.Schedulers;
public class AsyncTdDirectImpl implements AsyncTdDirect {
private static final Logger logger = LoggerFactory.getLogger(AsyncTdDirect.class);
private final One<TelegramClient> td = Sinks.one();
private final Scheduler tdScheduler = Schedulers.newSingle("TdMain", false);
private final String botAlias;
public AsyncTdDirectImpl(String botAlias) {
this.botAlias = botAlias;
}
@Override
public <T extends TdApi.Object> Mono<TdResult<T>> execute(Function request, boolean synchronous) {
if (synchronous) {
return td.asMono().single().flatMap(td -> Mono.fromCallable(() -> {
if (td != null) {
return TdResult.<T>of(td.execute(request));
} else {
if (request.getConstructor() == Close.CONSTRUCTOR) {
return TdResult.<T>of(new Ok());
}
throw new IllegalStateException("TDLib client is destroyed");
}
}).publishOn(Schedulers.boundedElastic()).single()).subscribeOn(tdScheduler);
} else {
return td.asMono().single().flatMap(td -> Mono.<TdResult<T>>create(sink -> {
if (td != null) {
td.send(request, v -> sink.success(TdResult.of(v)), sink::error);
} else {
if (request.getConstructor() == Close.CONSTRUCTOR) {
logger.trace("Sending close success to sink " + sink.toString());
sink.success(TdResult.<T>of(new Ok()));
} else {
logger.trace("Sending close error to sink " + sink.toString());
sink.error(new IllegalStateException("TDLib client is destroyed"));
}
}
})).single().subscribeOn(tdScheduler);
}
}
@Override
public Flux<TdResult<TdApi.Object>> receive(AsyncTdDirectOptions options) {
// If closed it will be either true or false
final One<Boolean> closedFromTd = Sinks.one();
return Flux.<TdResult<TdApi.Object>>create(emitter -> {
var client = ClientManager.create((Object object) -> {
emitter.next(TdResult.of(object));
// Close the emitter if receive closed state
if (object.getConstructor() == UpdateAuthorizationState.CONSTRUCTOR
&& ((UpdateAuthorizationState) object).authorizationState.getConstructor()
== AuthorizationStateClosed.CONSTRUCTOR) {
logger.debug("Received closed status from tdlib");
closedFromTd.tryEmitValue(true);
emitter.complete();
}
}, emitter::error, emitter::error);
try {
this.td.tryEmitValue(client).orThrow();
} catch (Exception ex) {
emitter.error(ex);
}
// Send close if the stream is disposed before tdlib is closed
emitter.onDispose(() -> {
// Try to emit false, so that if it has not been closed from tdlib, now it is explicitly false.
closedFromTd.tryEmitValue(false);
closedFromTd.asMono()
.doOnNext(isClosedFromTd -> {
if (!isClosedFromTd) {
logger.warn("The stream has been disposed without closing tdlib. Sending TdApi.Close()...");
client.send(new Close(),
result -> logger.warn("Close result: {}", result),
ex -> logger.error("Error when disposing td client", ex)
);
}
})
.subscribeOn(tdScheduler)
.subscribe();
});
}).subscribeOn(tdScheduler);
}
}