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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/*
* Copyright (c) 2016-present, RxJava Contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
* the License for the specific language governing permissions and limitations under the License.
*/
package io.reactivex.rxjava3.internal.operators.flowable;
import org.reactivestreams.Subscriber;
import io.reactivex.rxjava3.core.Flowable;
import io.reactivex.rxjava3.exceptions.Exceptions;
import io.reactivex.rxjava3.functions.Supplier;
import io.reactivex.rxjava3.internal.subscriptions.DeferredScalarSubscription;
import io.reactivex.rxjava3.plugins.RxJavaPlugins;
import java.util.Objects;
/**
* Call a Supplier for each incoming Subscriber and signal the returned value or the thrown exception.
* @param the value type and element type returned by the supplier and the flow
* @since 3.0.0
*/
public final class FlowableFromSupplier extends Flowable implements Supplier {
final Supplier extends T> supplier;
public FlowableFromSupplier(Supplier extends T> supplier) {
this.supplier = supplier;
}
@Override
public void subscribeActual(Subscriber super T> s) {
DeferredScalarSubscription deferred = new DeferredScalarSubscription<>(s);
s.onSubscribe(deferred);
T t;
try {
t = Objects.requireNonNull(supplier.get(), "The supplier returned a null value");
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
if (deferred.isCancelled()) {
RxJavaPlugins.onError(ex);
} else {
s.onError(ex);
}
return;
}
deferred.complete(t);
}
@Override
public T get() throws Throwable {
return Objects.requireNonNull(supplier.get(), "The supplier returned a null value");
}
}
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