forked from ReactiveX/RxJava
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Fix Flowable.blockingSubscribe is unbounded and can lead to OOME (Rea…
…ctiveX#5988) Create BoundedSubscriber
- Loading branch information
1 parent
5f1ce20
commit f56c4ed
Showing
5 changed files
with
364 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
126 changes: 126 additions & 0 deletions
126
src/main/java/io/reactivex/internal/subscribers/BoundedSubscriber.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,126 @@ | ||
package io.reactivex.internal.subscribers; | ||
|
||
import io.reactivex.FlowableSubscriber; | ||
import io.reactivex.disposables.Disposable; | ||
import io.reactivex.exceptions.CompositeException; | ||
import io.reactivex.exceptions.Exceptions; | ||
import io.reactivex.functions.Action; | ||
import io.reactivex.functions.Consumer; | ||
import io.reactivex.internal.functions.Functions; | ||
import io.reactivex.internal.subscriptions.SubscriptionHelper; | ||
import io.reactivex.observers.LambdaConsumerIntrospection; | ||
import io.reactivex.plugins.RxJavaPlugins; | ||
import org.reactivestreams.Subscription; | ||
|
||
import java.util.concurrent.atomic.AtomicInteger; | ||
import java.util.concurrent.atomic.AtomicReference; | ||
|
||
public final class BoundedSubscriber<T> extends AtomicReference<Subscription> | ||
implements FlowableSubscriber<T>, Subscription, Disposable, LambdaConsumerIntrospection { | ||
|
||
private static final long serialVersionUID = -7251123623727029452L; | ||
final Consumer<? super T> onNext; | ||
final Consumer<? super Throwable> onError; | ||
final Action onComplete; | ||
final Consumer<? super Subscription> onSubscribe; | ||
|
||
private int bufferSize; | ||
private final AtomicInteger internalBuffer; | ||
|
||
public BoundedSubscriber(Consumer<? super T> onNext, Consumer<? super Throwable> onError, | ||
Action onComplete, | ||
Consumer<? super Subscription> onSubscribe) { | ||
super(); | ||
this.onNext = onNext; | ||
this.onError = onError; | ||
this.onComplete = onComplete; | ||
this.onSubscribe = onSubscribe; | ||
this.bufferSize = ((Functions.BoundedConsumer) onSubscribe).getBufferSize(); | ||
this.internalBuffer = new AtomicInteger(0); | ||
} | ||
|
||
@Override | ||
public void onSubscribe(Subscription s) { | ||
if (SubscriptionHelper.setOnce(this, s)) { | ||
try { | ||
onSubscribe.accept(this); | ||
} catch (Throwable e) { | ||
Exceptions.throwIfFatal(e); | ||
s.cancel(); | ||
onError(e); | ||
} | ||
} | ||
} | ||
|
||
@Override | ||
public void onNext(T t) { | ||
if (!isDisposed()) { | ||
try { | ||
if (internalBuffer.getAndIncrement() < bufferSize) { | ||
onNext.accept(t); | ||
} | ||
if (internalBuffer.get() == bufferSize) { | ||
onComplete.run(); | ||
get().cancel(); | ||
} | ||
} catch (Throwable e) { | ||
Exceptions.throwIfFatal(e); | ||
get().cancel(); | ||
onError(e); | ||
} | ||
} | ||
} | ||
|
||
@Override | ||
public void onError(Throwable t) { | ||
if (get() != SubscriptionHelper.CANCELLED) { | ||
lazySet(SubscriptionHelper.CANCELLED); | ||
try { | ||
onError.accept(t); | ||
} catch (Throwable e) { | ||
Exceptions.throwIfFatal(e); | ||
RxJavaPlugins.onError(new CompositeException(t, e)); | ||
} | ||
} else { | ||
RxJavaPlugins.onError(t); | ||
} | ||
} | ||
|
||
@Override | ||
public void onComplete() { | ||
if (get() != SubscriptionHelper.CANCELLED) { | ||
lazySet(SubscriptionHelper.CANCELLED); | ||
try { | ||
onComplete.run(); | ||
} catch (Throwable e) { | ||
Exceptions.throwIfFatal(e); | ||
RxJavaPlugins.onError(e); | ||
} | ||
} | ||
} | ||
|
||
@Override | ||
public void dispose() { | ||
cancel(); | ||
} | ||
|
||
@Override | ||
public boolean isDisposed() { | ||
return get() == SubscriptionHelper.CANCELLED; | ||
} | ||
|
||
@Override | ||
public void request(long n) { | ||
get().request(n); | ||
} | ||
|
||
@Override | ||
public void cancel() { | ||
SubscriptionHelper.cancel(this); | ||
} | ||
|
||
@Override | ||
public boolean hasCustomOnError() { | ||
return onError != Functions.ON_ERROR_MISSING; | ||
} | ||
} |
Oops, something went wrong.