public abstract class RxJavaObservableExecutionHook
extends java.lang.Object
Observable execution with a
default no-op implementation.
See RxJavaPlugins or the RxJava GitHub Wiki for information on configuring plugins:
https://github.com/ReactiveX/RxJava/wiki/Plugins.
Note on thread-safety and performance:
A single implementation of this class will be used globally so methods on this class will be invoked concurrently from multiple threads so all functionality must be thread-safe.
Methods are also invoked synchronously and will add to execution time of the observable so all behavior should be fast. If anything time-consuming is to be done it should be spawned asynchronously onto separate worker threads.
| Constructor and Description |
|---|
RxJavaObservableExecutionHook() |
| Modifier and Type | Method and Description |
|---|---|
<T> Observable.OnSubscribe<T> |
onCreate(Observable.OnSubscribe<T> f)
Invoked during the construction by
Observable.create(OnSubscribe) |
<T,R> Observable.Operator<? extends R,? super T> |
onLift(Observable.Operator<? extends R,? super T> lift)
Invoked just as the operator functions is called to bind two operations together into a new
Observable and the return value is used as the lifted function |
<T> java.lang.Throwable |
onSubscribeError(java.lang.Throwable e)
Invoked after failed execution of
Observable.subscribe(Subscriber) with thrown Throwable. |
<T> Subscription |
onSubscribeReturn(Subscription subscription)
Invoked after successful execution of
Observable.subscribe(rx.Subscriber) with returned
Subscription. |
<T> Observable.OnSubscribe<T> |
onSubscribeStart(Observable<? extends T> observableInstance,
Observable.OnSubscribe<T> onSubscribe)
Invoked before
Observable.subscribe(rx.Subscriber) is about to be executed. |
public <T> Observable.OnSubscribe<T> onCreate(Observable.OnSubscribe<T> f)
Observable.create(OnSubscribe)
This can be used to decorate or replace the onSubscribe function or just perform extra
logging, metrics and other such things and pass through the function.
f - original Observable.OnSubscribe<T> to be executedObservable.OnSubscribe<T> function that can be modified, decorated, replaced or just
returned as a pass throughpublic <T> Observable.OnSubscribe<T> onSubscribeStart(Observable<? extends T> observableInstance, Observable.OnSubscribe<T> onSubscribe)
Observable.subscribe(rx.Subscriber) is about to be executed.
This can be used to decorate or replace the onSubscribe function or just perform extra
logging, metrics and other such things and pass through the function.
onSubscribe - original Observable.OnSubscribe<T> to be executedObservable.OnSubscribe<T> function that can be modified, decorated, replaced or just
returned as a pass throughpublic <T> Subscription onSubscribeReturn(Subscription subscription)
Observable.subscribe(rx.Subscriber) with returned
Subscription.
This can be used to decorate or replace the Subscription instance or just perform extra logging,
metrics and other such things and pass through the subscription.
subscription - original SubscriptionSubscription subscription that can be modified, decorated, replaced or just returned as a
pass throughpublic <T> java.lang.Throwable onSubscribeError(java.lang.Throwable e)
Observable.subscribe(Subscriber) with thrown Throwable.
This is not errors emitted via Observer.onError(Throwable) but exceptions thrown when
attempting to subscribe to a Func1<Subscriber<T>, Subscription>.
e - Throwable thrown by Observable.subscribe(Subscriber)public <T,R> Observable.Operator<? extends R,? super T> onLift(Observable.Operator<? extends R,? super T> lift)
Observable and the return value is used as the lifted function
This can be used to decorate or replace the Observable.Operator instance or just perform extra
logging, metrics and other such things and pass through the onSubscribe.
lift - original Observable.Operator<R, T>Observable.Operator<R, T> function that can be modified, decorated, replaced or just
returned as a pass through