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RxJava 3.x extra sources, operators and components and ports of many 1.x companion libraries.
/*
* Copyright 2016-2019 David Karnok
*
* 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 hu.akarnokd.rxjava3.debug;
import java.util.concurrent.atomic.AtomicBoolean;
import io.reactivex.rxjava3.core.*;
import io.reactivex.rxjava3.flowables.ConnectableFlowable;
import io.reactivex.rxjava3.functions.*;
import io.reactivex.rxjava3.internal.fuseable.ScalarSupplier;
import io.reactivex.rxjava3.observables.ConnectableObservable;
import io.reactivex.rxjava3.parallel.ParallelFlowable;
import io.reactivex.rxjava3.plugins.RxJavaPlugins;
/**
* Utility class to enable and disable tracking of operator application ({@code source.map().filter()})
* by capturing the current stacktrace (warning: very expensive!), have it in a debug-time accessible
* field (when walking the references in a debugger) and append it to exceptions passing by the
* regular {@code onError}.
*/
public final class RxJavaAssemblyTracking {
/** Simply lock out concurrent state changes. */
static final AtomicBoolean lock = new AtomicBoolean();
/** Utility class. */
private RxJavaAssemblyTracking() {
throw new IllegalStateException("No instances!");
}
/**
* Enable the assembly tracking.
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public static void enable() {
if (lock.compareAndSet(false, true)) {
RxJavaPlugins.setOnFlowableAssembly(new Function() {
@Override
public Flowable apply(Flowable f) throws Exception {
if (f instanceof Supplier) {
if (f instanceof ScalarSupplier) {
return new FlowableOnAssemblyScalarSupplier(f);
}
return new FlowableOnAssemblySupplier(f);
}
return new FlowableOnAssembly(f);
}
});
RxJavaPlugins.setOnConnectableFlowableAssembly(new Function() {
@Override
public ConnectableFlowable apply(ConnectableFlowable f) throws Exception {
return new FlowableOnAssemblyConnectable(f);
}
});
RxJavaPlugins.setOnObservableAssembly(new Function() {
@Override
public Observable apply(Observable f) throws Exception {
if (f instanceof Supplier) {
if (f instanceof ScalarSupplier) {
return new ObservableOnAssemblyScalarSupplier(f);
}
return new ObservableOnAssemblySupplier(f);
}
return new ObservableOnAssembly(f);
}
});
RxJavaPlugins.setOnConnectableObservableAssembly(new Function() {
@Override
public ConnectableObservable apply(ConnectableObservable f) throws Exception {
return new ObservableOnAssemblyConnectable(f);
}
});
RxJavaPlugins.setOnSingleAssembly(new Function() {
@Override
public Single apply(Single f) throws Exception {
if (f instanceof Supplier) {
if (f instanceof ScalarSupplier) {
return new SingleOnAssemblyScalarSupplier(f);
}
return new SingleOnAssemblySupplier(f);
}
return new SingleOnAssembly(f);
}
});
RxJavaPlugins.setOnCompletableAssembly(new Function() {
@Override
public Completable apply(Completable f) throws Exception {
if (f instanceof Supplier) {
if (f instanceof ScalarSupplier) {
return new CompletableOnAssemblyScalarSupplier(f);
}
return new CompletableOnAssemblySupplier(f);
}
return new CompletableOnAssembly(f);
}
});
RxJavaPlugins.setOnMaybeAssembly(new Function() {
@Override
public Maybe apply(Maybe f) throws Exception {
if (f instanceof Supplier) {
if (f instanceof ScalarSupplier) {
return new MaybeOnAssemblyScalarSupplier(f);
}
return new MaybeOnAssemblySupplier(f);
}
return new MaybeOnAssembly(f);
}
});
RxJavaPlugins.setOnParallelAssembly(new Function() {
@Override
public ParallelFlowable apply(ParallelFlowable t) throws Exception {
return new ParallelFlowableOnAssembly(t);
}
});
lock.set(false);
}
}
/**
* Disable the assembly tracking.
*/
public static void disable() {
if (lock.compareAndSet(false, true)) {
RxJavaPlugins.setOnCompletableAssembly(null);
RxJavaPlugins.setOnSingleAssembly(null);
RxJavaPlugins.setOnMaybeAssembly(null);
RxJavaPlugins.setOnObservableAssembly(null);
RxJavaPlugins.setOnFlowableAssembly(null);
RxJavaPlugins.setOnConnectableObservableAssembly(null);
RxJavaPlugins.setOnConnectableFlowableAssembly(null);
RxJavaPlugins.setOnParallelAssembly(null);
lock.set(false);
}
}
}