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io.micronaut.reactive.rxjava2.RxInstrumentedWrappers Maven / Gradle / Ivy
/*
* Copyright 2017-2020 original authors
*
* 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.micronaut.reactive.rxjava2;
import io.micronaut.core.annotation.Internal;
import io.micronaut.scheduling.instrument.InvocationInstrumenter;
import io.reactivex.Completable;
import io.reactivex.CompletableObserver;
import io.reactivex.Flowable;
import io.reactivex.FlowableSubscriber;
import io.reactivex.Maybe;
import io.reactivex.MaybeObserver;
import io.reactivex.Observable;
import io.reactivex.Observer;
import io.reactivex.Single;
import io.reactivex.SingleObserver;
import io.reactivex.flowables.ConnectableFlowable;
import io.reactivex.observables.ConnectableObservable;
import io.reactivex.parallel.ParallelFlowable;
import org.reactivestreams.Subscriber;
/**
* Inspired by code in Brave. Provides general instrumentation abstraction for RxJava2.
* See https://github.com/openzipkin/brave/tree/master/context/rxjava2/src/main/java/brave/context/rxjava2/internal.
*
* @author graemerocher
* @since 1.1
*/
@Internal
final class RxInstrumentedWrappers {
/**
* Wrap a subscriber.
*
* @param downstream The downstream subscriber
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static Subscriber wrap(Subscriber downstream, RxInstrumenterFactory instrumenterFactory) {
if (downstream instanceof RxInstrumentedComponent) {
return downstream;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter != null) {
if (downstream instanceof FlowableSubscriber) {
return new RxInstrumentedFlowableSubscriber<>(downstream, instrumenterFactory);
} else {
return new RxInstrumentedSubscriber<>(downstream, instrumenterFactory);
}
} else {
return downstream;
}
}
/**
* Wrap a completable source.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @return The wrapped subscriber
*/
static Completable wrap(Completable source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter == null) {
return source;
}
return new RxInstrumentedCompletable(source, instumenter);
}
/**
* Wrap a maybe.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static Maybe wrap(Maybe source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter == null) {
return source;
}
return new RxInstrumentedMaybe<>(source, instumenter);
}
/**
* Wrap a single.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static Single wrap(Single source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter == null) {
return source;
}
return new RxInstrumentedSingle<>(source, instumenter);
}
/**
* Wrap a observable.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static Observable wrap(Observable source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter == null) {
return source;
}
return new RxInstrumentedObservable<>(source, instumenter);
}
/**
* Wrap a connectable observable.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static ConnectableObservable wrap(ConnectableObservable source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter == null) {
return source;
}
return new RxInstrumentedConnectableObservable<>(source, instumenter);
}
/**
* Wrap a flowable.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static Flowable wrap(Flowable source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter == null) {
return source;
}
return new RxInstrumentedFlowable<>(source, instumenter);
}
/**
* Wrap a flowable.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static ConnectableFlowable wrap(ConnectableFlowable source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
final InvocationInstrumenter instumenter = instrumenterFactory.create();
if (instumenter == null) {
return source;
}
return new RxInstrumentedConnectableFlowable<>(source, instumenter);
}
/**
* Wrap a parallel flowable.
*
* @param source The source
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static ParallelFlowable wrap(ParallelFlowable source, RxInstrumenterFactory instrumenterFactory) {
if (source instanceof RxInstrumentedComponent) {
return source;
}
return new RxInstrumentedParallelFlowable<>(source, instrumenterFactory);
}
/**
* Wrap a observer.
*
* @param downstream The downstream observer
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static Observer wrap(Observer downstream, RxInstrumenterFactory instrumenterFactory) {
if (downstream instanceof RxInstrumentedComponent) {
return downstream;
}
final InvocationInstrumenter instrumenter = instrumenterFactory.create();
if (instrumenter != null) {
return new RxInstrumentedObserver<>(downstream, instrumenterFactory);
}
return downstream;
}
/**
* Wrap a observer.
*
* @param downstream The downstream observer
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static SingleObserver wrap(SingleObserver downstream, RxInstrumenterFactory instrumenterFactory) {
if (downstream instanceof RxInstrumentedComponent) {
return downstream;
}
final InvocationInstrumenter instrumenter = instrumenterFactory.create();
if (instrumenter != null) {
return new RxInstrumentedSingleObserver<>(downstream, instrumenterFactory);
}
return downstream;
}
/**
* Wrap a observer.
*
* @param downstream The downstream observer
* @param instrumenterFactory The instrumenterFactory
* @param The type
* @return The wrapped subscriber
*/
static MaybeObserver wrap(MaybeObserver downstream, RxInstrumenterFactory instrumenterFactory) {
if (downstream instanceof RxInstrumentedComponent) {
return downstream;
}
final InvocationInstrumenter instrumenter = instrumenterFactory.create();
if (instrumenter != null) {
return new RxInstrumentedMaybeObserver<>(downstream, instrumenterFactory);
}
return downstream;
}
/**
* Wrap a observer.
*
* @param downstream The downstream observer
* @param instrumenterFactory The instrumenterFactory
* @return The wrapped subscriber
*/
static CompletableObserver wrap(CompletableObserver downstream, RxInstrumenterFactory instrumenterFactory) {
if (downstream instanceof RxInstrumentedComponent) {
return downstream;
}
final InvocationInstrumenter instrumenter = instrumenterFactory.create();
if (instrumenter != null) {
return new RxInstrumentedCompletableObserver(downstream, instrumenterFactory);
} else {
return downstream;
}
}
}
