io.micronaut.reactive.rxjava2.RxInstrumentedConnectableObservable Maven / Gradle / Ivy
/*
* Copyright 2017-2019 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.ReactiveInstrumenter;
import io.micronaut.scheduling.instrument.RunnableInstrumenter;
import io.reactivex.Observer;
import io.reactivex.disposables.Disposable;
import io.reactivex.functions.Consumer;
import io.reactivex.observables.ConnectableObservable;
import java.util.Collection;
import java.util.List;
/**
* 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.
*
* @param The type
* @author graemerocher
* @since 1.1
*/
@Internal
final class RxInstrumentedConnectableObservable extends ConnectableObservable implements RxInstrumentedComponent {
private final ConnectableObservable source;
private final List instrumentations;
/**
* Default constructor.
* @param source The source
* @param instrumentations The instrumentations
*/
RxInstrumentedConnectableObservable(
ConnectableObservable source, List instrumentations) {
this.source = source;
this.instrumentations = instrumentations;
}
/**
* Default constructor.
* @param source The source
* @param instrumentations The instrumentations
*/
RxInstrumentedConnectableObservable(
ConnectableObservable source, Collection instrumentations) {
this.source = source;
this.instrumentations = toRunnableInstrumenters(instrumentations);
}
@Override protected void subscribeActual(Observer o) {
source.subscribe(new RxInstrumentedObserver<>(o, instrumentations));
}
@Override public void connect(Consumer connection) {
Runnable onConnect = () -> source.connect(connection);
for (RunnableInstrumenter instrumentation : instrumentations) {
onConnect = instrumentation.instrument(onConnect);
}
onConnect.run();
}
}