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ReactorPromise.groovy
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/
ReactorPromise.groovy
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/*
* Copyright 2014 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 org.grails.async.factory.reactor
import grails.async.Promise
import groovy.transform.CompileStatic
import reactor.Environment
import reactor.fn.Consumer
import reactor.fn.Supplier
import reactor.rx.Promises
import java.util.concurrent.TimeUnit
import java.util.concurrent.TimeoutException
/**
* A {@link Promise} implementation for Reactor
*
* @author Graeme Rocher
* @since 3.0
*
* @deprecated Reactor promise integration is deprecated and will be removed in a future version of Grails
*/
@CompileStatic
@Deprecated
class ReactorPromise<T> implements Promise<T> {
reactor.rx.Promise<T> internalPromise
ReactorPromise(Closure<T> callable, Environment environment) {
this.internalPromise = Promises.task(environment, Environment.cachedDispatcher(), callable as Supplier<T>)
}
ReactorPromise(reactor.rx.Promise promise) {
if(promise == null ) throw new IllegalArgumentException("Argument [promise] cannot be null")
this.internalPromise = promise
}
@Override
boolean cancel(boolean mayInterruptIfRunning) {
throw new UnsupportedOperationException("Cancellation not supported")
}
@Override
boolean isCancelled() {
return false
}
@Override
boolean isDone() {
return internalPromise.isComplete()
}
@Override
Promise<T> accept(T value) {
this.internalPromise.accept(value)
return this
}
@Override
T get() throws Throwable {
internalPromise.await()
}
@Override
T get(long timeout, TimeUnit units) throws Throwable {
T res = (T)internalPromise.await(timeout, units)
if(!internalPromise.success) {
throw new TimeoutException()
}
else {
return res
}
}
@Override
Promise<T> onComplete(Closure callable) {
new ReactorPromise<T>( internalPromise.onComplete( callable as Consumer ) )
}
@Override
Promise<T> onError(Closure callable) {
new ReactorPromise<T>( internalPromise.onError(callable as Consumer<Throwable>) )
}
@Override
Promise<T> then(Closure callable) {
return new ReactorPromise<T>( internalPromise.onSuccess( callable as Consumer<T> ) )
}
}