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https://issues.apache.org/jira/browse/CXF-7535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16241368#comment-16241368
]
ASF GitHub Bot commented on CXF-7535:
-------------------------------------
reta commented on a change in pull request #331: [CXF-7535] Adding client &
server support for Project Reactor
URL: https://github.com/apache/cxf/pull/331#discussion_r149259533
##########
File path:
rt/rs/extensions/reactor/src/main/java/org/apache/cxf/jaxrs/reactor/client/FluxRxInvokerImpl.java
##########
@@ -0,0 +1,178 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.cxf.jaxrs.reactor.client;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+import javax.ws.rs.HttpMethod;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.core.GenericType;
+import javax.ws.rs.core.Response;
+import org.apache.cxf.jaxrs.client.WebClient;
+import static
org.apache.cxf.jaxrs.reactor.client.ReactorUtils.toCompletableFuture;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+import reactor.core.scheduler.Scheduler;
+import reactor.core.scheduler.Schedulers;
+
+public class FluxRxInvokerImpl implements FluxRxInvoker {
+ private static final String TRACE = "TRACE";
+ private final WebClient webClient;
+ private final Scheduler scheduler;
+ private final ExecutorService executorService;
+
+ FluxRxInvokerImpl(WebClient webClient, ExecutorService executorService) {
+ this.webClient = webClient;
+ this.executorService = executorService;
+ this.scheduler = executorService == null ? null :
Schedulers.fromExecutorService(executorService);
+ }
+
+ @Override
+ public Flux<Response> get() {
+ return method(HttpMethod.GET);
+ }
+
+ @Override
+ public <R> Flux<R> get(Class<R> responseType) {
+ return method(HttpMethod.GET, responseType);
+ }
+
+ @Override
+ public <R> Flux<R> get(GenericType<R> genericType) {
+ return method(HttpMethod.GET, genericType);
+ }
+
+ @Override
+ public Flux<Response> put(Entity<?> entity) {
+ return method(HttpMethod.PUT, entity);
+ }
+
+ @Override
+ public <R> Flux<R> put(Entity<?> entity, Class<R> responseType) {
+ return method(HttpMethod.PUT, responseType);
+ }
+
+ @Override
+ public <R> Flux<R> put(Entity<?> entity, GenericType<R> genericType) {
+ return method(HttpMethod.PUT, entity, genericType);
+ }
+
+ @Override
+ public Flux<Response> post(Entity<?> entity) {
+ return method(HttpMethod.POST, entity);
+ }
+
+ @Override
+ public <R> Flux<R> post(Entity<?> entity, Class<R> responseType) {
+ return method(HttpMethod.POST, entity, responseType);
+ }
+
+ @Override
+ public <R> Flux<R> post(Entity<?> entity, GenericType<R> genericType) {
+ return method(HttpMethod.POST, entity, genericType);
+ }
+
+ @Override
+ public Flux<Response> delete() {
+ return method(HttpMethod.DELETE);
+ }
+
+ @Override
+ public <R> Flux<R> delete(Class<R> responseType) {
+ return method(HttpMethod.DELETE, responseType);
+ }
+
+ @Override
+ public <R> Flux<R> delete(GenericType<R> genericType) {
+ return method(HttpMethod.DELETE, genericType);
+ }
+
+ @Override
+ public Flux<Response> head() {
+ return method(HttpMethod.HEAD);
+ }
+
+ @Override
+ public Flux<Response> options() {
+ return method(HttpMethod.OPTIONS);
+ }
+
+ @Override
+ public <R> Flux<R> options(Class<R> responseType) {
+ return method(HttpMethod.OPTIONS, responseType);
+ }
+
+ @Override
+ public <R> Flux<R> options(GenericType<R> genericType) {
+ return method(HttpMethod.OPTIONS, genericType);
+ }
+
+ @Override
+ public Flux<Response> trace() {
+ return method(TRACE);
+ }
+
+ @Override
+ public <R> Flux<R> trace(Class<R> responseType) {
+ return method(TRACE, responseType);
+ }
+
+ @Override
+ public <R> Flux<R> trace(GenericType<R> genericType) {
+ return method(TRACE, genericType);
+ }
+
+ @Override
+ public Flux<Response> method(String name) {
+ return method(name, Response.class);
+ }
+
+ @Override
+ public <R> Flux<R> method(String name, Class<R> responseType) {
+ return flux(webClient.async().method(name, responseType));
+ }
+
+ @Override
+ public <R> Flux<R> method(String name, GenericType<R> genericType) {
+ return flux(webClient.async().method(name, genericType));
+ }
+
+ @Override
+ public Flux<Response> method(String name, Entity<?> entity) {
+ return method(name, entity, Response.class);
+ }
+
+ @Override
+ public <R> Flux<R> method(String name, Entity<?> entity, Class<R>
responseType) {
+ return flux(webClient.async().method(name, entity, responseType));
+ }
+
+ @Override
+ public <R> Flux<R> method(String name, Entity<?> entity, GenericType<R>
genericType) {
+ return flux(webClient.async().method(name, entity, genericType));
+ }
+
+ private <R> Flux<R> flux(Future<R> future) {
+ Flux<R> flux = Flux.from(Mono.fromFuture(toCompletableFuture(future,
executorService)));
+ if (scheduler != null) {
Review comment:
@johnament Thanks for passing the `executorService` to
`toCompletableFuture`. The `scheduler` and this snippet:
```
if (scheduler != null) {
flux = flux.subscribeOn(scheduler);
}
```
are not needed. The reason is that the completion callback for
`Mono.fromFuture` will be called in one of the `executorService` threads or
`ForkJoin` pool (you could easily trace it). Moreover, we could run into issues
with this code because it uses two threads from the same pool for
`toCompletableFuture` and subscription, exposing ourselves for likelihood of
livelocks.
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> Support for Project Reactor as rx()
> -----------------------------------
>
> Key: CXF-7535
> URL: https://issues.apache.org/jira/browse/CXF-7535
> Project: CXF
> Issue Type: New Feature
> Components: JAX-RS
> Affects Versions: 3.2.0
> Reporter: John D. Ament
>
> It would be good if Project Reactor was supported as an rx() type in CXF.
> https://github.com/apache/cxf/tree/master/rt/rs/extensions/rx - only shows rx
> java and rx java 2. project reactor/reactor core seem like the v3's of this
> api stack.
> https://projectreactor.io/
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