org.summerboot.jexpress.integration.httpclient.HTTPClientStringSubscriber Maven / Gradle / Ivy
/*
* Copyright 2005-2022 Du Law Office - The Summer Boot Framework Project
*
* The Summer Boot Project 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 and you have no
* policy prohibiting employee contributions back to this file (unless the contributor to this
* file is your current or retired employee). You may obtain a copy of the License at:
*
* https://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.summerboot.jexpress.integration.httpclient;
import java.net.http.HttpResponse.BodySubscriber;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.Flow;
/**
* @author daniel, Changski Tie Zheng Zhang, Du Xiao
*/
public class HTTPClientStringSubscriber implements Flow.Subscriber {
protected final BodySubscriber wrapped;
public HTTPClientStringSubscriber(BodySubscriber wrapped) {
this.wrapped = wrapped;
}
@Override
public void onSubscribe(Flow.Subscription subscription) {
wrapped.onSubscribe(subscription);
}
@Override
public void onNext(ByteBuffer item) {
wrapped.onNext(List.of(item));
}
@Override
public void onError(Throwable throwable) {
wrapped.onError(throwable);
}
@Override
public void onComplete() {
wrapped.onComplete();
}
}
/* usage
// one of the subscribers is likely to fail if concurrently subscribed to the body publisher when executing this code,
String reqbody = null;
Optional pub = req.bodyPublisher();
if (pub.isPresent()) {
reqbody = pub.map(p -> {
var bodySubscriber = BodySubscribers.ofString(StandardCharsets.UTF_8);
var flowSubscriber = new HTTPClientStringSubscriber(bodySubscriber);
p.subscribe(flowSubscriber);
return bodySubscriber.getBody().toCompletableFuture().join();
}).get();
}
System.out.println(reqbody);
*/