2 * ============LICENSE_START====================================
3 * DCAEGEN2-SERVICES-SDK
4 * =========================================================
5 * Copyright (C) 2019 Nokia. All rights reserved.
6 * =========================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=====================================
21 package org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.api;
23 import com.google.gson.JsonElement;
24 import java.time.Duration;
25 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
26 import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.MessageRouterSubscribeRequest;
27 import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.MessageRouterSubscribeResponse;
28 import reactor.core.publisher.Flux;
29 import reactor.core.publisher.Mono;
32 * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
35 public interface MessageRouterSubscriber {
37 Mono<MessageRouterSubscribeResponse> get(MessageRouterSubscribeRequest request);
39 default Flux<JsonElement> getElements(MessageRouterSubscribeRequest request) {
41 .doOnNext(response -> {
42 if (response.failed()) {
43 throw new IllegalStateException(response.failReason());
46 .filter(MessageRouterSubscribeResponse::hasElements)
47 .flatMapMany(response -> Flux.fromIterable(response.items()));
50 default Flux<JsonElement> subscribeForElements(MessageRouterSubscribeRequest request, Duration period) {
51 return Flux.interval(period).concatMap(i->getElements(request));