2 * ================================================================================
3 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 * ============LICENSE_END=========================================================
20 package org.onap.dcae.analytics.web.dmaap;
24 import java.util.List;
25 import java.util.function.Supplier;
27 import org.onap.dcae.analytics.model.AnalyticsHttpConstants;
28 import org.onap.dcae.analytics.model.util.supplier.UnboundedSupplier;
29 import org.onap.dcae.analytics.web.util.AnalyticsWebUtils;
30 import org.onap.dcae.analytics.web.util.function.MrSubscriberURLFunction;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
33 import org.springframework.integration.support.MessageBuilder;
34 import org.springframework.messaging.Message;
37 * Provides DMaaP MR Subscriber Trigger Message
39 * @author Rajiv Singla
41 public class MrTriggerMessageProvider {
43 private static final Logger logger = LoggerFactory.getLogger(MrTriggerMessageProvider.class);
45 public static final String TRIGGER_METHOD_NAME = "getTriggerMessage";
47 private final Supplier<URL> subscriberUrlSupplier;
49 public MrTriggerMessageProvider(final MrSubscriberPreferences subscriberPreferences) {
50 final List<URL> urls = new MrSubscriberURLFunction().apply(subscriberPreferences);
51 subscriberUrlSupplier = new UnboundedSupplier<>(urls.toArray(new URL[urls.size()]));
55 * DMaaP MR subscriber trigger message
57 * @return dmaap mr subscriber trigger message
59 public Message<String> getTriggerMessage() {
60 final String requestId = AnalyticsWebUtils.REQUEST_ID_SUPPLIER.get();
61 final String transactionId = AnalyticsWebUtils.RANDOM_ID_SUPPLIER.get();
62 final String beginTimestamp = AnalyticsWebUtils.CREATION_TIMESTAMP_SUPPLIER.get();
63 logger.debug("Request Id: {}. Transaction Id: {}. Begin TS: {}. Starting new DMaaP MR Subscriber poll.",
64 requestId, transactionId, beginTimestamp);
66 .withPayload(subscriberUrlSupplier.get().toString())
67 .setHeader(AnalyticsHttpConstants.REQUEST_ID_HEADER_KEY, requestId)
68 .setHeader(AnalyticsHttpConstants.REQUEST_TRANSACTION_ID_HEADER_KEY, transactionId)
69 .setHeader(AnalyticsHttpConstants.REQUEST_BEGIN_TS_HEADER_KEY, beginTimestamp)