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/*
* ================================================================================
* Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*
*/
package org.onap.dcae.analytics.web.dmaap;
import java.net.URL;
import java.util.List;
import java.util.function.Supplier;
import org.onap.dcae.analytics.model.AnalyticsHttpConstants;
import org.onap.dcae.analytics.model.util.supplier.UnboundedSupplier;
import org.onap.dcae.analytics.web.util.AnalyticsWebUtils;
import org.onap.dcae.analytics.web.util.function.MrSubscriberURLFunction;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.Message;
/**
* Provides DMaaP MR Subscriber Trigger Message
*
* @author Rajiv Singla
*/
public class MrTriggerMessageProvider {
private static final Logger logger = LoggerFactory.getLogger(MrTriggerMessageProvider.class);
public static final String TRIGGER_METHOD_NAME = "getTriggerMessage";
private final Supplier<URL> subscriberUrlSupplier;
public MrTriggerMessageProvider(final MrSubscriberPreferences subscriberPreferences) {
final List<URL> urls = new MrSubscriberURLFunction().apply(subscriberPreferences);
subscriberUrlSupplier = new UnboundedSupplier<>(urls.toArray(new URL[urls.size()]));
}
/**
* DMaaP MR subscriber trigger message
*
* @return dmaap mr subscriber trigger message
*/
public Message<String> getTriggerMessage() {
final String requestId = AnalyticsWebUtils.REQUEST_ID_SUPPLIER.get();
final String transactionId = AnalyticsWebUtils.RANDOM_ID_SUPPLIER.get();
final String beginTimestamp = AnalyticsWebUtils.CREATION_TIMESTAMP_SUPPLIER.get();
logger.debug("Request Id: {}. Transaction Id: {}. Begin TS: {}. Starting new DMaaP MR Subscriber poll.",
requestId, transactionId, beginTimestamp);
return MessageBuilder
.withPayload(subscriberUrlSupplier.get().toString())
.setHeader(AnalyticsHttpConstants.REQUEST_ID_HEADER_KEY, requestId)
.setHeader(AnalyticsHttpConstants.REQUEST_TRANSACTION_ID_HEADER_KEY, transactionId)
.setHeader(AnalyticsHttpConstants.REQUEST_BEGIN_TS_HEADER_KEY, beginTimestamp)
.build();
}
}
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