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/*
* ============LICENSE_START=======================================================
* BBS-RELOCATION-CPE-AUTHENTICATION-HANDLER
* ================================================================================
* Copyright (C) 2019 NOKIA 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.bbs.event.processor.tasks;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.net.ssl.SSLException;
import org.onap.bbs.event.processor.config.ApplicationConfiguration;
import org.onap.bbs.event.processor.config.ConfigurationChangeObserver;
import org.onap.bbs.event.processor.exceptions.EmptyDmaapResponseException;
import org.onap.bbs.event.processor.model.CpeAuthenticationConsumerDmaapModel;
import org.onap.bbs.event.processor.utilities.CpeAuthenticationDmaapConsumerJsonParser;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.service.consumer.ConsumerReactiveHttpClientFactory;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.service.consumer.DMaaPConsumerReactiveHttpClient;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.service.consumer.DMaaPReactiveWebClientFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
@Component
public class DmaapCpeAuthenticationConsumerTaskImpl
implements DmaapCpeAuthenticationConsumerTask, ConfigurationChangeObserver {
private static final Logger LOGGER = LoggerFactory.getLogger(DmaapCpeAuthenticationConsumerTaskImpl.class);
private ApplicationConfiguration configuration;
private final CpeAuthenticationDmaapConsumerJsonParser cpeAuthenticationDmaapConsumerJsonParser;
private final ConsumerReactiveHttpClientFactory httpClientFactory;
private static final EmptyDmaapResponseException EMPTY_DMAAP_EXCEPTION =
new EmptyDmaapResponseException("CPE Authentication: Got an empty response from DMaaP");
private DMaaPConsumerReactiveHttpClient httpClient;
@Autowired
public DmaapCpeAuthenticationConsumerTaskImpl(ApplicationConfiguration configuration) throws SSLException {
this(configuration, new CpeAuthenticationDmaapConsumerJsonParser(),
new ConsumerReactiveHttpClientFactory(new DMaaPReactiveWebClientFactory()));
}
DmaapCpeAuthenticationConsumerTaskImpl(ApplicationConfiguration configuration,
CpeAuthenticationDmaapConsumerJsonParser
cpeAuthenticationDmaapConsumerJsonParser,
ConsumerReactiveHttpClientFactory httpClientFactory) throws SSLException {
this.configuration = configuration;
this.cpeAuthenticationDmaapConsumerJsonParser = cpeAuthenticationDmaapConsumerJsonParser;
this.httpClientFactory = httpClientFactory;
httpClient = httpClientFactory.create(this.configuration.getDmaapCpeAuthenticationConsumerConfiguration());
}
@PostConstruct
void registerForConfigChanges() {
configuration.register(this);
}
@PreDestroy
void unRegisterForConfigChanges() {
configuration.unRegister(this);
}
@Override
public synchronized void updateConfiguration() {
try {
LOGGER.info("DMaaP CPE authentication consumer update due to new application configuration");
httpClient = httpClientFactory.create(this.configuration.getDmaapCpeAuthenticationConsumerConfiguration());
} catch (SSLException e) {
LOGGER.error("SSL error while updating HTTP Client after a config update");
LOGGER.debug("SSL exception\n", e);
}
}
@Override
public Flux<CpeAuthenticationConsumerDmaapModel> execute(String taskName) {
LOGGER.debug("Executing task for CPE-Authentication with name \"{}\"", taskName);
DMaaPConsumerReactiveHttpClient httpClient = getHttpClient();
Mono<String> response = httpClient.getDMaaPConsumerResponse();
return cpeAuthenticationDmaapConsumerJsonParser.extractModelFromDmaap(response)
.switchIfEmpty(Flux.error(EMPTY_DMAAP_EXCEPTION))
.doOnError(e -> {
if (!(e instanceof EmptyDmaapResponseException)) {
LOGGER.error("DMaaP Consumption Exception: {}", e.getMessage());
LOGGER.debug("Exception\n", e);
}
});
}
private synchronized DMaaPConsumerReactiveHttpClient getHttpClient() {
return httpClient;
}
}
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