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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* Copyright (C) 2020 Nokia. 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.dcaegen2.collectors.datafile.tasks;
import com.google.gson.JsonElement;
import com.google.gson.JsonParser;
import java.io.File;
import java.net.URI;
import java.nio.file.Path;
import java.time.Duration;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.FileEntity;
import org.onap.dcaegen2.collectors.datafile.configuration.AppConfig;
import org.onap.dcaegen2.collectors.datafile.configuration.PublisherConfiguration;
import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
import org.onap.dcaegen2.collectors.datafile.model.Counters;
import org.onap.dcaegen2.collectors.datafile.model.FilePublishInformation;
import org.onap.dcaegen2.collectors.datafile.model.JsonSerializer;
import org.onap.dcaegen2.collectors.datafile.model.logging.MappedDiagnosticContext;
import org.onap.dcaegen2.collectors.datafile.service.HttpUtils;
import org.onap.dcaegen2.collectors.datafile.service.producer.DmaapProducerHttpClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.springframework.core.io.FileSystemResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.web.util.DefaultUriBuilderFactory;
import reactor.core.publisher.Mono;
import reactor.util.retry.Retry;
/**
* Publishes a file to the DataRouter.
*
* @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 4/13/18
* @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
*/
public class DataRouterPublisher {
private static final String X_DMAAP_DR_META = "X-DMAAP-DR-META";
private static final String CONTENT_TYPE = "application/octet-stream";
private static final Logger logger = LoggerFactory.getLogger(DataRouterPublisher.class);
private final AppConfig datafileAppConfig;
private final Counters counters;
public DataRouterPublisher(AppConfig datafileAppConfig, Counters counters) {
this.datafileAppConfig = datafileAppConfig;
this.counters = counters;
}
/**
* Publish one file.
*
* @param publishInfo information about the file to publish
* @param numRetries the maximal number of retries if the publishing fails
* @param firstBackoff the time to delay the first retry
* @return the (same) filePublishInformation
*/
public Mono<FilePublishInformation> publishFile(FilePublishInformation publishInfo, long numRetries,
Duration firstBackoff) {
MDC.setContextMap(publishInfo.getContext());
return Mono.just(publishInfo) //
.cache() //
.flatMap(this::publishFile) //
.flatMap(httpStatus -> handleHttpResponse(httpStatus, publishInfo)) //
.retryWhen(Retry.backoff(numRetries,firstBackoff));
}
private Mono<HttpStatus> publishFile(FilePublishInformation publishInfo) {
MDC.setContextMap(publishInfo.getContext());
logger.trace("Entering publishFile with {}", publishInfo);
try {
DmaapProducerHttpClient dmaapProducerHttpClient = resolveClient(publishInfo.getChangeIdentifier());
HttpPut put = new HttpPut();
prepareHead(publishInfo, put);
prepareBody(publishInfo, put);
dmaapProducerHttpClient.addUserCredentialsToHead(put);
HttpResponse response =
dmaapProducerHttpClient.getDmaapProducerResponseWithRedirect(put, publishInfo.getContext());
logger.trace("{}", response);
return Mono.just(HttpStatus.valueOf(response.getStatusLine().getStatusCode()));
} catch (Exception e) {
counters.incNoOfFailedPublishAttempts();
logger.warn("Publishing file {} to DR unsuccessful.", publishInfo.getName(), e);
return Mono.error(e);
}
}
private void prepareHead(FilePublishInformation publishInfo, HttpPut put) throws DatafileTaskException {
put.addHeader(HttpHeaders.CONTENT_TYPE, CONTENT_TYPE);
JsonElement metaData = JsonParser.parseString(JsonSerializer.createJsonBodyForDataRouter(publishInfo));
put.addHeader(X_DMAAP_DR_META, metaData.toString());
URI uri = new DefaultUriBuilderFactory(
datafileAppConfig.getPublisherConfiguration(publishInfo.getChangeIdentifier()).publishUrl()) //
.builder() //
.pathSegment(publishInfo.getName()) //
.build();
put.setURI(uri);
MappedDiagnosticContext.appendTraceInfo(put);
}
private void prepareBody(FilePublishInformation publishInfo, HttpPut put) {
File file = createInputFile(publishInfo.getInternalLocation());
FileEntity entity = new FileEntity(file, ContentType.DEFAULT_BINARY);
put.setEntity(entity);
}
private Mono<FilePublishInformation> handleHttpResponse(HttpStatus response, FilePublishInformation publishInfo) {
MDC.setContextMap(publishInfo.getContext());
if (HttpUtils.isSuccessfulResponseCode(response.value())) {
counters.incTotalPublishedFiles();
logger.trace("Publishing file {} to DR successful!", publishInfo.getName());
return Mono.just(publishInfo);
} else {
counters.incNoOfFailedPublishAttempts();
logger.warn("Publishing file {} to DR unsuccessful. Response code: {}", publishInfo.getName(), response);
return Mono.error(new Exception(
"Publishing file " + publishInfo.getName() + " to DR unsuccessful. Response code: " + response));
}
}
File createInputFile(Path filePath) {
FileSystemResource realResource = new FileSystemResource(filePath);
return realResource.getFile();
}
PublisherConfiguration resolveConfiguration(String changeIdentifer) throws DatafileTaskException {
return datafileAppConfig.getPublisherConfiguration(changeIdentifer);
}
DmaapProducerHttpClient resolveClient(String changeIdentifier) throws DatafileTaskException {
PublisherConfiguration publisherConfiguration = resolveConfiguration(changeIdentifier);
return new DmaapProducerHttpClient(publisherConfiguration);
}
}
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