gerrit.onap Code Review - dcaegen2/collectors/datafile.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2019 Nordix Foundation.
   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
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  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  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.dcaegen2.collectors.datafile.tasks;
  22
  23 import com.google.gson.JsonElement;
  24 import com.google.gson.JsonParser;
  25 import java.io.File;
  26 import java.net.MalformedURLException;
  27 import java.net.URI;
  28 import java.nio.file.Path;
  29 import java.time.Duration;
  30 import org.apache.http.HttpResponse;
  31 import org.apache.http.client.methods.HttpPut;
  32 import org.apache.http.entity.ContentType;
  33 import org.apache.http.entity.FileEntity;
  34 import org.onap.dcaegen2.collectors.datafile.configuration.AppConfig;
  35 import org.onap.dcaegen2.collectors.datafile.configuration.PublisherConfiguration;
  36 import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
  37 import org.onap.dcaegen2.collectors.datafile.model.Counters;
  38 import org.onap.dcaegen2.collectors.datafile.model.FilePublishInformation;
  39 import org.onap.dcaegen2.collectors.datafile.model.JsonSerializer;
  40 import org.onap.dcaegen2.collectors.datafile.model.logging.MappedDiagnosticContext;
  41 import org.onap.dcaegen2.collectors.datafile.service.HttpUtils;
  42 import org.onap.dcaegen2.collectors.datafile.service.producer.DmaapProducerHttpClient;
  43 import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46 import org.slf4j.MDC;
  47 import org.springframework.core.io.FileSystemResource;
  48 import org.springframework.http.HttpHeaders;
  49 import org.springframework.http.HttpStatus;
  50 import org.springframework.web.util.DefaultUriBuilderFactory;
  51 import reactor.core.publisher.Mono;
  52
  53 /**
  54  * Publishes a file to the DataRouter.
  55  *
  56  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 4/13/18
  57  * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
  58  */
  59 public class DataRouterPublisher {
  60     private static final String X_DMAAP_DR_META = "X-DMAAP-DR-META";
  61     private static final String CONTENT_TYPE = "application/octet-stream";
  62
  63     private static final Logger logger = LoggerFactory.getLogger(DataRouterPublisher.class);
  64     private final AppConfig datafileAppConfig;
  65     private final Counters counters;
  66
  67     public DataRouterPublisher(AppConfig datafileAppConfig, Counters counters) {
  68         this.datafileAppConfig = datafileAppConfig;
  69         this.counters = counters;
  70     }
  71
  72     /**
  73      * Publish one file.
  74      *
  75      * @param publishInfo information about the file to publish
  76      * @param numRetries the maximal number of retries if the publishing fails
  77      * @param firstBackoff the time to delay the first retry
  78      * @return the (same) filePublishInformation
  79      */
  80     public Mono<FilePublishInformation> publishFile(FilePublishInformation publishInfo, long numRetries,
  81         Duration firstBackoff) {
  82         MDC.setContextMap(publishInfo.getContext());
  83         return Mono.just(publishInfo) //
  84             .cache() //
  85             .flatMap(this::publishFile) //
  86             .flatMap(httpStatus -> handleHttpResponse(httpStatus, publishInfo)) //
  87             .retryBackoff(numRetries, firstBackoff);
  88     }
  89
  90     private Mono<HttpStatus> publishFile(FilePublishInformation publishInfo) {
  91         MDC.setContextMap(publishInfo.getContext());
  92         logger.trace("Entering publishFile with {}", publishInfo);
  93         try {
  94             DmaapProducerHttpClient dmaapProducerHttpClient = resolveClient(publishInfo.getChangeIdentifier());
  95             HttpPut put = new HttpPut();
  96             prepareHead(publishInfo, put);
  97             prepareBody(publishInfo, put);
  98             dmaapProducerHttpClient.addUserCredentialsToHead(put);
  99
 100             HttpResponse response =
 101                 dmaapProducerHttpClient.getDmaapProducerResponseWithRedirect(put, publishInfo.getContext());
 102             logger.trace("{}", response);
 103             return Mono.just(HttpStatus.valueOf(response.getStatusLine().getStatusCode()));
 104         } catch (Exception e) {
 105             counters.incNoOfFailedPublishAttempts();
 106             logger.warn("Publishing file {} to DR unsuccessful.", publishInfo.getName(), e);
 107             return Mono.error(e);
 108         }
 109     }
 110
 111     private void prepareHead(FilePublishInformation publishInfo, HttpPut put) throws DatafileTaskException {
 112
 113         put.addHeader(HttpHeaders.CONTENT_TYPE, CONTENT_TYPE);
 114         JsonElement metaData = new JsonParser().parse(JsonSerializer.createJsonBodyForDataRouter(publishInfo));
 115         put.addHeader(X_DMAAP_DR_META, metaData.toString());
 116         URI uri = new DefaultUriBuilderFactory(
 117             datafileAppConfig.getPublisherConfiguration(publishInfo.getChangeIdentifier()).publishUrl()) //
 118                 .builder() //
 119                 .pathSegment(publishInfo.getName()) //
 120                 .build();
 121         put.setURI(uri);
 122
 123         MappedDiagnosticContext.appendTraceInfo(put);
 124     }
 125
 126     private void prepareBody(FilePublishInformation publishInfo, HttpPut put) {
 127         File file = createInputFile(publishInfo.getInternalLocation());
 128         FileEntity entity = new FileEntity(file, ContentType.DEFAULT_BINARY);
 129         put.setEntity(entity);
 130     }
 131
 132     private Mono<FilePublishInformation> handleHttpResponse(HttpStatus response, FilePublishInformation publishInfo) {
 133         MDC.setContextMap(publishInfo.getContext());
 134         if (HttpUtils.isSuccessfulResponseCode(response.value())) {
 135             counters.incTotalPublishedFiles();
 136             logger.trace("Publishing file {} to DR successful!", publishInfo.getName());
 137             return Mono.just(publishInfo);
 138         } else {
 139             counters.incNoOfFailedPublishAttempts();
 140             logger.warn("Publishing file {} to DR unsuccessful. Response code: {}", publishInfo.getName(), response);
 141             return Mono.error(new Exception(
 142                 "Publishing file " + publishInfo.getName() + " to DR unsuccessful. Response code: " + response));
 143         }
 144     }
 145
 146     File createInputFile(Path filePath) {
 147         FileSystemResource realResource = new FileSystemResource(filePath);
 148         return realResource.getFile();
 149     }
 150
 151     PublisherConfiguration resolveConfiguration(String changeIdentifer) throws DatafileTaskException {
 152         return datafileAppConfig.getPublisherConfiguration(changeIdentifer);
 153     }
 154
 155     DmaapProducerHttpClient resolveClient(String changeIdentifier) throws DatafileTaskException {
 156         try {
 157             DmaapPublisherConfiguration cfg = resolveConfiguration(changeIdentifier).toDmaap();
 158             return new DmaapProducerHttpClient(cfg);
 159         } catch (MalformedURLException e) {
 160             throw new DatafileTaskException("Cannot resolve producer client", e);
 161         }
 162
 163     }
 164 }