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
  26 import java.io.File;
  27 import java.net.MalformedURLException;
  28 import java.net.URI;
  29 import java.nio.file.Path;
  30 import java.time.Duration;
  31
  32 import org.apache.http.HttpResponse;
  33 import org.apache.http.client.methods.HttpPut;
  34 import org.apache.http.entity.ContentType;
  35 import org.apache.http.entity.FileEntity;
  36 import org.onap.dcaegen2.collectors.datafile.configuration.AppConfig;
  37 import org.onap.dcaegen2.collectors.datafile.configuration.PublisherConfiguration;
  38 import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
  39 import org.onap.dcaegen2.collectors.datafile.model.Counters;
  40 import org.onap.dcaegen2.collectors.datafile.model.FilePublishInformation;
  41 import org.onap.dcaegen2.collectors.datafile.model.JsonSerializer;
  42 import org.onap.dcaegen2.collectors.datafile.model.logging.MappedDiagnosticContext;
  43 import org.onap.dcaegen2.collectors.datafile.service.HttpUtils;
  44 import org.onap.dcaegen2.collectors.datafile.service.producer.DmaapProducerHttpClient;
  45 import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
  46 import org.slf4j.Logger;
  47 import org.slf4j.LoggerFactory;
  48 import org.slf4j.MDC;
  49 import org.springframework.core.io.FileSystemResource;
  50 import org.springframework.http.HttpHeaders;
  51 import org.springframework.http.HttpStatus;
  52 import org.springframework.web.util.DefaultUriBuilderFactory;
  53 import reactor.core.publisher.Mono;
  54
  55 /**
  56  * Publishes a file to the DataRouter.
  57  *
  58  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 4/13/18
  59  * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
  60  */
  61 public class DataRouterPublisher {
  62     private static final String X_DMAAP_DR_META = "X-DMAAP-DR-META";
  63     private static final String CONTENT_TYPE = "application/octet-stream";
  64
  65     private static final Logger logger = LoggerFactory.getLogger(DataRouterPublisher.class);
  66     private final AppConfig datafileAppConfig;
  67     private final Counters counters;
  68
  69     public DataRouterPublisher(AppConfig datafileAppConfig, Counters counters) {
  70         this.datafileAppConfig = datafileAppConfig;
  71         this.counters = counters;
  72     }
  73
  74     /**
  75      * Publish one file.
  76      *
  77      * @param publishInfo information about the file to publish
  78      * @param numRetries the maximal number of retries if the publishing fails
  79      * @param firstBackoff the time to delay the first retry
  80      * @return the (same) filePublishInformation
  81      */
  82     public Mono<FilePublishInformation> publishFile(FilePublishInformation publishInfo, long numRetries,
  83         Duration firstBackoff) {
  84         MDC.setContextMap(publishInfo.getContext());
  85         return Mono.just(publishInfo) //
  86             .cache() //
  87             .flatMap(this::publishFile) //
  88             .flatMap(httpStatus -> handleHttpResponse(httpStatus, publishInfo)) //
  89             .retryBackoff(numRetries, firstBackoff);
  90     }
  91
  92     private Mono<HttpStatus> publishFile(FilePublishInformation publishInfo) {
  93         MDC.setContextMap(publishInfo.getContext());
  94         logger.trace("Entering publishFile with {}", publishInfo);
  95         try {
  96             DmaapProducerHttpClient dmaapProducerHttpClient = resolveClient(publishInfo.getChangeIdentifier());
  97             HttpPut put = new HttpPut();
  98             prepareHead(publishInfo, put);
  99             prepareBody(publishInfo, put);
 100             dmaapProducerHttpClient.addUserCredentialsToHead(put);
 101
 102             HttpResponse response =
 103                 dmaapProducerHttpClient.getDmaapProducerResponseWithRedirect(put, publishInfo.getContext());
 104             logger.trace("{}", response);
 105             return Mono.just(HttpStatus.valueOf(response.getStatusLine().getStatusCode()));
 106         } catch (Exception e) {
 107             counters.incNoOfFailedPublishAttempts();
 108             logger.warn("Publishing file {} to DR unsuccessful.", publishInfo.getName(), e);
 109             return Mono.error(e);
 110         }
 111     }
 112
 113     private void prepareHead(FilePublishInformation publishInfo, HttpPut put) throws DatafileTaskException {
 114
 115         put.addHeader(HttpHeaders.CONTENT_TYPE, CONTENT_TYPE);
 116         JsonElement metaData = new JsonParser().parse(JsonSerializer.createJsonBodyForDataRouter(publishInfo));
 117         put.addHeader(X_DMAAP_DR_META, metaData.toString());
 118         URI uri = new DefaultUriBuilderFactory(
 119             datafileAppConfig.getPublisherConfiguration(publishInfo.getChangeIdentifier()).publishUrl()) //
 120                 .builder() //
 121                 .pathSegment(publishInfo.getName()) //
 122                 .build();
 123         put.setURI(uri);
 124
 125         MappedDiagnosticContext.appendTraceInfo(put);
 126     }
 127
 128     private void prepareBody(FilePublishInformation publishInfo, HttpPut put) {
 129         File file = createInputFile(publishInfo.getInternalLocation());
 130         FileEntity entity = new FileEntity(file, ContentType.DEFAULT_BINARY);
 131         put.setEntity(entity);
 132     }
 133
 134     private Mono<FilePublishInformation> handleHttpResponse(HttpStatus response, FilePublishInformation publishInfo) {
 135         MDC.setContextMap(publishInfo.getContext());
 136         if (HttpUtils.isSuccessfulResponseCode(response.value())) {
 137             counters.incTotalPublishedFiles();
 138             logger.trace("Publishing file {} to DR successful!", publishInfo.getName());
 139             return Mono.just(publishInfo);
 140         } else {
 141             counters.incNoOfFailedPublishAttempts();
 142             logger.warn("Publishing file {} to DR unsuccessful. Response code: {}", publishInfo.getName(), response);
 143             return Mono.error(new Exception(
 144                 "Publishing file " + publishInfo.getName() + " to DR unsuccessful. Response code: " + response));
 145         }
 146     }
 147
 148     File createInputFile(Path filePath) {
 149         FileSystemResource realResource = new FileSystemResource(filePath);
 150         return realResource.getFile();
 151     }
 152
 153     PublisherConfiguration resolveConfiguration(String changeIdentifer) throws DatafileTaskException {
 154         return datafileAppConfig.getPublisherConfiguration(changeIdentifer);
 155     }
 156
 157     DmaapProducerHttpClient resolveClient(String changeIdentifier) throws DatafileTaskException {
 158         try {
 159             DmaapPublisherConfiguration cfg = resolveConfiguration(changeIdentifier).toDmaap();
 160             return new DmaapProducerHttpClient(cfg);
 161         } catch (MalformedURLException e) {
 162             throw new DatafileTaskException("Cannot resolve producer client", e);
 163         }
 164
 165     }
 166 }