gerrit.onap Code Review - dcaegen2/services/prh.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * PNF-REGISTRATION-HANDLER
   4  * ================================================================================
   5  * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.dcaegen2.services.service.producer;
  22
  23 import org.apache.http.client.methods.HttpPost;
  24 import org.apache.http.client.methods.HttpRequestBase;
  25 import org.apache.http.client.utils.URIBuilder;
  26 import org.apache.http.entity.StringEntity;
  27 import org.apache.http.impl.client.CloseableHttpClient;
  28 import org.onap.dcaegen2.services.config.DmaapPublisherConfiguration;
  29 import org.onap.dcaegen2.services.service.CommonMethods;
  30 import org.onap.dcaegen2.services.service.DmaapHttpClientImpl;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 import java.io.IOException;
  35 import java.io.UnsupportedEncodingException;
  36 import java.net.URI;
  37 import java.net.URISyntaxException;
  38 import java.util.Optional;
  39
  40 public class ExtendedDmaapProducerHttpClientImpl {
  41
  42     private static Logger logger = LoggerFactory.getLogger(ExtendedDmaapProducerHttpClientImpl.class);
  43
  44     private final CloseableHttpClient closeableHttpClient;
  45     private final String dmaapHostName;
  46     private final String dmaapProtocol;
  47     private final Integer dmaapPortNumber;
  48     private final String dmaapTopicName;
  49     private final String dmaapContentType;
  50
  51
  52     ExtendedDmaapProducerHttpClientImpl(DmaapPublisherConfiguration configuration) {
  53         this.closeableHttpClient = new DmaapHttpClientImpl(configuration).getHttpClient();
  54         this.dmaapHostName = configuration.dmaapHostName();
  55         this.dmaapProtocol = configuration.dmaapProtocol();
  56         this.dmaapPortNumber = configuration.dmaapPortNumber();
  57         this.dmaapTopicName = configuration.dmaapTopicName();
  58         this.dmaapContentType = configuration.dmaapContentType();
  59     }
  60
  61     public Optional<String> getHttpProducerResponse(DmaapPublisherRequestDetails requestDetails) {
  62
  63         Optional<String> extendedDetails = Optional.empty();
  64         Optional<HttpRequestBase> request = createRequest(requestDetails);
  65
  66         try {
  67             extendedDetails = closeableHttpClient.execute(request.get(), CommonMethods.dmaapResponseHandler());
  68         } catch (IOException | NullPointerException e) {
  69             logger.error("Exception while executing HTTP request: {}", e);
  70         }
  71
  72         if (extendedDetails.isPresent()) {
  73             return extendedDetails;
  74         } else {
  75             return Optional.empty();
  76         }
  77     }
  78
  79     private Boolean isExtendedURINotNull(URI extendedURI) {
  80         return extendedURI != null;
  81     }
  82
  83     private Optional<StringEntity> createStringEntity(Optional<String> jsonBody) {
  84         return Optional.of(parseJson(jsonBody).get());
  85     }
  86
  87     private Optional<StringEntity> parseJson(Optional<String> jsonBody) {
  88         Optional<StringEntity> stringEntity = Optional.empty();
  89
  90         try {
  91             stringEntity = Optional.of(new StringEntity(jsonBody.get()));
  92         } catch (UnsupportedEncodingException e) {
  93             logger.error("Exception while parsing JSON: {}", e);
  94         }
  95
  96         return stringEntity;
  97     }
  98
  99     private Optional<HttpRequestBase> createRequest (DmaapPublisherRequestDetails requestDetails) {
 100
 101         Optional<HttpRequestBase> request = Optional.empty();
 102         final URI extendedURI = createDmaapPublisherExtendedURI(requestDetails);
 103
 104         if ("application/json".equals(dmaapContentType)) {
 105             request = Optional.of(createRequest(extendedURI, requestDetails));
 106             request.get().addHeader("Content-type", dmaapContentType);
 107         }
 108
 109         return request;
 110     }
 111
 112     private URI createDmaapPublisherExtendedURI(DmaapPublisherRequestDetails requestDetails) {
 113         URI extendedURI = null;
 114
 115         final URIBuilder uriBuilder = new URIBuilder()
 116                 .setScheme(dmaapProtocol)
 117                 .setHost(dmaapHostName)
 118                 .setPort(dmaapPortNumber)
 119                 .setPath(requestDetails.dmaapAPIPath() + "/" + dmaapTopicName);
 120
 121         try {
 122             logger.info("Building extended URI");
 123             extendedURI = uriBuilder.build();
 124         } catch (URISyntaxException e) {
 125             logger.error("Exception while building extended URI: {}", e);
 126         }
 127
 128         return extendedURI;
 129     }
 130
 131     private HttpRequestBase createRequest(URI extendedURI, DmaapPublisherRequestDetails requestDetails) {
 132         if (isExtendedURINotNull(extendedURI) && requestDetails.jsonBody().isPresent()) {
 133             return createHttpPost(extendedURI, requestDetails.jsonBody());
 134         } else {
 135             return null;
 136         }
 137     }
 138
 139     private HttpPost createHttpPost(URI extendedURI, Optional<String> jsonBody) {
 140         HttpPost post = new HttpPost(extendedURI);
 141         Optional<StringEntity> stringEntity = createStringEntity(jsonBody);
 142         post.setEntity(stringEntity.get());
 143         return post;
 144     }
 145
 146
 147 }