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

   1 /*
   2 * ============LICENSE_START=======================================================
   3 * ONAP : DataLake
   4 * ================================================================================
   5 * Copyright 2019 China Mobile
   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 package org.onap.datalake.feeder.controller;
  21
  22 import java.io.IOException;
  23 import java.util.ArrayList;
  24 import java.util.List;
  25 import java.util.Set;
  26
  27 import javax.servlet.http.HttpServletResponse;
  28
  29 import org.onap.datalake.feeder.domain.Db;
  30 import org.onap.datalake.feeder.domain.Topic;
  31 import org.onap.datalake.feeder.controller.domain.PostReturnBody;
  32 import org.onap.datalake.feeder.dto.TopicConfig;
  33 import org.onap.datalake.feeder.repository.DbRepository;
  34 import org.onap.datalake.feeder.repository.TopicRepository;
  35 import org.onap.datalake.feeder.service.DbService;
  36 import org.onap.datalake.feeder.service.DmaapService;
  37 import org.onap.datalake.feeder.service.TopicService;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40 import org.springframework.beans.factory.annotation.Autowired;
  41 import org.springframework.http.MediaType;
  42 import org.springframework.validation.BindingResult;
  43 import org.springframework.web.bind.annotation.DeleteMapping;
  44 import org.springframework.web.bind.annotation.GetMapping;
  45 import org.springframework.web.bind.annotation.PathVariable;
  46 import org.springframework.web.bind.annotation.PostMapping;
  47 import org.springframework.web.bind.annotation.PutMapping;
  48 import org.springframework.web.bind.annotation.RequestBody;
  49 import org.springframework.web.bind.annotation.RequestMapping;
  50 import org.springframework.web.bind.annotation.ResponseBody;
  51 import org.springframework.web.bind.annotation.RestController;
  52 import org.springframework.web.bind.annotation.CrossOrigin;
  53
  54 import io.swagger.annotations.ApiOperation;
  55
  56 /**
  57  * This controller manages topic settings.
  58  *
  59  * Topic "_DL_DEFAULT_" acts as the default.
  60  * If a topic is not present in database, "_DL_DEFAULT_" is used for it.
  61  * If a topic is present in database, itself should be complete, and no setting from "_DL_DEFAULT_" is used.
  62  * Topic "_DL_DEFAULT_" is populated at setup by a DB script.
  63  *
  64  * @author Guobiao Mo
  65  * @contributor Kate Hsuan @ QCT
  66  */
  67
  68 @CrossOrigin(origins = "*")
  69 @RestController
  70 @RequestMapping(value = "/topics", produces = { MediaType.APPLICATION_JSON_VALUE })//, consumes= {MediaType.APPLICATION_JSON_UTF8_VALUE})
  71 public class TopicController {
  72
  73         private final Logger log = LoggerFactory.getLogger(this.getClass());
  74
  75         @Autowired
  76         private DmaapService dmaapService;
  77
  78         @Autowired
  79         private TopicRepository topicRepository;
  80
  81         @Autowired
  82         private TopicService topicService;
  83
  84         @GetMapping("/dmaap")
  85         @ResponseBody
  86         @ApiOperation(value = "List all topic names in DMaaP.")
  87         public List<String> listDmaapTopics() {
  88                 return dmaapService.getTopics();
  89         }
  90
  91         @GetMapping("")
  92         @ResponseBody
  93         @ApiOperation(value="List all topic names in database")
  94         public List<String> list() {
  95                 Iterable<Topic> ret = topicRepository.findAll();
  96                 List<String> retString = new ArrayList<>();
  97                 for(Topic item : ret)
  98                 {
  99                         if(!topicService.istDefaultTopic(item))
 100                                 retString.add(item.getName());
 101                 }
 102                 return retString;
 103         }
 104
 105         @PostMapping("")
 106         @ResponseBody
 107         @ApiOperation(value="Create a new topic.")
 108         public PostReturnBody<TopicConfig> createTopic(@RequestBody TopicConfig topicConfig, BindingResult result, HttpServletResponse response) throws IOException {
 109
 110                 if (result.hasErrors()) {
 111                         sendError(response, 400, "Error parsing Topic: "+result.toString());
 112                         return null;
 113                 }
 114                 Topic oldTopic = topicService.getTopic(topicConfig.getName());
 115                 if (oldTopic != null) {
 116                         sendError(response, 400, "Topic already exists "+topicConfig.getName());
 117                         return null;
 118                 } else {
 119                         Topic wTopic = topicService.fillTopicConfiguration(topicConfig);
 120                         if(wTopic.getTtl() == 0)
 121                                 wTopic.setTtl(3650);
 122                         topicRepository.save(wTopic);
 123                         return mkPostReturnBody(200, wTopic);
 124                 }
 125         }
 126
 127         @GetMapping("/{topicName}")
 128         @ResponseBody
 129         @ApiOperation(value="Get a topic's settings.")
 130         public TopicConfig getTopic(@PathVariable("topicName") String topicName, HttpServletResponse response) throws IOException {
 131                 Topic topic = topicService.getTopic(topicName);
 132                 if(topic == null) {
 133                         sendError(response, 404, "Topic not found");
 134                         return null;
 135                 }
 136                 return topic.getTopicConfig();
 137         }
 138
 139         //This is not a partial update: old topic is wiped out, and new topic is created based on the input json.
 140         //One exception is that old DBs are kept
 141         @PutMapping("/{topicName}")
 142         @ResponseBody
 143         @ApiOperation(value="Update a topic.")
 144         public PostReturnBody<TopicConfig> updateTopic(@PathVariable("topicName") String topicName, @RequestBody TopicConfig topicConfig, BindingResult result, HttpServletResponse response) throws IOException {
 145
 146                 if (result.hasErrors()) {
 147                         sendError(response, 400, "Error parsing Topic: "+result.toString());
 148                         return null;
 149                 }
 150
 151                 if(!topicName.equals(topicConfig.getName()))
 152                 {
 153                         sendError(response, 400, "Topic name mismatch" + topicName + topicConfig.getName());
 154                         return null;
 155                 }
 156
 157                 Topic oldTopic = topicService.getTopic(topicConfig.getName());
 158                 if (oldTopic == null) {
 159                         sendError(response, 404, "Topic not found "+topicConfig.getName());
 160                         return null;
 161                 } else {
 162                         topicService.fillTopicConfiguration(topicConfig, oldTopic);
 163                         topicRepository.save(oldTopic);
 164                         return mkPostReturnBody(200, oldTopic);
 165                 }
 166         }
 167
 168         @DeleteMapping("/{topicName}")
 169         @ResponseBody
 170         @ApiOperation(value="Update a topic.")
 171         public void deleteTopic(@PathVariable("topicName") String topicName, HttpServletResponse response) throws IOException
 172         {
 173                 Topic oldTopic = topicService.getTopic(topicName);
 174                 if (oldTopic == null) {
 175                         sendError(response, 404, "Topic not found "+topicName);
 176                 } else {
 177                         Set<Db> dbRelation = oldTopic.getDbs();
 178                         dbRelation.clear();
 179                         topicRepository.save(oldTopic);
 180                         topicRepository.delete(oldTopic);
 181                         response.setStatus(204);
 182                 }
 183         }
 184
 185         private PostReturnBody<TopicConfig> mkPostReturnBody(int statusCode, Topic topic)
 186         {
 187                 PostReturnBody<TopicConfig> retBody = new PostReturnBody<>();
 188         retBody.setStatusCode(statusCode);
 189         retBody.setReturnBody(topic.getTopicConfig());
 190
 191         return retBody;
 192         }
 193
 194         private void sendError(HttpServletResponse response, int sc, String msg) throws IOException {
 195                 log.info(msg);
 196                 response.sendError(sc, msg);
 197         }
 198 }