2 * ============LICENSE_START=======================================================
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
11 * http://www.apache.org/licenses/LICENSE-2.0
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=========================================================
20 package org.onap.datalake.feeder.controller;
22 import java.io.IOException;
23 import java.util.List;
26 import javax.servlet.http.HttpServletResponse;
28 import org.onap.datalake.feeder.domain.Db;
29 import org.onap.datalake.feeder.domain.Topic;
30 import org.onap.datalake.feeder.repository.TopicRepository;
31 import org.onap.datalake.feeder.service.DbService;
32 import org.onap.datalake.feeder.service.DmaapService;
33 import org.onap.datalake.feeder.service.TopicService;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
36 import org.springframework.beans.factory.annotation.Autowired;
37 import org.springframework.http.MediaType;
38 import org.springframework.validation.BindingResult;
39 import org.springframework.web.bind.annotation.DeleteMapping;
40 import org.springframework.web.bind.annotation.GetMapping;
41 import org.springframework.web.bind.annotation.PathVariable;
42 import org.springframework.web.bind.annotation.PostMapping;
43 import org.springframework.web.bind.annotation.PutMapping;
44 import org.springframework.web.bind.annotation.RequestBody;
45 import org.springframework.web.bind.annotation.RequestMapping;
46 import org.springframework.web.bind.annotation.ResponseBody;
47 import org.springframework.web.bind.annotation.RestController;
50 * This controller manages topic settings.
52 * Topic "_DL_DEFAULT_" acts as the default. For example, if a topic's enabled=null, _DL_DEFAULT_.enabled is used for that topic.
53 * All the settings are saved in database.
54 * topic "_DL_DEFAULT_" is populated at setup by a DB script.
61 @RequestMapping(value = "/topics", produces = { MediaType.APPLICATION_JSON_VALUE })//, consumes= {MediaType.APPLICATION_JSON_UTF8_VALUE})
62 public class TopicController {
64 private final Logger log = LoggerFactory.getLogger(this.getClass());
67 private DmaapService dmaapService;
70 private TopicRepository topicRepository;
73 private TopicService topicService;
76 private DbService dbService;
78 //list all topics in DMaaP
79 @GetMapping("/dmaap/")
81 public List<String> listDmaapTopics() throws IOException {
82 return dmaapService.getTopics();
88 public Iterable<Topic> list() throws IOException {
89 Iterable<Topic> ret = topicRepository.findAll();
94 @GetMapping("/{topicname}")
96 public Topic getTopic(@PathVariable("topicname") String topicName) throws IOException {
97 Topic topic = topicService.getTopic(topicName);
101 //Read DBs in a topic
102 @GetMapping("/{topicname}/dbs")
104 public Set<Db> getTopicDbs(@PathVariable("topicname") String topicName) throws IOException {
105 Topic topic = topicService.getTopic(topicName);
106 Set<Db> dbs = topic.getDbs();
111 //This is not a partial update: old topic is wiped out, and new topic is created base on the input json.
112 //One exception is that old DBs are kept
115 public Topic updateTopic(@RequestBody Topic topic, BindingResult result, HttpServletResponse response) throws IOException {
117 if (result.hasErrors()) {
118 sendError(response, 400, "Error parsing Topic: "+result.toString());
122 Topic oldTopic = getTopic(topic.getName());
123 if (oldTopic == null) {
124 sendError(response, 404, "Topic not found "+topic.getName());
127 if(!topic.isDefault()) {
128 Topic defaultTopic = topicService.getDefaultTopic();
129 topic.setDefaultTopic(defaultTopic);
132 topic.setDbs(oldTopic.getDbs());
133 topicRepository.save(topic);
141 public Topic createTopic(@RequestBody Topic topic, BindingResult result, HttpServletResponse response) throws IOException {
143 if (result.hasErrors()) {
144 sendError(response, 400, "Error parsing Topic: "+result.toString());
148 Topic oldTopic = getTopic(topic.getName());
149 if (oldTopic != null) {
150 sendError(response, 400, "Topic already exists "+topic.getName());
153 if(!topic.isDefault()) {
154 Topic defaultTopic = topicService.getDefaultTopic();
155 topic.setDefaultTopic(defaultTopic);
158 topicRepository.save(topic);
163 //delete a db from the topic
164 @DeleteMapping("/{topicname}/db/{dbname}")
166 public Set<Db> deleteDb(@PathVariable("topicname") String topicName, @PathVariable("dbname") String dbName, HttpServletResponse response) throws IOException {
167 Topic topic = topicService.getTopic(topicName);
168 Set<Db> dbs = topic.getDbs();
169 dbs.remove(new Db(dbName));
171 topicRepository.save(topic);
172 return topic.getDbs();
175 //add a db to the topic
176 @PutMapping("/{topicname}/db/{dbname}")
178 public Set<Db> addDb(@PathVariable("topicname") String topicName, @PathVariable("dbname") String dbName, HttpServletResponse response) throws IOException {
179 Topic topic = topicService.getTopic(topicName);
180 Set<Db> dbs = topic.getDbs();
182 Db db = dbService.getDb(dbName);
185 topicRepository.save(topic);
186 return topic.getDbs();
189 private void sendError(HttpServletResponse response, int sc, String msg) throws IOException {
191 response.sendError(sc, msg);