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/*
* ============LICENSE_START=======================================================
* ONAP : DataLake
* ================================================================================
* Copyright 2019 China Mobile
*=================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.datalake.feeder.controller;
import java.io.IOException;
import java.util.List;
import java.util.Optional;
import org.onap.datalake.feeder.domain.Topic;
import org.onap.datalake.feeder.repository.TopicRepository;
import org.onap.datalake.feeder.service.DmaapService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
/**
* This controller manages all the topic settings. Topic "_DL_DEFAULT_" acts as
* the default. For example, if a topic's enabled=null, _DL_DEFAULT_.enabled is
* used for that topic. All the settings are saved in Couchbase. topic
* "_DL_DEFAULT_" is populated at setup by a DB script.
*
* @author Guobiao Mo
*
*/
@RestController
@RequestMapping(value = "/topics", produces = { MediaType.APPLICATION_JSON_VALUE })
public class TopicController {
private final Logger log = LoggerFactory.getLogger(this.getClass());
@Autowired
private DmaapService dmaapService;
@Autowired
private TopicRepository topicRepository;
//list all topics in DMaaP
@GetMapping("/dmaap/")
@ResponseBody
public List<String> listDmaapTopics() throws IOException {
return dmaapService.getTopics();
}
//list all topics
@GetMapping("/")
@ResponseBody
public Iterable<Topic> list() throws IOException {
Iterable<Topic> ret = topicRepository.findAll();
return ret;
}
//Read a topic
@GetMapping("/{name}")
@ResponseBody
public Topic getTopic(@PathVariable("name") String topicName) throws IOException {
//Topic topic = topicRepository.findFirstById(topicName);
Optional<Topic> topic = topicRepository.findById(topicName);
if (topic.isPresent()) {
return topic.get();
} else {
return null;
}
}
//Update Topic
@PutMapping("/")
@ResponseBody
public Topic updateTopic(Topic topic, BindingResult result) throws IOException {
if (result.hasErrors()) {
log.error(result.toString());
return null;//TODO return binding error
}
Topic oldTopic = getTopic(topic.getId());
if (oldTopic == null) {
return null;//TODO return not found error
} else {
topicRepository.save(topic);
return topic;
}
}
//create a new Topic
@PostMapping("/")
@ResponseBody
public Topic createTopic(Topic topic, BindingResult result) throws IOException {
if (result.hasErrors()) {
log.error(result.toString());
return null;
}
Topic oldTopic = getTopic(topic.getId());
if (oldTopic != null) {
return null;//TODO return 'already exists' error
} else {
topicRepository.save(topic);
return topic;
}
}
}
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