rulemgt/src/main/java/org/onap/holmes/rulemgt/msb/EngineInsQueryTool.java

   1 /**
   2  * Copyright 2017 ZTE Corporation.
   3  * <p>
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  * <p>
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  * <p>
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onap.holmes.rulemgt.msb;
  17
  18
  19 import java.io.IOException;
  20
  21 import lombok.extern.slf4j.Slf4j;
  22 import org.apache.http.HttpResponse;
  23 import org.apache.http.client.methods.HttpGet;
  24 import org.apache.http.impl.client.CloseableHttpClient;
  25 import org.jvnet.hk2.annotations.Service;
  26 import org.onap.holmes.common.api.entity.ServiceEntity;
  27 import org.onap.holmes.common.api.entity.ServiceNode4Query;
  28 import org.onap.holmes.common.config.MicroServiceConfig;
  29 import org.onap.holmes.common.utils.GsonUtil;
  30 import org.onap.holmes.common.utils.HttpsUtils;
  31
  32 import javax.annotation.PostConstruct;
  33 import java.util.ArrayList;
  34 import java.util.HashMap;
  35 import java.util.List;
  36
  37 @Service
  38 @Slf4j
  39 public class EngineInsQueryTool {
  40
  41     private String url;
  42
  43     @PostConstruct
  44     public void init() {
  45         String[] msbAddrInfo = MicroServiceConfig.getMsbIpAndPort();
  46         url = String.format("http://%s:%s/api/microservices/v1/services/holmes-engine-mgmt/version/v1",
  47                 msbAddrInfo[0], msbAddrInfo[1]);
  48     }
  49
  50     public List<String> getInstanceList() throws Exception {
  51                 String response;
  52                 HttpGet httpGet = new HttpGet(url);
  53                 try (CloseableHttpClient httpClient = HttpsUtils.getHttpClient(HttpsUtils.DEFUALT_TIMEOUT)) {
  54                         HttpResponse httpResponse = HttpsUtils.get(httpGet, new HashMap<>(), httpClient);
  55                         response = HttpsUtils.extractResponseEntity(httpResponse);
  56                 } catch (Exception e) {
  57                         throw e;
  58                 } finally {
  59                         httpGet.releaseConnection();
  60
  61                 }
  62                 ServiceEntity service = GsonUtil.jsonToBean(response, ServiceEntity.class);
  63                 List<ServiceNode4Query> nodesList = service.getNodes();
  64                 List<String> ipList = new ArrayList<>();
  65                 for (ServiceNode4Query node : nodesList) {
  66                         ipList.add(node.getIp());
  67                 }
  68                 return ipList;
  69
  70     }
  71
  72 }