rulemgt/src/main/java/org/onap/holmes/rulemgt/dcae/DcaeConfigurationPolling.java

   1 /**
   2  * Copyright 2017 ZTE Corporation.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
   5  * in compliance with the License. You may obtain a copy of the License at
   6  *
   7  * http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software distributed under the License
  10  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  11  * or implied. See the License for the specific language governing permissions and limitations under
  12  * the License.
  13  */
  14 package org.onap.holmes.rulemgt.dcae;
  15
  16 import com.fasterxml.jackson.core.JsonProcessingException;
  17 import com.fasterxml.jackson.databind.ObjectMapper;
  18 import java.util.List;
  19 import javax.ws.rs.client.Client;
  20 import javax.ws.rs.client.ClientBuilder;
  21 import javax.ws.rs.client.Entity;
  22 import javax.ws.rs.client.WebTarget;
  23 import javax.ws.rs.core.MediaType;
  24 import lombok.extern.slf4j.Slf4j;
  25 import org.glassfish.jersey.client.ClientConfig;
  26 import org.onap.holmes.common.config.MicroServiceConfig;
  27 import org.onap.holmes.common.dcae.entity.DcaeConfigurations;
  28 import org.onap.holmes.common.dcae.entity.Rule;
  29 import org.onap.holmes.common.dcae.utils.DcaeConfigurationParser;
  30 import org.onap.holmes.common.exception.CorrelationException;
  31 import org.onap.holmes.rulemgt.bean.request.RuleCreateRequest;
  32 import org.onap.holmes.rulemgt.bean.response.RuleQueryListResponse;
  33 import org.onap.holmes.rulemgt.bean.response.RuleResult4API;
  34
  35 @Slf4j
  36 public class DcaeConfigurationPolling implements Runnable {
  37
  38     public static long POLLING_PERIOD = 10 * 1000L;
  39
  40     private String hostname;
  41
  42     private String url = "http://127.0.0.1/api/holmes-rule-mgmt/v1/rule";
  43
  44     public DcaeConfigurationPolling(String hostname) {
  45         this.hostname = hostname;
  46     }
  47
  48     @Override
  49     public void run() {
  50         DcaeConfigurations dcaeConfigurations = null;
  51         try {
  52             dcaeConfigurations = getDcaeConfigurations();
  53         } catch (CorrelationException e) {
  54             log.error("Failed to fetch DCAE configurations" + e.getMessage());
  55         }
  56         if (dcaeConfigurations != null) {
  57             RuleQueryListResponse ruleQueryListResponse = getAllCorrelationRules();
  58             List<RuleResult4API> ruleResult4APIs = ruleQueryListResponse.getCorrelationRules();
  59             deleteAllCorrelationRules(ruleResult4APIs);
  60             try {
  61                 addAllCorrelationRules(dcaeConfigurations);
  62             } catch (CorrelationException e) {
  63                 log.error("Failed to add rules" + e.getMessage());
  64             }
  65         }
  66     }
  67
  68     private DcaeConfigurations getDcaeConfigurations() throws CorrelationException {
  69         String serviceAddrInfo = MicroServiceConfig.getServiceAddrInfoFromCBS(hostname);
  70         String response = getDcaeResponse(serviceAddrInfo);
  71         DcaeConfigurations dcaeConfigurations = null;
  72         dcaeConfigurations = DcaeConfigurationParser.parse(response);
  73         return dcaeConfigurations;
  74     }
  75
  76     private String getDcaeResponse(String serviceAddrInfo) {
  77         Client client = ClientBuilder.newClient(new ClientConfig());
  78         WebTarget webTarget = client.target(serviceAddrInfo);
  79         return webTarget.request("application/json").get()
  80                 .readEntity(String.class);
  81     }
  82
  83     private RuleQueryListResponse getAllCorrelationRules() {
  84         Client client = ClientBuilder.newClient(new ClientConfig());
  85         WebTarget webTarget = client.target(url);
  86         return webTarget.request("application/json").get()
  87                 .readEntity(RuleQueryListResponse.class);
  88     }
  89
  90     private void addAllCorrelationRules(DcaeConfigurations dcaeConfigurations) throws CorrelationException {
  91         for (Rule rule : dcaeConfigurations.getDefaultRules()) {
  92             RuleCreateRequest ruleCreateRequest = getRuleCreateRequest(rule);
  93             Client client = ClientBuilder.newClient(new ClientConfig());
  94             ObjectMapper mapper = new ObjectMapper();
  95             String content = null;
  96             try {
  97                 content = mapper.writeValueAsString(ruleCreateRequest);
  98             } catch (JsonProcessingException e) {
  99                 throw new CorrelationException("Failed to convert the message object to a json string.", e);
 100             }
 101             WebTarget webTarget = client.target(url);
 102             webTarget.request(MediaType.APPLICATION_JSON)
 103                     .put(Entity.entity(content, MediaType.APPLICATION_JSON));
 104         }
 105     }
 106
 107     private void deleteAllCorrelationRules(List<RuleResult4API> ruleResult4APIs){
 108         ruleResult4APIs.forEach(correlationRule ->{
 109             Client client = ClientBuilder.newClient(new ClientConfig());
 110             WebTarget webTarget = client.target(url + "/" + correlationRule.getRuleId());
 111             webTarget.request(MediaType.APPLICATION_JSON).delete();
 112         });
 113     }
 114
 115     private RuleCreateRequest getRuleCreateRequest(Rule rule) {
 116         RuleCreateRequest ruleCreateRequest = new RuleCreateRequest();
 117         ruleCreateRequest.setLoopControlName(rule.getLoopControlName());
 118         ruleCreateRequest.setRuleName(rule.getName());
 119         ruleCreateRequest.setContent(rule.getContents());
 120         ruleCreateRequest.setDescription("");
 121         ruleCreateRequest.setEnabled(1);
 122         return ruleCreateRequest;
 123     }
 124 }