Add the MD5 Check to Avoid Duplicated Deployment
[holmes/rule-management.git] / 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.DcaeConfigurationQuery;
28 import org.onap.holmes.common.dcae.entity.DcaeConfigurations;
29 import org.onap.holmes.common.dcae.entity.Rule;
30 import org.onap.holmes.common.dcae.utils.DcaeConfigurationParser;
31 import org.onap.holmes.common.exception.CorrelationException;
32 import org.onap.holmes.common.utils.Md5Util;
33 import org.onap.holmes.rulemgt.bean.request.RuleCreateRequest;
34 import org.onap.holmes.rulemgt.bean.response.RuleQueryListResponse;
35 import org.onap.holmes.rulemgt.bean.response.RuleResult4API;
36
37 @Slf4j
38 public class DcaeConfigurationPolling implements Runnable {
39
40     public static long POLLING_PERIOD = 30 * 1000L;
41
42     private String hostname;
43
44     private String url = "http://127.0.0.1:9101/api/holmes-rule-mgmt/v1/rule";
45
46     public DcaeConfigurationPolling(String hostname) {
47         this.hostname = hostname;
48     }
49
50     private String prevConfigMd5 = Md5Util.md5(null);
51
52     @Override
53     public void run() {
54         DcaeConfigurations dcaeConfigurations = null;
55         try {
56             dcaeConfigurations = DcaeConfigurationQuery.getDcaeConfigurations(hostname);
57             String md5 = Md5Util.md5(dcaeConfigurations);
58             if (prevConfigMd5.equals(md5)){
59                 log.info("Operation aborted due to identical Configurations.");
60                 return;
61             }
62             prevConfigMd5 = md5;
63         } catch (CorrelationException e) {
64             log.error("Failed to fetch DCAE configurations. " + e.getMessage(), e);
65         } catch (JsonProcessingException e) {
66             log.info("Failed to generate the MD5 information for new configurations.", e);
67         }
68         if (dcaeConfigurations != null) {
69             RuleQueryListResponse ruleQueryListResponse = getAllCorrelationRules();
70             List<RuleResult4API> ruleResult4APIs = ruleQueryListResponse.getCorrelationRules();
71             deleteAllCorrelationRules(ruleResult4APIs);
72             try {
73                 addAllCorrelationRules(dcaeConfigurations);
74             } catch (CorrelationException e) {
75                 log.error("Failed to add rules. " + e.getMessage(), e);
76             }
77         }
78     }
79
80     private RuleQueryListResponse getAllCorrelationRules() {
81         Client client = ClientBuilder.newClient(new ClientConfig());
82         WebTarget webTarget = client.target(url);
83         return webTarget.request("application/json").get()
84                 .readEntity(RuleQueryListResponse.class);
85     }
86
87     private void addAllCorrelationRules(DcaeConfigurations dcaeConfigurations) throws CorrelationException {
88         for (Rule rule : dcaeConfigurations.getDefaultRules()) {
89             RuleCreateRequest ruleCreateRequest = getRuleCreateRequest(rule);
90             Client client = ClientBuilder.newClient(new ClientConfig());
91             ObjectMapper mapper = new ObjectMapper();
92             String content = null;
93             try {
94                 content = mapper.writeValueAsString(ruleCreateRequest);
95             } catch (JsonProcessingException e) {
96                 throw new CorrelationException("Failed to convert the message object to a json string.", e);
97             }
98             WebTarget webTarget = client.target(url);
99             webTarget.request(MediaType.APPLICATION_JSON)
100                     .put(Entity.entity(content, MediaType.APPLICATION_JSON));
101         }
102     }
103
104     private void deleteAllCorrelationRules(List<RuleResult4API> ruleResult4APIs){
105         ruleResult4APIs.forEach(correlationRule ->{
106             Client client = ClientBuilder.newClient(new ClientConfig());
107             WebTarget webTarget = client.target(url + "/" + correlationRule.getRuleId());
108             webTarget.request(MediaType.APPLICATION_JSON).delete();
109         });
110     }
111
112     private RuleCreateRequest getRuleCreateRequest(Rule rule) {
113         RuleCreateRequest ruleCreateRequest = new RuleCreateRequest();
114         ruleCreateRequest.setLoopControlName(rule.getLoopControlName());
115         ruleCreateRequest.setRuleName(rule.getName());
116         ruleCreateRequest.setContent(rule.getContents());
117         ruleCreateRequest.setDescription("");
118         ruleCreateRequest.setEnabled(1);
119         return ruleCreateRequest;
120     }
121 }