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/**
* Copyright 2017-2021 ZTE Corporation.
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.
*/
package org.onap.holmes.rulemgt.dcae;
import lombok.extern.slf4j.Slf4j;
import org.onap.holmes.common.dcae.DcaeConfigurationQuery;
import org.onap.holmes.common.dcae.entity.DcaeConfigurations;
import org.onap.holmes.common.dcae.entity.Rule;
import org.onap.holmes.common.exception.CorrelationException;
import org.onap.holmes.common.utils.JerseyClient;
import org.onap.holmes.common.utils.Md5Util;
import org.onap.holmes.rulemgt.bean.request.RuleCreateRequest;
import org.onap.holmes.rulemgt.bean.response.RuleQueryListResponse;
import org.onap.holmes.rulemgt.bean.response.RuleResult4API;
import javax.ws.rs.client.Entity;
import javax.ws.rs.core.MediaType;
import java.util.List;
@Slf4j
public class DcaeConfigurationPolling implements Runnable {
public static final long POLLING_PERIOD = 30 * 1000L;
private String hostname;
private String url = "https://127.0.0.1:9101/api/holmes-rule-mgmt/v1/rule";
public DcaeConfigurationPolling(String hostname) {
this.hostname = hostname;
}
private String prevConfigMd5 = Md5Util.md5(null);
private boolean prevResult = false;
@Override
public void run() {
DcaeConfigurations dcaeConfigurations = null;
try {
dcaeConfigurations = DcaeConfigurationQuery.getDcaeConfigurations(hostname);
String md5 = Md5Util.md5(dcaeConfigurations);
if (prevResult && prevConfigMd5.equals(md5)) {
log.info("Operation aborted due to identical configurations.");
return;
}
prevConfigMd5 = md5;
prevResult = false;
} catch (CorrelationException e) {
log.error("Failed to fetch DCAE configurations. " + e.getMessage(), e);
} catch (Exception e) {
log.info("Failed to generate the MD5 information for new configurations.", e);
}
RuleQueryListResponse ruleQueryListResponse = null;
if (dcaeConfigurations != null) {
try {
ruleQueryListResponse = getAllCorrelationRules();
} catch (Exception e) {
log.error("Failed to get deployed rules from the rule management module: " + e.getMessage(), e);
}
}
if (ruleQueryListResponse != null) {
List<RuleResult4API> ruleResult4APIs = ruleQueryListResponse.getCorrelationRules();
deleteAllCorrelationRules(ruleResult4APIs);
try {
prevResult = addAllCorrelationRules(dcaeConfigurations);
} catch (CorrelationException e) {
log.error("Failed to add rules. " + e.getMessage(), e);
prevResult = false;
}
}
}
private RuleQueryListResponse getAllCorrelationRules() {
return JerseyClient.newInstance().get(url, RuleQueryListResponse.class);
}
private boolean addAllCorrelationRules(DcaeConfigurations dcaeConfigurations) throws CorrelationException {
boolean suc = false;
for (Rule rule : dcaeConfigurations.getDefaultRules()) {
RuleCreateRequest ruleCreateRequest = getRuleCreateRequest(rule);
suc = JerseyClient.newInstance().header("Accept", MediaType.APPLICATION_JSON)
.put(url, Entity.json(ruleCreateRequest)) != null;
if (!suc) {
break;
}
}
return suc;
}
private void deleteAllCorrelationRules(List<RuleResult4API> ruleResult4APIs) {
ruleResult4APIs.forEach(correlationRule -> {
if (null == JerseyClient.newInstance().delete(url + "/" + correlationRule.getRuleId())) {
log.warn("Failed to delete rule, the rule id is: {}", correlationRule.getRuleId());
}
});
}
private RuleCreateRequest getRuleCreateRequest(Rule rule) {
RuleCreateRequest ruleCreateRequest = new RuleCreateRequest();
ruleCreateRequest.setLoopControlName(rule.getLoopControlName());
ruleCreateRequest.setRuleName(rule.getName());
ruleCreateRequest.setContent(rule.getContents());
ruleCreateRequest.setDescription("");
ruleCreateRequest.setEnabled(1);
return ruleCreateRequest;
}
}
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