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/*******************************************************************************
* Copyright 2016-2017 ZTE, Inc. and others.
*
* 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.
******************************************************************************/
package org.onap.msb.apiroute.wrapper.queue;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.http.HttpEntity;
import org.onap.msb.apiroute.SyncDataManager;
import org.onap.msb.apiroute.wrapper.MicroServiceWrapper;
import org.onap.msb.apiroute.wrapper.util.CommonUtil;
import org.onap.msb.apiroute.wrapper.util.ServiceFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
public class ServiceListConsumer implements Runnable {
private static final Logger LOGGER = LoggerFactory.getLogger(ServiceListConsumer.class);
private boolean isRunning = true;
private int index;
public ServiceListConsumer() {
this.index = 0;
}
public void run() {
LOGGER.info("run ServiceList Consumer Thread [" + index + "]");
while (isRunning) {
try {
// 取最新一条记录
ServiceData<HttpEntity> serviceData = QueueManager.getInstance().takeFromServiceListQueue(index);
LOGGER.debug("ServiceList Consumer Thread [" + index
+ "] take out serviceData from Queue successfully");
HttpEntity newValues = serviceData.getData();
Set<String> newServiceNameList = filterServiceList(newValues);
if (ServiceListCache.getLatestServiceNamelist().isEmpty()) {
boolean initSuccess = initServiceList(newServiceNameList);
if (initSuccess) {
ServiceListCache.setLatestServiceNamelist(newServiceNameList);
}
} else {
updateServiceList(newServiceNameList);
ServiceListCache.setLatestServiceNamelist(newServiceNameList);
}
} catch (Exception e) {
LOGGER.error("ServiceListConsumer throw Exception: ", e);
}
}
}
private void startWatchService(String serviceName) {
// start to Watch service nodes
SyncDataManager.startWatchService(serviceName);
}
private void updateServiceList(Set<String> newServiceNameList) {
Set<String> registerServiceNameList =
CommonUtil.getDiffrent(ServiceListCache.getLatestServiceNamelist(), newServiceNameList);
if (!registerServiceNameList.isEmpty()) {
LOGGER.info("***need to start Watch Service num from consul :" + registerServiceNameList.size());
for (String serviceName : registerServiceNameList) {
startWatchService(serviceName);
}
}
}
private boolean initServiceList(Set<String> newServiceNameList) {
LOGGER.info("***start to initialize service List when System startup ***");
Set<String> dbServiceNameList = MicroServiceWrapper.getInstance().getAllMicroServiceKey();
if (dbServiceNameList == null) {
LOGGER.error("init ServiceList from redis fail ");
return false;
}
// 对比删除redis脏数据
Set<String> delServiceNameList = CommonUtil.getDiffrent(newServiceNameList, dbServiceNameList);
LOGGER.info("***need to delete Service num from redis :" + delServiceNameList.size());
for (String serviceName : delServiceNameList) {
try {
MicroServiceWrapper.getInstance().deleteMicroService4AllVersion(serviceName);
LOGGER.info("delete MicroService success from initialize:[serviceName]" + serviceName);
} catch (Exception e) {
LOGGER.error("initialize serviceList :Delete MicroServiceInfo serviceName:" + serviceName + " FAIL : ",
e);
}
}
// 启动同步开启监听全部服务列表
LOGGER.info("***need to start Watch Service num from initialize :" + newServiceNameList.size());
for (String serviceName : newServiceNameList) {
startWatchService(serviceName);
}
return true;
}
private Set<String> filterServiceList(final HttpEntity serviceList) {
if (serviceList == null || serviceList.getContentLength() == 0) {
return new HashSet<>();
}
final Set<String> builder = new HashSet<>();
JsonFactory f = new JsonFactory();
JsonParser jp = null;
List<String> tagList = null;
int inputServiceNum = 0;
try {
jp = f.createParser(serviceList.getContent());
jp.nextToken();
while (jp.nextToken() != JsonToken.END_OBJECT) {
String serviceName = jp.getCurrentName();
inputServiceNum++;
jp.nextToken();
tagList = new ArrayList<>();
while (jp.nextToken() != JsonToken.END_ARRAY) {
tagList.add(jp.getText());
}
if (serviceName != null && !"consul".equals(serviceName)&&ServiceFilter.getInstance().isFilterService(tagList)) {
builder.add(serviceName);
}
}
} catch (IOException e) {
LOGGER.warn("parse service list error", e);
return new HashSet<>();
} finally {
try {
jp.close();
} catch (IOException e) {
LOGGER.warn("parse service list error", e);
}
}
int latestServiceNum = ServiceListCache.getLatestServiceNamelist().size();
LOGGER.info("[consul] all service num:" + inputServiceNum + ", filter service num: new——" + builder.size()
+ " old——" + latestServiceNum);
return builder;
}
}
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