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/**
* Copyright 2016 2015-2016 ZTE, Inc. and others. All rights reserved.
*
* 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.openo.msb.wrapper;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.openo.msb.api.ServiceAccessInfo;
import org.openo.msb.wrapper.util.JedisUtil;
import org.openo.msb.wrapper.util.RouteUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.Jedis;
public class ServiceAccessWrapper {
private static final Logger LOGGER = LoggerFactory.getLogger(ServiceAccessWrapper.class);
private static ServiceAccessWrapper instance = new ServiceAccessWrapper();
private ServiceAccessWrapper() {}
public static ServiceAccessWrapper getInstance() {
return instance;
}
public ServiceAccessInfo getApiServiceAccessAddr(String serviceName, String version, String host) {
ServiceAccessInfo apiRouteAccessInfo = null;
Jedis jedis = null;
try {
jedis = JedisUtil.borrowJedisInstance();
if (jedis == null) {
throw new Exception("fetch from jedis pool failed,null object!");
}
if ("null".equals(version)) {
version = "";
}
String routekey =
RouteUtil.getPrefixedKey("",RouteUtil.APIROUTE, serviceName, version,
RouteUtil.ROUTE_PATH_INFO);
Boolean isExist = jedis.exists(routekey);
if (isExist) {
apiRouteAccessInfo = new ServiceAccessInfo();
apiRouteAccessInfo.setServiceName(serviceName);
apiRouteAccessInfo.setVersion(version);
String accessAddr = "http://" + host + "/api/" + serviceName + "/" + version;
apiRouteAccessInfo.setAccessAddr(accessAddr);
}
} catch (Exception e) {
LOGGER.error("call redis throw exception", e);
} finally {
JedisUtil.returnJedisInstance(jedis);
}
return apiRouteAccessInfo;
}
public List<ServiceAccessInfo> getApiRouteAccessAddr(String serviceType, String serviceName,
String version, String host) {
List<ServiceAccessInfo> serviceList = new ArrayList<ServiceAccessInfo>();
Jedis jedis = null;
try {
jedis = JedisUtil.borrowJedisInstance();
if (jedis == null) {
throw new Exception("fetch from jedis pool failed,null object!");
}
String keyPattern = this.getRedisSearchPattern(serviceType, serviceName, version);
Set<String> infoKeys = jedis.keys(keyPattern);
Pattern pattern = this.getKeyPattern();
for (Iterator<String> iterator = infoKeys.iterator(); iterator.hasNext();) {
String infoKey = (String) iterator.next();
Matcher matcher = pattern.matcher(infoKey);
if (matcher.matches()) {
ServiceAccessInfo serviceAccessInfo = new ServiceAccessInfo();
serviceAccessInfo.setServiceType(matcher.group("servicetype"));
serviceAccessInfo.setServiceName(matcher.group("servicename"));
serviceAccessInfo.setVersion(matcher.group("version"));
this.buildServiceAccessAddr(serviceAccessInfo, host, infoKey, jedis);
serviceList.add(serviceAccessInfo);
}
}
} catch (Exception e) {
LOGGER.error("call redis throw exception", e);
} finally {
JedisUtil.returnJedisInstance(jedis);
}
return serviceList;
}
private void buildServiceAccessAddr(ServiceAccessInfo serviceAccessInfo, String host,
String infoKey, Jedis jedis) {
String serviceType = serviceAccessInfo.getServiceType();
StringBuffer accessAddr = new StringBuffer();
switch (serviceType) {
case RouteUtil.APIROUTE:
accessAddr.append("http://").append(host).append(":").append(JedisUtil.serverPort)
.append("/").append(serviceAccessInfo.getServiceType()).append("/")
.append(serviceAccessInfo.getServiceName()).append("/")
.append(serviceAccessInfo.getVersion());
serviceAccessInfo.setAccessAddr(accessAddr.toString());
break;
case RouteUtil.IUIROUTE:
accessAddr.append("http://").append(host).append(":").append(JedisUtil.serverPort)
.append("/").append(serviceAccessInfo.getServiceType()).append("/")
.append(serviceAccessInfo.getServiceName());
serviceAccessInfo.setAccessAddr(accessAddr.toString());
break;
case RouteUtil.CUSTOMROUTE:
accessAddr.append("http://").append(host).append(":").append(JedisUtil.serverPort)
.append(serviceAccessInfo.getServiceName());
serviceAccessInfo.setAccessAddr(accessAddr.toString());
break;
case RouteUtil.P2PROUTE:
accessAddr.append(jedis.hget(infoKey, "url"));
serviceAccessInfo.setAccessAddr(accessAddr.toString());
break;
default:
serviceAccessInfo.setAccessAddr("not supported now");
break;
}
}
private String getRedisSearchPattern(String serviceType, String serviceName, String version) {
StringBuffer sb = new StringBuffer();
sb.append(RouteUtil.ROUTE_PATH);
if (null != serviceType && !"".equals(serviceType)) {
sb.append(":").append(serviceType);
} else {
sb.append(":").append("*");
}
sb.append(":").append(serviceName);
if (null != version && !"".equals(version)) {
sb.append(":");
sb.append(version);
sb.append(":");
} else {
sb.append(":*");
}
sb.append(RouteUtil.ROUTE_PATH_INFO);
return sb.toString();
}
private Pattern getKeyPattern() {
String pStr =
"conductor:routing:(?<servicetype>api|iui|custom|p2p):(?<servicename>[^:]+)(:(?<version>[^:]*))?:info";
return Pattern.compile(pStr);
}
}
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