/*
* Copyright Beijing 58 Information Technology Co.,Ltd.
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.bj58.spat.gaea.client.configuration;
import com.bj58.spat.gaea.client.GaeaConst;
import com.bj58.spat.gaea.client.configuration.commmunication.ProtocolProfile;
import com.bj58.spat.gaea.client.configuration.commmunication.SocketPoolProfile;
import com.bj58.spat.gaea.client.configuration.loadbalance.ServerProfile;
import com.bj58.spat.gaea.client.configuration.secure.KeyProfile;
import com.bj58.spat.gaea.client.utility.helper.XMLHelper;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import javax.xml.xpath.*;
import org.w3c.dom.*;
/**
* ServiceConfig
*
* @author Service Platform Architecture Team (spat@58.com)
*/
public final class ServiceConfig {
private String servicename;
private int serviceid;
private SocketPoolProfile SocketPool;
private ProtocolProfile protocol;
private List<ServerProfile> servers;
private KeyProfile SecureKey;//授权配置文件
public KeyProfile getSecureKey() {
return SecureKey;
}
public void setSecureKey(KeyProfile secureKey) {
SecureKey = secureKey;
}
private ServiceConfig() {
}
public SocketPoolProfile getSocketPool() {
return SocketPool;
}
public ProtocolProfile getProtocol() {
return protocol;
}
public List<ServerProfile> getServers() {
return servers;
}
public int getServiceid() {
return serviceid;
}
public String getServicename() {
return servicename;
}
public static ServiceConfig GetConfig(String serviceName) throws Exception {
File f = new File(GaeaConst.CONFIG_PATH);
if (!f.exists()) {
throw new Exception("gaea.config not fond:" + GaeaConst.CONFIG_PATH);
}
Element xmlDoc = XMLHelper.GetXmlDoc(GaeaConst.CONFIG_PATH);
XPathFactory xpathFactory = XPathFactory.newInstance();
XPath xpath = xpathFactory.newXPath();
Node serviceNode = (Node) xpath.evaluate("//Service[@name='" + serviceName + "']", xmlDoc, XPathConstants.NODE);
if(serviceNode == null){
printExceprion(0,serviceName);
}
ServiceConfig config = new ServiceConfig();
config.servicename = serviceNode.getAttributes().getNamedItem("name").getNodeValue();
Node idNode = serviceNode.getAttributes().getNamedItem("id");
if(idNode == null){
printExceprion(4,serviceName);
}
config.serviceid = Integer.parseInt(idNode.getNodeValue());
Node xnSocketPool = (Node) xpath.evaluate("Commmunication/SocketPool", serviceNode, XPathConstants.NODE);
if(xnSocketPool == null){
printExceprion(1,serviceName);
}
config.SocketPool = new SocketPoolProfile(xnSocketPool);
Node xnProtocol = (Node) xpath.evaluate("Commmunication/Protocol", serviceNode, XPathConstants.NODE);
if(xnProtocol == null){
printExceprion(2,serviceName);
}
config.protocol = new ProtocolProfile(xnProtocol);
/**
* 加载授权文件key
*/
Node xnKey = (Node) xpath.evaluate("Secure/Key", serviceNode, XPathConstants.NODE);
config.SecureKey = new KeyProfile(xnKey);
NodeList xnServers = (NodeList) xpath.evaluate("Loadbalance/Server/add", serviceNode, XPathConstants.NODESET);
if(xnServers == null || xnServers.getLength() == 0){
printExceprion(3,serviceName);
}
List<ServerProfile> servers = new ArrayList<ServerProfile>();
for (int i = 0; i < xnServers.getLength(); i++) {
servers.add(new ServerProfile(xnServers.item(i)));
}
config.servers = servers;
config.servicename = serviceName;
return config;
}
private static void printExceprion(int i, String serviceName) throws Exception{
switch (i) {
case 0:
throw new Exception("gaea.config中没有发现" + serviceName + "服务节点!");
case 1:
throw new Exception("gaea.config服务节点" + serviceName + "没有发现Commmunication/SocketPool配置!");
case 2:
throw new Exception("gaea.config服务节点" + serviceName + "没有发现Commmunication/Protocol配置!");
case 3:
throw new Exception("gaea.config服务节点" + serviceName + "没有发现Loadbalance/Server/add配置!");
case 4:
throw new Exception("gaea.config服务节点" + serviceName + "没有发现Service/id配置!");
default:
break;
}
}
}