com.logicbus.backend.AppProxyNormalizer Maven / Gradle / Ivy
package com.logicbus.backend;
import javax.servlet.http.HttpServletRequest;
import com.anysoft.util.Properties;
import com.anysoft.util.PropertiesConstants;
import com.logicbus.models.catalog.Path;
/**
* 基于app的代理地址的标准化
*
* 负责将代理地址标准化，代理请求定向到固定的代理服务上。
*
* 代理地址的语法为：
*
* http://[:]/proxy//<服务名>?<服务参数>
*
* @author duanyy
*
* @since 1.2.7.2
*
* @version 1.2.8.2 [20141010 duanyy]
* - 修正app取值中的/问题
* @version 1.6.4.4 [20150910 duanyy]
* - 缺省的代理服务的路径调整为/alogic/util/Proxy
*/
public class AppProxyNormalizer implements Normalizer {
protected String proxyServiceId = "/alogic/util/Proxy";
public AppProxyNormalizer(Properties p){
proxyServiceId = PropertiesConstants.getString(p, "normalizer.appproxy.id", proxyServiceId);
}
public Path normalize(Context ctx, HttpServletRequest request) {
String path = request.getPathInfo();
String queryString = request.getQueryString();
String app = null;
String svc = null;
if (path != null && path.length() > 0){
int start = findStart(path);
int pos = findPos(start,path);
app = path.substring(start,pos);
svc = path.substring(pos);
}
if (app != null && app.length() > 0){
ctx.SetValue("app", app);
}
if (svc != null && svc.length() > 0){
ctx.SetValue("service", svc);
}
if (queryString != null && queryString.length() > 0 ){
ctx.SetValue("query", queryString);
}
return new Path(proxyServiceId);
}
static private int findPos(int start,String path){
int length = path.length();
int found = -1;
boolean inSlash = true;
for (int i = start ; i < length ; i ++){
if (inSlash){
if (path.charAt(i) != '/'){
inSlash = false;
}
}else{
if (path.charAt(i) == '/'){
found = i;
break;
}
}
}
if (found < 0){
found = path.length();
}
return found;
}
static private int findStart(String path){
int length = path.length();
int found = 0;
for ( ; found < length ; found++){
if (path.charAt(found) != '/'){
return found;
}
}
return found;
}
}