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com.alogic.remote.route.Route Maven / Gradle / Ivy
package com.alogic.remote.route;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.commons.lang3.StringUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import com.alogic.remote.backend.AppBackends;
import com.alogic.remote.backend.Backend;
import com.alogic.remote.backend.BackendProvider;
import com.anysoft.util.Configurable;
import com.anysoft.util.JsonTools;
import com.anysoft.util.Properties;
import com.anysoft.util.PropertiesConstants;
import com.anysoft.util.Reportable;
import com.anysoft.util.XMLConfigurable;
import com.anysoft.util.XmlElementProperties;
import com.anysoft.util.XmlTools;
/**
* 应用路由
* @author duanyy
* @since 1.6.8.12
*/
public interface Route extends Reportable,Configurable,XMLConfigurable,AutoCloseable{
/**
* 获取id
* @return id
*/
public String id();
/**
* 找到指定应用指定规则的路由
*
* @param app 应用
* @param route 路由
* @return 后端节点列表
*/
public List select(String app,String route);
/**
* 找到指定应用指定规则的路由
* @param app 应用
* @param p 变量集
* @return 后端节点列表
*/
public List select(String app,Properties p);
/**
* 设置provider
* @param provider 提供者
*/
public void setBackendProvider(BackendProvider provider);
/**
* 重构路由
* @param app 变更的应用的路由信息
*/
public void rebuild(AppBackends app);
/**
* 虚基类
*
* @author duanyy
*
*/
public abstract class Abstract implements Route{
private String id;
private BackendProvider provider = null;
public Abstract(){
}
public Abstract(String id,BackendProvider provider){
this.id = id;
this.provider = provider;
}
@Override
public String id(){
return id;
}
@Override
public void report(Element xml) {
if (xml != null){
XmlTools.setString(xml,"module",getClass().getName());
XmlTools.setString(xml,"id",id());
}
}
@Override
public void report(Map json) {
if (json != null){
JsonTools.setString(json,"module",getClass().getName());
JsonTools.setString(json,"id",id());
}
}
@Override
public void configure(Element e, Properties p) {
Properties props = new XmlElementProperties(e,p);
configure(props);
}
@Override
public void configure(Properties p) {
id = PropertiesConstants.getString(p,"id","",true);
}
@Override
public void close() {
// nothing to do
}
public AppBackends get(String id){
return provider.load(id);
}
@Override
public void setBackendProvider(BackendProvider p){
provider = p;
}
}
/**
* 指定应用的路由
* @author duanyy
* @version 1.1.10.23 [20161118 duanyy] > routes = new ConcurrentHashMap>();
protected long timestamp = System.currentTimeMillis();
public synchronized void add(String route,Backend backend){
List found = routes.get(route);
if (found == null){
found = new ArrayList();
routes.put(route,found);
}
found.add(backend);
}
public void clear(){
routes.clear();
}
public List get(String route){
return routes.get(route);
}
public boolean isExpired(){
return System.currentTimeMillis() - timestamp > 30 * 60 * 1000L;
}
@Override
public void report(Element xml) {
if (xml != null){
Document doc = xml.getOwnerDocument();
Iterator>> iter = routes.entrySet().iterator();
while (iter.hasNext()){
Entry> entry = iter.next();
Element item = doc.createElement("item");
XmlTools.setString(item,"id",entry.getKey());
List list = entry.getValue();
for (Backend b:list){
Element backend = doc.createElement("backend");
b.report(backend);
item.appendChild(backend);
}
xml.appendChild(item);
}
}
}
@Override
public void report(Map json) {
if (json != null){
Iterator>> iter = routes.entrySet().iterator();
List items = new ArrayList();
while (iter.hasNext()){
Entry> entry = iter.next();
Map item = new HashMap();
JsonTools.setString(item,"id",entry.getKey());
List backends = new ArrayList();
List list = entry.getValue();
for (Backend b:list){
Map map = new HashMap();
b.report(map);
backends.add(map);
}
item.put("backend", backends);
items.add(item);
}
json.put("item", items);
}
}
}
/**
* 基于二级索引的实现
*
* @author duanyy
*
*/
public abstract class Indexed extends Abstract{
/**
* app的路由
*/
protected Map routes = new ConcurrentHashMap();
public Indexed(){
}
public Indexed(String id,BackendProvider provider){
super(id,provider);
}
@Override
public List select(String app, String route) {
AppRoute ar = routes.get(app);
if (ar == null || ar.isExpired()){
synchronized(this){
if (ar == null){
ar = new AppRoute();
routes.put(app, ar);
AppBackends appBackends = get(app);
if (appBackends != null){
rebuild(ar,appBackends);
}
}
}
}
return ar.get(route);
}
@Override
public List select(String app, Properties p) {
String route = getRoute(app,p);
return select(app,route);
}
protected abstract String getRoute(String app, Properties p);
@Override
public synchronized void rebuild(AppBackends app) {
if (app == null){
routes.clear();
}else{
String id = app.getId();
AppRoute ar = routes.get(id);
if (ar == null){
ar = new AppRoute();
routes.put(id, ar);
}else{
ar.clear();
}
rebuild(ar,app);
}
}
protected abstract void rebuild(AppRoute ar, AppBackends app);
@Override
public void report(Element xml) {
if (xml != null){
super.report(xml);
boolean detail = XmlTools.getBoolean(xml, "detail", false);
if (detail){
String app = XmlTools.getString(xml, "app", "");
if (StringUtils.isNotEmpty(app)){
AppRoute ar = routes.get(app);
if (ar != null){
ar.report(xml);
}
}
}
}
}
@Override
public void report(Map json) {
if (json != null){
super.report(json);
boolean detail = JsonTools.getBoolean(json, "detail", false);
if (detail){
String app = JsonTools.getString(json, "app", "");
if (StringUtils.isNotEmpty(app)){
AppRoute ar = routes.get(app);
if (ar != null){
ar.report(json);
}
}
}
}
}
}
}
