scouter.server.netio.service.ServiceHandlingProxy Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* 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 scouter.server.netio.service;
import scouter.io.DataInputX;
import scouter.io.DataOutputX;
import scouter.server.Configure;
import scouter.server.Logger;
import scouter.server.netio.service.anotation.ServiceHandler;
import scouter.util.scan.Scanner;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;
public class ServiceHandlingProxy {
protected static HashMap handlers = new HashMap();
protected static class Invocation {
Object object;
Method method;
public Invocation(Object object, Method method) {
this.object = object;
this.method = method;
}
public void exec(DataInputX in, DataOutputX out, boolean login) {
try {
method.invoke(object, new Object[] { in, out, login });
} catch (InvocationTargetException t) {
if (t.getCause() != null) {
t.getCause().printStackTrace();
} else {
t.printStackTrace();
}
} catch (Exception e) {
Logger.println("S777", 10, "Service Exception", e);
e.printStackTrace();
}
}
@Override
public String toString() {
return object.getClass().getName() + "." + method.getName();
}
}
public static void load() {
String pkg = Scanner.cutOutLast(ServiceHandlingProxy.class.getName(), ".");
Set classes = new Scanner(pkg).process(ServiceHandlingProxy.class.getClassLoader());
Set custom = new Scanner(System.getProperty("scouter.handler")).process();
classes.addAll(custom);
Iterator itr = classes.iterator();
while (itr.hasNext()) {
try {
Class c = Class.forName(itr.next());
if (Modifier.isPublic(c.getModifiers()) == false) {
continue;
}
try {
Method[] m = c.getDeclaredMethods();
for (int i = 0; i < m.length; i++) {
ServiceHandler mapAn = (ServiceHandler) m[i].getAnnotation(ServiceHandler.class);
if (mapAn == null)
continue;
String key = mapAn.value();
Invocation news = new Invocation(c.newInstance(), m[i]);
Invocation olds = handlers.get(key);
if (olds != null) {
Logger.println("Warning duplicated Handler key=" + key + " old=" + olds + " new=" + news);
} else {
if (Configure.getInstance().log_service_handler_list) {
Logger.println("ServiceHandler " + key + "=>" + news);
}
}
handlers.put(key, news);
}
} catch (Exception x) {
x.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static void process(String cmd, DataInputX in, DataOutputX out, boolean login) {
Invocation handler = handlers.get(cmd);
if (handler != null) {
handler.exec(in, out, login);
} else {
// Logger.println("no handler " + cmd);
throw new RuntimeException("no handler cmd=" + cmd);
}
}
public static void main(String[] args) {
load();
}
}