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JavaAgent.java
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67 lines (60 loc) · 2.13 KB
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/*
* 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.agent;
import java.lang.instrument.Instrumentation;
import scouter.agent.netio.data.net.TcpRequestMgr;
import scouter.agent.util.AsyncRunner;
import scouter.util.logo.Logo;
public class JavaAgent {
private static Instrumentation instrumentation;
public static void premain(String options, Instrumentation instrum) {
if (JavaAgent.instrumentation != null) {
return;
}
intro();
Configure.getInstance();
BackJobs.getInstance().put(Logger.class.getName(), 3000, Logger.initializer);
JavaAgent.instrumentation = instrum;
JavaAgent.instrumentation.addTransformer(new AgentTransformer());
// RequestAgent.getInstance();
TcpRequestMgr.getInstance();
AsyncRunner.getInstance().add(new AgentBoot());
}
private static void intro() {
try {
System.setProperty("scouter.enabled", "true");
Logo.print(false);
String nativeName = JavaAgent.class.getName().replace('.', '/') + ".class";
ClassLoader cl = JavaAgent.class.getClassLoader();
if (cl == null) {
Logger.println("loaded by system classloader ");
Logger.println(cut("" + ClassLoader.getSystemClassLoader().getResource(nativeName)));
} else {
Logger.println("loaded by app classloader ");
Logger.println(cut("" + cl.getResource(nativeName)));
}
} catch (Throwable t) {
}
}
private static String cut(String s) {
int x = s.indexOf('!');
return x > 0 ? s.substring(0, x) : s;
}
public static Instrumentation getInstrumentation() {
return instrumentation;
}
}