scouter.agent.trace.api.ForHttpURLConnection 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.agent.trace.api;
import java.lang.reflect.Field;
import java.net.HttpURLConnection;
import java.net.URL;
import scouter.agent.Configure;
import scouter.agent.plugin.PluginHttpCallTrace;
import scouter.agent.trace.HookArgs;
import scouter.agent.trace.TraceContext;
import scouter.lang.step.ApiCallStep;
import scouter.util.Hexa32;
import scouter.util.KeyGen;
public class ForHttpURLConnection implements ApiCallTraceHelper.IHelper {
static Class httpclass = null;
static Field inputStream = null;
static {
try {
httpclass = sun.net.www.protocol.http.HttpURLConnection.class;
inputStream = httpclass.getDeclaredField("inputStream");
inputStream.setAccessible(true);
} catch (Throwable e) {
inputStream = null;
httpclass = null;
}
}
public ApiCallStep process(TraceContext ctx, HookArgs hookPoint) {
ApiCallStep step = new ApiCallStep();
try {
if (hookPoint.this1 instanceof sun.net.www.protocol.http.HttpURLConnection) {
if (inputStream.get(hookPoint.this1) != null) {
// Null 추적이 종료된다.
return null;
}
}
HttpURLConnection urlCon = ((HttpURLConnection) hookPoint.this1);
if ("connect".equals(hookPoint.method)) {
step.txid = KeyGen.next();
transfer(ctx, urlCon, step.txid);
ctx.callee = step.txid;
return null; // apicall을 무시함...
} else {
if (ctx.callee == 0) { // connect가 호출되지 않음
step.txid = KeyGen.next();
transfer(ctx, urlCon, step.txid);
} else {
step.txid = ctx.callee;
ctx.callee = 0;
}
URL url = urlCon.getURL();
ctx.apicall_name = url.getPath();
step.opt = 1;
step.address = url.getHost() + ":" + url.getPort();
}
} catch (Exception e) {
}
if (ctx.apicall_name == null)
ctx.apicall_name = hookPoint.class1;
return step;
}
private void transfer(TraceContext ctx, HttpURLConnection urlCon, long calleeTxid) {
Configure conf = Configure.getInstance();
if (conf.trace_interservice_enabled) {
if (ctx.gxid == 0) {
ctx.gxid = ctx.txid;
}
try {
urlCon.setRequestProperty(conf._trace_interservice_gxid_header_key, Hexa32.toString32(ctx.gxid));
urlCon.setRequestProperty(conf._trace_interservice_callee_header_key, Hexa32.toString32(calleeTxid));
urlCon.setRequestProperty(conf._trace_interservice_caller_header_key, Hexa32.toString32(ctx.txid));
PluginHttpCallTrace.call(ctx, urlCon);
} catch (Throwable t) {
}
}
}
public void checkTarget(HookArgs hookPoint) {
}
}