scouter.agent.trace.api.ForRibbonLB 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 scouter.agent.Configure;
import scouter.agent.plugin.PluginHttpCallTrace;
import scouter.agent.proxy.IHttpClient;
import scouter.agent.proxy.NettyHttpClientFactory;
import scouter.agent.trace.HookArgs;
import scouter.agent.trace.TraceContext;
import scouter.lang.step.ApiCallStep;
import scouter.util.Hexa32;
import scouter.util.IntKeyLinkedMap;
import scouter.util.KeyGen;
public class ForRibbonLB implements ApiCallTraceHelper.IHelper {
private int fail = 0;
private static IntKeyLinkedMap httpclients = new IntKeyLinkedMap().setMax(5);
public ApiCallStep process(TraceContext ctx, HookArgs hookPoint) {
ApiCallStep step = new ApiCallStep();
if (fail < 100 && hookPoint.args != null && hookPoint.args.length > 2) {
try {
IHttpClient httpclient = getProxy(hookPoint);
step.txid = KeyGen.next();
transfer(httpclient, ctx, hookPoint.args[1], step.txid);
String host = httpclient.getHost(hookPoint.args[0]);
step.opt = 1;
step.address = host;
ctx.apicall_name = httpclient.getURI(hookPoint.args[1]);
ctx.apicall_name = fw_stripes(ctx.apicall_name);
} catch (Throwable e) {
ctx.apicall_name = e.toString();
e.printStackTrace();
fail++;
}
}
if (ctx.apicall_name == null)
ctx.apicall_name = hookPoint.class1;
return step;
}
private IHttpClient getProxy(HookArgs hookPoint) {
int key = System.identityHashCode(hookPoint.this1.getClass());
IHttpClient httpclient = httpclients.get(key);
if (httpclient == null) {
synchronized (this) {
httpclient = NettyHttpClientFactory.create(hookPoint.this1.getClass().getClassLoader());
httpclients.put(key, httpclient);
}
}
return httpclient;
}
private void transfer(IHttpClient httpclient, TraceContext ctx, Object req, long calleeTxid) {
Configure conf = Configure.getInstance();
if (conf.trace_interservice_enabled) {
try {
if (ctx.gxid == 0) {
ctx.gxid = ctx.txid;
}
httpclient.addHeader(req, conf._trace_interservice_gxid_header_key, Hexa32.toString32(ctx.gxid));
httpclient.addHeader(req, conf._trace_interservice_caller_header_key, Hexa32.toString32(ctx.txid));
httpclient.addHeader(req, conf._trace_interservice_callee_header_key, Hexa32.toString32(calleeTxid));
PluginHttpCallTrace.call(ctx, httpclient, req);
} catch (Exception e) {
}
}
}
private String fw_stripes(String url) {
if (url == null)
return null;
int y = url.indexOf('?');
if (y > 0) {
return url.substring(0, y);
}
return url;
}
}