/*
* Copyright 2015 NAVER Corp.
*
* 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 com.navercorp.pinpoint.plugin.thrift.interceptor.tprotocol.client;
import static com.navercorp.pinpoint.plugin.thrift.ThriftScope.THRIFT_CLIENT_SCOPE;
import com.navercorp.pinpoint.bootstrap.interceptor.annotation.Scope;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TProtocol;
import com.navercorp.pinpoint.bootstrap.interceptor.AroundInterceptor;
import com.navercorp.pinpoint.bootstrap.interceptor.annotation.Name;
import com.navercorp.pinpoint.bootstrap.interceptor.scope.ExecutionPolicy;
import com.navercorp.pinpoint.bootstrap.interceptor.scope.InterceptorScope;
import com.navercorp.pinpoint.bootstrap.interceptor.scope.InterceptorScopeInvocation;
import com.navercorp.pinpoint.bootstrap.logging.PLogger;
import com.navercorp.pinpoint.bootstrap.logging.PLoggerFactory;
import com.navercorp.pinpoint.plugin.thrift.ThriftRequestProperty;
import com.navercorp.pinpoint.plugin.thrift.ThriftHeader;
/**
* This interceptor writes the trace data directly on the wire to allow remote tracing. Trace data is written AFTER all the data fields of the Thrift message
* have been written out.
* <p>
* <tt>TServiceClientSendBaseInterceptor</tt> -> <b><tt>TProtocolWriteFieldStopInterceptor</tt></b>
* <p>
* Based on Thrift 0.8.0+
*
* @author HyunGil Jeong
*
* @see com.navercorp.pinpoint.plugin.thrift.interceptor.client.TServiceClientSendBaseInterceptor TServiceClientSendBaseInterceptor
*/
@Scope(value = THRIFT_CLIENT_SCOPE, executionPolicy = ExecutionPolicy.INTERNAL)
public class TProtocolWriteFieldStopInterceptor implements AroundInterceptor {
private final PLogger logger = PLoggerFactory.getLogger(this.getClass());
private final boolean isDebug = logger.isDebugEnabled();
private final InterceptorScope scope;
public TProtocolWriteFieldStopInterceptor(@Name(THRIFT_CLIENT_SCOPE) InterceptorScope scope) {
this.scope = scope;
}
@Override
public void before(Object target, Object[] args) {
if (isDebug) {
logger.beforeInterceptor(target, args);
}
if (target instanceof TProtocol) {
TProtocol oprot = (TProtocol)target;
try {
appendParentTraceInfo(oprot);
} catch (Throwable t) {
logger.warn("problem writing trace info", t);
}
}
}
@Override
public void after(Object target, Object[] args, Object result, Throwable throwable) {
// Do nothing
}
private void appendParentTraceInfo(TProtocol oprot) throws TException {
InterceptorScopeInvocation currentTransaction = this.scope.getCurrentInvocation();
ThriftRequestProperty parentTraceInfo = (ThriftRequestProperty)currentTransaction.getAttachment();
if (parentTraceInfo == null) {
return;
}
boolean shouldSample = parentTraceInfo.shouldSample(true);
if (!shouldSample) {
parentTraceInfo.writeTraceHeader(ThriftHeader.THRFIT_SAMPLED, oprot);
return;
}
parentTraceInfo.writeTraceHeader(ThriftHeader.THRIFT_TRACE_ID, oprot);
parentTraceInfo.writeTraceHeader(ThriftHeader.THRIFT_SPAN_ID, oprot);
parentTraceInfo.writeTraceHeader(ThriftHeader.THRIFT_PARENT_SPAN_ID, oprot);
parentTraceInfo.writeTraceHeader(ThriftHeader.THRIFT_FLAGS, oprot);
parentTraceInfo.writeTraceHeader(ThriftHeader.THRIFT_PARENT_APPLICATION_NAME, oprot);
parentTraceInfo.writeTraceHeader(ThriftHeader.THRIFT_PARENT_APPLICATION_TYPE, oprot);
parentTraceInfo.writeTraceHeader(ThriftHeader.THRIFT_HOST, oprot);
}
}