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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
#include "PeekProcessor.h"
using namespace apache::thrift::transport;
using namespace apache::thrift::protocol;
using namespace apache::thrift;
namespace apache { namespace thrift { namespace processor {
PeekProcessor::PeekProcessor() {
memoryBuffer_.reset(new TMemoryBuffer());
targetTransport_ = memoryBuffer_;
}
PeekProcessor::~PeekProcessor() {}
void PeekProcessor::initialize(boost::shared_ptr<TProcessor> actualProcessor,
boost::shared_ptr<TProtocolFactory> protocolFactory,
boost::shared_ptr<TPipedTransportFactory> transportFactory) {
actualProcessor_ = actualProcessor;
pipedProtocol_ = protocolFactory->getProtocol(targetTransport_);
transportFactory_ = transportFactory;
transportFactory_->initializeTargetTransport(targetTransport_);
}
boost::shared_ptr<TTransport> PeekProcessor::getPipedTransport(boost::shared_ptr<TTransport> in) {
return transportFactory_->getTransport(in);
}
void PeekProcessor::setTargetTransport(boost::shared_ptr<TTransport> targetTransport) {
targetTransport_ = targetTransport;
if (boost::dynamic_pointer_cast<TMemoryBuffer>(targetTransport_)) {
memoryBuffer_ = boost::dynamic_pointer_cast<TMemoryBuffer>(targetTransport);
} else if (boost::dynamic_pointer_cast<TPipedTransport>(targetTransport_)) {
memoryBuffer_ = boost::dynamic_pointer_cast<TMemoryBuffer>(boost::dynamic_pointer_cast<TPipedTransport>(targetTransport_)->getTargetTransport());
}
if (!memoryBuffer_) {
throw TException("Target transport must be a TMemoryBuffer or a TPipedTransport with TMemoryBuffer");
}
}
bool PeekProcessor::process(boost::shared_ptr<TProtocol> in,
boost::shared_ptr<TProtocol> out) {
std::string fname;
TMessageType mtype;
int32_t seqid;
in->readMessageBegin(fname, mtype, seqid);
if (mtype != T_CALL) {
throw TException("Unexpected message type");
}
// Peek at the name
peekName(fname);
TType ftype;
int16_t fid;
while (true) {
in->readFieldBegin(fname, ftype, fid);
if (ftype == T_STOP) {
break;
}
// Peek at the variable
peek(in, ftype, fid);
in->readFieldEnd();
}
in->readMessageEnd();
in->getTransport()->readEnd();
//
// All the data is now in memoryBuffer_ and ready to be processed
//
// Let's first take a peek at the full data in memory
uint8_t* buffer;
uint32_t size;
memoryBuffer_->getBuffer(&buffer, &size);
peekBuffer(buffer, size);
// Done peeking at variables
peekEnd();
bool ret = actualProcessor_->process(pipedProtocol_, out);
memoryBuffer_->resetBuffer();
return ret;
}
void PeekProcessor::peekName(const std::string& fname) {
}
void PeekProcessor::peekBuffer(uint8_t* buffer, uint32_t size) {
}
void PeekProcessor::peek(boost::shared_ptr<TProtocol> in,
TType ftype,
int16_t fid) {
in->skip(ftype);
}
void PeekProcessor::peekEnd() {}
}}}
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