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302 lines
8.4 KiB
302 lines
8.4 KiB
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef THRIFT_PROTOCOL_TBINARYPROTOCOL_H_
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#define THRIFT_PROTOCOL_TBINARYPROTOCOL_H_ 1
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#include "thrift/lib/cpp/protocol/TProtocol.h"
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#include "thrift/lib/cpp/protocol/TVirtualProtocol.h"
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#include <boost/shared_ptr.hpp>
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namespace apache { namespace thrift { namespace protocol {
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/**
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* The default binary protocol for thrift. Writes all data in a very basic
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* binary format, essentially just spitting out the raw bytes.
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*
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*/
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template <class Transport_>
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class TBinaryProtocolT
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: public TVirtualProtocol< TBinaryProtocolT<Transport_> > {
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public:
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static const int32_t VERSION_MASK = 0xffff0000;
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static const int32_t VERSION_1 = 0x80010000;
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// VERSION_2 (0x80020000) is taken by TDenseProtocol.
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TBinaryProtocolT(const boost::shared_ptr<Transport_>& trans) :
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TVirtualProtocol< TBinaryProtocolT<Transport_> >(trans),
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trans_(trans.get()),
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string_limit_(0),
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container_limit_(0),
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strict_read_(false),
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strict_write_(true),
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string_buf_(NULL),
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string_buf_size_(0) {}
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TBinaryProtocolT(const boost::shared_ptr<Transport_>& trans,
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int32_t string_limit,
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int32_t container_limit,
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bool strict_read,
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bool strict_write) :
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TVirtualProtocol< TBinaryProtocolT<Transport_> >(trans),
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trans_(trans.get()),
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string_limit_(string_limit),
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container_limit_(container_limit),
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strict_read_(strict_read),
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strict_write_(strict_write),
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string_buf_(NULL),
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string_buf_size_(0) {}
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/**
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* Construct a TBinaryProtocolT using a raw pointer to the transport.
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*
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* The caller is responsible for ensuring that the transport remains valid
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* for the lifetime of the protocol.
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*/
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TBinaryProtocolT(Transport_* trans) :
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TVirtualProtocol< TBinaryProtocolT<Transport_> >(trans),
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trans_(trans),
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string_limit_(0),
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container_limit_(0),
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strict_read_(false),
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strict_write_(true),
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string_buf_(NULL),
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string_buf_size_(0) {}
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~TBinaryProtocolT() {
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if (string_buf_ != NULL) {
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std::free(string_buf_);
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string_buf_size_ = 0;
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}
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}
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void setStringSizeLimit(int32_t string_limit) {
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string_limit_ = string_limit;
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}
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void setContainerSizeLimit(int32_t container_limit) {
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container_limit_ = container_limit;
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}
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void setStrict(bool strict_read, bool strict_write) {
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strict_read_ = strict_read;
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strict_write_ = strict_write;
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}
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/**
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* Writing functions.
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*/
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/*ol*/ uint32_t writeMessageBegin(const std::string& name,
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const TMessageType messageType,
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const int32_t seqid);
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/*ol*/ uint32_t writeMessageEnd();
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inline uint32_t writeStructBegin(const char* name);
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inline uint32_t writeStructEnd();
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inline uint32_t writeFieldBegin(const char* name,
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const TType fieldType,
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const int16_t fieldId);
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inline uint32_t writeFieldEnd();
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inline uint32_t writeFieldStop();
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inline uint32_t writeMapBegin(const TType keyType,
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const TType valType,
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const uint32_t size);
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inline uint32_t writeMapEnd();
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inline uint32_t writeListBegin(const TType elemType, const uint32_t size);
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inline uint32_t writeListEnd();
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inline uint32_t writeSetBegin(const TType elemType, const uint32_t size);
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inline uint32_t writeSetEnd();
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inline uint32_t writeBool(const bool value);
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inline uint32_t writeByte(const int8_t byte);
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inline uint32_t writeI16(const int16_t i16);
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inline uint32_t writeI32(const int32_t i32);
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inline uint32_t writeI64(const int64_t i64);
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inline uint32_t writeDouble(const double dub);
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template <typename StrType>
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inline uint32_t writeString(const StrType& str);
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inline uint32_t writeBinary(const std::string& str);
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/**
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* Reading functions
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*/
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/*ol*/ uint32_t readMessageBegin(std::string& name,
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TMessageType& messageType,
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int32_t& seqid);
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/*ol*/ uint32_t readMessageEnd();
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inline uint32_t readStructBegin(std::string& name);
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inline uint32_t readStructEnd();
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inline uint32_t readFieldBegin(std::string& name,
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TType& fieldType,
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int16_t& fieldId);
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inline uint32_t readFieldEnd();
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inline uint32_t readMapBegin(TType& keyType,
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TType& valType,
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uint32_t& size);
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inline uint32_t readMapEnd();
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inline uint32_t readListBegin(TType& elemType, uint32_t& size);
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inline uint32_t readListEnd();
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inline uint32_t readSetBegin(TType& elemType, uint32_t& size);
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inline uint32_t readSetEnd();
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inline uint32_t readBool(bool& value);
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// Provide the default readBool() implementation for std::vector<bool>
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using TVirtualProtocol< TBinaryProtocolT<Transport_> >::readBool;
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inline uint32_t readByte(int8_t& byte);
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inline uint32_t readI16(int16_t& i16);
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inline uint32_t readI32(int32_t& i32);
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inline uint32_t readI64(int64_t& i64);
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inline uint32_t readDouble(double& dub);
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template<typename StrType>
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inline uint32_t readString(StrType& str);
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inline uint32_t readBinary(std::string& str);
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protected:
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template<typename StrType>
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uint32_t readStringBody(StrType& str, int32_t sz);
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Transport_* trans_;
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int32_t string_limit_;
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int32_t container_limit_;
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// Enforce presence of version identifier
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bool strict_read_;
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bool strict_write_;
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// Buffer for reading strings, save for the lifetime of the protocol to
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// avoid memory churn allocating memory on every string read
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uint8_t* string_buf_;
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int32_t string_buf_size_;
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};
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typedef TBinaryProtocolT<transport::TTransport> TBinaryProtocol;
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class TBinaryProtocolFactoryBase : public TProtocolFactory {};
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/**
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* Constructs binary protocol handlers
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*/
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template <class Transport_>
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class TBinaryProtocolFactoryT : public TBinaryProtocolFactoryBase {
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public:
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TBinaryProtocolFactoryT() :
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string_limit_(0),
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container_limit_(0),
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strict_read_(false),
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strict_write_(true) {}
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TBinaryProtocolFactoryT(int32_t string_limit, int32_t container_limit,
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bool strict_read, bool strict_write) :
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string_limit_(string_limit),
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container_limit_(container_limit),
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strict_read_(strict_read),
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strict_write_(strict_write) {}
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virtual ~TBinaryProtocolFactoryT() {}
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void setStringSizeLimit(int32_t string_limit) {
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string_limit_ = string_limit;
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}
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void setContainerSizeLimit(int32_t container_limit) {
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container_limit_ = container_limit;
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}
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void setStrict(bool strict_read, bool strict_write) {
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strict_read_ = strict_read;
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strict_write_ = strict_write;
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}
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boost::shared_ptr<TProtocol> getProtocol(
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boost::shared_ptr<transport::TTransport> trans) {
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boost::shared_ptr<Transport_> specific_trans =
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boost::dynamic_pointer_cast<Transport_>(trans);
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TProtocol* prot;
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if (specific_trans) {
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prot = new TBinaryProtocolT<Transport_>(specific_trans, string_limit_,
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container_limit_, strict_read_,
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strict_write_);
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} else {
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prot = new TBinaryProtocol(trans, string_limit_, container_limit_,
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strict_read_, strict_write_);
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}
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return boost::shared_ptr<TProtocol>(prot);
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}
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private:
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int32_t string_limit_;
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int32_t container_limit_;
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bool strict_read_;
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bool strict_write_;
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};
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typedef TBinaryProtocolFactoryT<transport::TTransport> TBinaryProtocolFactory;
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}}} // apache::thrift::protocol
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#include "TBinaryProtocol.tcc"
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#endif // #ifndef THRIFT_PROTOCOL_TBINARYPROTOCOL_H_
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