msgpack/example/cpp03/protocol.cpp

#include <msgpack.hpp>
#include <string>
#include <iostream>
#include <sstream>

namespace myprotocol {
    using namespace msgpack::type;
    using msgpack::define;

    struct Get : define< tuple<uint32_t, std::string> > {
        Get() { }
        Get(uint32_t f, const std::string& k) :
            define_type(msgpack_type(f, k)) { }
        uint32_t&    flags() { return msgpack::type::get<0>(*this); }
        std::string& key()   { return msgpack::type::get<1>(*this); }
    };

    struct Put : define< tuple<uint32_t, std::string, raw_ref> > {
        Put() { }
        Put(uint32_t f, const std::string& k, const char* valref, uint32_t vallen) :
            define_type(msgpack_type( f, k, raw_ref(valref,vallen) )) { }
        uint32_t&    flags() { return msgpack::type::get<0>(*this); }
        std::string& key()   { return msgpack::type::get<1>(*this); }
        raw_ref&     value() { return msgpack::type::get<2>(*this); }
    };

    struct MultiGet : define< std::vector<Get> > {
    };
}


int main(void)
{
    // send Get request
    std::stringstream stream;
    {
        myprotocol::Get req;
        req.flags() = 0;
        req.key()   = "key0";
        msgpack::pack(stream, req);
    }

    stream.seekg(0);

    // receive Get request
    {
        std::string buffer(stream.str());

        msgpack::unpacked result;
        msgpack::unpack(result, buffer.data(), buffer.size());
        msgpack::object o = result.get();

        myprotocol::Get req;
        o.convert(req);
        std::cout << "received: " << o << std::endl;
    }


    stream.str("");


    // send MultiGet request
    {
        myprotocol::MultiGet req;
        req.push_back( myprotocol::Get(1, "key1") );
        req.push_back( myprotocol::Get(2, "key2") );
        req.push_back( myprotocol::Get(3, "key3") );
        msgpack::pack(stream, req);
    }

    stream.seekg(0);

    // receive MultiGet request
    {
        std::string buffer(stream.str());

        msgpack::unpacked result;
        msgpack::unpack(result, buffer.data(), buffer.size());
        msgpack::object o = result.get();


        myprotocol::MultiGet req;
        o.convert(req);
        std::cout << "received: " << o << std::endl;
    }
}