named_protobuf_cache.h

/*
 Copyright (c) 2013 by ScaleOut Software, Inc.

 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.
*/ 

#pragma once
#ifdef HAVE_PROTOBUF

#include <stdint.h>
#include <vector>
#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>

#ifdef _MSC_VER 
#pragma warning(push)
#pragma warning(disable: 4127 4244 4267)
#endif
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/message.h>
#ifdef _MSC_VER 
#pragma warning(pop)
#endif

#include "soss_client/typed_named_cache.h"
#include "soss_client/filter.h"
#include "soss_client/internal/protobuf_index_builder.h"

namespace sosscli {
namespace pb = ::google::protobuf;

template<typename T>
class NamedProtobufCache : public TypedNamedCache<T>
{
public:

 /* Constructors */

 NamedProtobufCache(const std::string &name) { this->init(name); }

 NamedProtobufCache(const uint32_t app_id) { this->init(app_id); }

 virtual ~NamedProtobufCache() {}

protected:

 virtual boost::shared_ptr<T> deserialize(const std::vector<uint8_t> &bytes)
 {
 boost::shared_ptr<T> obj_p = boost::make_shared<T>();
 obj_p->ParseFromArray(&bytes[0], static_cast<int>(bytes.size()));
 return obj_p;
 }

 virtual void serialize(T const & message, std::vector<uint8_t> &bytes_out, std::vector<uint8_t> &prop_spec_out)
 {
 int message_size = message.ByteSize();
 bytes_out.resize(message_size);
 message.SerializeToArray(bytes_out.data(), message_size);
 sosscli::internal::ProtobufIndexBuilder::generate_prop_spec(message, prop_spec_out);
 }

 virtual void serialize_filter(const Filter &filter, std::vector<uint8_t> &bytes_out, size_t bytes_to_reserve_for_header) 
 {
 sosscli::internal::ProtobufIndexBuilder::generate_query_spec(T::default_instance(), filter, bytes_out, bytes_to_reserve_for_header);
 }
};

}

#endif