IContentFilter.hpp

// Copyright 2021 Proyectos y Sistemas de Mantenimiento SL (eProsima).
//
// 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.

 
#ifndef FASTDDS_DDS_TOPIC__ICONTENTFILTER_HPP
#define FASTDDS_DDS_TOPIC__ICONTENTFILTER_HPP
 
#include <fastdds/fastdds_dll.hpp>
 
#include <fastdds/rtps/common/Guid.hpp>
#include <fastdds/rtps/common/SampleIdentity.hpp>
#include <fastdds/rtps/common/SerializedPayload.hpp>
#include <fastdds/rtps/common/WriteParams.hpp>
 
namespace eprosima {
namespace fastdds {
namespace dds {

struct IContentFilter
{
    virtual ~IContentFilter() = default;
 
    using SerializedPayload = eprosima::fastdds::rtps::SerializedPayload_t;
    using GUID_t = fastdds::rtps::GUID_t;

    struct FilterSampleInfo
    {
        using SampleIdentity = eprosima::fastdds::rtps::SampleIdentity;
 
        FilterSampleInfo() = default;
 
        explicit FilterSampleInfo(
                const rtps::WriteParams& wparams)
            : sample_identity(wparams.sample_identity())
            , related_sample_identity(wparams.related_sample_identity())
            , user_write_data(wparams.user_write_data())
        {
        }

        SampleIdentity sample_identity;
        SampleIdentity related_sample_identity;
        std::shared_ptr<fastdds::rtps::WriteParams::UserWriteData> user_write_data;
    };

    virtual bool evaluate(
            const SerializedPayload& payload,
            const FilterSampleInfo& sample_info,
            const GUID_t& reader_guid) const = 0;
};
 
} // namespace dds
} // namespace fastdds
} // namespace eprosima
 
#endif  // FASTDDS_DDS_TOPIC__ICONTENTFILTER_HPP