client_session.hpp

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// Copyright 2009-present MongoDB, 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
 
#include <mongocxx/options/client_session-fwd.hpp> // IWYU pragma: export
 
//
 
#include <mongocxx/v1/client_session.hpp> // IWYU pragma: export
 
#include <utility>
 
#include <mongocxx/client_session-fwd.hpp> // IWYU pragma: keep: backward compatibility, to be removed.
 
#include <bsoncxx/stdx/optional.hpp>
#include <bsoncxx/types.hpp>
 
#include <mongocxx/options/transaction.hpp>
 
#include <mongocxx/config/prelude.hpp>
 
namespace mongocxx {
namespace v_noabi {
namespace options {

class client_session {
   public:
    client_session() = default;

    /* explicit(false) */ client_session(v1::client_session::options const& opts)
        : _causal_consistency{opts.causal_consistency()},
          _snapshot{opts.snapshot()},
          _default_transaction_opts{opts.default_transaction_opts()} {
        if (auto const st = opts.snapshot_time()) {
            _snapshot_time = bsoncxx::v_noabi::from_v1(*st);
        }
    }

    explicit operator v1::client_session::options() const {
        using mongocxx::v_noabi::to_v1;
 
        v1::client_session::options ret;
 
        if (_causal_consistency) {
            ret.causal_consistency(*_causal_consistency);
        }
 
        if (_snapshot) {
            ret.snapshot(*_snapshot);
        }
 
        if (_snapshot_time) {
            ret.snapshot_time(bsoncxx::v_noabi::to_v1(*_snapshot_time));
        }
 
        if (_default_transaction_opts) {
            ret.default_transaction_opts(to_v1(*_default_transaction_opts));
        }
 
        return ret;
    }

    client_session& causal_consistency(bool causal_consistency) noexcept {
        _causal_consistency = causal_consistency;
        return *this;
    }

    bool causal_consistency() const noexcept {
        return _causal_consistency.value_or(true);
    }

    client_session& snapshot(bool enable_snapshot_reads) noexcept {
        _snapshot = enable_snapshot_reads;
        return *this;
    }

    bool snapshot() const noexcept {
        return _snapshot.value_or(false);
    }

    client_session& snapshot_time(bsoncxx::v_noabi::types::b_timestamp snapshot_time) {
        _snapshot_time = snapshot_time;
        return *this;
    }

    bsoncxx::v_noabi::stdx::optional<bsoncxx::v_noabi::types::b_timestamp> const& snapshot_time() const {
        return _snapshot_time;
    }

    client_session& default_transaction_opts(transaction default_transaction_opts) {
        _default_transaction_opts = std::move(default_transaction_opts);
        return *this;
    }

    bsoncxx::v_noabi::stdx::optional<transaction> const& default_transaction_opts() const {
        return _default_transaction_opts;
    }
 
   private:
    bsoncxx::v_noabi::stdx::optional<bool> _causal_consistency;
    bsoncxx::v_noabi::stdx::optional<bool> _snapshot;
    bsoncxx::v_noabi::stdx::optional<bsoncxx::v_noabi::types::b_timestamp> _snapshot_time;
    bsoncxx::v_noabi::stdx::optional<transaction> _default_transaction_opts;
};
 
} // namespace options
} // namespace v_noabi
} // namespace mongocxx
 
namespace mongocxx {
namespace v_noabi {

inline v_noabi::options::client_session from_v1(v1::client_session::options v) {
    return {v};
}

inline v1::client_session::options to_v1(v_noabi::options::client_session v) {
    return v1::client_session::options{v};
}
 
} // namespace v_noabi
} // namespace mongocxx
 
#include <mongocxx/config/postlude.hpp>