Handle.hpp

//------------------------------------------------------------------------------
/*
    This file is part of clio: https://github.com/XRPLF/clio
    Copyright (c) 2023, the clio developers.
 
    Permission to use, copy, modify, and distribute this software for any
    purpose with or without fee is hereby granted, provided that the above
    copyright notice and this permission notice appear in all copies.
 
    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
 
#pragma once
 
#include "data/cassandra/Error.hpp"
#include "data/cassandra/Types.hpp"
#include "data/cassandra/impl/Batch.hpp"
#include "data/cassandra/impl/Cluster.hpp"
#include "data/cassandra/impl/Future.hpp"
#include "data/cassandra/impl/ManagedObject.hpp"
#include "data/cassandra/impl/Result.hpp"
#include "data/cassandra/impl/Session.hpp"
#include "data/cassandra/impl/Statement.hpp"
 
#include <cassandra.h>
 
#include <functional>
#include <string_view>
#include <vector>
 
namespace data::cassandra {
 
class Handle {
    impl::Cluster cluster_;
    impl::Session session_;
 
public:
    using ResultOrErrorType = ResultOrError;
    using MaybeErrorType = MaybeError;
    using FutureWithCallbackType = FutureWithCallback;
    using FutureType = Future;
    using StatementType = Statement;
    using PreparedStatementType = PreparedStatement;
    using ResultType = Result;
 
    explicit Handle(Settings clusterSettings = Settings::defaultSettings());
 
    explicit Handle(std::string_view contactPoints);
 
    ~Handle();
 
    Handle(Handle&&) = default;
 
    [[nodiscard]] FutureType
    asyncConnect() const;
 
    [[nodiscard]] MaybeErrorType
    connect() const;
 
    [[nodiscard]] FutureType
    asyncConnect(std::string_view keyspace) const;
 
    [[nodiscard]] MaybeErrorType
    connect(std::string_view keyspace) const;
 
    [[nodiscard]] FutureType
    asyncDisconnect() const;
 
    [[maybe_unused]] MaybeErrorType
    disconnect() const;
 
    [[nodiscard]] FutureType
    asyncReconnect(std::string_view keyspace) const;
 
    [[nodiscard]] MaybeErrorType
    reconnect(std::string_view keyspace) const;
 
    template <typename... Args>
    [[nodiscard]] FutureType
    asyncExecute(std::string_view query, Args&&... args) const
    {
        auto statement = StatementType{query, std::forward<Args>(args)...};
        return cass_session_execute(session_, statement);
    }
 
    template <typename... Args>
    [[maybe_unused]] ResultOrErrorType
    execute(std::string_view query, Args&&... args) const
    {
        return asyncExecute<Args...>(query, std::forward<Args>(args)...).get();
    }
 
    [[nodiscard]] std::vector<FutureType>
    asyncExecuteEach(std::vector<StatementType> const& statements) const;
 
    [[maybe_unused]] MaybeErrorType
    executeEach(std::vector<StatementType> const& statements) const;
 
    template <typename... Args>
    [[nodiscard]] FutureType
    asyncExecute(PreparedStatementType const& statement, Args&&... args) const
    {
        auto bound = statement.bind<Args...>(std::forward<Args>(args)...);
        return cass_session_execute(session_, bound);
    }
 
    template <typename... Args>
    [[maybe_unused]] ResultOrErrorType
    execute(PreparedStatementType const& statement, Args&&... args) const
    {
        return asyncExecute<Args...>(statement, std::forward<Args>(args)...).get();
    }
 
    [[nodiscard]] FutureType
    asyncExecute(StatementType const& statement) const;
 
    [[nodiscard]] FutureWithCallbackType
    asyncExecute(StatementType const& statement, std::function<void(ResultOrErrorType)>&& cb) const;
 
    [[maybe_unused]] ResultOrErrorType
    execute(StatementType const& statement) const;
 
    [[nodiscard]] FutureType
    asyncExecute(std::vector<StatementType> const& statements) const;
 
    [[maybe_unused]] MaybeErrorType
    execute(std::vector<StatementType> const& statements) const;
 
    [[nodiscard]] FutureWithCallbackType
    asyncExecute(std::vector<StatementType> const& statements, std::function<void(ResultOrErrorType)>&& cb) const;
 
    [[nodiscard]] PreparedStatementType
    prepare(std::string_view query) const;
};
 
template <typename... Types>
[[nodiscard]] impl::ResultExtractor<Types...>
extract(Handle::ResultType const& result)
{
    return {result};
}
 
}  // namespace data::cassandra