98fb2cf5ed
The templated provides an unary predicate for (shared) pointers that allows containers containing pointers to objects to be searched, not by pointer comparisons but by comparisons of the values that they point to. This allows std::find_if to be used with shared pointers in a similar manner that std::find is used with non-pointer objects.
110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
#pragma once
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/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2020-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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#include <maxscale/cppdefs.hh>
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#include <tr1/memory>
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#include <list>
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#include <string>
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#include <maxscale/buffer.hh>
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namespace maxscale
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{
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class SessionCommand;
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typedef std::tr1::shared_ptr<SessionCommand> SSessionCommand;
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typedef std::list<SSessionCommand> SessionCommandList;
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class SessionCommand
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{
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SessionCommand(const SessionCommand&);
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SessionCommand& operator=(const SessionCommand&);
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public:
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/**
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* @brief Mark reply as received
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*/
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void mark_reply_received();
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/**
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* @brief Check if the session command has received a reply
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* @return True if the reply is already received
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*/
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bool is_reply_received() const;
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/**
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* @brief Get the command type of the session command
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*
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* @return The type of the command
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*/
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uint8_t get_command() const;
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/**
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* @brief Get the position of this session command
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*
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* @return The position of the session command
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*/
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uint64_t get_position() const;
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/**
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* @brief Creates a deep copy of the internal buffer
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*
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* @return A deep copy of the internal buffer or NULL on error
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*/
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GWBUF* deep_copy_buffer();
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/**
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* @brief Create a new session command
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*
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* @param buffer The buffer containing the command. Note that the ownership
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* of @c buffer is transferred to this object.
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* @param id A unique position identifier used to track replies
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*/
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SessionCommand(GWBUF *buffer, uint64_t id);
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~SessionCommand();
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/**
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* @brief Debug function for printing session commands
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*
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* @return String representation of the object
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*/
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std::string to_string();
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/**
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* @brief Equality comparison
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*
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* @return True if @c rhs is equal
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*/
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bool eq(const SessionCommand& rhs) const;
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private:
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mxs::Buffer m_buffer; /**< The buffer containing the command */
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uint8_t m_command; /**< The command being executed */
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uint64_t m_pos; /**< Unique position identifier */
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bool m_reply_sent; /**< Whether the session command reply has been sent */
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};
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inline bool operator ==(const SessionCommand& lhs, const SessionCommand& rhs)
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{
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return lhs.eq(rhs);
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}
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inline bool operator !=(const SessionCommand& lhs, const SessionCommand& rhs)
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{
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return !lhs.eq(rhs);
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}
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}
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