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779 lines
29 KiB
C++
779 lines
29 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#pragma once
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#include <boost/uuid/uuid_generators.hpp>
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#include <boost/interprocess/detail/atomic.hpp>
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#include <boost/smart_ptr/make_shared.hpp>
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#include <atomic>
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#include "levin_base.h"
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#include "misc_language.h"
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namespace epee
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{
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namespace levin
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{
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/************************************************************************/
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/* */
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/************************************************************************/
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template<class t_connection_context>
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class async_protocol_handler;
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template<class t_connection_context>
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class async_protocol_handler_config
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{
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typedef std::map<boost::uuids::uuid, async_protocol_handler<t_connection_context>* > connections_map;
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critical_section m_connects_lock;
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connections_map m_connects;
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void add_connection(async_protocol_handler<t_connection_context>* pc);
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void del_connection(async_protocol_handler<t_connection_context>* pc);
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async_protocol_handler<t_connection_context>* find_connection(boost::uuids::uuid connection_id) const;
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int find_and_lock_connection(boost::uuids::uuid connection_id, async_protocol_handler<t_connection_context>*& aph);
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friend class async_protocol_handler<t_connection_context>;
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public:
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typedef t_connection_context connection_context;
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levin_commands_handler<t_connection_context>* m_pcommands_handler;
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uint64_t m_max_packet_size;
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uint64_t m_invoke_timeout;
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int invoke(int command, const std::string& in_buff, std::string& buff_out, boost::uuids::uuid connection_id);
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template<class callback_t>
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int invoke_async(int command, const std::string& in_buff, boost::uuids::uuid connection_id, callback_t cb, size_t timeout = LEVIN_DEFAULT_TIMEOUT_PRECONFIGURED);
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int notify(int command, const std::string& in_buff, boost::uuids::uuid connection_id);
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bool close(boost::uuids::uuid connection_id);
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bool update_connection_context(const t_connection_context& contxt);
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bool request_callback(boost::uuids::uuid connection_id);
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template<class callback_t>
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bool foreach_connection(callback_t cb);
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size_t get_connections_count();
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async_protocol_handler_config():m_pcommands_handler(NULL), m_max_packet_size(LEVIN_DEFAULT_MAX_PACKET_SIZE)
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{}
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};
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/************************************************************************/
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/* */
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/************************************************************************/
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template<class t_connection_context = net_utils::connection_context_base>
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class async_protocol_handler
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{
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public:
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typedef t_connection_context connection_context;
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typedef async_protocol_handler_config<t_connection_context> config_type;
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enum stream_state
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{
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stream_state_head,
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stream_state_body
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};
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std::atomic<bool> m_deletion_initiated;
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std::atomic<bool> m_protocol_released;
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volatile uint32_t m_invoke_buf_ready;
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volatile int m_invoke_result_code;
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critical_section m_local_inv_buff_lock;
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std::string m_local_inv_buff;
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critical_section m_send_lock;
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critical_section m_call_lock;
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volatile uint32_t m_wait_count;
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volatile uint32_t m_close_called;
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bucket_head2 m_current_head;
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net_utils::i_service_endpoint* m_pservice_endpoint;
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config_type& m_config;
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t_connection_context& m_connection_context;
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std::string m_cache_in_buffer;
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stream_state m_state;
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int32_t m_oponent_protocol_ver;
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bool m_connection_initialized;
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struct invoke_response_handler_base
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{
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virtual bool handle(int res, const std::string& buff, connection_context& context)=0;
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virtual bool is_timer_started() const=0;
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virtual void cancel()=0;
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virtual bool cancel_timer()=0;
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};
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template <class callback_t>
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struct anvoke_handler: invoke_response_handler_base
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{
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anvoke_handler(const callback_t& cb, uint64_t timeout, async_protocol_handler& con, int command)
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:m_cb(cb), m_con(con), m_timer(con.m_pservice_endpoint->get_io_service()), m_timer_started(false),
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m_cancel_timer_called(false), m_timer_cancelled(false), m_command(command)
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{
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if(m_con.start_outer_call())
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{
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m_timer.expires_from_now(boost::posix_time::milliseconds(timeout));
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m_timer.async_wait([&con, command, cb](const boost::system::error_code& ec)
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{
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if(ec == boost::asio::error::operation_aborted)
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return;
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LOG_PRINT_CC(con.get_context_ref(), "Timeout on invoke operation happened, command: " << command, LOG_LEVEL_2);
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std::string fake;
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cb(LEVIN_ERROR_CONNECTION_TIMEDOUT, fake, con.get_context_ref());
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con.close();
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con.finish_outer_call();
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});
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m_timer_started = true;
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}
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}
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virtual ~anvoke_handler()
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{}
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callback_t m_cb;
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async_protocol_handler& m_con;
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boost::asio::deadline_timer m_timer;
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bool m_timer_started;
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bool m_cancel_timer_called;
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bool m_timer_cancelled;
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int m_command;
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virtual bool handle(int res, const std::string& buff, typename async_protocol_handler::connection_context& context)
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{
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if(!cancel_timer())
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return false;
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m_cb(res, buff, context);
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m_con.finish_outer_call();
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return true;
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}
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virtual bool is_timer_started() const
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{
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return m_timer_started;
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}
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virtual void cancel()
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{
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if(cancel_timer())
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{
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std::string fake;
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m_cb(LEVIN_ERROR_CONNECTION_DESTROYED, fake, m_con.get_context_ref());
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m_con.finish_outer_call();
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}
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}
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virtual bool cancel_timer()
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{
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if(!m_cancel_timer_called)
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{
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m_cancel_timer_called = true;
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boost::system::error_code ignored_ec;
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m_timer_cancelled = 1 == m_timer.cancel(ignored_ec);
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}
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return m_timer_cancelled;
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}
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};
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critical_section m_invoke_response_handlers_lock;
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std::list<boost::shared_ptr<invoke_response_handler_base> > m_invoke_response_handlers;
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template<class callback_t>
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bool add_invoke_response_handler(callback_t cb, uint64_t timeout, async_protocol_handler& con, int command)
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{
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CRITICAL_REGION_LOCAL(m_invoke_response_handlers_lock);
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boost::shared_ptr<invoke_response_handler_base> handler(boost::make_shared<anvoke_handler<callback_t>>(cb, timeout, con, command));
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m_invoke_response_handlers.push_back(handler);
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return handler->is_timer_started();
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}
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template<class callback_t> friend struct anvoke_handler;
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public:
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async_protocol_handler(net_utils::i_service_endpoint* psnd_hndlr,
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config_type& config,
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t_connection_context& conn_context):
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m_current_head(bucket_head2()),
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m_pservice_endpoint(psnd_hndlr),
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m_config(config),
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m_connection_context(conn_context),
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m_state(stream_state_head)
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{
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m_close_called = 0;
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m_deletion_initiated = false;
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m_protocol_released = false;
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m_wait_count = 0;
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m_oponent_protocol_ver = 0;
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m_connection_initialized = false;
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}
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virtual ~async_protocol_handler()
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{
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m_deletion_initiated = true;
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if(m_connection_initialized)
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{
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m_config.del_connection(this);
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}
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for (size_t i = 0; i < 60 * 1000 / 100 && 0 != boost::interprocess::ipcdetail::atomic_read32(&m_wait_count); ++i)
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{
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misc_utils::sleep_no_w(100);
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}
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CHECK_AND_ASSERT_MES_NO_RET(0 == boost::interprocess::ipcdetail::atomic_read32(&m_wait_count), "Failed to wait for operation completion. m_wait_count = " << m_wait_count);
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LOG_PRINT_CC(m_connection_context, "~async_protocol_handler()", LOG_LEVEL_4);
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}
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bool start_outer_call()
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{
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LOG_PRINT_CC_L4(m_connection_context, "[levin_protocol] -->> start_outer_call");
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if(!m_pservice_endpoint->add_ref())
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{
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LOG_PRINT_CC_RED(m_connection_context, "[levin_protocol] -->> start_outer_call failed", LOG_LEVEL_4);
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return false;
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}
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boost::interprocess::ipcdetail::atomic_inc32(&m_wait_count);
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return true;
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}
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bool finish_outer_call()
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{
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LOG_PRINT_CC_L4(m_connection_context, "[levin_protocol] <<-- finish_outer_call");
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boost::interprocess::ipcdetail::atomic_dec32(&m_wait_count);
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m_pservice_endpoint->release();
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return true;
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}
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bool release_protocol()
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{
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decltype(m_invoke_response_handlers) local_invoke_response_handlers;
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CRITICAL_REGION_BEGIN(m_invoke_response_handlers_lock);
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local_invoke_response_handlers.swap(m_invoke_response_handlers);
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m_protocol_released = true;
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CRITICAL_REGION_END();
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// Never call callback inside critical section, that can cause deadlock. Callback can be called when
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// invoke_response_handler_base is cancelled
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std::for_each(local_invoke_response_handlers.begin(), local_invoke_response_handlers.end(), [](const boost::shared_ptr<invoke_response_handler_base>& pinv_resp_hndlr) {
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pinv_resp_hndlr->cancel();
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});
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return true;
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}
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bool close()
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{
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boost::interprocess::ipcdetail::atomic_inc32(&m_close_called);
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m_pservice_endpoint->close();
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return true;
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}
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void update_connection_context(const connection_context& contxt)
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{
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m_connection_context = contxt;
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}
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void request_callback()
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{
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misc_utils::auto_scope_leave_caller scope_exit_handler = misc_utils::create_scope_leave_handler(
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boost::bind(&async_protocol_handler::finish_outer_call, this));
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m_pservice_endpoint->request_callback();
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}
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void handle_qued_callback()
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{
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m_config.m_pcommands_handler->callback(m_connection_context);
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}
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virtual bool handle_recv(const void* ptr, size_t cb)
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{
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if(boost::interprocess::ipcdetail::atomic_read32(&m_close_called))
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return false; //closing connections
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if(!m_config.m_pcommands_handler)
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{
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LOG_ERROR_CC(m_connection_context, "Commands handler not set!");
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return false;
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}
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if(m_cache_in_buffer.size() + cb > m_config.m_max_packet_size)
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{
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LOG_ERROR_CC(m_connection_context, "Maximum packet size exceed!, m_max_packet_size = " << m_config.m_max_packet_size
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<< ", packet received " << m_cache_in_buffer.size() + cb
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<< ", connection will be closed.");
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return false;
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}
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m_cache_in_buffer.append((const char*)ptr, cb);
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bool is_continue = true;
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while(is_continue)
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{
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switch(m_state)
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{
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case stream_state_body:
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if(m_cache_in_buffer.size() < m_current_head.m_cb)
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{
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is_continue = false;
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break;
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}
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{
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std::string buff_to_invoke;
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if(m_cache_in_buffer.size() == m_current_head.m_cb)
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buff_to_invoke.swap(m_cache_in_buffer);
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else
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{
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buff_to_invoke.assign(m_cache_in_buffer, 0, (std::string::size_type)m_current_head.m_cb);
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m_cache_in_buffer.erase(0, (std::string::size_type)m_current_head.m_cb);
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}
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bool is_response = (m_oponent_protocol_ver == LEVIN_PROTOCOL_VER_1 && m_current_head.m_flags&LEVIN_PACKET_RESPONSE);
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LOG_PRINT_CC_L4(m_connection_context, "LEVIN_PACKET_RECIEVED. [len=" << m_current_head.m_cb
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<< ", flags" << m_current_head.m_flags
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<< ", r?=" << m_current_head.m_have_to_return_data
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<<", cmd = " << m_current_head.m_command
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<< ", v=" << m_current_head.m_protocol_version);
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if(is_response)
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{//response to some invoke
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epee::critical_region_t<decltype(m_invoke_response_handlers_lock)> invoke_response_handlers_guard(m_invoke_response_handlers_lock);
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if(!m_invoke_response_handlers.empty())
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{//async call scenario
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boost::shared_ptr<invoke_response_handler_base> response_handler = m_invoke_response_handlers.front();
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bool timer_cancelled = response_handler->cancel_timer();
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// Don't pop handler, to avoid destroying it
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if(timer_cancelled)
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m_invoke_response_handlers.pop_front();
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invoke_response_handlers_guard.unlock();
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if(timer_cancelled)
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response_handler->handle(m_current_head.m_command, buff_to_invoke, m_connection_context);
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}
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else
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{
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invoke_response_handlers_guard.unlock();
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//use sync call scenario
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if(!boost::interprocess::ipcdetail::atomic_read32(&m_wait_count) && !boost::interprocess::ipcdetail::atomic_read32(&m_close_called))
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{
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LOG_ERROR_CC(m_connection_context, "no active invoke when response came, wtf?");
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return false;
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}else
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{
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CRITICAL_REGION_BEGIN(m_local_inv_buff_lock);
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buff_to_invoke.swap(m_local_inv_buff);
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buff_to_invoke.clear();
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m_invoke_result_code = m_current_head.m_return_code;
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CRITICAL_REGION_END();
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boost::interprocess::ipcdetail::atomic_write32(&m_invoke_buf_ready, 1);
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}
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}
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}else
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{
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if(m_current_head.m_have_to_return_data)
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{
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std::string return_buff;
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m_current_head.m_return_code = m_config.m_pcommands_handler->invoke(
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m_current_head.m_command,
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buff_to_invoke,
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return_buff,
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m_connection_context);
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m_current_head.m_cb = return_buff.size();
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m_current_head.m_have_to_return_data = false;
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m_current_head.m_protocol_version = LEVIN_PROTOCOL_VER_1;
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m_current_head.m_flags = LEVIN_PACKET_RESPONSE;
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std::string send_buff((const char*)&m_current_head, sizeof(m_current_head));
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send_buff += return_buff;
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CRITICAL_REGION_BEGIN(m_send_lock);
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if(!m_pservice_endpoint->do_send(send_buff.data(), send_buff.size()))
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return false;
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CRITICAL_REGION_END();
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LOG_PRINT_CC_L4(m_connection_context, "LEVIN_PACKET_SENT. [len=" << m_current_head.m_cb
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<< ", flags" << m_current_head.m_flags
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<< ", r?=" << m_current_head.m_have_to_return_data
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<<", cmd = " << m_current_head.m_command
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<< ", ver=" << m_current_head.m_protocol_version);
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}
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else
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m_config.m_pcommands_handler->notify(m_current_head.m_command, buff_to_invoke, m_connection_context);
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}
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}
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m_state = stream_state_head;
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break;
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case stream_state_head:
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{
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if(m_cache_in_buffer.size() < sizeof(bucket_head2))
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{
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if(m_cache_in_buffer.size() >= sizeof(uint64_t) && *((uint64_t*)m_cache_in_buffer.data()) != LEVIN_SIGNATURE)
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{
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LOG_ERROR_CC(m_connection_context, "Signature mismatch, connection will be closed");
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return false;
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}
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is_continue = false;
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break;
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}
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bucket_head2* phead = (bucket_head2*)m_cache_in_buffer.data();
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if(LEVIN_SIGNATURE != phead->m_signature)
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{
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LOG_ERROR_CC(m_connection_context, "Signature mismatch, connection will be closed");
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return false;
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}
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m_current_head = *phead;
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m_cache_in_buffer.erase(0, sizeof(bucket_head2));
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m_state = stream_state_body;
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m_oponent_protocol_ver = m_current_head.m_protocol_version;
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if(m_current_head.m_cb > m_config.m_max_packet_size)
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{
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LOG_ERROR_CC(m_connection_context, "Maximum packet size exceed!, m_max_packet_size = " << m_config.m_max_packet_size
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<< ", packet header received " << m_current_head.m_cb
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<< ", connection will be closed.");
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return false;
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}
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}
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break;
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default:
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LOG_ERROR_CC(m_connection_context, "Undefined state in levin_server_impl::connection_handler, m_state=" << m_state);
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return false;
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}
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}
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return true;
|
|
}
|
|
|
|
bool after_init_connection()
|
|
{
|
|
if (!m_connection_initialized)
|
|
{
|
|
m_connection_initialized = true;
|
|
m_config.add_connection(this);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
template<class callback_t>
|
|
bool async_invoke(int command, const std::string& in_buff, callback_t cb, size_t timeout = LEVIN_DEFAULT_TIMEOUT_PRECONFIGURED)
|
|
{
|
|
misc_utils::auto_scope_leave_caller scope_exit_handler = misc_utils::create_scope_leave_handler(
|
|
boost::bind(&async_protocol_handler::finish_outer_call, this));
|
|
|
|
if(timeout == LEVIN_DEFAULT_TIMEOUT_PRECONFIGURED)
|
|
timeout = m_config.m_invoke_timeout;
|
|
|
|
int err_code = LEVIN_OK;
|
|
do
|
|
{
|
|
if(m_deletion_initiated)
|
|
{
|
|
err_code = LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
break;
|
|
}
|
|
|
|
CRITICAL_REGION_LOCAL(m_call_lock);
|
|
|
|
if(m_deletion_initiated)
|
|
{
|
|
err_code = LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
break;
|
|
}
|
|
|
|
bucket_head2 head = {0};
|
|
head.m_signature = LEVIN_SIGNATURE;
|
|
head.m_cb = in_buff.size();
|
|
head.m_have_to_return_data = true;
|
|
|
|
head.m_flags = LEVIN_PACKET_REQUEST;
|
|
head.m_command = command;
|
|
head.m_protocol_version = LEVIN_PROTOCOL_VER_1;
|
|
|
|
boost::interprocess::ipcdetail::atomic_write32(&m_invoke_buf_ready, 0);
|
|
CRITICAL_REGION_BEGIN(m_send_lock);
|
|
CRITICAL_REGION_LOCAL1(m_invoke_response_handlers_lock);
|
|
if(!m_pservice_endpoint->do_send(&head, sizeof(head)))
|
|
{
|
|
LOG_ERROR_CC(m_connection_context, "Failed to do_send");
|
|
err_code = LEVIN_ERROR_CONNECTION;
|
|
break;
|
|
}
|
|
|
|
if(!m_pservice_endpoint->do_send(in_buff.data(), (int)in_buff.size()))
|
|
{
|
|
LOG_ERROR_CC(m_connection_context, "Failed to do_send");
|
|
err_code = LEVIN_ERROR_CONNECTION;
|
|
break;
|
|
}
|
|
|
|
if(!add_invoke_response_handler(cb, timeout, *this, command))
|
|
{
|
|
err_code = LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
break;
|
|
}
|
|
CRITICAL_REGION_END();
|
|
} while (false);
|
|
|
|
if (LEVIN_OK != err_code)
|
|
{
|
|
std::string stub_buff;
|
|
// Never call callback inside critical section, that can cause deadlock
|
|
cb(err_code, stub_buff, m_connection_context);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int invoke(int command, const std::string& in_buff, std::string& buff_out)
|
|
{
|
|
misc_utils::auto_scope_leave_caller scope_exit_handler = misc_utils::create_scope_leave_handler(
|
|
boost::bind(&async_protocol_handler::finish_outer_call, this));
|
|
|
|
if(m_deletion_initiated)
|
|
return LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
|
|
CRITICAL_REGION_LOCAL(m_call_lock);
|
|
|
|
if(m_deletion_initiated)
|
|
return LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
|
|
bucket_head2 head = {0};
|
|
head.m_signature = LEVIN_SIGNATURE;
|
|
head.m_cb = in_buff.size();
|
|
head.m_have_to_return_data = true;
|
|
|
|
head.m_flags = LEVIN_PACKET_REQUEST;
|
|
head.m_command = command;
|
|
head.m_protocol_version = LEVIN_PROTOCOL_VER_1;
|
|
|
|
boost::interprocess::ipcdetail::atomic_write32(&m_invoke_buf_ready, 0);
|
|
CRITICAL_REGION_BEGIN(m_send_lock);
|
|
if(!m_pservice_endpoint->do_send(&head, sizeof(head)))
|
|
{
|
|
LOG_ERROR_CC(m_connection_context, "Failed to do_send");
|
|
return LEVIN_ERROR_CONNECTION;
|
|
}
|
|
|
|
if(!m_pservice_endpoint->do_send(in_buff.data(), (int)in_buff.size()))
|
|
{
|
|
LOG_ERROR_CC(m_connection_context, "Failed to do_send");
|
|
return LEVIN_ERROR_CONNECTION;
|
|
}
|
|
CRITICAL_REGION_END();
|
|
|
|
LOG_PRINT_CC_L4(m_connection_context, "LEVIN_PACKET_SENT. [len=" << head.m_cb
|
|
<< ", f=" << head.m_flags
|
|
<< ", r?=" << head.m_have_to_return_data
|
|
<< ", cmd = " << head.m_command
|
|
<< ", ver=" << head.m_protocol_version);
|
|
|
|
uint64_t ticks_start = misc_utils::get_tick_count();
|
|
|
|
while(!boost::interprocess::ipcdetail::atomic_read32(&m_invoke_buf_ready) && !m_deletion_initiated && !m_protocol_released)
|
|
{
|
|
if(misc_utils::get_tick_count() - ticks_start > m_config.m_invoke_timeout)
|
|
{
|
|
LOG_PRINT_CC_L2(m_connection_context, "invoke timeout (" << m_config.m_invoke_timeout << "), closing connection ");
|
|
close();
|
|
return LEVIN_ERROR_CONNECTION_TIMEDOUT;
|
|
}
|
|
if(!m_pservice_endpoint->call_run_once_service_io())
|
|
return LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
}
|
|
|
|
if(m_deletion_initiated || m_protocol_released)
|
|
return LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
|
|
CRITICAL_REGION_BEGIN(m_local_inv_buff_lock);
|
|
buff_out.swap(m_local_inv_buff);
|
|
m_local_inv_buff.clear();
|
|
CRITICAL_REGION_END();
|
|
|
|
return m_invoke_result_code;
|
|
}
|
|
|
|
int notify(int command, const std::string& in_buff)
|
|
{
|
|
misc_utils::auto_scope_leave_caller scope_exit_handler = misc_utils::create_scope_leave_handler(
|
|
boost::bind(&async_protocol_handler::finish_outer_call, this));
|
|
|
|
if(m_deletion_initiated)
|
|
return LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
|
|
CRITICAL_REGION_LOCAL(m_call_lock);
|
|
|
|
if(m_deletion_initiated)
|
|
return LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
|
|
bucket_head2 head = {0};
|
|
head.m_signature = LEVIN_SIGNATURE;
|
|
head.m_have_to_return_data = false;
|
|
head.m_cb = in_buff.size();
|
|
|
|
head.m_command = command;
|
|
head.m_protocol_version = LEVIN_PROTOCOL_VER_1;
|
|
head.m_flags = LEVIN_PACKET_REQUEST;
|
|
CRITICAL_REGION_BEGIN(m_send_lock);
|
|
if(!m_pservice_endpoint->do_send(&head, sizeof(head)))
|
|
{
|
|
LOG_ERROR_CC(m_connection_context, "Failed to do_send()");
|
|
return -1;
|
|
}
|
|
|
|
if(!m_pservice_endpoint->do_send(in_buff.data(), (int)in_buff.size()))
|
|
{
|
|
LOG_ERROR("Failed to do_send()");
|
|
return -1;
|
|
}
|
|
CRITICAL_REGION_END();
|
|
LOG_PRINT_CC_L4(m_connection_context, "LEVIN_PACKET_SENT. [len=" << head.m_cb <<
|
|
", f=" << head.m_flags <<
|
|
", r?=" << head.m_have_to_return_data <<
|
|
", cmd = " << head.m_command <<
|
|
", ver=" << head.m_protocol_version);
|
|
|
|
return 1;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
boost::uuids::uuid get_connection_id() {return m_connection_context.m_connection_id;}
|
|
//------------------------------------------------------------------------------------------
|
|
t_connection_context& get_context_ref() {return m_connection_context;}
|
|
};
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
void async_protocol_handler_config<t_connection_context>::del_connection(async_protocol_handler<t_connection_context>* pconn)
|
|
{
|
|
CRITICAL_REGION_BEGIN(m_connects_lock);
|
|
m_connects.erase(pconn->get_connection_id());
|
|
CRITICAL_REGION_END();
|
|
m_pcommands_handler->on_connection_close(pconn->m_connection_context);
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
void async_protocol_handler_config<t_connection_context>::add_connection(async_protocol_handler<t_connection_context>* pconn)
|
|
{
|
|
CRITICAL_REGION_BEGIN(m_connects_lock);
|
|
m_connects[pconn->get_connection_id()] = pconn;
|
|
CRITICAL_REGION_END();
|
|
m_pcommands_handler->on_connection_new(pconn->m_connection_context);
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
async_protocol_handler<t_connection_context>* async_protocol_handler_config<t_connection_context>::find_connection(boost::uuids::uuid connection_id) const
|
|
{
|
|
auto it = m_connects.find(connection_id);
|
|
return it == m_connects.end() ? 0 : it->second;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
int async_protocol_handler_config<t_connection_context>::find_and_lock_connection(boost::uuids::uuid connection_id, async_protocol_handler<t_connection_context>*& aph)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_connects_lock);
|
|
aph = find_connection(connection_id);
|
|
if(0 == aph)
|
|
return LEVIN_ERROR_CONNECTION_NOT_FOUND;
|
|
if(!aph->start_outer_call())
|
|
return LEVIN_ERROR_CONNECTION_DESTROYED;
|
|
return LEVIN_OK;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
int async_protocol_handler_config<t_connection_context>::invoke(int command, const std::string& in_buff, std::string& buff_out, boost::uuids::uuid connection_id)
|
|
{
|
|
async_protocol_handler<t_connection_context>* aph;
|
|
int r = find_and_lock_connection(connection_id, aph);
|
|
return LEVIN_OK == r ? aph->invoke(command, in_buff, buff_out) : r;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context> template<class callback_t>
|
|
int async_protocol_handler_config<t_connection_context>::invoke_async(int command, const std::string& in_buff, boost::uuids::uuid connection_id, callback_t cb, size_t timeout)
|
|
{
|
|
async_protocol_handler<t_connection_context>* aph;
|
|
int r = find_and_lock_connection(connection_id, aph);
|
|
return LEVIN_OK == r ? aph->async_invoke(command, in_buff, cb, timeout) : r;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context> template<class callback_t>
|
|
bool async_protocol_handler_config<t_connection_context>::foreach_connection(callback_t cb)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_connects_lock);
|
|
for(auto& c: m_connects)
|
|
{
|
|
async_protocol_handler<t_connection_context>* aph = c.second;
|
|
if(!cb(aph->get_context_ref()))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
size_t async_protocol_handler_config<t_connection_context>::get_connections_count()
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_connects_lock);
|
|
return m_connects.size();
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
int async_protocol_handler_config<t_connection_context>::notify(int command, const std::string& in_buff, boost::uuids::uuid connection_id)
|
|
{
|
|
async_protocol_handler<t_connection_context>* aph;
|
|
int r = find_and_lock_connection(connection_id, aph);
|
|
return LEVIN_OK == r ? aph->notify(command, in_buff) : r;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
bool async_protocol_handler_config<t_connection_context>::close(boost::uuids::uuid connection_id)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_connects_lock);
|
|
async_protocol_handler<t_connection_context>* aph = find_connection(connection_id);
|
|
return 0 != aph ? aph->close() : false;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
bool async_protocol_handler_config<t_connection_context>::update_connection_context(const t_connection_context& contxt)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_connects_lock);
|
|
async_protocol_handler<t_connection_context>* aph = find_connection(contxt.m_connection_id);
|
|
if(0 == aph)
|
|
return false;
|
|
aph->update_connection_context(contxt);
|
|
return true;
|
|
}
|
|
//------------------------------------------------------------------------------------------
|
|
template<class t_connection_context>
|
|
bool async_protocol_handler_config<t_connection_context>::request_callback(boost::uuids::uuid connection_id)
|
|
{
|
|
async_protocol_handler<t_connection_context>* aph;
|
|
int r = find_and_lock_connection(connection_id, aph);
|
|
if(LEVIN_OK == r)
|
|
{
|
|
aph->request_callback();
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|