124 lines
4.0 KiB
C++
124 lines
4.0 KiB
C++
/*
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* Copyright (C) 2019 pengjian.uestc @ gmail.com
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "redis/options.hh"
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#include "redis/protocol_parser.hh"
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#include "redis/query_processor.hh"
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#include "redis/reply.hh"
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#include "redis/request.hh"
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#include "redis/stats.hh"
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#include "auth/authenticator.hh"
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#include "auth/service.hh"
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#include "cql3/values.hh"
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#include "service/client_state.hh"
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#include "service_permit.hh"
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#include "timeout_config.hh"
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#include "utils/estimated_histogram.hh"
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#include "utils/fragmented_temporary_buffer.hh"
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#include "generic_server.hh"
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#include <seastar/core/seastar.hh>
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#include <seastar/core/semaphore.hh>
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#include <seastar/core/sharded.hh>
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#include <seastar/core/execution_stage.hh>
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#include <seastar/net/tls.hh>
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#include <memory>
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db::consistency_level make_consistency_level(const sstring&);
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class redis_exception;
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namespace service {
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class storage_proxy;
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}
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namespace redis_transport {
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struct redis_server_config {
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::timeout_config _timeout_config;
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size_t _max_request_size;
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db::consistency_level _read_consistency_level;
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db::consistency_level _write_consistency_level;
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size_t _total_redis_db_count;
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};
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class redis_server : public generic_server::server {
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seastar::sharded<redis::query_processor>& _query_processor;
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redis_server_config _config;
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size_t _max_request_size;
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semaphore _memory_available;
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redis::stats _stats;
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auth::service& _auth_service;
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size_t _total_redis_db_count;
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public:
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redis_server(seastar::sharded<redis::query_processor>& qp, auth::service& auth_service, redis_server_config config);
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struct result {
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result(redis::redis_message&& m) : _data(make_foreign(std::make_unique<redis::redis_message>(std::move(m)))) {}
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foreign_ptr<std::unique_ptr<redis::redis_message>> _data;
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inline lw_shared_ptr<scattered_message<char>> make_message() {
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return _data->message();
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}
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};
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using response_type = result;
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private:
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class connection : public generic_server::connection {
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redis_server& _server;
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socket_address _server_addr;
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redis_protocol_parser _parser;
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redis::redis_options _options;
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using execution_stage_type = inheriting_concrete_execution_stage<
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future<redis_server::result>,
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redis_server::connection*,
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redis::request&&,
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redis::redis_options&,
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service_permit
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>;
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static thread_local execution_stage_type _process_request_stage;
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public:
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connection(redis_server& server, socket_address server_addr, connected_socket&& fd, socket_address addr);
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virtual ~connection();
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future<> process_request() override;
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void handle_error(future<>&& f) override;
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void write_reply(const redis_exception&);
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void write_reply(redis_server::result result);
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private:
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const ::timeout_config& timeout_config() { return _server.timeout_config(); }
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future<result> process_request_one(redis::request&& request, redis::redis_options&, service_permit permit);
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future<result> process_request_internal();
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};
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shared_ptr<generic_server::connection> make_connection(socket_address server_addr, connected_socket&& fd, socket_address addr);
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future<> unadvertise_connection(shared_ptr<generic_server::connection> conn) override;
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const ::timeout_config& timeout_config() { return _config._timeout_config; }
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};
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}
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