Files
scylladb/thrift/server.hh
Pavel Emelyanov f2992f4e32 thrift: Carry sharded<storage_service>& down to handler
The thrift_handler class' methods need storage service. This
patch makes sure this class has sharded storage service
reference on board.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2021-07-29 05:12:36 +03:00

151 lines
4.7 KiB
C++

/*
* Copyright (C) 2014-present ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef APPS_SEASTAR_THRIFT_SERVER_HH_
#define APPS_SEASTAR_THRIFT_SERVER_HH_
#include <seastar/core/seastar.hh>
#include <seastar/core/distributed.hh>
#include "cql3/query_processor.hh"
#include "timeout_config.hh"
#include "service/memory_limiter.hh"
#include <seastar/core/gate.hh>
#include <memory>
#include <cstdint>
#include <boost/intrusive/list.hpp>
#include "database_fwd.hh"
#include "utils/updateable_value.hh"
#include "service_permit.hh"
class thrift_server;
class thrift_stats;
#ifdef THRIFT_USES_BOOST
namespace thrift_std = boost;
#else
namespace thrift_std = std;
#endif
namespace cassandra {
static const sstring thrift_version = "20.1.0";
class CassandraCobSvIfFactory;
}
namespace apache { namespace thrift { namespace protocol {
class TProtocolFactory;
class TProtocol;
}}}
namespace apache { namespace thrift { namespace async {
class TAsyncProcessor;
class TAsyncProcessorFactory;
}}}
namespace apache { namespace thrift { namespace transport {
class TMemoryBuffer;
}}}
namespace auth {
class service;
}
namespace service { class storage_service; }
struct thrift_server_config {
::timeout_config timeout_config;
uint64_t max_request_size;
std::function<semaphore& ()> get_service_memory_limiter_semaphore;
};
class thrift_server {
class connection : public boost::intrusive::list_base_hook<> {
struct fake_transport;
thrift_server& _server;
connected_socket _fd;
input_stream<char> _read_buf;
output_stream<char> _write_buf;
temporary_buffer<char> _in_tmp;
thrift_std::shared_ptr<fake_transport> _transport;
thrift_std::shared_ptr<apache::thrift::transport::TMemoryBuffer> _input;
thrift_std::shared_ptr<apache::thrift::transport::TMemoryBuffer> _output;
thrift_std::shared_ptr<apache::thrift::protocol::TProtocol> _in_proto;
thrift_std::shared_ptr<apache::thrift::protocol::TProtocol> _out_proto;
thrift_std::shared_ptr<apache::thrift::async::TAsyncProcessor> _processor;
promise<> _processor_promise;
public:
connection(thrift_server& server, connected_socket&& fd, socket_address addr);
~connection();
connection(connection&&);
future<> process();
future<> read();
future<> write();
void shutdown();
private:
future<> process_one_request();
};
private:
std::vector<server_socket> _listeners;
std::unique_ptr<thrift_stats> _stats;
service_permit _current_permit = empty_service_permit();
thrift_std::shared_ptr<::cassandra::CassandraCobSvIfFactory> _handler_factory;
std::unique_ptr<apache::thrift::protocol::TProtocolFactory> _protocol_factory;
thrift_std::shared_ptr<apache::thrift::async::TAsyncProcessorFactory> _processor_factory;
uint64_t _total_connections = 0;
uint64_t _current_connections = 0;
uint64_t _requests_served = 0;
uint64_t _requests_serving = 0;
uint64_t _requests_blocked_memory = 0;
semaphore& _memory_available;
utils::updateable_value<uint32_t> _max_concurrent_requests;
size_t _requests_shed;
thrift_server_config _config;
boost::intrusive::list<connection> _connections_list;
seastar::gate _stop_gate;
public:
thrift_server(distributed<database>& db, distributed<cql3::query_processor>& qp, sharded<service::storage_service>& ss, auth::service&, service::memory_limiter& ml, thrift_server_config config);
~thrift_server();
future<> listen(socket_address addr, bool keepalive);
future<> stop();
void do_accepts(int which, bool keepalive, int num_attempts);
uint64_t total_connections() const;
uint64_t current_connections() const;
uint64_t requests_served() const;
uint64_t requests_serving() const;
size_t max_request_size() const;
const semaphore& memory_available() const;
uint64_t requests_blocked_memory() const;
uint64_t requests_shed() const;
private:
void maybe_retry_accept(int which, bool keepalive, std::exception_ptr ex);
};
#endif /* APPS_SEASTAR_THRIFT_SERVER_HH_ */