db33607eb2
The manager is needed to get messaging service and database from. Actually, the database can be pushed though arguments in all the places, so effectively session only needs the messaging. However, the stream-task's need the manager badly and there's no other place to get it from other than the session. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Modified by ScyllaDB
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* Copyright (C) 2015-present ScyllaDB
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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 "gms/inet_address.hh"
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#include "streaming/stream_session.hh"
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#include "streaming/session_info.hh"
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#include <map>
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#include <algorithm>
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namespace streaming {
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/**
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* {@link StreamCoordinator} is a helper class that abstracts away maintaining multiple
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* StreamSession and ProgressInfo instances per peer.
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*
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* This class coordinates multiple SessionStreams per peer in both the outgoing StreamPlan context and on the
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* inbound StreamResultFuture context.
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*/
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class stream_coordinator {
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public:
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using inet_address = gms::inet_address;
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private:
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class host_streaming_data;
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std::map<inet_address, shared_ptr<stream_session>> _peer_sessions;
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bool _is_receiving;
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public:
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stream_coordinator(bool is_receiving = false)
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: _is_receiving(is_receiving) {
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}
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public:
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/**
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* @return true if any stream session is active
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*/
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bool has_active_sessions() const;
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std::vector<shared_ptr<stream_session>> get_all_stream_sessions() const;
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bool is_receiving() const;
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void connect_all_stream_sessions();
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std::set<inet_address> get_peers() const;
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public:
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shared_ptr<stream_session> get_or_create_session(stream_manager& mgr, inet_address peer) {
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auto& session = _peer_sessions[peer];
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if (!session) {
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session = make_shared<stream_session>(mgr, peer);
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}
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return session;
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}
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std::vector<session_info> get_all_session_info() const;
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std::vector<session_info> get_peer_session_info(inet_address peer) const;
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void abort_all_stream_sessions();
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};
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} // namespace streaming
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