9f3061ade8
This reverts commit31d439213c. Fixes #894. Conflicts: streaming/stream_manager.cc (may have undone part of63a5aa6122)
108 lines
3.5 KiB
C++
108 lines
3.5 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 Cloudius Systems.
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* Copyright 2015 Cloudius Systems.
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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 "core/shared_ptr.hh"
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#include "core/distributed.hh"
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#include "utils/UUID.hh"
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#include <seastar/core/semaphore.hh>
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#include <map>
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namespace streaming {
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class stream_result_future;
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/**
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* StreamManager manages currently running {@link StreamResultFuture}s and provides status of all operation invoked.
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*
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* All stream operation should be created through this class to track streaming status and progress.
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*/
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class stream_manager {
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using UUID = utils::UUID;
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/*
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* Currently running streams. Removed after completion/failure.
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* We manage them in two different maps to distinguish plan from initiated ones to
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* receiving ones withing the same JVM.
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*/
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private:
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std::unordered_map<UUID, shared_ptr<stream_result_future>> _initiated_streams;
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std::unordered_map<UUID, shared_ptr<stream_result_future>> _receiving_streams;
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semaphore _mutation_send_limiter{256};
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public:
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semaphore& mutation_send_limiter() { return _mutation_send_limiter; }
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void register_sending(shared_ptr<stream_result_future> result);
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void register_receiving(shared_ptr<stream_result_future> result);
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shared_ptr<stream_result_future> get_sending_stream(UUID plan_id);
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shared_ptr<stream_result_future> get_receiving_stream(UUID plan_id);
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std::vector<shared_ptr<stream_result_future>> get_all_streams() const ;
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const std::unordered_map<UUID, shared_ptr<stream_result_future>>& get_initiated_streams() const {
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return _initiated_streams;
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}
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const std::unordered_map<UUID, shared_ptr<stream_result_future>>& get_receiving_streams() const {
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return _receiving_streams;
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}
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void remove_stream(UUID plan_id);
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void show_streams();
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future<> stop() {
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return make_ready_future<>();
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}
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};
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extern distributed<stream_manager> _the_stream_manager;
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inline distributed<stream_manager>& get_stream_manager() {
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return _the_stream_manager;
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}
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inline stream_manager& get_local_stream_manager() {
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return _the_stream_manager.local();
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}
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} // namespace streaming
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