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92 lines
2.7 KiB
C++
92 lines
2.7 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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namespace streaming {
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namespace messages {
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/**
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* StreamMessage is an abstract base class that every messages in streaming protocol inherit.
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*
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* Every message carries message type({@link Type}) and streaming protocol version byte.
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*/
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class stream_message {
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public:
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enum class Type {
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PREPARE,
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FILE,
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RECEIVED,
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RETRY,
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COMPLETE,
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SESSION_FAILED,
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};
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Type type;
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int priority;
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stream_message() = default;
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stream_message(Type type_)
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: type(type_) {
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if (type == Type::PREPARE) {
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priority = 5;
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} else if (type == Type::FILE) {
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priority = 0;
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} else if (type == Type::RECEIVED) {
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priority = 4;
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} else if (type == Type::RETRY) {
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priority = 4;
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} else if (type == Type::COMPLETE) {
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priority = 1;
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} else if (type == Type::SESSION_FAILED) {
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priority = 5;
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}
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}
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/**
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* @return priority of this message. higher value, higher priority.
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*/
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int get_priority() {
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return priority;
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}
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};
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} // namespace messages
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} // namespace streaming
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