1 /** @file
2 
3   Implementation of various round robin nexthop selections strategies.
4 
5   @section license License
6 
7   Licensed to the Apache Software Foundation (ASF) under one
8   or more contributor license agreements.  See the NOTICE file
9   distributed with this work for additional information
10   regarding copyright ownership.  The ASF licenses this file
11   to you under the Apache License, Version 2.0 (the
12   "License"); you may not use this file except in compliance
13   with the License.  You may obtain a copy of the License at
14 
15       http://www.apache.org/licenses/LICENSE-2.0
16 
17   Unless required by applicable law or agreed to in writing, software
18   distributed under the License is distributed on an "AS IS" BASIS,
19   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20   See the License for the specific language governing permissions and
21   limitations under the License.
22  */
23 
24 #pragma once
25 
26 #include <mutex>
27 #include "NextHopSelectionStrategy.h"
28 
29 class NextHopRoundRobin : public NextHopSelectionStrategy
30 {
31   std::mutex _mutex;
32   uint32_t latched_index = 0;
33 
34 public:
35   NextHopRoundRobin() = delete;
NextHopRoundRobin(const std::string_view & name,const NHPolicyType & policy)36   NextHopRoundRobin(const std::string_view &name, const NHPolicyType &policy) : NextHopSelectionStrategy(name, policy) {}
37   ~NextHopRoundRobin();
38   bool
Init(const YAML::Node & n)39   Init(const YAML::Node &n)
40   {
41     return NextHopSelectionStrategy::Init(n);
42   }
43   void findNextHop(TSHttpTxn txnp, void *ih = nullptr, time_t now = 0) override;
44 };
45