1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
// Copyright (C) 2012-2019,2021 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef AVALANCHE_SCEN_H
#define AVALANCHE_SCEN_H
#include <config.h>
#include <perfdhcp/abstract_scen.h>
namespace isc {
namespace perfdhcp {
// This class fixes an issue in older compilers
// that cannot handle enum class as key in std::unordered_map.
// See: https://stackoverflow.com/questions/18837857/cant-use-enum-class-as-unordered-map-key
struct EnumClassHash
{
template <typename T>
std::size_t operator()(T t) const
{
return static_cast<std::size_t>(t);
}
};
/// \brief Avalanche Scenario class.
///
/// This class is used to run the performance test where DHCP server
/// is first loaded with indicated buffer of Discover or Solicit messages
/// and then the class is waiting till receiving all required responses.
/// Full DORA and SARR message sequences are expected.
class AvalancheScen : public AbstractScen {
public:
/// \brief Default and the only constructor of AvalancheScen.
///
/// \param options reference to command options,
/// \param socket reference to a socket.
AvalancheScen(CommandOptions& options, BasePerfSocket &socket):
AbstractScen(options, socket),
socket_(socket),
total_resent_(0) {};
/// brief\ Run performance test.
///
/// Method runs whole performance test.
///
/// \return execution status.
int run() override;
protected:
// A reference to socket;
BasePerfSocket &socket_;
/// A map xchg type -> (a map of trans id -> retransmissions count.
std::unordered_map<ExchangeType, std::unordered_map<uint32_t, int>, EnumClassHash> retransmissions_;
/// A map xchg type -> (a map of trans id -> time of sending first packet.
std::unordered_map<ExchangeType, std::unordered_map<uint32_t, boost::posix_time::ptime>, EnumClassHash> start_times_;
/// Total number of resent packets.
int total_resent_;
/// \\brief Resend packets.
///
/// It resends packets for given exchange type that did not receive
/// a response yet.
///
/// \param xchg_type exchange type that should be looked for.
/// \return number of packets still waiting for resending.
int resendPackets(ExchangeType xchg_type);
};
}
}
#endif // AVALANCHE_SCEN_H
|
