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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
#pragma once
#include "basic_state.hpp"
#include "deactivating_state.hpp"
struct ActiveState : public BasicStateT<ActiveState>
{
static std::string_view stateName()
{
return "ActiveState";
}
ActiveState(interfaces::MountPointStateMachine& machine,
std::unique_ptr<resource::Process> process,
std::unique_ptr<resource::Gadget> gadget) :
BasicStateT(machine),
process(std::move(process)), gadget(std::move(gadget)){};
virtual std::unique_ptr<BasicState> onEnter()
{
handler = [this](const boost::system::error_code& ec) {
if (ec)
{
return;
}
auto now = std::chrono::steady_clock::now();
auto stats = UsbGadget::getStats(std::string(machine.getName()));
if (stats && (*stats != lastStats))
{
lastStats = std::move(*stats);
lastAccess = now;
}
auto timeSinceLastAccess =
std::chrono::duration_cast<std::chrono::seconds>(now -
lastAccess);
if (timeSinceLastAccess >= Configuration::inactivityTimeout)
{
LogMsg(Logger::Info, machine.getName(),
" Inactivity timer expired (",
Configuration::inactivityTimeout.count(),
"s) - Unmounting");
// unmount media & stop retriggering timer
boost::asio::spawn(
machine.getIoc(),
[& machine = machine](boost::asio::yield_context yield) {
machine.emitUnmountEvent();
});
return;
}
else
{
machine.getConfig().remainingInactivityTimeout =
Configuration::inactivityTimeout - timeSinceLastAccess;
}
timer.expires_from_now(std::chrono::seconds(1));
timer.async_wait(handler);
};
timer.expires_from_now(std::chrono::seconds(1));
timer.async_wait(handler);
return nullptr;
}
std::unique_ptr<BasicState> handleEvent(UdevStateChangeEvent event)
{
return std::make_unique<DeactivatingState>(
machine, std::move(process), std::move(gadget), std::move(event));
}
std::unique_ptr<BasicState> handleEvent(SubprocessStoppedEvent event)
{
return std::make_unique<DeactivatingState>(
machine, std::move(process), std::move(gadget), std::move(event));
}
std::unique_ptr<BasicState> handleEvent(UnmountEvent event)
{
return std::make_unique<DeactivatingState>(machine, std::move(process),
std::move(gadget));
}
template <class AnyEvent>
std::unique_ptr<BasicState> handleEvent(AnyEvent event)
{
LogMsg(Logger::Error, "Invalid event: ", event.eventName);
return nullptr;
}
private:
boost::asio::steady_timer timer{machine.getIoc()};
std::unique_ptr<resource::Process> process;
std::unique_ptr<resource::Gadget> gadget;
std::function<void(const boost::system::error_code&)> handler;
std::chrono::time_point<std::chrono::steady_clock> lastAccess;
std::string lastStats;
};
|
