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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/**
* Copyright © 2017 IBM Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "monitor.hpp"
#include <phosphor-logging/log.hpp>
namespace phosphor
{
namespace unit
{
namespace failure
{
using namespace phosphor::logging;
constexpr auto FAILED_STATE = "failed";
constexpr auto START_METHOD = "StartUnit";
constexpr auto STOP_METHOD = "StopUnit";
constexpr auto SYSTEMD_SERVICE = "org.freedesktop.systemd1";
constexpr auto SYSTEMD_OBJ_PATH = "/org/freedesktop/systemd1";
constexpr auto SYSTEMD_INTERFACE = "org.freedesktop.systemd1.Manager";
constexpr auto SYSTEMD_PROPERTY_INTERFACE = "org.freedesktop.DBus.Properties";
constexpr auto SYSTEMD_UNIT_INTERFACE = "org.freedesktop.systemd1.Unit";
void Monitor::analyze()
{
if (inFailedState(std::move(getSourceUnitPath())))
{
runTargetAction();
}
}
bool Monitor::inFailedState(const std::string&& path)
{
sdbusplus::message::variant<std::string> property;
auto method = bus.new_method_call(SYSTEMD_SERVICE, path.c_str(),
SYSTEMD_PROPERTY_INTERFACE, "Get");
method.append(SYSTEMD_UNIT_INTERFACE, "ActiveState");
auto reply = bus.call(method);
if (reply.is_method_error())
{
log<level::ERR>("Failed reading ActiveState DBus property",
entry("UNIT=%s", source.c_str()));
// TODO openbmc/openbmc#851 - Once available, throw returned error
throw std::runtime_error("Failed reading ActiveState DBus property");
}
reply.read(property);
auto value = sdbusplus::message::variant_ns::get<std::string>(property);
return (value == FAILED_STATE);
}
std::string Monitor::getSourceUnitPath()
{
sdbusplus::message::object_path path;
auto method = bus.new_method_call(SYSTEMD_SERVICE, SYSTEMD_OBJ_PATH,
SYSTEMD_INTERFACE, "GetUnit");
method.append(source);
auto reply = bus.call(method);
if (reply.is_method_error())
{
log<level::ERR>("Failed GetUnit DBus method call",
entry("UNIT=%s", source.c_str()));
// TODO openbmc/openbmc#851 - Once available, throw returned error
throw std::runtime_error("Failed GetUnit DBus method call");
}
reply.read(path);
return static_cast<std::string>(path);
}
void Monitor::runTargetAction()
{
// Start or stop the target unit
auto methodCall = (action == Action::start) ? START_METHOD : STOP_METHOD;
log<level::INFO>("The source unit is in failed state, "
"running target action",
entry("SOURCE=%s", source.c_str()),
entry("TARGET=%s", target.c_str()),
entry("ACTION=%s", methodCall));
auto method = this->bus.new_method_call(SYSTEMD_SERVICE, SYSTEMD_OBJ_PATH,
SYSTEMD_INTERFACE, methodCall);
method.append(target);
method.append("replace");
auto reply = bus.call(method);
if (reply.is_method_error())
{
log<level::ERR>("Failed to run action on the target unit",
entry("UNIT=%s", target.c_str()));
// TODO openbmc/openbmc#851 - Once available, throw returned error
throw std::runtime_error("Failed to run action on the target unit");
}
}
} // namespace failure
} // namespace unit
} // namespace phosphor
|
