1 /**
2  * Copyright © 2017 IBM Corporation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #include <phosphor-logging/log.hpp>
17 #include <sdbusplus/bus.hpp>
18 #include <systemd/sd-daemon.h>
19 #include "argument.hpp"
20 #include "event.hpp"
21 #include "fan.hpp"
22 #include "fan_defs.hpp"
23 #include "trust_manager.hpp"
24 
25 using namespace phosphor::fan::monitor;
26 using namespace phosphor::logging;
27 
28 int main(int argc, char* argv[])
29 {
30     auto bus = sdbusplus::bus::new_default();
31     sd_event* events = nullptr;
32     std::vector<std::unique_ptr<Fan>> fans;
33     phosphor::fan::util::ArgumentParser args(argc, argv);
34 
35     if (argc != 2)
36     {
37         args.usage(argv);
38         exit(-1);
39     }
40 
41     Mode mode;
42     if (args["init"] == "true")
43     {
44         mode = Mode::init;
45     }
46     else if (args["monitor"] == "true")
47     {
48         mode = Mode::monitor;
49     }
50     else
51     {
52         args.usage(argv);
53         exit(-1);
54     }
55 
56     auto r = sd_event_default(&events);
57     if (r < 0)
58     {
59         log<level::ERR>("Failed call to sd_event_default()",
60                         entry("ERROR=%s", strerror(-r)));
61         return -1;
62     }
63 
64     std::unique_ptr<phosphor::fan::trust::Manager> trust =
65             std::make_unique<phosphor::fan::trust::Manager>(trustGroups);
66 
67     phosphor::fan::event::EventPtr eventPtr{events};
68 
69     //Attach the event object to the bus object so we can
70     //handle both sd_events (for the timers) and dbus signals.
71     bus.attach_event(eventPtr.get(), SD_EVENT_PRIORITY_NORMAL);
72 
73     for (const auto& fanDef : fanDefinitions)
74     {
75         // Check if a condition exists on the fan
76         auto condition = std::get<conditionField>(fanDef);
77         if (condition)
78         {
79             // Condition exists, skip adding fan if it fails
80             if (!(*condition)(bus))
81             {
82                 continue;
83             }
84         }
85         fans.emplace_back(std::make_unique<Fan>(
86                 mode, bus, eventPtr, trust, fanDef));
87     }
88 
89     if (mode == Mode::init)
90     {
91         // Fans were initialized to be functional, exit
92         return 0;
93     }
94     else
95     {
96         r = sd_event_loop(eventPtr.get());
97         if (r < 0)
98         {
99             log<level::ERR>("Failed call to sd_event_loop",
100                             entry("ERROR=%s", strerror(-r)));
101         }
102     }
103 
104     return -1;
105 }
106