1#!/usr/bin/env python
2
3import gobject
4import dbus
5import dbus.service
6import dbus.mainloop.glib
7from obmc.dbuslib.bindings import get_dbus, DbusProperties, DbusObjectManager
8
9DBUS_NAME = 'org.openbmc.control.Chassis'
10OBJ_NAME = '/org/openbmc/control/chassis0'
11CONTROL_INTF = 'org.openbmc.Control'
12
13MACHINE_ID = '/etc/machine-id'
14
15POWER_OFF = 0
16POWER_ON = 1
17
18BOOTED = 100
19
20
21class ChassisControlObject(DbusProperties, DbusObjectManager):
22    def getUuid(self):
23        uuid = ""
24        try:
25            with open(MACHINE_ID) as f:
26                data = f.readline().rstrip('\n')
27                if (len(data) == 32):
28                    uuid = data
29                else:
30                    print "ERROR:  UUID is not formatted correctly: " + data
31        except:
32            print "ERROR: Unable to open uuid file: " + MACHINE_ID
33
34        return uuid
35
36    def __init__(self, bus, name):
37        super(ChassisControlObject, self).__init__(
38            conn=bus,
39            object_path=name)
40        ## load utilized objects
41        self.dbus_objects = {
42            'power_control': {
43                'bus_name': 'org.openbmc.control.Power',
44                'object_name': '/org/openbmc/control/power0',
45                'interface_name': 'org.openbmc.control.Power'
46            },
47            'host_services': {
48                'bus_name': 'org.openbmc.HostServices',
49                'object_name': '/org/openbmc/HostServices',
50                'interface_name': 'org.openbmc.HostServices'
51            },
52            'settings': {
53                'bus_name': 'org.openbmc.settings.Host',
54                'object_name': '/org/openbmc/settings/host0',
55                'interface_name': 'org.freedesktop.DBus.Properties'
56            },
57            'systemd': {
58                'bus_name': 'org.freedesktop.systemd1',
59                'object_name': '/org/freedesktop/systemd1',
60                'interface_name': 'org.freedesktop.systemd1.Manager'
61            },
62        }
63
64        # uuid
65        self.Set(DBUS_NAME, "uuid", self.getUuid())
66        self.Set(DBUS_NAME, "reboot", 0)
67
68        bus.add_signal_receiver(self.power_button_signal_handler,
69                                dbus_interface="org.openbmc.Button",
70                                signal_name="Released",
71                                path="/org/openbmc/buttons/power0")
72        bus.add_signal_receiver(self.long_power_button_signal_handler,
73                                dbus_interface="org.openbmc.Button",
74                                signal_name="PressedLong",
75                                path="/org/openbmc/buttons/power0")
76        bus.add_signal_receiver(self.softreset_button_signal_handler,
77                                dbus_interface="org.openbmc.Button",
78                                signal_name="Released",
79                                path="/org/openbmc/buttons/reset0")
80
81        bus.add_signal_receiver(self.host_watchdog_signal_handler,
82                                dbus_interface="org.openbmc.Watchdog",
83                                signal_name="WatchdogError")
84
85        bus.add_signal_receiver(self.SystemStateHandler,
86                                signal_name="GotoSystemState")
87
88    def getInterface(self, name):
89        o = self.dbus_objects[name]
90        obj = bus.get_object(o['bus_name'], o['object_name'], introspect=False)
91        return dbus.Interface(obj, o['interface_name'])
92
93    @dbus.service.method(DBUS_NAME,
94                         in_signature='', out_signature='')
95    def powerOn(self):
96        print "Turn on power and boot"
97        self.Set(DBUS_NAME, "reboot", 0)
98        intf = self.getInterface('systemd')
99        f = getattr(intf, 'StartUnit')
100        f.call_async('obmc-host-start@0.target', 'replace')
101        return None
102
103    @dbus.service.method(DBUS_NAME,
104                         in_signature='', out_signature='')
105    def powerOff(self):
106        print "Turn off power"
107        intf = self.getInterface('systemd')
108        f = getattr(intf, 'StartUnit')
109        f.call_async('obmc-chassis-hard-poweroff@0.target', 'replace')
110        return None
111
112    @dbus.service.method(DBUS_NAME,
113                         in_signature='', out_signature='')
114    def softPowerOff(self):
115        print "Soft off power"
116        intf = self.getInterface('systemd')
117        f = getattr(intf, 'StartUnit')
118        f.call_async('obmc-host-shutdown@0.target', 'replace')
119        return None
120
121    @dbus.service.method(DBUS_NAME,
122                         in_signature='', out_signature='')
123    def reboot(self):
124        print "Rebooting"
125        if self.getPowerState() == POWER_OFF:
126            self.powerOn()
127        else:
128            self.Set(DBUS_NAME, "reboot", 1)
129            self.powerOff()
130        return None
131
132    @dbus.service.method(DBUS_NAME,
133                         in_signature='', out_signature='')
134    def softReboot(self):
135        print "Soft Rebooting"
136        if self.getPowerState() == POWER_OFF:
137            self.powerOn()
138        else:
139            self.Set(DBUS_NAME, "reboot", 1)
140            self.softPowerOff()
141        return None
142
143    @dbus.service.method(DBUS_NAME,
144                         in_signature='', out_signature='')
145    def quiesce(self):
146        intf = self.getInterface('systemd')
147        f = getattr(intf, 'StartUnit')
148        f.call_async('obmc-host-quiesce@0.target', 'replace')
149        return None
150
151    @dbus.service.method(DBUS_NAME,
152                         in_signature='', out_signature='i')
153    def getPowerState(self):
154        intf = self.getInterface('power_control')
155        return intf.getPowerState()
156
157    ## Signal handler
158
159    def SystemStateHandler(self, state_name):
160        if state_name in ["HOST_POWERED_OFF", "HOST_POWERED_ON"]:
161            intf = self.getInterface('settings')
162            intf.Set("org.openbmc.settings.Host", "system_state", state_name)
163
164        if (state_name == "HOST_POWERED_OFF" and self.Get(DBUS_NAME,
165                                                          "reboot") == 1):
166            self.powerOn()
167
168    def power_button_signal_handler(self):
169        # toggle power, power-on / soft-power-off
170        state = self.getPowerState()
171        if state == POWER_OFF:
172            self.powerOn()
173        elif state == POWER_ON:
174            self.softPowerOff()
175
176    def long_power_button_signal_handler(self):
177        print "Long-press button, hard power off"
178        self.powerOff()
179
180    def softreset_button_signal_handler(self):
181        self.softReboot()
182
183    def host_watchdog_signal_handler(self):
184        print "Watchdog Error, Going to quiesce"
185        self.quiesce()
186
187
188if __name__ == '__main__':
189    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
190
191    bus = get_dbus()
192    obj = ChassisControlObject(bus, OBJ_NAME)
193    mainloop = gobject.MainLoop()
194
195    obj.unmask_signals()
196    name = dbus.service.BusName(DBUS_NAME, bus)
197
198    print "Running ChassisControlService"
199    mainloop.run()
200
201# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
202