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#!/usr/bin/python -u
import sys
import uuid
import gobject
import dbus
import dbus.service
import dbus.mainloop.glib
from obmc.dbuslib.bindings import get_dbus, DbusProperties, DbusObjectManager
DBUS_NAME = 'org.openbmc.control.Chassis'
OBJ_NAME = '/org/openbmc/control/chassis0'
CONTROL_INTF = 'org.openbmc.Control'
MACHINE_ID = '/etc/machine-id'
POWER_OFF = 0
POWER_ON = 1
BOOTED = 100
class ChassisControlObject(DbusProperties, DbusObjectManager):
def getUuid(self):
uuid = "";
try:
with open(MACHINE_ID) as f:
data = f.readline().rstrip('\n')
if (len(data) == 32):
uuid = data
else:
print "ERROR: UUID is not formatted correctly: " + data
except:
print "ERROR: Unable to open uuid file: " + MACHINE_ID
return uuid
def __init__(self, bus, name):
self.dbus_objects = {}
DbusProperties.__init__(self)
DbusObjectManager.__init__(self)
dbus.service.Object.__init__(self, bus, name)
## load utilized objects
self.dbus_objects = {
'power_control': {
'bus_name': 'org.openbmc.control.Power',
'object_name': '/org/openbmc/control/power0',
'interface_name': 'org.openbmc.control.Power'
},
'identify_led': {
'bus_name': 'org.openbmc.control.led',
'object_name': '/org/openbmc/control/led/identify',
'interface_name': 'org.openbmc.Led'
},
'watchdog': {
'bus_name': 'org.openbmc.watchdog.Host',
'object_name': '/org/openbmc/watchdog/host0',
'interface_name': 'org.openbmc.Watchdog'
},
'host_services': {
'bus_name': 'org.openbmc.HostServices',
'object_name': '/org/openbmc/HostServices',
'interface_name': 'org.openbmc.HostServices'
},
'settings': {
'bus_name': 'org.openbmc.settings.Host',
'object_name': '/org/openbmc/settings/host0',
'interface_name': 'org.freedesktop.DBus.Properties'
},
'host_control': {
'bus_name': 'org.openbmc.control.Host',
'object_name': '/org/openbmc/control/host0',
'interface_name': 'org.openbmc.control.Host'
},
}
# uuid
self.Set(DBUS_NAME, "uuid", self.getUuid())
self.Set(DBUS_NAME, "reboot", 0)
bus.add_signal_receiver(self.power_button_signal_handler,
dbus_interface="org.openbmc.Button",
signal_name="Released",
path="/org/openbmc/buttons/power0")
bus.add_signal_receiver(self.long_power_button_signal_handler,
dbus_interface="org.openbmc.Button",
signal_name="PressedLong",
path="/org/openbmc/buttons/power0")
bus.add_signal_receiver(self.softreset_button_signal_handler,
dbus_interface="org.openbmc.Button",
signal_name="Released",
path="/org/openbmc/buttons/reset0")
bus.add_signal_receiver(self.host_watchdog_signal_handler,
dbus_interface="org.openbmc.Watchdog",
signal_name="WatchdogError")
bus.add_signal_receiver(self.emergency_shutdown_signal_handler,
dbus_interface="org.openbmc.SensorThresholds",
signal_name="Emergency")
bus.add_signal_receiver(self.SystemStateHandler,
signal_name="GotoSystemState")
def getInterface(self, name):
o = self.dbus_objects[name]
obj = bus.get_object(o['bus_name'], o['object_name'], introspect=False)
return dbus.Interface(obj, o['interface_name'])
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='')
def setIdentify(self):
print "Turn on identify"
intf = self.getInterface('identify_led')
intf.setOn()
return None
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='')
def clearIdentify(self):
print "Turn on identify"
intf = self.getInterface('identify_led')
intf.setOff()
return None
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='')
def powerOn(self):
print "Turn on power and boot"
self.Set(DBUS_NAME, "reboot", 0)
if (self.getPowerState() == 0):
intf = self.getInterface('power_control')
intf.setPowerState(POWER_ON)
# Determine if debug_mode is set. If it is then we don't
# want to start the watchdog since debug mode
intfcontrol = self.getInterface('host_control')
intfproperties = dbus.Interface(intfcontrol,
"org.freedesktop.DBus.Properties")
debug_mode = intfproperties.Get('org.openbmc.control.Host',
'debug_mode')
if(not debug_mode):
intfwatchdog = self.getInterface('watchdog')
# Start watchdog with 30s timeout per the OpenPower Host IPMI Spec
#Once the host starts booting, it'll reset and refresh the timer
intfwatchdog.set(30000)
intfwatchdog.start()
else:
print "Debug mode is on, no watchdog"
return None
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='')
def powerOff(self):
print "Turn off power"
intfwatchdog = self.getInterface('watchdog')
intfwatchdog.stop()
intf = self.getInterface('power_control')
intf.setPowerState(POWER_OFF)
return None
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='')
def softPowerOff(self):
print "Soft off power"
intf = self.getInterface('host_services')
## host services will call power off when ready
intf.SoftPowerOff()
return None
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='')
def reboot(self):
print "Rebooting"
if self.getPowerState() == POWER_OFF:
self.powerOn();
else:
self.Set(DBUS_NAME, "reboot", 1)
self.powerOff()
return None
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='')
def softReboot(self):
print "Soft Rebooting"
if self.getPowerState() == POWER_OFF:
self.powerOn();
else:
self.Set(DBUS_NAME, "reboot", 1)
self.softPowerOff()
return None
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='i')
def getPowerState(self):
intf = self.getInterface('power_control')
return intf.getPowerState()
## Signal handler
def SystemStateHandler(self, state_name):
if (
state_name == "HOST_POWERED_OFF" or state_name == "HOST_POWERED_ON"):
intf = self.getInterface('settings')
intf.Set("org.openbmc.settings.Host", "system_state", state_name)
if (state_name == "HOST_POWERED_OFF" and self.Get(DBUS_NAME,
"reboot") == 1):
self.powerOn()
def power_button_signal_handler(self):
# toggle power, power-on / soft-power-off
state = self.getPowerState()
if state == POWER_OFF:
self.powerOn()
elif state == POWER_ON:
self.softPowerOff();
def long_power_button_signal_handler(self):
print "Long-press button, hard power off"
self.powerOff();
def softreset_button_signal_handler(self):
self.softReboot();
def host_watchdog_signal_handler(self):
print "Watchdog Error, Hard Rebooting"
self.Set(DBUS_NAME, "reboot", 1)
self.powerOff()
def emergency_shutdown_signal_handler(self, message):
print "Emergency Shutdown!"
# Log an event.
try:
# Exception happens or not, we need to power off.
obj = bus.get_object("org.openbmc.records.events",
"/org/openbmc/records/events",
introspect=False)
intf = dbus.Interface(obj, "org.openbmc.recordlog")
desc = message
sev = "critical error"
details = "Get emergency shutdown signal. Shutdown the host."
debug = dbus.ByteArray("")
intf.acceptBMCMessage(desc, sev, details, debug)
except Exception as e:
print "Emergency shutdown signal handler: log event error."
print e
self.powerOff()
if __name__ == '__main__':
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = get_dbus()
obj = ChassisControlObject(bus, OBJ_NAME)
mainloop = gobject.MainLoop()
obj.unmask_signals()
name = dbus.service.BusName(DBUS_NAME, bus)
print "Running ChassisControlService"
mainloop.run()
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