| #!/usr/bin/env python |
| |
| 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' |
| }, |
| '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' |
| }, |
| 'systemd': { |
| 'bus_name': 'org.freedesktop.systemd1', |
| 'object_name': '/org/freedesktop/systemd1', |
| 'interface_name': 'org.freedesktop.systemd1.Manager' |
| }, |
| } |
| |
| # 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) |
| intf = self.getInterface('systemd') |
| f = getattr(intf, 'StartUnit') |
| f.call_async('obmc-chassis-start@0.target', 'replace') |
| return None |
| |
| @dbus.service.method(DBUS_NAME, |
| in_signature='', out_signature='') |
| def powerOff(self): |
| print "Turn off power" |
| |
| intf = self.getInterface('systemd') |
| f = getattr(intf, 'StartUnit') |
| f.call_async('obmc-chassis-stop@0.target', 'replace') |
| 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() |
| |