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#!/usr/bin/python -u
import sys
import subprocess
import gobject
import dbus
import dbus.service
import dbus.mainloop.glib
import os
import time
import PropertyCacher
import Openbmc
if (len(sys.argv) < 2):
print "Usage: system_manager.py [system name]"
exit(1)
System = __import__(sys.argv[1])
import Openbmc
DBUS_NAME = 'org.openbmc.managers.System'
OBJ_NAME = '/org/openbmc/managers/System'
HEARTBEAT_CHECK_INTERVAL = 20000
STATE_START_TIMEOUT = 10
INTF_SENSOR = 'org.openbmc.SensorValue'
INTF_ITEM = 'org.openbmc.InventoryItem'
INTF_CONTROL = 'org.openbmc.Control'
class SystemManager(Openbmc.DbusProperties,Openbmc.DbusObjectManager):
def __init__(self,bus,obj_name):
Openbmc.DbusProperties.__init__(self)
Openbmc.DbusObjectManager.__init__(self)
dbus.service.Object.__init__(self,bus,obj_name)
bus.add_signal_receiver(self.NewObjectHandler,
signal_name = "InterfacesAdded", sender_keyword = 'bus_name')
bus.add_signal_receiver(self.SystemStateHandler,signal_name = "GotoSystemState")
self.Set(DBUS_NAME,"current_state","")
self.system_states = {}
self.bus_name_lookup = {}
self.bin_path = os.path.dirname(os.path.realpath(sys.argv[0]))
for name in System.APPS.keys():
sys_state = System.APPS[name]['system_state']
if (self.system_states.has_key(sys_state) == False):
self.system_states[sys_state] = []
self.system_states[sys_state].append(name)
## replace symbolic path in ID_LOOKUP
for category in System.ID_LOOKUP:
for key in System.ID_LOOKUP[category]:
val = System.ID_LOOKUP[category][key]
new_val = val.replace("<inventory_root>",System.INVENTORY_ROOT)
System.ID_LOOKUP[category][key] = new_val
self.SystemStateHandler(System.SYSTEM_STATES[0])
if not os.path.exists(PropertyCacher.CACHE_PATH):
print "Creating cache directory: "+PropertyCacher.CACHE_PATH
os.makedirs(PropertyCacher.CACHE_PATH)
self.InterfacesAdded(obj_name,self.properties)
print "SystemManager Init Done"
def SystemStateHandler(self,state_name):
## clearing object started flags
current_state = self.Get(DBUS_NAME,"current_state")
try:
for obj_path in System.EXIT_STATE_DEPEND[current_state]:
System.EXIT_STATE_DEPEND[current_state][obj_path] = 0
except:
pass
print "Running System State: "+state_name
if (self.system_states.has_key(state_name)):
for name in self.system_states[state_name]:
self.start_process(name)
if (state_name == "BMC_INIT"):
## Add poll for heartbeat
gobject.timeout_add(HEARTBEAT_CHECK_INTERVAL, self.heartbeat_check)
try:
cb = System.ENTER_STATE_CALLBACK[state_name]
for methd in cb.keys():
obj = bus.get_object(cb[methd]['bus_name'],cb[methd]['obj_name'],introspect=False)
method = obj.get_dbus_method(methd,cb[methd]['interface_name'])
method()
except:
pass
self.Set(DBUS_NAME,"current_state",state_name)
def gotoNextState(self):
s = 0
current_state = self.Get(DBUS_NAME,"current_state")
for i in range(len(System.SYSTEM_STATES)):
if (System.SYSTEM_STATES[i] == current_state):
s = i+1
if (s == len(System.SYSTEM_STATES)):
print "ERROR SystemManager: No more system states"
else:
new_state_name = System.SYSTEM_STATES[s]
print "SystemManager Goto System State: "+new_state_name
self.SystemStateHandler(new_state_name)
@dbus.service.method(DBUS_NAME,
in_signature='', out_signature='s')
def getSystemState(self):
return self.Get(DBUS_NAME,"current_state")
def doObjectLookup(self,category,key):
bus_name = ""
obj_path = ""
intf_name = INTF_ITEM
try:
obj_path = System.ID_LOOKUP[category][key]
bus_name = self.bus_name_lookup[obj_path]
parts = obj_path.split('/')
if (parts[3] == 'sensors'):
intf_name = INTF_SENSOR
except Exception as e:
print "ERROR SystemManager: "+str(e)+" not found in lookup"
return [bus_name,obj_path,intf_name]
@dbus.service.method(DBUS_NAME,
in_signature='ss', out_signature='(sss)')
def getObjectFromId(self,category,key):
return self.doObjectLookup(category,key)
@dbus.service.method(DBUS_NAME,
in_signature='sy', out_signature='(sss)')
def getObjectFromByteId(self,category,key):
byte = int(key)
return self.doObjectLookup(category,byte)
# Get the FRU area names defined in ID_LOOKUP table given a fru_id.
# If serval areas are defined for a fru_id, the areas are returned
# together as a string with each area name seperated with ','.
# If no fru area defined in ID_LOOKUP, an empty string will be returned.
@dbus.service.method(DBUS_NAME,
in_signature='y', out_signature='s')
def getFRUArea(self,fru_id):
ret_str = ''
fru_id = '_' + str(fru_id)
area_list = [area for area in System.ID_LOOKUP['FRU_STR'].keys() \
if area.endswith(fru_id)]
for area in area_list:
ret_str = area + ',' + ret_str
# remove the last ','
return ret_str[:-1]
def start_process(self,name):
if (System.APPS[name]['start_process'] == True):
app = System.APPS[name]
process_name = self.bin_path+"/"+app['process_name']
cmdline = [ ]
cmdline.append(process_name)
if (app.has_key('args')):
for a in app['args']:
cmdline.append(a)
try:
print "Starting process: "+" ".join(cmdline)+": "+name
if (app['monitor_process'] == True):
app['popen'] = subprocess.Popen(cmdline)
else:
subprocess.Popen(cmdline)
except Exception as e:
## TODO: error
print "ERROR: starting process: "+" ".join(cmdline)
def heartbeat_check(self):
for name in System.APPS.keys():
app = System.APPS[name]
if (app['start_process'] == True and app.has_key('popen')):
## make sure process is still alive
p = app['popen']
p.poll()
if (p.returncode != None):
print "Process for "+name+" appears to be dead"
self.start_process(name)
return True
def NewObjectHandler(self, obj_path, iprops, bus_name = None):
current_state = self.Get(DBUS_NAME,"current_state")
if (self.bus_name_lookup.has_key(obj_path)):
if (self.bus_name_lookup[obj_path] == bus_name):
return
self.bus_name_lookup[obj_path] = bus_name
print "New object: "+obj_path+" ("+bus_name+")"
try:
if (System.EXIT_STATE_DEPEND[current_state].has_key(obj_path) == True):
System.EXIT_STATE_DEPEND[current_state][obj_path] = 1
## check if all required objects are started to move to next state
state = 1
for obj_path in System.EXIT_STATE_DEPEND[current_state]:
if (System.EXIT_STATE_DEPEND[current_state][obj_path] == 0):
state = 0
## all required objects have started so go to next state
if (state == 1):
print "All required objects started for "+current_state
self.gotoNextState()
except:
pass
@dbus.service.method(DBUS_NAME,
in_signature='s', out_signature='sis')
def gpioInit(self,name):
gpio_path = ''
gpio_num = -1
r = ['',gpio_num,'']
if (System.GPIO_CONFIG.has_key(name) == False):
# TODO: Error handling
print "ERROR: "+name+" not found in GPIO config table"
else:
gpio_num = -1
gpio = System.GPIO_CONFIG[name]
if (System.GPIO_CONFIG[name].has_key('gpio_num')):
gpio_num = gpio['gpio_num']
else:
if (System.GPIO_CONFIG[name].has_key('gpio_pin')):
gpio_num = System.convertGpio(gpio['gpio_pin'])
else:
print "ERROR: SystemManager - GPIO lookup failed for "+name
if (gpio_num != -1):
r = [Openbmc.GPIO_DEV, gpio_num, gpio['direction']]
return r
if __name__ == '__main__':
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = Openbmc.getDBus()
name = dbus.service.BusName(DBUS_NAME,bus)
obj = SystemManager(bus,OBJ_NAME)
mainloop = gobject.MainLoop()
print "Running SystemManager"
mainloop.run()
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