1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
#!/usr/bin/python -u
import sys
import subprocess
import gobject
import dbus
import dbus.service
import dbus.mainloop.glib
import os
import time
import obmc.dbuslib.propertycacher as PropertyCacher
from obmc.dbuslib.bindings import DbusProperties, DbusObjectManager, get_dbus
import obmc.enums
import obmc_system_config as System
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(DbusProperties,DbusObjectManager):
def __init__(self,bus,obj_name):
DbusProperties.__init__(self)
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 try_next_state(self):
current_state = self.Get(DBUS_NAME,"current_state")
if current_state not in System.EXIT_STATE_DEPEND:
return
if all(System.EXIT_STATE_DEPEND[current_state].values()):
print "All required objects started for "+current_state
self.gotoNextState()
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
if current_state not in System.EXIT_STATE_DEPEND:
return
if obj_path in System.EXIT_STATE_DEPEND[current_state]:
print "New object: "+obj_path+" ("+bus_name+")"
System.EXIT_STATE_DEPEND[current_state][obj_path] = 1
## check if all required objects are
# started to move to next state
self.try_next_state()
@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 = [obmc.enums.GPIO_DEV, gpio_num, gpio['direction']]
return r
if __name__ == '__main__':
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = get_dbus()
name = dbus.service.BusName(DBUS_NAME,bus)
obj = SystemManager(bus,OBJ_NAME)
mainloop = gobject.MainLoop()
print "Running SystemManager"
mainloop.run()
|
