1#!/usr/bin/python -u
2
3import sys
4import subprocess
5import gobject
6import dbus
7import dbus.service
8import dbus.mainloop.glib
9import os
10import obmc.dbuslib.propertycacher as PropertyCacher
11from obmc.dbuslib.bindings import DbusProperties, DbusObjectManager, get_dbus
12import obmc.enums
13import obmc_system_config as System
14import obmc.dbuslib.introspection
15import obmc.utils.misc
16import obmc.mapper.utils
17
18DBUS_NAME = 'org.openbmc.managers.System'
19OBJ_NAME = '/org/openbmc/managers/System'
20INTF_SENSOR = 'org.openbmc.SensorValue'
21INTF_ITEM = 'org.openbmc.InventoryItem'
22INTF_CONTROL = 'org.openbmc.Control'
23
24
25class SystemManager(DbusProperties, DbusObjectManager):
26    def __init__(self, bus, obj_name):
27        DbusProperties.__init__(self)
28        DbusObjectManager.__init__(self)
29        dbus.service.Object.__init__(self, bus, obj_name)
30        self.bus = bus
31
32        bus.add_signal_receiver(
33            self.NewObjectHandler,
34            signal_name="InterfacesAdded", sender_keyword='bus_name')
35        bus.add_signal_receiver(
36            self.SystemStateHandler, signal_name="GotoSystemState")
37
38        self.Set(DBUS_NAME, "current_state", "")
39        self.system_states = {}
40        self.bin_path = os.path.dirname(os.path.realpath(sys.argv[0]))
41
42        for name in System.APPS.keys():
43            sys_state = System.APPS[name]['system_state']
44            if sys_state not in self.system_states:
45                self.system_states[sys_state] = []
46            self.system_states[sys_state].append(name)
47
48        ## replace symbolic path in ID_LOOKUP
49        for category in System.ID_LOOKUP:
50            for key in System.ID_LOOKUP[category]:
51                val = System.ID_LOOKUP[category][key]
52                new_val = val.replace(
53                    "<inventory_root>", System.INVENTORY_ROOT)
54                System.ID_LOOKUP[category][key] = new_val
55
56        self.SystemStateHandler(System.SYSTEM_STATES[0])
57
58        print "SystemManager Init Done"
59
60    def SystemStateHandler(self, state_name):
61        print "Running System State: "+state_name
62        if state_name in self.system_states:
63            for name in self.system_states[state_name]:
64                self.start_process(name)
65
66        try:
67            cb = System.ENTER_STATE_CALLBACK[state_name]
68            for methd in cb.keys():
69                obj = bus.get_object(
70                    cb[methd]['bus_name'],
71                    cb[methd]['obj_name'],
72                    introspect=False)
73                method = obj.get_dbus_method(
74                    methd, cb[methd]['interface_name'])
75                method()
76        except:
77            pass
78
79        self.Set(DBUS_NAME, "current_state", state_name)
80
81        waitlist = System.EXIT_STATE_DEPEND.get(state_name, {}).keys()
82        if waitlist:
83            self.waiter = obmc.mapper.utils.Wait(
84                self.bus, waitlist,
85                callback=self.gotoNextState)
86
87    def gotoNextState(self):
88        s = 0
89        current_state = self.Get(DBUS_NAME, "current_state")
90        for i in range(len(System.SYSTEM_STATES)):
91            if (System.SYSTEM_STATES[i] == current_state):
92                s = i+1
93
94        if (s == len(System.SYSTEM_STATES)):
95            print "ERROR SystemManager: No more system states"
96        else:
97            new_state_name = System.SYSTEM_STATES[s]
98            print "SystemManager Goto System State: "+new_state_name
99            self.SystemStateHandler(new_state_name)
100
101    @dbus.service.method(DBUS_NAME, in_signature='', out_signature='s')
102    def getSystemState(self):
103        return self.Get(DBUS_NAME, "current_state")
104
105    def doObjectLookup(self, category, key):
106        obj_path = ""
107        intf_name = INTF_ITEM
108        try:
109            obj_path = System.ID_LOOKUP[category][key]
110            parts = obj_path.split('/')
111            if (parts[3] == 'sensors'):
112                intf_name = INTF_SENSOR
113        except Exception as e:
114            print "ERROR SystemManager: "+str(e)+" not found in lookup"
115
116        return [obj_path, intf_name]
117
118    @dbus.service.method(DBUS_NAME, in_signature='ss', out_signature='(ss)')
119    def getObjectFromId(self, category, key):
120        return self.doObjectLookup(category, key)
121
122    @dbus.service.method(DBUS_NAME, in_signature='sy', out_signature='(ss)')
123    def getObjectFromByteId(self, category, key):
124        byte = int(key)
125        return self.doObjectLookup(category, byte)
126
127    # Get the FRU area names defined in ID_LOOKUP table given a fru_id.
128    # If serval areas are defined for a fru_id, the areas are returned
129    # together as a string with each area name seperated with ','.
130    # If no fru area defined in ID_LOOKUP, an empty string will be returned.
131    @dbus.service.method(DBUS_NAME, in_signature='y', out_signature='s')
132    def getFRUArea(self, fru_id):
133        ret_str = ''
134        fru_id = '_' + str(fru_id)
135        area_list = [
136            area for area in System.ID_LOOKUP['FRU_STR'].keys()
137            if area.endswith(fru_id)]
138        for area in area_list:
139            ret_str = area + ',' + ret_str
140        # remove the last ','
141        return ret_str[:-1]
142
143    def start_process(self, name):
144        if System.APPS[name]['start_process']:
145            app = System.APPS[name]
146            process_name = self.bin_path+"/"+app['process_name']
147            cmdline = []
148            cmdline.append(process_name)
149            if 'args' in app:
150                for a in app['args']:
151                    cmdline.append(a)
152            try:
153                print "Starting process: "+" ".join(cmdline)+": "+name
154                if app['monitor_process']:
155                    app['popen'] = subprocess.Popen(cmdline)
156                else:
157                    subprocess.Popen(cmdline)
158
159            except Exception as e:
160                ## TODO: error
161                print "ERROR: starting process: "+" ".join(cmdline)
162
163    def NewObjectHandler(self, obj_path, iprops, bus_name=None):
164        current_state = self.Get(DBUS_NAME, "current_state")
165        if current_state not in System.EXIT_STATE_DEPEND:
166            return
167
168        if obj_path in System.EXIT_STATE_DEPEND[current_state]:
169            print "New object: "+obj_path+" ("+bus_name+")"
170
171    @dbus.service.method(DBUS_NAME, in_signature='s', out_signature='sis')
172    def gpioInit(self, name):
173        gpio_path = ''
174        gpio_num = -1
175        r = ['', gpio_num, '']
176        if name not in System.GPIO_CONFIG:
177            # TODO: Error handling
178            print "ERROR: "+name+" not found in GPIO config table"
179        else:
180
181            gpio_num = -1
182            gpio = System.GPIO_CONFIG[name]
183            if 'gpio_num' in System.GPIO_CONFIG[name]:
184                gpio_num = gpio['gpio_num']
185            else:
186                if 'gpio_pin' in System.GPIO_CONFIG[name]:
187                    gpio_num = System.convertGpio(gpio['gpio_pin'])
188                else:
189                    print "ERROR: SystemManager - GPIO lookup failed for "+name
190
191            if (gpio_num != -1):
192                r = [obmc.enums.GPIO_DEV, gpio_num, gpio['direction']]
193        return r
194
195
196if __name__ == '__main__':
197    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
198    bus = get_dbus()
199    obj = SystemManager(bus, OBJ_NAME)
200    mainloop = gobject.MainLoop()
201    obj.unmask_signals()
202    name = dbus.service.BusName(DBUS_NAME, bus)
203
204    print "Running SystemManager"
205    mainloop.run()
206