def __init__(self):
self.config={}
self.conn=None
self.chan=None
self.cpoll=0
self.cLastConnAttempt=0
Bus.publish(self,"%llconfig", self.LCONFIG)
def activate (self, shell):
"""
Called by Rhythmbox when the plugin is activated
"""
self.active=True
self.shell = shell
self.sp = shell.get_player()
self.db=self.shell.props.db
self.sl=shell.props.sourcelist
self.plm=shell.get_playlist_manager()
## We might have other signals to connect to in the future
self.dbcb = (
#self.db.connect("entry-added", self.on_entry_added),
#self.db.connect("entry-deleted", self.on_entry_deleted),
#self.db.connect("entry-changed", self.on_entry_changed),
self.db.connect("load-complete", self.on_load_complete),
)
self.slcb = (
self.sl.connect("drop-received", self.on_drop_received),
#self.sl.connect("selected", self.on_selected),
)
self.plcb = (
self.plm.connect("playlist-added", self.on_playlist_added),
self.plm.connect("playlist-created", self.on_playlist_created),
#self.plm.connect("status-changed", self.on_status_changed),
)
## Distribute the vital RB objects around
Bus.publish("__pluging__", "rb_shell", self.shell, self.db, self.sp)
self.type_song=self.db.entry_type_get_by_name("song")
def _onError(self, e):
try:
details=self._getDeviceDetails(e.device)
self._q.put(["%device-error", details], block=True)
Bus.publish(self, "%log", "warning", "Device error: %s" % details)
except Exception,e:
Bus.publish(self, "%log", "error", "exception whilst attempting to report Phidgets.onError (%s)" % e)
def _hDin(self, serial, pin, value):
pname, mval=self.domap(serial, pin, value)
#print "_hDin, %s, %s, %s, %s" % (serial, pin, value, pname)
if mval is not None:
Bus.publish(self, "%state-changed", serial, pname, mval)
else:
Bus.publish(self, "%state-changed", serial, "din:%s" % pin, mval)
def validateConfig(self, config):
""" Validates (as much as possible) the configuration information
before handing it off
Categories: "States", "Devices"
Pins: integer
"""
pinmap={}
try: devices=config.get("Devices", None) or config["devices"]
except:
self.log("warning", "Configuration file missing 'Devices' section")
return
try: states=config.get("States", None) or config["states"]
except:
self.log("warning", "Configuration file missing 'States' section")
return
pinnames=[]
try:
for device_name in devices:
device=devices[device_name]
try: pins = device.get("Pins", None) or device["pins"]
except:
self.log("warning", "Expecting 'pins' entry for Device(%s) in 'Devices' section" % device_name)
return
for pin in pins:
pname=pins[pin]
pinnames.extend([pname])
try: _ipin=int(pin)
except:
self.log("warning", "Expecting 'integer' value for pin entry, device(%s)" % device)
return
## stringify for less headache: normalize type
m="%s.%s" % (device_name, pin)
pinmap[m] = pname
except:
self.log("warning", "Error whilst validating 'Devices' section of configuration file")
return
#print "pinnames: ",pinnames
try:
for pinname in states:
if not pinname in pinnames:
self.log("warning", "Pin name(%s) not found in any 'Device' definition" % pinname)
except:
self.log("warning", "Error whilst validating 'States' section of configuration file")
return
self.config=config
self.log("info", "Successfully validated configuration file(%s)" % self.cpath)
Bus.publish(self, "%config-sensors", self.config)
Bus.publish(self, "%pin-map", pinmap)
def Devices(self, devices):
""" Signal Handler
Signal normally issued by Phidgets-Manager
"""
for device in devices:
ddetails=deviceHelper(device)
Bus.publish(self, "%device", ddetails)
def processChange(self, iotype, dic):
serial=dic["serial"]
pin=dic["pin"]
value=dic["value"]
pname, mval=self.domap(serial, iotype, pin, value)
dic.update({"sensor_name": pname, "sensor_state": mval})
if mval is not None:
Bus.publish(self, "%state-changed", iotype, dic)
def _doUpdateInfo(self):
""" Sends an update on the discovered devices """
devices=self._mng.getAttachedDevices()
result=[]
for device in devices:
details=self._getDeviceDetails(device)
result.extend([details])
Bus.publish(self, "%devices", result)
def processMsg(self, data):
try:
devices=json.loads(data)
except Exception,e:
Bus.publish(self, "%llog", "%json-decode",
"warning", "Error(%s) decoding json object: %s" % (e, data))
return
def on_load_complete(self, *_):
"""
'load-complete' signal handler
Publishes the filtered list of db entries
"""
self.load_complete=True
Bus.publish("pluging", "load_complete")
Bus.publish("pluging", "song_entries", self.song_entries)
def _setup(self):
self._mng.setOnAttachHandler(self._onAttach)
self._mng.setOnDetachHandler(self._onDetach)
self._mng.setOnErrorHandler(self._onError)
try:
self._mng.openManager()
except Exception,e:
Bus.publish(self, "%log", "error", "Can't open Phidgets.Manager (%s)" % e)
raise RuntimeError("Can't open Phidgets.Manager")
def __init__(self):
self._q=Queue()
self._mng=None
self._info_publish_counter=0
try:
self._mng=Manager()
self._setup()
except Exception,e:
Bus.publish(self, "%log", "error", "Can't instantiate Phidgets.Manager (%s)" % e)
raise RuntimeError("can't instantiate Phidgets.Manager")
def _hPoll(self, pc):
if not self.config:
Bus.publish(self, "%config-amqp?")
if not self.comm:
self.comm=AMQPCommTx(self.config, self.EXCH)
self.comm.connect()
if not self.comm.isOk():
del self.comm
self.comm=None
def setup(self):
""" Setup the connection & channel """
Bus.publish(self, "%config-amqp?")
try:
self.conn=amqp.Connection(insist=True, **self.config)
except Exception,e:
self.conn=None
Bus.publish(self, "%conn-error")
self.log("%conn-error", "error",
"Failed to connect to AMQP broker. Exception(%s)" % e)
return
def on_entry_added(self, _tree, entry):
"""
'entry-added' signal handler
Filters the db entries based on the 'song' entry type
"""
type=entry.get_entry_type()
if type==self.type_song:
if not self.load_complete:
id=self.db.entry_get(entry, rhythmdb.PROP_ENTRY_ID)
self.song_entries.append(int(id))
Bus.publish("pluging", "entry_added", id, entry)
def _hpoll(self, pc):
if self.config is None:
Bus.publish(self, "%config-amqp?")
if self.comm is not None:
if not self.comm.isOk():
del self.comm
self.comm=None
if self.comm is None:
self.comm=AMQPCommTx(self.config, self.EXCH)
self.comm.connect()
def on_playing_song_changed (self, sp, entry):
"""
The event that starts the whole "sync" process
"""
## unfortunately, I don't have a better process
## for keeping the "user parameters" synced just yet...
Bus.publish("pluging", "config?")
self.current_entry = sp.get_playing_entry()
details=EntryHelper.track_details(self.shell, entry)
if details:
track=Track(details=details, entry=self.current_entry)
Bus.publish("pluging", "track?", track)
def processMsgQueue(self):
while True:
msg=self.currentWorker.rxFromWorker()
if msg is None:
break
try:
mtype=msg.pop(0)
mdata=msg.pop(0)
except:
Bus.publish(self, "%llog", "%msg-error", "error", "Error whilst decoding message from AMQP exchange 'org.sensors' ")
continue
## e.g. "state.io.din"
Bus.publish(self, mtype, mdata)
def create_configure_dialog(self, dialog=None):
"""
This method is called by RB when "configure" button
is pressed in the "Edit->Plugins" menu.
Note that the dialog *shouldn't* be destroyed but "hidden"
when either the "close" or "X" buttons are pressed.
"""
if not dialog:
glade_file_path=self.find_file("config.glade")
proxy=ConfigDialog(glade_file_path)
dialog=proxy.get_dialog()
dialog.present()
Bus.publish("pluging", "config?")
return dialog
def _hpoll(self, pc):
self.cpc=pc
if not self.config:
Bus.publish(self, "%config-amqp?")
self.maybeSpawn()
if self.currentWorker is not None:
if not self.currentWorker.is_alive():
Bus.publish(self, "%conn-error", "warning", "Connection to AMQP broker failed")
del self.currentWorker
self.currentWorker = None
if self.currentWorker is not None:
self.processMsgQueue()
def __init__(self, queue, serial):
self.serial=serial
self._q=queue
self._ic=0 ## digital input count
self._oc=0 ## digital output count
self._sc=0 ## sensor input count
try:
self.ifk=InterfaceKit()
self._setHooks()
self.ifk.openPhidget(int(serial))
except Exception,e:
print "*** Exception: ",e
w="Can't instantiate a Phidgets.Devices.InterfaceKit"
Bus.publish(self, "%log", "warning", w)
def doping(self):
if self.gen is None:
self.gen=self.iterDevices()
try: device=self.gen.next()
except:
self.inPing=False
self.gen=None
self.cleanup()
return
device_serial=device.serial
try:
device.ping()
except:
Bus.publish(self, "%log", "warning", "Attempt to `ping` device serial(%s) failed" % device_serial)
self.todel.extend([device_serial])
def _hdevice(self, details):
""" %device - local message handler
"""
dtype=details.get("type", None)
if dtype!="PhidgetInterfaceKit":
return
serial=details.get("serial", None)
entry=self._devices.get(serial, {})
if not entry:
Bus.publish(self, "%log", "Found IFK device, serial(%s)" % serial)
Bus.publish(self, "%attached", details)
try: device=IfkAgent(self._q, serial)
except: device=None
if device:
self._devices[serial] = device
def activate (self, shell):
self.shell = shell
sp = shell.get_player()
self.db=self.shell.props.db
## We might have other signals to connect to in the future
self.cb = (
sp.connect ('playing-song-changed', self.on_playing_song_changed),
)
self.dbcb = (
self.db.connect("entry-added", self.on_entry_added),
self.db.connect("load-complete", self.on_load_complete),
)
## Distribute the vital RB objects around
Bus.publish("pluging", "rb_shell", shell, self.db, sp)
self.type_song=self.db.entry_type_get_by_name("song")
def _hpoll(self, *p):
""" Pull as much messages as
are available from the queue
"""
while True:
try: msg=self._q.get_nowait()
except Empty: msg=None
if msg is None:
break
_mtype=msg.pop(0)
_dic=msg.pop(0)
Bus.publish(self, _mtype, _dic)
self._info_publish_counter=self._info_publish_counter+1
if self._info_publish_counter > self.INFO_RATE:
self._info_publish_counter=0
self._doUpdateInfo()
def _hllog(self, ltype, *p):
c=self.lc.get(ltype, 0)+1
self.lc[ltype]=c
try: level, msg = p
except:
level="info"
try: msg = p[0]
except: raise RuntimeError("LogLimiter: invalid usage")
cdelta=self.map.get(ltype, self.DEFAULT_CDELTA)
lpoll=self.st.get(ltype, 0)
delta=self.cpoll - lpoll
#print "cpoll(%s) ltype(%s) delta(%s) cdelta(%s) msg(%s)" % (self.cpoll, ltype, delta, cdelta, msg)
if delta >= cdelta or lpoll==0:
self.st[ltype] = self.cpoll
Bus.publish(self, "%log", level, "(%s:%s) %s" % (ltype, c, msg))
def publish(self, rkey, msg):
try: jmsg=json.dumps(msg)
except:
self.log("%json-encode", "Error", "Error encoding to JSON: %s" % msg)
return
msg = amqp.Message(jmsg)
msg.properties["delivery_mode"] = 2
msg.content_type="application/json"
if not self.chan:
Bus.publish(self, "%llog", "%conn-error", "error", "Connection to AMQP broker not opened")
return
try:
#print "AMQPCommTx.publish: rkey(%s) msg(%s)" % (rkey, jmsg)
self.chan.basic_publish(msg, exchange=self.exch, routing_key=rkey)
except Exception,e:
#print "sMsg: rkey(%s) jmsg(%s)" % (rkey, jmsg)
self.log("%conn-error", "error", "Failed to send message to AMQP broker: %s" % e)
self.closeConn()
def doRefresh(self):
try: statinfo=os.stat(self.cpath)
except: statinfo=None
## st_mode, st_ino, st_dev, st_nlink, st_uid,
## st_gid, st_size, st_atime, st_mtime, st_ctime
if not statinfo:
if not self.nConfigPath:
self.nConfigPath=True
self.log("warning", "Configuration file not found(%s) - using defaults" % self.cpath)
self.useDefaults()
return
mtime=statinfo.st_mtime
if self.mtime != mtime:
self.log("info", "Configuration file changed, mtime(%s)" % mtime)
self.mtime = mtime
self.nConfigPath=False
self._handleChange()
Bus.publish(self, "%config-amqp", self.config)
def _hpoll(self, *p):
""" Pull as much messages as
are available from the queue
"""
while True:
try: msg=self._q.get_nowait()
except Empty: msg=None
if msg is None:
break
_mtype=msg.pop(0)
Bus.publish(self, _mtype, *msg)
if self.inPing:
self.doping()
return
self.cping=self.cping+1
if self.cping > self.PING_INTERVAL:
self.cping=0
self.inPing=True
self.doping()
def ping(self):
for index in range(0, self._ic):
iv=self.ifk.getInputState(index)
dic=self.prepareDic(index, iv)
Bus.publish(self, "%device-din", dic)
for index in range(0, self._oc):
iv=self.ifk.getOutputState(index)
dic=self.prepareDic(index, iv)
Bus.publish(self, "%device-dout", dic)
for index in range(0, self._sc):
iv=self.ifk.getSensorRawValue(index)
dic=self.prepareDic(index, iv)
Bus.publish(self, "%device-ain", dic)