def _do_measure(self):
log("monitor",TRACE,"Start run",self.name)
try:
self.running.clear()
self.started_at = now()
self._monitor()
if self.send_check_event:
simple_event(self.ectx, "monitor","checked",*self.name)
if self.new_value is not None:
self.last_value = self.value
self.value = self.new_value
if hasattr(self,"delta"):
if self.last_value is not None:
val = self.value-self.last_value
self._ectx.value_delta = val
if val >= 0 or self.delta == 0:
simple_event(self.ectx,"monitor","update",*self.name)
else:
simple_event(self.ectx,"monitor","update",*self.name)
except Exception as e:
fix_exception(e)
process_failure(e)
finally:
log("monitor",TRACE,"Stop run",self.name)
self.running.set()
self._schedule()
def go_down(self, _=None):
if not self.is_up:
return
self.is_up = False
if _ is not None:
process_failure(_)
simple_event("onewire","down",typ=self.typ,id=self.id)
def __init__(self, name, host,port, socket=None):
self.socket = socket
self.host = host
self.port = port
self.name = name
storage2 = getattr(self,"storage2",{})
assert (host,port) not in storage2, "already known host/port tuple"
super(NetCommonConnector,self).__init__()
storage2[(host,port)] = self
external = (self.socket is not None)
if self.socket is None:
try:
self._connect()
except Exception as ex:
fix_exception(ex)
if isinstance(ex,EnvironmentError) and ex.errno in (errno.ECONNREFUSED,errno.EHOSTDOWN,errno.EHOSTUNREACH,errno.ENETDOWN,errno.ENETUNREACH,errno.ETIMEDOUT):
ex.no_backtrace = True
try:
del storage2[(host,port)]
except KeyError:
pass
else:
super(NetCommonConnector,self).delete()
try:
self.not_up_event()
except Exception as ex2:
fix_exception(ex2)
process_failure(ex2)
reraise(ex)
self.handshake(False)
else:
self.handshake(True)
self.start_job("job",self._reader)
def _do_measure(self):
log("monitor",TRACE,"Start run",self.name)
try:
self.running.clear()
self.started_at = now()
self._monitor()
if self.send_check_event:
process_event(Event(self.ctx, "monitor","checked",*self.name))
if self.new_value is not None:
if hasattr(self,"delta"):
if self.value is not None:
val = self.new_value-self.value
if val >= 0 or self.delta == 0:
process_event(Event(Context(),"monitor","value",self.new_value-self.value,*self.name))
else:
process_event(Event(Context(),"monitor","value",self.new_value,*self.name))
if self.new_value is not None:
self.value = self.new_value
except Exception as e:
fix_exception(e)
process_failure(e)
finally:
log("monitor",TRACE,"Stop run",self.name)
self.running.set()
self._schedule()
def go_down(self, _=None): if not self.is_up: return self.is_up = False if _ is not None: process_failure(_) process_event(Event(self.ctx,"onewire","down",self.typ,self.id))
def process(self, event=None, **k):
super(EventCallback,self).process(**k)
# This is an event monitor. Failures will not be tolerated.
try:
msg = getattr(event.ctx,'raw',None)
if msg is None:
d = dict((x,y) for x,y in event.ctx if isinstance(y,(int,str,unicode,long,bool,float)))
try:
msg = json.dumps(dict(event=list(event), **d))
except (TypeError,UnicodeDecodeError):
msg = json.dumps(dict(data=repr(event)+"|"+repr(d)))
elif isinstance(msg,(int,long,float)):
msg = str(msg)
elif isinstance(msg,unicode):
msg = msg.encode("utf-8")
global _mseq
_mseq += 1
msg = amqp.Message(body=msg, content_type='application/json', message_id=base_mseq+str(_mseq))
self.channel.basic_publish(msg=msg, exchange=self.exchange, routing_key=".".join(str(x) for x in self.prefix+tuple(event)[self.strip:]))
except Exception as ex:
fix_exception(ex)
process_failure(ex)
try:
self.cancel()
except Exception as ex:
fix_exception(ex)
process_failure(ex)
raise TrySomethingElse
def update_all(self): try: process_event(Event(Context(),"onewire","scanning",self.name)) self._update_all() except Exception as e: fix_exception(e) process_failure(e)
def update_all(self):
try:
simple_event("onewire","scanning",self.name)
self._update_all()
except Exception as e:
fix_exception(e)
process_failure(e)
def error(self,err):
"""An error occurred."""
if self.result is not None and not self.result.successful:
log("onewire",DEBUG,"done error: ",self,err)
self.result.set_exception(err)
else:
process_failure(err)
def _watcher(self): res = [] while True: try: self.update_all() except Exception as ex: fix_exception(ex) process_failure(ex) resl = len(res) while res: q = res.pop() q.set_exception(ex) else: resl = len(res) while res: q = res.pop() q.set(None) if TESTING: if resl: d = 10 else: d = 30 else: if resl: d = 60 else: d = 300 while True: try: q = self.watch_q.get(timeout=(d if not res else 0)) except Empty: break else: res.append(q)
def dataReceived(self, data):
self._stop_timer()
data = self.dbuf+data
while True:
xi = len(data)+1
try: pi = data.index('\r')
except ValueError: pi = xi
try: ei = data.index('\n')
except ValueError: ei = xi
if pi==xi and ei==xi:
break
if pi < ei:
self.lbuf = data[:pi]
data = data[pi+1:]
else:
msg = data[:ei]
data = data[ei+1:]
if msg == "" and self.lbuf is not None:
msg = self.lbuf
self.lbuf = None
try:
self.lineReceived(msg)
except Exception as e:
fix_exception(e)
process_failure(e)
self.dbuf = data
self._start_timer()
def do_timed_switch(self): self.timer = None try: self.do_switch() except Exception as e: fix_exception(e) process_failure(e)
def err(e): try: e = e.get() except BaseException as e: pass from homevent.run import process_failure fix_exception(e) process_failure(e)
def _run(self,a,k): try: super(Async,self).run(*a,**k) except HaltSequence: pass except Exception as err: fix_exception(err) process_failure(err)
def _readcf(): c = Context() try: for f in args: parse(f,ctx=c) except Exception as e: fix_exception(e) process_failure(e) shut_down()
def _run(self,ctx,**k): try: super(TryStatement,self).run(ctx,**k) except Exception as err: fix_exception(err) if self.catch_do: self.catch_do.run(ctx(error_=err), **k) else: process_failure(err)
def exposed_monitor(self,callback,*args): try: w = EventCallback(self,callback,*args) self.workers.add(w) register_worker(w) return w except Exception as ex: fix_exception(ex) process_failure(ex)
def exposed_cmd_list(self,*args):
# don't call this 'exposed_list'!
c = get_collect(args, allow_collection=True)
try:
if c is None:
for m in all_collect(skip=False):
yield m.name,
elif isinstance(c,Collection):
if args[-1] == "*":
for n,m in c.iteritems():
yield n,m
return
for n,m in c.iteritems():
try:
m = m.info
except AttributeError:
m = m.name
else:
if callable(m):
m = m()
if isinstance(m,basestring):
m = m.split("\n")[0].strip()
if m is not None:
yield (n,m)
else:
yield n,
else:
q = Queue(3)
job = spawn(flatten,q,(c,))
job.link(lambda _:q.put(None))
while True:
res = q.get()
if res is None:
return
p,t = res
if isinstance(t,datetime):
if TESTING:
if t.year != 2003:
t = "%s" % (humandelta(t-now(t.year != 2003)),)
else:
t = "%s (%s)" % (humandelta(t-now(t.year != 2003)),t)
ti = t.rfind('.')
if ti>0 and len(t)-ti > 3 and len(t)-ti<9: # limit to msec
t= t[:ti+3]+")"
# otherwise transmit the datetime as-is
elif not isinstance(t,(date,time,timedelta)):
t = unicode(t)
yield p,t
except Exception as e:
fix_exception(e)
yield "* ERROR *",repr(e)
process_failure(e)
def _shut_down(): """\ Code to be called last. The main loop is running and will be stopped when all events have progressed. """ try: process_event(shutdown_event) except Exception as e: fix_exception(e) process_failure(e)
def _get_typ(self):
try:
t = self.get("type")
self._setattr(t,"typ")
except Exception as ex:
del self.typ
del devices[self.id]
fix_exception(ex)
process_failure(ex)
else:
self.go_up()
def delete(self,ctx=None): if self.timer: self.timer.cancel() self.timer = None try: if self.state: process_event(Event(self.ctx,"pcm","set",self.names[0],*self.name)) except Exception as ex: fix_exception(ex) process_failure(ex) finally: super(CommonPM,self).delete()
def start_up():
"""\
Code to be called first. The main loop is NOT running.
"""
register_worker(Shutdown_Worker("shutdown handler"))
global running
if not running:
running = True
try:
process_event(startup_event)
except Exception as e:
fix_exception(e)
process_failure(e)
def cont(self, _=None):
while self.waiting:
try:
msg = self.waiting.pop(0)
log("fs20",DEBUG,msg)
d = self._dataReceived(msg)
except Exception as e:
fix_exception(e)
process_failure(e)
else:
if d:
d.addCallback(self.cont)
return
self.waiting = None
self._start_timer()
def process(self, **k): super(EventCallback,self).process(**k) # This is an event monitor. Failures will not be tolerated. try: self.run_callback(**k) except Exception as ex: fix_exception(ex) process_failure(ex) try: self.cancel() except Exception as ex: fix_exception(ex) process_failure(ex) raise TrySomethingElse
def exposed_command(self,*args,**kwargs):
try:
sub = kwargs.get("sub",())
if sub:
cmd = CommandProcessor(parent=self,ctx=self.ctx)
proc = cmd.complex_statement(args)
for s in sub:
proc.simple_statement(s)
proc.done()
cmd.run()
else:
return CommandProcessor(parent=self,ctx=self.ctx).simple_statement(args)
except Exception as e:
fix_exception(e)
process_failure(e)
reraise(e)
def dataReceived(self,val): buffer = self.buffer + val data = [] while True: i = buffer.find(self.delimiter) if i < 0: break data.append(buffer[:i]) buffer = buffer[i+len(self.delimiter):] self.buffer = buffer for d in data: try: self.lineReceived(d) except Exception as e: fix_exception(e) process_failure(e)
def _reader(self): try: while self.socket is not None: try: r = self.socket.recv(4096) if r is None or r == "": return except Exception as e: fix_exception(e) process_failure(e) return try: self.dataReceived(r) except Exception as e: fix_exception(e) process_failure(e) finally: if self.socket: self.socket.close() self.socket = None self.down_event(True)
def do_switch(self): """Click""" if self.state: self.state = 0 tn = self.t_off else: self.state = 1 tn = self.t_on process_event(Event(self.ctx,"pcm","set",self.names[self.state],*self.name)) try: self.last = self.next if tn is not None: self.next = self.last + dt.timedelta(0,tn) self.timer = callLater(False,self.next,self.do_timed_switch) else: self.next = None except Exception as e: fix_exception(e) process_failure(e) simple_event(self.ctx,"pcm","error",*self.name)
def died(e): fix_exception(e) process_failure(e)
def _monitor(self):
"""This implements a monitor sequence."""
self.steps = 0
self.data = []
self.new_value = None
def delay():
if isinstance(self.delay,tuple):
sleepUntil(False,time_delta(self.delay))
else:
sleepUntil(False,self.delay)
try:
while self.job and (self.maxpoints is None or self.steps < self.maxpoints):
if self.steps and not self.passive:
delay()
self.steps += 1
try:
val = self.one_value(self.steps)
except MonitorAgain:
pass
except Exception as e:
fix_exception(e)
process_failure(e)
break
else:
log("monitor",TRACE,"raw",val,*self.name)
if hasattr(self,"factor"):
try:
val = val * self.factor + self.offset
except TypeError:
log("monitor",ERROR,self.name,val,self.factor,self.offset)
self.data.append(val)
avg = self.filter_data()
if avg is not None:
if self.value is None or \
self.diff is None or \
abs(self.value-avg) > self.diff:
try:
if self.value is not None and \
self.alarm is not None and \
abs(self.value-avg) > self.alarm:
process_event(Event(Context(),"monitor","alarm",avg,*self.name))
except Exception as e:
fix_exception(e)
process_failure(e)
else:
self.new_value = avg
return
else:
log("monitor",TRACE,"More data", self.data, "for", u"‹"+" ".join(unicode(x) for x in self.name)+u"›")
try:
process_event(Event(Context(),"monitor","error",*self.name))
except Exception as e:
fix_exception(e)
process_failure(e)
finally:
log("monitor",TRACE,"End run", self.name)
self.stopped_at = now()
