Only send async updates for exported params
Change-Id: I466d99bf0234529ed58fa8045af83a0da44f96f7
This commit is contained in:
Enrico Faulhaber
parent
b26b64032e
commit
9a402857f3
@ -19,10 +19,10 @@
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# Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
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#
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# *****************************************************************************
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"""Define Baseclasses for real devices implemented in the server"""
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"""Define Baseclasses for real Modules implemented in the server"""
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# XXX: connect with 'protocol'-Devices.
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# Idea: every Device defined herein is also a 'protocol'-device,
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# XXX: connect with 'protocol'-Modules.
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# Idea: every Module defined herein is also a 'protocol'-Module,
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# all others MUST derive from those, the 'interface'-class is still derived
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# from these base classes (how to do this?)
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@ -165,7 +165,7 @@ class CMD(object):
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# Meta class
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# warning: MAGIC!
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class DeviceMeta(type):
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class ModuleMeta(type):
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def __new__(mcs, name, bases, attrs):
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newtype = type.__new__(mcs, name, bases, attrs)
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@ -260,8 +260,9 @@ class DeviceMeta(type):
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if not EVENT_ONLY_ON_CHANGED_VALUES or (value != pobj.value):
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pobj.value = value
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# also send notification
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self.log.debug('%s is now %r' % (pname, value))
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self.DISPATCHER.announce_update(self, pname, pobj)
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if self.PARAMS[pname].export:
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self.log.debug('%s is now %r' % (pname, value))
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self.DISPATCHER.announce_update(self, pname, pobj)
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setattr(newtype, pname, property(getter, setter))
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@ -283,9 +284,9 @@ class DeviceMeta(type):
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return newtype
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# Basic device class
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# Basic module class
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#
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# within devices, parameters should only be addressed as self.<pname>
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# within Modules, parameters should only be addressed as self.<pname>
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# i.e. self.value, self.target etc...
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# these are accesses to the cached version.
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# they can also be written to
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@ -293,9 +294,9 @@ class DeviceMeta(type):
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# if you want to 'update from the hardware', call self.read_<pname>
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# the return value of this method will be used as the new cached value and
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# be returned.
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class Device(object):
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"""Basic Device, doesn't do much"""
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__metaclass__ = DeviceMeta
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class Module(object):
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"""Basic Module, doesn't do much"""
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__metaclass__ = ModuleMeta
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# static PROPERTIES, definitions in derived classes should overwrite earlier ones.
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# how to configure some stuff which makes sense to take from configfile???
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PROPERTIES = {
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@ -342,10 +343,10 @@ class Device(object):
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# derive automatic properties
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mycls = self.__class__
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myclassname = '%s.%s' % (mycls.__module__, mycls.__name__)
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self.PROPERTIES['implementation'] = myclassname
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self.PROPERTIES['interfaces'] = [
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self.PROPERTIES['_implementation'] = myclassname
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self.PROPERTIES['interface_class'] = [
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b.__name__ for b in mycls.__mro__ if b.__module__.startswith('secop.modules')]
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self.PROPERTIES['interface'] = self.PROPERTIES['interfaces'][0]
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#self.PROPERTIES['interface'] = self.PROPERTIES['interfaces'][0]
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# remove unset (default) module properties
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for k, v in self.PROPERTIES.items():
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@ -370,7 +371,7 @@ class Device(object):
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for k, v in cfgdict.items():
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if k not in self.PARAMS:
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raise ConfigError(
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'Device %s:config Parameter %r '
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'Module %s:config Parameter %r '
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'not unterstood! (use on of %r)' %
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(self.name, k, self.PARAMS.keys()))
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# complain if a PARAM entry has no default value and
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@ -379,7 +380,7 @@ class Device(object):
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if k not in cfgdict:
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if v.default is Ellipsis and k != 'value':
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# Ellipsis is the one single value you can not specify....
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raise ConfigError('Device %s: Parameter %r has no default '
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raise ConfigError('Module %s: Parameter %r has no default '
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'value and was not given in config!' %
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(self.name, k))
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# assume default value was given
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@ -402,7 +403,7 @@ class Device(object):
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except (ValueError, TypeError) as e:
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self.log.exception(formatExtendedStack())
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raise
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raise ConfigError('Device %s: config parameter %r:\n%r' %
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raise ConfigError('Module %s: config parameter %r:\n%r' %
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(self.name, k, e))
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setattr(self, k, v)
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self._requestLock = threading.RLock()
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@ -416,17 +417,17 @@ class Device(object):
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self.log.debug('late init()')
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class Readable(Device):
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"""Basic readable device
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class Readable(Module):
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"""Basic readable Module
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providing the readonly parameter 'value' and 'status'
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"""
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PARAMS = {
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'value': PARAM('current value of the device', readonly=True, default=0.,
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'value': PARAM('current value of the Module', readonly=True, default=0.,
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datatype=FloatRange(), unit='', poll=True),
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'pollinterval': PARAM('sleeptime between polls', default=5,
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readonly=False, datatype=FloatRange(0.1, 120), ),
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'status': PARAM('current status of the device', default=(status.OK, ''),
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'status': PARAM('current status of the Module', default=(status.OK, ''),
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datatype=TupleOf(
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EnumType(**{
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'IDLE': status.OK,
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@ -440,7 +441,7 @@ class Readable(Device):
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}
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def init(self):
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Device.init(self)
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Module.init(self)
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self._pollthread = threading.Thread(target=self.__pollThread)
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self._pollthread.daemon = True
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self._pollthread.start()
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@ -475,7 +476,7 @@ class Readable(Device):
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continue
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if ((int(pobj.poll) < 0) and fastpoll) or (
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0 == nr % abs(int(pobj.poll))):
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# poll always if pobj.poll is negative and fastpoll (i.e. device is busy)
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# poll always if pobj.poll is negative and fastpoll (i.e. Module is busy)
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# otherwise poll every 'pobj.poll' iteration
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rfunc = getattr(self, 'read_' + pname, None)
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if rfunc:
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@ -487,14 +488,14 @@ class Readable(Device):
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return fastpoll
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class Driveable(Readable):
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"""Basic Driveable device
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class Drivable(Readable):
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"""Basic Drivable Module
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providing a settable 'target' parameter to those of a Readable
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"""
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PARAMS = {
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'target': PARAM(
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'target value of the device',
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'target value of the Module',
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default=0.,
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readonly=False,
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datatype=FloatRange(),
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@ -390,6 +390,8 @@ class Dispatcher(object):
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# easy approach: poll all values...
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for modulename, moduleobj in self._modules.items():
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for pname, pobj in moduleobj.PARAMS.items():
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if not pobj.export:
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continue
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# WARNING: THIS READS ALL PARAMS FROM HW!
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# XXX: should we send the cached values instead? (pbj.value)
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# also: ignore errors here.
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