def add_collection(self, path, *args):
"""Add collection to the namespace. For instance::
inst.add_collection('/c1')
:param string path: path under which to add the collection
:param args[0]: :py:class:`Collection` class to add, if present
:rtype: the :py:class:`Collection` which was added
:raises: :py:class:`SmapException` if the parent is not a
collection, or the path exists.
"""
if len(args) > 0 and ICollection.providedBy(args[0]):
collection = args[0]
elif len(args) == 0:
collection = Collection(path, self)
else:
raise SmapException("add_collection: wrong number of arguments")
path = util.split_path(path)
if len(path) > 0:
parent = self.get_collection(util.join_path(path[:-1]))
if not parent:
raise SmapException("add_collection: parent is not collection!")
parent.add_child(path[-1])
if util.join_path(path) in self.OBJS_PATH:
raise SmapException("add_timeseries: path " + str(path) +
" exists!")
self.OBJS_PATH[util.join_path(path)] = collection
if not self.loading: self.reports.update_subscriptions()
return collection
def add_collection(self, path, *args):
"""Add collection to the namespace. For instance::
inst.add_collection('/c1')
:param string path: path under which to add the collection
:param args[0]: :py:class:`Collection` class to add, if present
:rtype: the :py:class:`Collection` which was added
:raises: :py:class:`SmapException` if the parent is not a
collection, or the path exists.
"""
if len(args) > 0 and ICollection.providedBy(args[0]):
collection = args[0]
elif len(args) == 0:
collection = Collection(path, self)
else:
raise SmapException("add_collection: wrong number of arguments")
path = util.split_path(path)
if len(path) > 0:
parent = self.get_collection(util.join_path(path[:-1]))
if not parent:
raise SmapException(
"add_collection: parent is not collection!")
parent.add_child(path[-1])
if util.join_path(path) in self.OBJS_PATH:
raise SmapException("add_timeseries: path " + str(path) +
" exists!")
self.OBJS_PATH[util.join_path(path)] = collection
if not self.loading: self.reports.update_subscriptions()
return collection
def add_timeseries(self, path, *args, **kwargs):
"""Add a timeseries to the smap server at the given path. This will
generate a UUID for the timeseries.
direct form
:param path a Timeseries instance
simple form
:param args[0] is a uuid instance, or a key to generate a uuid with by combining it with the root uuid.
:param args[1] and kwargs are arguments passed to the Timeseries constructor. Therefore you have to include at least the UnitofMeasure
:param boolean replace: (kwarg) replace an existing timeseries at that path instead of throwing an exception
:param boolean recurse: recursively create parent collections instead of thrwoing an exception. Default is True.
:raises: :py:class:`SmapException` if the parent isn't a collection or the path already exists.
"""
replace = kwargs.pop('replace', False)
recurse = kwargs.pop('recurse', True)
klass = kwargs.pop('klass', Timeseries)
if len(args) == 0 or \
not ITimeseries.providedBy(args[0]) and not IActuator.providedBy(args[0]):
if len(args) == 2:
if not isinstance(args[0], uuid.UUID):
id = self.uuid(args[0], namespace=kwargs.get('namespace', None))
else:
id = args[0]
args = args[1:]
elif len(args) == 1:
id = self.uuid(util.norm_path(path), kwargs.get('namespace', None))
else:
id = self.uuid(util.norm_path(path))
# raise SmapException("SmapInstance.add_timeseries may only be called "
# "with two or three arguments")
kwargs.pop('namespace', None)
timeseries = klass(id, *args, **kwargs)
if id != args[0]:
setattr(timeseries, "key", args[0])
else:
timeseries = args[0]
path = util.split_path(path)
if recurse: self._add_parents(path)
parent = self.get_collection(util.join_path(path[:-1]))
if not replace and util.join_path(path) in self.OBJS_PATH:
raise SmapException("add_timeseries: path " + str(path) + " exists!")
if not parent:
raise SmapException("add_timeseries: parent is not a collection!")
parent.add_child(path[-1])
# place the new timeseries into the uuid and path tables
self.OBJS_UUID[timeseries['uuid']] = timeseries
self.OBJS_PATH[util.join_path(path)] = timeseries
timeseries.inst = self
setattr(timeseries, 'path', util.join_path(path))
if not self.loading: self.reports.update_subscriptions()
return timeseries
def add_timeseries(self, path, *args, **kwargs):
"""Add a timeseries to the smap server at the given path. This will
generate a UUID for the timeseries.
direct form
:param path a Timeseries instance
simple form
:param args[0] is a uuid instance, or a key to generate a uuid with by combining it with the root uuid.
:param args[1] and kwargs are arguments passed to the Timeseries constructor. Therefore you have to include at least the UnitofMeasure
:param boolean replace: (kwarg) replace an existing timeseries at that path instead of throwing an exception
:param boolean recurse: recursively create parent collections instead of thrwoing an exception. Default is True.
:raises: :py:class:`SmapException` if the parent isn't a collection or the path already exists.
"""
replace = kwargs.pop('replace', False)
recurse = kwargs.pop('recurse', True)
klass = kwargs.pop('klass', Timeseries)
if len(args) == 0 or \
not ITimeseries.providedBy(args[0]) and not IActuator.providedBy(args[0]):
if len(args) == 2:
if not isinstance(args[0], uuid.UUID):
id = self.uuid(args[0], namespace=kwargs.get('namespace', None))
else:
id = args[0]
args = args[1:]
elif len(args) == 1:
id = self.uuid(util.norm_path(path), kwargs.get('namespace', None))
else:
id = self.uuid(util.norm_path(path))
# raise SmapException("SmapInstance.add_timeseries may only be called "
# "with two or three arguments")
kwargs.pop('namespace', None)
timeseries = klass(id, *args, **kwargs)
if id != args[0]:
setattr(timeseries, "key", args[0])
else:
timeseries = args[0]
path = util.split_path(path)
if recurse: self._add_parents(path)
parent = self.get_collection(util.join_path(path[:-1]))
if not replace and util.join_path(path) in self.OBJS_PATH:
raise SmapException("add_timeseries: path " + str(path) + " exists!")
if not parent:
raise SmapException("add_timeseries: parent is not a collection!")
parent.add_child(path[-1])
# place the new timeseries into the uuid and path tables
self.OBJS_UUID[timeseries['uuid']] = timeseries
self.OBJS_PATH[util.join_path(path)] = timeseries
timeseries.inst = self
setattr(timeseries, 'path', util.join_path(path))
if not self.loading: self.reports.update_subscriptions()
return timeseries
def explore(item, path):
if not 'Contents' in item:
item.dirty = True
else:
for ps in item['Contents']:
newpath = path + [ps]
explore(self.inst.lookup(util.join_path(newpath)), newpath)
class InstanceResource(resource.Resource):
"""Resource which maps HTTP requests to requests on the sMAP
instance.
"""
def __init__(self, inst):
self.inst = inst
resource.Resource.__init__(self)
isLeaf = True
def render_GET(self, request):
request.setHeader('Content-type', 'application/json')
# assemble the results
try:
obj = self.inst.lookup(util.join_path(request.postpath))
except Exception, e:
import traceback
traceback.print_exc()
setResponseCode(request, exception, 500)
request.finish()
if obj == None:
request.setResponseCode(404)
return ("No such timeseries or collection: " +
util.join_path(request.postpath) + '\n')
else:
d = defer.maybeDeferred(core.SmapInstance.render_lookup, request,
obj)
d.addCallback(lambda x: self.send_reply(request, x))
d.addErrback(lambda x: self.send_error(request, x))
return server.NOT_DONE_YET
def explore(item, path):
if not 'Contents' in item:
item.dirty = True
else:
for ps in item['Contents']:
newpath = path + [ps]
explore(self.inst.lookup(util.join_path(newpath)),
newpath)
def render_PUT(self, request):
request.setHeader('Content-type', 'application/json')
# you can only PUT actuators
obj = self.inst.lookup(util.join_path(request.postpath))
d = defer.maybeDeferred(core.SmapInstance.render_lookup, request, obj)
d.addCallback(lambda x: self.send_reply(request, x))
d.addErrback(lambda x: self.send_error(request, x))
return server.NOT_DONE_YET
def render_PUT(self, request):
request.setHeader('Content-type', 'application/json')
# you can only PUT actuators
obj = self.inst.lookup(util.join_path(request.postpath))
d = defer.maybeDeferred(core.SmapInstance.render_lookup, request, obj)
d.addCallback(lambda x: self.send_reply(request, x))
d.addErrback(lambda x: self.send_error(request, x))
return server.NOT_DONE_YET
def render_GET(self, request):
request.setHeader('Content-type', 'application/json')
# assemble the results
try:
obj = self.inst.lookup(util.join_path(request.postpath))
except Exception, e:
import traceback
traceback.print_exc()
setResponseCode(request, exception, 500)
request.finish()
def render_GET(self, request):
request.setHeader('Content-type', 'application/json')
# assemble the results
try:
obj = self.inst.lookup(util.join_path(request.postpath))
except Exception, e:
import traceback
traceback.print_exc()
setResponseCode(request, exception, 500)
request.finish()
def lookup(self, id, pred=None):
"""Retrieve an object in the resource hierarchy by path or uuid. If
*id* is a string not starting with ``/``, it will be passed to the
:py:class:`uuid.UUID` constructor; otherwise it will be treated as a
pathname. *pred* is an optional predicate which can be used to test
the result.
"""
if util.is_string(id):
path = util.split_path(id)
if len(path) > 0 and path[-1][0] == "+":
return self._lookup_r(util.join_path(path[:-1]), pred=pred)
else:
obj = self.OBJS_PATH.get(util.join_path(path), None)
elif isinstance(id, uuid.UUID):
return self.OBJS_UUID.get(id, None)
else:
obj = None
if not pred or pred(obj):
return obj
else: return None
def lookup(self, id, pred=None):
"""Retrieve an object in the resource hierarchy by path or uuid. If
*id* is a string not starting with ``/``, it will be passed to the
:py:class:`uuid.UUID` constructor; otherwise it will be treated as a
pathname. *pred* is an optional predicate which can be used to test
the result.
"""
if util.is_string(id):
path = util.split_path(id)
if len(path) > 0 and path[-1][0] == "+":
return self._lookup_r(util.join_path(path[:-1]), pred=pred)
else:
obj = self.OBJS_PATH.get(util.join_path(path), None)
elif isinstance(id, uuid.UUID):
return self.OBJS_UUID.get(id, None)
else:
obj = None
if not pred or pred(obj):
return obj
else: return None
def writeDROMScsv(self, value):
fcsv = open('meterdata.csv','w')
fcsv.write(','.join(['DateTime', 'MeterId', 'Value1', 'Value2']) + '\n')
for path, val in value:
if not 'Readings' in val: continue
cmps = split_path(path)
channel = join_path(cmps[1:])
for d in val['Readings']:
if d is None: continue
ts = dtutil.strftime_tz(dtutil.ts2dt(d[0] / 1000), "%Y-%m-%d %H:%M", tzstr='Local')
if ts is None: continue
v = d[1]
if v is None: continue
if val['Properties']['UnitofMeasure']=='Watts': v /= 1000.
v /= 4. # approximate kWh
fcsv.write(','.join([ts,channel,str(v)]) + '\n')
fcsv.close()
def _add_parents(self, path):
for i in xrange(0, len(path)):
if not self.get_collection(util.join_path(path[:i])):
self.add_collection(util.join_path(path[:i]))
def _add(self, *args):
"""Add a new reading to this timeseries. This version must
only be called from the :py:mod:`twisted` main loop; *i.e.* from a
callback added with ``reactor.callFromThread()``
Can be called with 1, 2, or 3 arguments. The forms are
* ``_add(value)``
* ``_add(time, value)``
* ``_add(time, value, seqno)``
:raises SmapException: if the value's type does not match the stream
type, or was called with an invalid number of arguments.
"""
seqno = None
if len(args) == 1:
time = util.now()
if self.milliseconds: time *= 1000
value = args[0]
elif len(args) == 2:
time, value = args
elif len(args) == 3:
time, value, seqno = args
else:
raise SmapException("Invalid add arguments: must be (value), "
"(time, value), or (time, value, seqno)")
# note that we got data now
self.inst.statslog.mark()
time = int(time)
if not self.milliseconds:
time *= 1000
if not self._check_type(value):
raise SmapException("Attempted to add " + str(value) +
" to Timeseries, but " +
"the timeseries type is " +
self.__getitem__('Properties')['ReadingType'])
if seqno: reading = time, value, seqno
else: reading = time, value
self["Readings"].append(reading)
if not hasattr(self, 'inst'): return
# if a timeseries is dirty, we need to republish all of its
# metadata before we publish it so stream is right. some of
# this may have already been published, in which case it won't
# actually do anything.
if self.dirty:
split_path = util.split_path(getattr(self, 'path'))
for i in xrange(0, len(split_path)):
path_seg = util.join_path(split_path[:i])
self.inst.reports.publish(path_seg,
self.inst.get_collection(path_seg))
rpt = dict(self)
rpt['Readings'] = [reading]
self.inst.reports.publish(getattr(self, 'path'), rpt)
self.dirty = False
else:
# publish a stripped-down Timeseries object
self.inst.reports.publish(getattr(self, 'path'),
{'uuid' : self['uuid'],
'Readings' : [reading]})
def _add_parents(self, path):
for i in xrange(0, len(path)):
if not self.get_collection(util.join_path(path[:i])):
self.add_collection(util.join_path(path[:i]))
def _add(self, *args):
"""Add a new reading to this timeseries. This version must
only be called from the :py:mod:`twisted` main loop; *i.e.* from a
callback added with ``reactor.callFromThread()``
Can be called with 1, 2, or 3 arguments. The forms are
* ``_add(value)``
* ``_add(time, value)``
* ``_add(time, value, seqno)``
:raises SmapException: if the value's type does not match the stream
type, or was called with an invalid number of arguments.
"""
seqno = None
if len(args) == 1:
time = util.now()
if self.milliseconds: time *= 1000
value = args[0]
elif len(args) == 2:
time, value = args
elif len(args) == 3:
time, value, seqno = args
else:
raise SmapException("Invalid add arguments: must be (value), "
"(time, value), or (time, value, seqno)")
# note that we got data now
self.inst.statslog.mark()
time = int(time)
if not self.milliseconds:
time *= 1000
if not self._check_type(value):
raise SmapException("Attempted to add " + str(value) +
" to Timeseries, but " +
"the timeseries type is " +
self.__getitem__('Properties')['ReadingType'])
if seqno: reading = time, value, seqno
else: reading = time, value
self["Readings"].append(reading)
if not hasattr(self, 'inst'): return
# if a timeseries is dirty, we need to republish all of its
# metadata before we publish it so stream is right. some of
# this may have already been published, in which case it won't
# actually do anything.
if self.dirty:
split_path = util.split_path(getattr(self, 'path'))
for i in xrange(0, len(split_path)):
path_seg = util.join_path(split_path[:i])
self.inst.reports.publish(path_seg,
self.inst.get_collection(path_seg))
rpt = dict(self)
rpt['Readings'] = [reading]
self.inst.reports.publish(getattr(self, 'path'), rpt)
self.dirty = False
else:
# publish a stripped-down Timeseries object
self.inst.reports.publish(getattr(self, 'path'), {
'uuid': self['uuid'],
'Readings': [reading]
})