本文整理汇总了Python中interface.services.dm.ipubsub_management_service.PubsubManagementServiceProcessClient.find_stream_definition方法的典型用法代码示例。如果您正苦于以下问题：Python PubsubManagementServiceProcessClient.find_stream_definition方法的具体用法？Python PubsubManagementServiceProcessClient.find_stream_definition怎么用？Python PubsubManagementServiceProcessClient.find_stream_definition使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类interface.services.dm.ipubsub_management_service.PubsubManagementServiceProcessClient的用法示例。
在下文中一共展示了PubsubManagementServiceProcessClient.find_stream_definition方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: LastUpdateCache
# 需要导入模块: from interface.services.dm.ipubsub_management_service import PubsubManagementServiceProcessClient [as 别名]
# 或者: from interface.services.dm.ipubsub_management_service.PubsubManagementServiceProcessClient import find_stream_definition [as 别名]
class LastUpdateCache(TransformDataProcess):
def __init__(self, *args, **kwargs):
super(LastUpdateCache, self).__init__()
self.def_cache = {}
def on_start(self):
super(LastUpdateCache, self).on_start()
self.couch_config = self.CFG.get('couch_storage')
#self.datastore_name = self.couch_config.get('datastore_name','dm_cache')
self.datastore_name = CACHE_DATASTORE_NAME
try:
self.datastore_profile = getattr(DataStore.DS_PROFILE,self.couch_config.get('datastore_profile','SCIDATA'))
except AttributeError:
self.datastore_profile = DataStore.DS_PROFILE.SCIDATA
self.db = self.container.datastore_manager.get_datastore(ds_name=self.datastore_name,
profile=self.datastore_profile)
self.ps_cli = PubsubManagementServiceProcessClient(process=self)
def process(self, packet):
if isinstance(packet,StreamGranuleContainer):
granule = packet
lu = self.db._ion_object_to_persistence_dict(self.get_last_value(granule))
try:
doc = self.db.read_doc(granule.stream_resource_id)
doc_id = doc.id
doc_rev = doc.rev
except NotFound:
log.debug('Creating...')
doc_id, doc_rev = self.db.create_doc(lu,object_id=granule.stream_resource_id)
lu['_id'] = doc_id
lu['_rev'] = doc_rev
self.db.update_doc(lu)
else:
log.info('Unknown packet type %s' % str(type(packet)))
return
def get_last_value(self,granule):
stream_resource_id = granule.stream_resource_id
if not self.def_cache.has_key(stream_resource_id):
stream_def = self.ps_cli.find_stream_definition(stream_id=stream_resource_id, id_only=False)
self.def_cache[stream_resource_id] = stream_def.container
definition = self.def_cache[stream_resource_id]
psp = PointSupplementStreamParser(stream_definition=definition, stream_granule=granule)
fields = psp.list_field_names()
lu = LastUpdate()
lu.timestamp = granule.identifiables[granule.data_stream_id].timestamp.value
for field in fields:
range_id = definition.identifiables[field].range_id
lu.variables[field] = Variable()
if definition.identifiables.has_key(field):
lu.variables[field].definition = definition.identifiables[field].definition
if definition.identifiables.has_key(range_id):
lu.variables[field].units = definition.identifiables[range_id].unit_of_measure.code
lu.variables[field].value = float(psp.get_values(field_name=field)[-1])
return lu