def __init__(self, pilot_data_service=None, pilot_data_description=None, ps_url=None):
"""
Initialize PilotData at given service url:
ssh://<hostname>
gsissh://<hostname>
Currently only ssh schemes are supported. In the future all
SAGA URL schemes/adaptors should be supported.
"""
self.id = None
self.url = None
self.pilot_data_description = None
self.service_url=None
self.size = None
self.data_unit_description = None
self.data_units={}
if ps_url==None and pilot_data_service!=None: # new ps
self.id = self.PS_ID_PREFIX+str(uuid.uuid1())
self.pilot_data_description = pilot_data_description
self.url = CoordinationAdaptor.add_ps(CoordinationAdaptor.get_base_url(bigdata.application_id)+"/"+pilot_data_service.id, self)
elif ps_url != None:
logger.warn("Reconnect to PilotData: %s"%ps_url)
dictionary = CoordinationAdaptor.get_ps(ps_url)
ps_dict = dictionary["pilot_data"]
for i in ps_dict:
self.__setattr__(i, ps_dict[i])
self.initialize_pilot_data()
def create_pilot(self, pilot_data_description):
""" Create a PilotData
Keyword arguments:
pilot_data_description -- PilotData Description
{
'service_url': "ssh://<hostname>/base-url/"
'size': "1000"
}
Return value:
A PilotData handle
"""
ps = PilotData(pilot_data_service=self,
pilot_data_description=pilot_data_description)
self.pilot_data[ps.id]=ps
# store pilot store in central data space
CoordinationAdaptor.add_ps(self.url, ps)
return ps
