def get_mnemonic(mnemonic_identifier, start_time, end_time):
"""Execute query and return a EdbMnemonic instance.
The underlying MAST service returns data that include the
datapoint preceding the requested start time and the datapoint
that follows the requested end time.
Parameters
----------
mnemonic_identifier : str
Telemetry mnemonic identifiers, e.g. 'SA_ZFGOUTFOV'
start_time : astropy.time.Time instance
Start time
end_time : astropy.time.Time instance
End time
Returns
-------
mnemonic : instance of EdbMnemonic
EdbMnemonic object containing query results
"""
mast_token = get_mast_token()
data, meta, info = query_single_mnemonic(mnemonic_identifier,
start_time,
end_time,
token=mast_token)
# create and return instance
mnemonic = EdbMnemonic(mnemonic_identifier, start_time, end_time, data,
meta, info)
return mnemonic
def get_mnemonic_info(mnemonic_identifier):
"""Return the mnemonic description.
Parameters
----------
mnemonic_identifier : str
Telemetry mnemonic identifier, e.g. ``SA_ZFGOUTFOV``
Returns
-------
info : dict
Object that contains the returned data
"""
mast_token = get_mast_token()
return query_mnemonic_info(mnemonic_identifier, token=mast_token)
def log_into_mast(request):
"""Login via astroquery.mast if user authenticated in web app.
Parameters
----------
request : HttpRequest object
Incoming request from the webpage
"""
if Mast.authenticated():
return True
# get the MAST access token if present
access_token = str(get_mast_token(request))
# authenticate with astroquery.mast if necessary
if access_token != 'None':
Mast.login(token=access_token)
return Mast.authenticated()
else:
return False