11 """Read data for a particular sensor from the standard format at a particular root. 16 Path to the top level of the data tree. This is expected to hold directories 17 named after the sensor names. They are expected to be lower case. 19 The name of the sensor for which to read data. 21 The identifier for the sensor in question. 26 A dictionary of objects constructed from the appropriate factory class. 27 The key is the validity start time as a `datetime` object. 29 factory_map = {
'qe_curve': Curve,
'defects': Defects,
'linearizer': Linearizer}
31 extensions = (
".ecsv",
".yaml")
32 for ext
in extensions:
33 files.extend(glob.glob(os.path.join(root, chip_name, f
"*{ext}")))
34 parts = os.path.split(root)
35 instrument = os.path.split(parts[0])[1]
37 if data_name
not in factory_map:
38 raise ValueError(f
"Unknown calibration data type, '{data_name}' found. " 39 f
"Only understand {','.join(k for k in factory_map)}")
40 factory = factory_map[data_name]
43 date_str = os.path.splitext(os.path.basename(f))[0]
44 valid_start = dateutil.parser.parse(date_str)
45 data_dict[valid_start] = factory.readText(f)
46 check_metadata(data_dict[valid_start], valid_start, instrument, chip_id, f, data_name)
47 return data_dict, data_name
50 def check_metadata(obj, valid_start, instrument, chip_id, filepath, data_name):
51 """Check that the metadata is complete and self consistent 55 obj : object of same type as the factory 56 Object to retrieve metadata from in order to compare with 57 metadata inferred from the path. 58 valid_start : `datetime` 59 Start of the validity range for data 61 Name of the instrument in question 63 Identifier of the sensor in question 65 Path of the file read to construct the data 67 Name of the type of data being read 76 If the metadata from the path and the metadata encoded 77 in the path do not match for any reason. 79 md = obj.getMetadata()
80 finst = md[
'INSTRUME']
81 fchip_id = md[
'DETECTOR']
82 fdata_name = md[
'OBSTYPE']
83 if not ((finst.lower(), int(fchip_id), fdata_name)
84 == (instrument.lower(), chip_id, data_name)):
85 raise ValueError(f
"Path and file metadata do not agree:\n" 86 f
"Path metadata: {instrument} {chip_id} {data_name}\n" 87 f
"File metadata: {finst} {fchip_id} {fdata_name}\n" 88 f
"File read from : %s\n"%(filepath)
93 """Read all data from the standard format at a particular root. 98 Path to the top level of the data tree. This is expected to hold directories 99 named after the sensor names. They are expected to be lower case. 100 camera : `lsst.afw.cameraGeom.Camera` 101 The camera that goes with the data being read. 106 A dictionary of dictionaries of objects constructed with the appropriate factory class. 107 The first key is the sensor name lowered, and the second is the validity 108 start time as a `datetime` object. 112 Each leaf object in the constructed dictionary has metadata associated with it. 113 The detector ID may be retrieved from the DETECTOR entry of that metadata. 115 root = os.path.normpath(root)
116 dirs = os.listdir(root)
117 dirs = [d
for d
in dirs
if os.path.isdir(os.path.join(root, d))]
119 name_map = {det.getName().lower(): det.getName()
for 123 raise RuntimeError(f
"No data found on path {root}")
127 chip_name = os.path.basename(d)
128 chip_id = camera[name_map[chip_name]].getId()
129 data_by_chip[chip_name], calib_type =
read_one_chip(root, chip_name, chip_id)
130 calib_types.add(calib_type)
131 if len(calib_types) != 1:
132 raise ValueError(f
'Error mixing calib types: {calib_types}')
134 no_data = all([v == {}
for v
in data_by_chip.values()])
136 raise RuntimeError(f
'No data to ingest')
138 return data_by_chip, calib_type
def check_metadata(obj, valid_start, instrument, chip_id, filepath, data_name)
def read_all(root, camera)
def read_one_chip(root, chip_name, chip_id)