# Copyright (c) 2016, System Engineering Software Society
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from __future__ import (print_function, division, unicode_literals,
absolute_import)
import os
import re
import numpy as np
import warnings
import datetime
from collections import OrderedDict
from sylib import atfx
from sympathy.api import table
from sympathy.api import importers
[docs]class DataImportATFX(importers.ADAFDataImporterBase):
"""Import exported ATFX data into AFAF format."""
IMPORTER_NAME = 'ATFX'
def __init__(self, fq_in_filename, parameters):
super(DataImportATFX, self).__init__(fq_in_filename, parameters)
self._adaf = None
self._asamatf = None
self.DATA_WRITER_DICT = {}
def name(self):
return self.IMPORTER_NAME
def valid_for_file(self):
if self._fq_infilename is None or not os.path.isfile(
self._fq_infilename):
return False
sample_size = 256
result = False
with open(self._fq_infilename, 'rb') as f:
string = f.read(sample_size)
result = re.findall(b'atfx_file', string) != []
return result
def import_data(self, out_adaffile, parameters=None, progress=None):
def check_comps(root, comps):
"""
Check for existence of the binary files connected to the considered
atf-file.
"""
for key, comp in comps.items():
filename = os.path.join(root, comp['filename'])
if not os.path.isfile(filename):
warnings.warn(
'The file {0} could not be found'.format(filename))
# Outgoing ADAF structure.
self._adaf = out_adaffile
fq_infilename = os.path.abspath(self._fq_infilename)
self._model = atfx.ApplicationModel(fq_infilename)
self._dirname = os.path.abspath(os.path.dirname(fq_infilename))
self._comps = self._model.components()
check_comps(self._dirname, self._comps)
exporter = self._model.documentation().get('exporter', 'ATFX')
system = self._adaf.sys.create(exporter)
# Loop over the existing tests.
meass = self._model.instances('AoMeasurement')
meas_names = [meas.name() for meas in meass]
count = dict.fromkeys(meas_names, 0)
for meas_name in meas_names:
count[meas_name] += 1
meas_offset = {key: 0 if value > 1 else None
for key, value in count.items()}
for meas in meass:
test = meas
try:
while True:
test = test.test()
except AttributeError:
pass
for key, value in sorted(test.get_attrs().items()):
out_adaffile.meta.create_column(
'{}_Test_{}'.format(exporter, key), np.array([value]))
for meas in meass:
self.add_meas(meas, meas_offset, system)
out_adaffile.set_source_id(os.path.basename(fq_infilename))
def add_meas(self, meas, meas_offset, system):
meas_name = meas.name()
rasters_dict = OrderedDict()
indep_dict = {}
for meas_quantity in (
meas.measurement_quantities()):
quantity_name = meas_quantity.name()
try:
data, attributes = self.get_quantity(meas_quantity)
except IOError:
warnings.warn(
'quantity:{} could not be read'.format(quantity_name))
continue
for submatrix_id, (indep, array) in data:
raster = rasters_dict.setdefault(
(submatrix_id, meas_name), table.File())
raster.set_column_from_array(
quantity_name, array, attributes)
if indep:
indep_dict[(submatrix_id, meas_name)] = quantity_name
offset = meas_offset[meas_name]
many = len(rasters_dict) > 1 or offset is not None
for i, ((submatrix_id, meas_name), raster) in enumerate(
rasters_dict.items()):
i += offset or 0
if meas_name in self.DATA_WRITER_DICT:
self.DATA_WRITER_DICT[meas_name](raster, self._adaf)
else:
table_attributes = raster.get_table_attributes() or {}
try:
table_attributes[
'reference_time'] = datetime.datetime.strptime(
meas.measurement_begin(),
'%Y%m%d%H%M%S%f').isoformat()
except (AttributeError, KeyError, ValueError, TypeError):
pass
raster.set_table_attributes(table_attributes)
timebasis_name = None
indep_name = indep_dict.get((submatrix_id, meas_name))
if indep_name:
timebasis_name = indep_name
elif 'Time' in raster:
timebasis_name = 'Time'
if timebasis_name is None:
timebasis_name = 'Time'
# Timeseries with no basis, create index basis.
raster.set_column_from_array(
timebasis_name,
np.zeros(raster.number_of_rows(), dtype=float))
else:
try:
column = raster.get_column_to_array(timebasis_name)
sampling_rate = column[1] - column[0]
attributes = raster.get_column_attributes(
timebasis_name)
attributes['sampling_rate'] = sampling_rate
raster.set_column_attributes(
timebasis_name, attributes)
except (KeyError, IndexError):
pass
if many:
new_raster = system.create(
'{}{}'.format(meas_name, i))
else:
new_raster = system.create(meas_name)
new_raster.from_table(raster, timebasis_name)
if offset is not None:
meas_offset[meas_name] += 1
def get_quantity(self, meas_quantity):
return (self.get_quantity_data(meas_quantity),
self.get_quantity_attributes(meas_quantity))
def get_quantity_attributes(self, meas_quantity):
attributes = {}
try:
quantity = meas_quantity.quantity()
attributes['description'] = quantity.description()
except (KeyError, StopIteration, AttributeError):
pass
try:
unit = meas_quantity.unit()
attributes['unit'] = unit.name()
except (KeyError, StopIteration, AttributeError):
pass
return attributes
def get_localcolumn_data(self, localcolumn):
representation = localcolumn.sequence_representation()
if isinstance(representation, int):
representation = atfx.sequence_representation_enum[representation]
if representation == 'explicit':
dtype, values = localcolumn.values()
if dtype == 'component':
values_dict = dict(values)
for key in ['blocksize',
'valperblock',
'inioffset',
'length']:
try:
value = int(values_dict[key])
except KeyError:
value = None
values_dict[key] = value
data_type = values_dict['datatype']
values_dict['type'] = data_type
values_dict['valoffsets'] = [int(x) for x in
values_dict['valoffsets'].split()]
filename = self._comps[
values_dict.get('identifier')]['filename']
values = atfx.binary_to_array(
self._dirname, filename, values_dict)
return atfx.dt_to_array(data_type, values)
else:
return atfx.values_dict[dtype](values)
elif representation == 'implicit_linear':
try:
dtype, values = localcolumn.values()
except KeyError:
dtype = 'A_FLOAT64'
values = localcolumn.generation_parameters()
values = atfx.values_dict[dtype](values)
offset, step = values
no_rows = localcolumn.submatrix().number_of_rows()
return np.arange(no_rows, dtype='f8') * step + offset
elif representation == 'external_component':
external = localcolumn.external_component()
filename = external.filename_url()
data_type = external.value_type()
values = {'blocksize': external.block_size(),
'valperblock': external.valuesperblock(),
'inioffset': external.start_offset(),
'length': external.component_length(),
'type': data_type,
'valoffsets': [external.value_offset()],
'component': filename}
values = atfx.binary_to_array(self._dirname, filename, values)
else:
raise Exception(
'Unknown representation: {}'.format(representation))
return atfx.dt_to_array(data_type, values)
def get_quantity_data(self, meas_quantity):
data_list = []
try:
localcolumns = meas_quantity.local_columns()
except KeyError:
warnings.warn(
'Failed to get localcolumns for meas_quantity:{}'.
format(meas_quantity.id()))
localcolumns = []
for localcolumn in localcolumns:
try:
data_list.append((localcolumn.submatrix().id(),
(localcolumn.independent(),
self.get_localcolumn_data(localcolumn))))
except KeyError:
raise
warnings.warn('Failed processing localcolumn:{}'.format(
localcolumn.id()))
return data_list
