def cov_io(self, context, value_array, comp_val=None):
pdict = ParameterDictionary()
time = ParameterContext(
name='time', param_type=QuantityType(value_encoding=np.float64))
pdict.add_context(context)
pdict.add_context(time, True)
# Construct temporal and spatial Coordinate Reference System objects
tcrs = CRS([AxisTypeEnum.TIME])
scrs = CRS([AxisTypeEnum.LON, AxisTypeEnum.LAT])
# Construct temporal and spatial Domain objects
tdom = GridDomain(GridShape('temporal', [0]), tcrs,
MutabilityEnum.EXTENSIBLE) # 1d (timeline)
sdom = GridDomain(GridShape('spatial',
[0]), scrs, MutabilityEnum.IMMUTABLE
) # 0d spatial topology (station/trajectory)
# Instantiate the SimplexCoverage providing the ParameterDictionary, spatial Domain and temporal Domain
cov = SimplexCoverage('test_data',
create_guid(),
'sample coverage_model',
parameter_dictionary=pdict,
temporal_domain=tdom,
spatial_domain=sdom)
self.addCleanup(shutil.rmtree, cov.persistence_dir)
cov.insert_timesteps(len(value_array))
cov.set_parameter_values('test',
tdoa=slice(0, len(value_array)),
value=value_array)
comp_val = comp_val if comp_val is not None else value_array
testval = cov.get_parameter_values('test')
try:
np.testing.assert_array_equal(testval, comp_val)
except:
print repr(value_array)
raise
def repair(self,
backup=True,
copy_over=True,
keep_temp=False,
reanalyze=False,
analyze_bricks=False,
detailed_analysis=False):
"""
Heavy repair tool that recreates a blank persisted Coverage from the broken coverage's
original construction parameters, then reconstructs the Master and Parameter metadata
files by inspection of the ION objects and "valid" brick files.
@return:
"""
if self._ar is None or reanalyze:
self._ar = self._do_analysis(analyze_bricks=analyze_bricks,
detailed_analysis=detailed_analysis)
if self._ar.is_corrupt:
if len(self._ar.get_brick_corruptions()) > 0:
raise NotImplementedError(
'Brick corruption. Cannot repair at this time!!!')
else:
# Repair the Master and Parameter metadata files
# Need the ParameterDictionary, TemporalDomain and SpatialDomain
pdict = ParameterDictionary.load(
self._dso.parameter_dictionary)
tdom = GridDomain.load(self._dso.temporal_domain)
sdom = GridDomain.load(self._dso.spatial_domain)
# Set up the working directory for the recovered coverage
tempcov_dir = tempfile.mkdtemp('covs')
# Create the temporary Coverage
tempcov = SimplexCoverage(root_dir=tempcov_dir,
persistence_guid=self._guid,
name=self._guid,
parameter_dictionary=pdict,
spatial_domain=sdom,
temporal_domain=tdom)
# Handle to persistence layer for tempcov
pl = tempcov._persistence_layer
# Set up the original and temporary coverage path strings
orig_dir = os.path.join(self.cov_pth, self._guid)
temp_dir = os.path.join(tempcov.persistence_dir,
tempcov.persistence_guid)
# Insert same number of timesteps into temporary coverage as in broken coverage
brick_domains_new, new_brick_list, brick_list_spans, tD, bD, min_data_bound, max_data_bound = self.inspect_bricks(
self.cov_pth, self._guid, 'time')
empty_cov = brick_list_spans is None # If None, there are no brick files --> no timesteps, empty coverage!
if not empty_cov: # If None, there are no brick files --> no timesteps, empty coverage!
bls = [s.value for s in brick_list_spans]
maxes = [sum(b[3]) for b in new_brick_list.values()]
tempcov.insert_timesteps(sum(maxes))
# Replace metadata is the Master file
pl.master_manager.brick_domains = brick_domains_new
pl.master_manager.brick_list = new_brick_list
# Repair ExternalLinks to brick files
f = h5py.File(pl.master_manager.file_path, 'a')
for param_name in pdict.keys():
del f[param_name]
f.create_group(param_name)
for brick in bls:
link_path = '/{0}/{1}'.format(param_name, brick[0])
brick_file_name = '{0}.hdf5'.format(brick[0])
brick_rel_path = os.path.join(
pl.parameter_metadata[param_name].root_dir.
replace(tempcov.persistence_dir,
'.'), brick_file_name)
log.debug('link_path: %s', link_path)
log.debug('brick_rel_path: %s', brick_rel_path)
pl.master_manager.add_external_link(
link_path, brick_rel_path, brick[0])
pl.flush_values()
pl.flush()
tempcov.close()
# Remove 'rtree' dataset from Master file if it already exists (post domain expansion)
# to make way for reconstruction
f = h5py.File(pl.master_manager.file_path, 'a')
if 'rtree' in f.keys():
del f['rtree']
f.close()
# Reconstruct 'rtree' dataset
# Open temporary Coverage and PersistenceLayer objects
fixed_cov = AbstractCoverage.load(tempcov.persistence_dir,
mode='a')
pl_fixed = fixed_cov._persistence_layer
# Call update_rtree for each brick using PersistenceLayer builtin
brick_count = 0
if not empty_cov:
for brick in bls:
rtree_extents, brick_extents, brick_active_size = pl_fixed.calculate_extents(
brick[1][1], bD, tD)
pl_fixed.master_manager.update_rtree(brick_count,
rtree_extents,
obj=brick[0])
brick_count += 1
# Update parameter_bounds property based on each parameter's brick data using deep inspection
valid_bounds_types = [
'BooleanType', 'ConstantType', 'QuantityType',
'ConstantRangeType'
]
if not empty_cov:
for param in pdict.keys():
if pdict.get_context(
param
).param_type.__class__.__name__ in valid_bounds_types:
brick_domains_new, new_brick_list, brick_list_spans, tD, bD, min_data_bound, max_data_bound = self.inspect_bricks(
self.cov_pth, self._guid, param)
# Update the metadata
pl_fixed.update_parameter_bounds(
param, [min_data_bound, max_data_bound])
pl_fixed.flush()
fixed_cov.close()
# Create backup copy of original Master and Parameter files
if backup:
import datetime
orig_master_file = os.path.join(
self.cov_pth, '{0}_master.hdf5'.format(self._guid))
# Generate the timestamp
tstamp_format = '%Y%m%d%H%M%S'
tstamp = datetime.datetime.now().strftime(tstamp_format)
backup_master_file = os.path.join(
self.cov_pth,
'{0}_master.{1}.hdf5'.format(self._guid, tstamp))
shutil.copy2(orig_master_file, backup_master_file)
for param in pdict.keys():
param_orig = os.path.join(orig_dir, param,
'{0}.hdf5'.format(param))
param_backup = os.path.join(
orig_dir, param,
'{0}.{1}.hdf5'.format(param, tstamp))
shutil.copy2(param_orig, param_backup)
# Copy Master and Parameter metadata files back to original/broken coverage (cov_pth) location
if copy_over == True:
shutil.copy2(
os.path.join(tempcov.persistence_dir,
'{0}_master.hdf5'.format(self._guid)),
os.path.join(self.cov_pth,
'{0}_master.hdf5'.format(self._guid)))
for param in pdict.keys():
shutil.copy2(
os.path.join(temp_dir, param,
'{0}.hdf5'.format(param)),
os.path.join(orig_dir, param,
'{0}.hdf5'.format(param)))
# Reanalyze the repaired coverage
self._ar = self._do_analysis(analyze_bricks=True)
# Verify repair worked, clean up if not
if self._ar.is_corrupt:
# If the files were backed up then revert
if backup:
# Remove backed up files and clean up the repair attempt
log.info(
'Repair attempt failed. Reverting to pre-repair state.'
)
# Use backup copy to replace post-repair file.
shutil.copy2(backup_master_file, orig_master_file)
# Delete the backup
os.remove(backup_master_file)
# Iterate over parameters and revert to pre-repair state
for param in pdict.keys():
param_orig = os.path.join(orig_dir, param,
'{0}.hdf5'.format(param))
param_backup = os.path.join(
orig_dir, param,
'{0}.{1}.hdf5'.format(param, tstamp))
# Use backup copy to replace post-repair file.
shutil.copy2(param_backup, param_orig)
# Delete the backup
os.remove(param_backup)
raise ValueError(
'Coverage repair failed! Revert to stored backup version, if possible.'
)
# Remove temporary coverage
if keep_temp == False:
shutil.rmtree(tempcov_dir)
else:
return tempcov_dir
else:
log.info('Coverage is not corrupt, nothing to repair!')
