def _get_manifest_from_disk(self):
with _ChDir(self.data_dir):
# This could be the first run or an accidental deletion of the
# cached version manifest.
if os.path.exists(self.version_file):
filename = self.version_file
elif os.path.exists(self.version_file_compat):
filename = self.version_file_compat
else:
return None
log.debug("Found version file on file system")
# Attempt to open the cached version file
try:
with open(filename, "rb") as f:
data = f.read()
log.debug("Loaded version file from file system")
except Exception as err:
log.debug("Failed to load version file from file " "system")
log.debug(err, exc_info=True)
return None
# Attempt the decompress
try:
decompressed_data = _gzip_decompress(data)
except Exception as err:
log.debug(err)
return None
return decompressed_data
def _get_manifest_from_disk(self):
with _ChDir(self.data_dir):
# This could be the first run or an accidental deletion of the
# cached version manifest.
if not os.path.exists(self.version_file):
log.debug('No version file on file system')
return None
else:
log.debug('Found version file on file system')
# Attempt to open the cached version file
try:
with open(self.version_file, 'rb') as f:
data = f.read()
log.debug('Loaded version file from file system')
except Exception as err:
log.debug('Failed to load version file from file '
'system')
log.debug(err, exc_info=True)
return None
# Attempt the decompress
try:
decompressed_data = _gzip_decompress(data)
except Exception as err:
log.debug(err)
return None
return decompressed_data
def _get_manifest_from_disk(self):
with _ChDir(self.data_dir):
# This could be the first run or an accidental deletion of the
# cached version manifest.
if not os.path.exists(self.version_file):
log.debug('No version file on file system')
return None
else:
log.debug('Found version file on file system')
# Attempt to open the cached version file
try:
with open(self.version_file, 'rb') as f:
data = f.read()
log.debug('Loaded version file from file system')
except Exception as err:
log.debug('Failed to load version file from file '
'system')
log.debug(err, exc_info=True)
return None
# Attempt the decompress
try:
decompressed_data = _gzip_decompress(data)
except Exception as err:
log.debug(err)
return None
return decompressed_data
def _get_manifest_filesystem(self):
data = None
with _ChDir(self.data_dir):
if not os.path.exists(self.version_file):
log.debug('No version file on file system')
return data
else:
log.debug('Found version file on file system')
try:
with open(self.version_file, 'rb') as f:
data = f.read()
log.debug('Loaded version file from file system')
except Exception as err:
# Whatever the error data is already set to None
log.debug('Failed to load version file from file '
'system')
log.debug(err, exc_info=True)
# In case we don't have any data to pass
# Catch the error here and just return None
try:
decompressed_data = _gzip_decompress(data)
except Exception as err:
decompressed_data = None
return decompressed_data
def _write_manifest_to_filesystem(self, data, filename):
with _ChDir(self.data_dir):
log.debug("Writing %s file to disk", filename)
with gzip.open(filename, "wb") as f:
f.write(data)
def _write_manifest_2_filesystem(self, data):
with _ChDir(self.data_dir):
log.debug('Writing version file to disk')
with gzip.open(self.version_file, 'wb') as f:
f.write(data)
def _write_manifest_2_filesystem(self, data):
with _ChDir(self.data_dir):
log.debug('Writing version file to disk')
with gzip.open(self.version_file, 'wb') as f:
f.write(data)
