def _copyData(inFile, outFile, totalSize):
bytesToRead = totalSize
while totalSize > 0:
toRead = min(BUFFER_SIZE, totalSize)
try:
data = inFile.read(toRead)
except IOError as e:
error = "error reading file: %s" % e
log.error(error)
raise se.MiscFileReadException(error)
if not data:
error = "partial data %s from %s" % \
(bytesToRead - totalSize, bytesToRead)
log.error(error)
raise se.MiscFileReadException(error)
outFile.write(data)
# outFile may not be a real file object but a wrapper.
# To ensure that we don't use more memory as the input buffer size
# we flush on every write.
outFile.flush()
totalSize = totalSize - len(data)
def delay(self):
# TODO: Raising MiscFileReadException for all errors to keep the old
# behavior. Should probably use StorageDomainAccessError.
if self.rc != 0:
raise exception.MiscFileReadException(self.path, self.rc, self.err)
if not self.err:
raise exception.MiscFileReadException(self.path, "no stats")
stats = self.err.splitlines()[-1]
match = self._PATTERN.match(stats)
if not match:
raise exception.MiscFileReadException(self.path,
"no match: %r" % stats)
seconds = match.group(1)
try:
return float(seconds)
except ValueError as e:
raise exception.MiscFileReadException(self.path, e)