def test_do_not_retry_for_exception_success(self):
# Test that we retry for exceptions not specified.
client = self.make_client(
[MemcacheClientError("Whoops."), b"VALUE key 0 5\r\nvalue\r\nEND\r\n"],
attempts=2,
do_not_retry_for=tuple([MemcacheUnknownError]),
)
result = client.get("key")
assert result == b"value"
def test_retry_for_exception_success(self):
# Test that we retry for the exception specified.
client = self.make_client([
MemcacheClientError("Whoops."),
b'VALUE key 0 5\r\nvalue\r\nEND\r\n'
],
attempts=2,
retry_for=tuple([MemcacheClientError]))
result = client.get("key")
assert result == b'value'
def test_do_not_retry_for_exception_fail(self):
# Test that we do not retry for the exception specified.
client = self.make_client(
[MemcacheClientError("Whoops."), b"VALUE key 0 5\r\nvalue\r\nEND\r\n"],
attempts=2,
do_not_retry_for=tuple([MemcacheClientError]),
)
with pytest.raises(MemcacheClientError):
client.get("key")
def _raise_errors(self, line, name):
if line.startswith(b'ERROR'):
raise MemcacheUnknownCommandError(name)
if line.startswith(b'CLIENT_ERROR'):
error = line[line.find(b' ') + 1:]
raise MemcacheClientError(error)
if line.startswith(b'SERVER_ERROR'):
error = line[line.find(b' ') + 1:]
raise MemcacheServerError(error)
def test_both_exception_filters(self):
# Test interacction between both exception filters.
client = self.make_client([
MemcacheClientError("Whoops."),
b'VALUE key 0 5\r\nvalue\r\nEND\r\n',
MemcacheUnknownError("Whoops."),
b'VALUE key 0 5\r\nvalue\r\nEND\r\n',
],
attempts=2,
retry_for=tuple([MemcacheClientError]),
do_not_retry_for=tuple(
[MemcacheUnknownError]))
# Check that we succeed where allowed.
result = client.get("key")
assert result == b'value'
# Check that no retries are attempted for the banned exception.
with pytest.raises(MemcacheUnknownError):
client.get("key")
def cas(self, key, value, cas, expire=0, noreply=False, flags=None):
raise MemcacheClientError("CAS is not enabled for this instance")