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Prefer type(x) is int to isinstance(x, int) (#14945)

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* Perfer `type(x) is int` to `isinstance(x, int)`

This covered all additional instances I could see where `x` was
user-controlled.
The remaining cases are

```
$ rg -s 'isinstance.*[^_]int'
tests/replication/_base.py
576:        if isinstance(obj, int):

synapse/util/caches/stream_change_cache.py
136:        assert isinstance(stream_pos, int)
214:        assert isinstance(stream_pos, int)
246:        assert isinstance(stream_pos, int)
267:        assert isinstance(stream_pos, int)

synapse/replication/tcp/external_cache.py
133:        if isinstance(result, int):

synapse/metrics/__init__.py
100:        if isinstance(calls, (int, float)):

synapse/handlers/appservice.py
262:        assert isinstance(new_token, int)

synapse/config/_util.py
62:        if isinstance(p, int):
```

which cover metrics, logic related to `jsonschema`, and replication and
data streams. AFAICS these are all internal to Synapse

* Changelog
This commit is contained in:
David Robertson 2023-01-31 10:33:07 +00:00 • committed by GitHub
parent 510d4b06e7
commit 796a4b7482
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 75 additions and 47 deletions
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15
synapse/rest/admin/registration_tokens.py
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@ -143,7 +143,7 @@ class NewRegistrationTokenRestServlet(RestServlet):
else:
# Get length of token to generate (default is 16)
length = body.get("length", 16)
if not isinstance(length, int):
if type(length) is not int:
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"length must be an integer",
@ -163,8 +163,7 @@ class NewRegistrationTokenRestServlet(RestServlet):
uses_allowed = body.get("uses_allowed", None)
if not (
uses_allowed is None
or (isinstance(uses_allowed, int) and uses_allowed >= 0)
uses_allowed is None or (type(uses_allowed) is int and uses_allowed >= 0)
):
raise SynapseError(
HTTPStatus.BAD_REQUEST,
@ -173,13 +172,13 @@ class NewRegistrationTokenRestServlet(RestServlet):
)
expiry_time = body.get("expiry_time", None)
if not isinstance(expiry_time, (int, type(None))):
if type(expiry_time) not in (int, type(None)):
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"expiry_time must be an integer or null",
Codes.INVALID_PARAM,
)
if isinstance(expiry_time, int) and expiry_time < self.clock.time_msec():
if type(expiry_time) is int and expiry_time < self.clock.time_msec():
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"expiry_time must not be in the past",
@ -284,7 +283,7 @@ class RegistrationTokenRestServlet(RestServlet):
uses_allowed = body["uses_allowed"]
if not (
uses_allowed is None
or (isinstance(uses_allowed, int) and uses_allowed >= 0)
or (type(uses_allowed) is int and uses_allowed >= 0)
):
raise SynapseError(
HTTPStatus.BAD_REQUEST,
@ -295,13 +294,13 @@ class RegistrationTokenRestServlet(RestServlet):
if "expiry_time" in body:
expiry_time = body["expiry_time"]
if not isinstance(expiry_time, (int, type(None))):
if type(expiry_time) not in (int, type(None)):
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"expiry_time must be an integer or null",
Codes.INVALID_PARAM,
)
if isinstance(expiry_time, int) and expiry_time < self.clock.time_msec():
if type(expiry_time) is int and expiry_time < self.clock.time_msec():
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"expiry_time must not be in the past",