diff --git a/synapse/util/async_helpers.py b/synapse/util/async_helpers.py
index f1c46836b1..0d3bdd88ce 100644
--- a/synapse/util/async_helpers.py
+++ b/synapse/util/async_helpers.py
@@ -13,9 +13,11 @@
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
+
import collections
import logging
from contextlib import contextmanager
+from typing import Dict, Sequence, Set, Union
from six.moves import range
@@ -213,7 +215,9 @@ class Linearizer(object):
# the first element is the number of things executing, and
# the second element is an OrderedDict, where the keys are deferreds for the
# things blocked from executing.
- self.key_to_defer = {}
+ self.key_to_defer = (
+ {}
+ ) # type: Dict[str, Sequence[Union[int, Dict[defer.Deferred, int]]]]
def queue(self, key):
# we avoid doing defer.inlineCallbacks here, so that cancellation works correctly.
@@ -340,10 +344,10 @@ class ReadWriteLock(object):
def __init__(self):
# Latest readers queued
- self.key_to_current_readers = {}
+ self.key_to_current_readers = {} # type: Dict[str, Set[defer.Deferred]]
# Latest writer queued
- self.key_to_current_writer = {}
+ self.key_to_current_writer = {} # type: Dict[str, defer.Deferred]
@defer.inlineCallbacks
def read(self, key):
diff --git a/synapse/util/caches/__init__.py b/synapse/util/caches/__init__.py
index b50e3503f0..43fd65d693 100644
--- a/synapse/util/caches/__init__.py
+++ b/synapse/util/caches/__init__.py
@@ -16,6 +16,7 @@
import logging
import os
+from typing import Dict
import six
from six.moves import intern
@@ -37,7 +38,7 @@ def get_cache_factor_for(cache_name):
caches_by_name = {}
-collectors_by_name = {}
+collectors_by_name = {} # type: Dict
cache_size = Gauge("synapse_util_caches_cache:size", "", ["name"])
cache_hits = Gauge("synapse_util_caches_cache:hits", "", ["name"])
diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py
index 43f66ec4be..5ac2530a6a 100644
--- a/synapse/util/caches/descriptors.py
+++ b/synapse/util/caches/descriptors.py
@@ -18,10 +18,12 @@ import inspect
import logging
import threading
from collections import namedtuple
+from typing import Any, cast
from six import itervalues
from prometheus_client import Gauge
+from typing_extensions import Protocol
from twisted.internet import defer
@@ -37,6 +39,18 @@ from . import register_cache
logger = logging.getLogger(__name__)
+class _CachedFunction(Protocol):
+ invalidate = None # type: Any
+ invalidate_all = None # type: Any
+ invalidate_many = None # type: Any
+ prefill = None # type: Any
+ cache = None # type: Any
+ num_args = None # type: Any
+
+ def __name__(self):
+ ...
+
+
cache_pending_metric = Gauge(
"synapse_util_caches_cache_pending",
"Number of lookups currently pending for this cache",
@@ -245,7 +259,9 @@ class Cache(object):
class _CacheDescriptorBase(object):
- def __init__(self, orig, num_args, inlineCallbacks, cache_context=False):
+ def __init__(
+ self, orig: _CachedFunction, num_args, inlineCallbacks, cache_context=False
+ ):
self.orig = orig
if inlineCallbacks:
@@ -404,7 +420,7 @@ class CacheDescriptor(_CacheDescriptorBase):
return tuple(get_cache_key_gen(args, kwargs))
@functools.wraps(self.orig)
- def wrapped(*args, **kwargs):
+ def _wrapped(*args, **kwargs):
# If we're passed a cache_context then we'll want to call its invalidate()
# whenever we are invalidated
invalidate_callback = kwargs.pop("on_invalidate", None)
@@ -440,6 +456,8 @@ class CacheDescriptor(_CacheDescriptorBase):
return make_deferred_yieldable(observer)
+ wrapped = cast(_CachedFunction, _wrapped)
+
if self.num_args == 1:
wrapped.invalidate = lambda key: cache.invalidate(key[0])
wrapped.prefill = lambda key, val: cache.prefill(key[0], val)
diff --git a/synapse/util/caches/treecache.py b/synapse/util/caches/treecache.py
index 9a72218d85..2ea4e4e911 100644
--- a/synapse/util/caches/treecache.py
+++ b/synapse/util/caches/treecache.py
@@ -1,3 +1,5 @@
+from typing import Dict
+
from six import itervalues
SENTINEL = object()
@@ -12,7 +14,7 @@ class TreeCache(object):
def __init__(self):
self.size = 0
- self.root = {}
+ self.root = {} # type: Dict
def __setitem__(self, key, value):
return self.set(key, value)
diff --git a/synapse/util/metrics.py b/synapse/util/metrics.py
index 0910930c21..4b1bcdf23c 100644
--- a/synapse/util/metrics.py
+++ b/synapse/util/metrics.py
@@ -60,12 +60,14 @@ in_flight = InFlightGauge(
)
-def measure_func(name):
+def measure_func(name=None):
def wrapper(func):
+ block_name = func.__name__ if name is None else name
+
@wraps(func)
@defer.inlineCallbacks
def measured_func(self, *args, **kwargs):
- with Measure(self.clock, name):
+ with Measure(self.clock, block_name):
r = yield func(self, *args, **kwargs)
return r
diff --git a/synapse/util/module_loader.py b/synapse/util/module_loader.py
index 7ff7eb1e4d..2705cbe5f8 100644
--- a/synapse/util/module_loader.py
+++ b/synapse/util/module_loader.py
@@ -54,5 +54,5 @@ def load_python_module(location: str):
if spec is None:
raise Exception("Unable to load module at %s" % (location,))
mod = importlib.util.module_from_spec(spec)
- spec.loader.exec_module(mod)
+ spec.loader.exec_module(mod) # type: ignore
return mod
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