Files
superset2/superset/utils/cache.py
Craig Rueda e490414484 Flask App factory PR #1 (#8418)
* First cut at app factory

* Setting things back to master

* Working with new FLASK_APP

* Still need to refactor Celery

* CLI mostly working

* Working on unit tests

* Moving cli stuff around a bit

* Removing get in config

* Defaulting test config

* Adding flask-testing

* flask-testing casing

* resultsbackend property bug

* Fixing up cli

* Quick fix for KV api

* Working on save slice

* Fixed core_tests

* Fixed utils_tests

* Most tests working - still need to dig into remaining app_context issue in tests

* All tests passing locally - need to update code comments

* Fixing dashboard tests again

* Blacking

* Sorting imports

* linting

* removing envvar mangling

* blacking

* Fixing unit tests

* isorting

* licensing

* fixing mysql tests

* fixing cypress?

* fixing .flaskenv

* fixing test app_ctx

* fixing cypress

* moving manifest processor around

* moving results backend manager around

* Cleaning up __init__ a bit more

* Addressing PR comments

* Addressing PR comments

* Blacking

* Fixes for running celery worker

* Tuning isort

* Blacking
2019-11-20 15:47:06 +00:00

78 lines
2.8 KiB
Python

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, 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.
# pylint: disable=C,R,W
from typing import Optional
from flask import Flask, request
from flask_caching import Cache
from superset.extensions import cache_manager
def view_cache_key(*unused_args, **unused_kwargs) -> str:
args_hash = hash(frozenset(request.args.items()))
return "view/{}/{}".format(request.path, args_hash)
def memoized_func(key=view_cache_key, attribute_in_key=None):
"""Use this decorator to cache functions that have predefined first arg.
enable_cache is treated as True by default,
except enable_cache = False is passed to the decorated function.
force means whether to force refresh the cache and is treated as False by default,
except force = True is passed to the decorated function.
timeout of cache is set to 600 seconds by default,
except cache_timeout = {timeout in seconds} is passed to the decorated function.
memoized_func uses simple_cache and stored the data in memory.
Key is a callable function that takes function arguments and
returns the caching key.
"""
def wrap(f):
if cache_manager.tables_cache:
def wrapped_f(self, *args, **kwargs):
if not kwargs.get("cache", True):
return f(self, *args, **kwargs)
if attribute_in_key:
cache_key = key(*args, **kwargs).format(
getattr(self, attribute_in_key)
)
else:
cache_key = key(*args, **kwargs)
o = cache_manager.tables_cache.get(cache_key)
if not kwargs.get("force") and o is not None:
return o
o = f(self, *args, **kwargs)
cache_manager.tables_cache.set(
cache_key, o, timeout=kwargs.get("cache_timeout")
)
return o
else:
# noop
def wrapped_f(self, *args, **kwargs):
return f(self, *args, **kwargs)
return wrapped_f
return wrap