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import time
from datetime import datetime
from beaker.cache import CacheManager, cache_region, region_invalidate
from beaker import util
from unittest import SkipTest
defaults = {'cache.data_dir':'./cache', 'cache.type':'dbm', 'cache.expire': 2}
def teardown_module():
import shutil
shutil.rmtree('./cache', True)
@cache_region('short_term')
def fred(x):
return time.time()
@cache_region('short_term')
def george(x):
return time.time()
@cache_region('short_term')
def albert(x):
"""A doc string"""
return time.time()
@cache_region('short_term')
def alfred(x, xx, y=None):
return str(time.time()) + str(x) + str(xx) + str(y)
class AlfredCacher(object):
@cache_region('short_term')
def alfred_self(self, xx, y=None):
return str(time.time()) + str(self) + str(xx) + str(y)
try:
from .annotated_functions import AnnotatedAlfredCacher
except (ImportError, SyntaxError):
AnnotatedAlfredCacher = None
def make_cache_obj(**kwargs):
opts = defaults.copy()
opts.update(kwargs)
cache = CacheManager(**util.parse_cache_config_options(opts))
return cache
def make_cached_func(**opts):
cache = make_cache_obj(**opts)
@cache.cache()
def load(person):
now = datetime.now()
return "Hi there %s, its currently %s" % (person, now)
return cache, load
def make_region_cached_func():
opts = {}
opts['cache.regions'] = 'short_term, long_term'
opts['cache.short_term.expire'] = '2'
cache = make_cache_obj(**opts)
@cache_region('short_term', 'region_loader')
def load(person):
now = datetime.now()
return "Hi there %s, its currently %s" % (person, now)
return load
def make_region_cached_func_2():
opts = {}
opts['cache.regions'] = 'short_term, long_term'
opts['cache.short_term.expire'] = '2'
cache = make_cache_obj(**opts)
@cache_region('short_term')
def load_person(person):
now = datetime.now()
return "Hi there %s, its currently %s" % (person, now)
return load_person
def test_check_region_decorator():
func = make_region_cached_func()
result = func('Fred')
assert 'Fred' in result
result2 = func('Fred')
assert result == result2
result3 = func('George')
assert 'George' in result3
result4 = func('George')
assert result3 == result4
time.sleep(2) # Now it should have expired as cache is 2secs
result2 = func('Fred')
assert result != result2
def test_different_default_names():
result = fred(1)
time.sleep(0.1)
result2 = george(1)
assert result != result2
def test_check_invalidate_region():
func = make_region_cached_func()
result = func('Fred')
assert 'Fred' in result
result2 = func('Fred')
assert result == result2
region_invalidate(func, None, 'region_loader', 'Fred')
result3 = func('Fred')
assert result3 != result2
result2 = func('Fred')
assert result3 == result2
# Invalidate a non-existent key
region_invalidate(func, None, 'region_loader', 'Fredd')
assert result3 == result2
def test_check_invalidate_region_2():
func = make_region_cached_func_2()
result = func('Fred')
assert 'Fred' in result
result2 = func('Fred')
assert result == result2
region_invalidate(func, None, 'Fred')
result3 = func('Fred')
assert result3 != result2
result2 = func('Fred')
assert result3 == result2
# Invalidate a non-existent key
region_invalidate(func, None, 'Fredd')
assert result3 == result2
def test_invalidate_cache():
cache, func = make_cached_func()
val = func('foo')
time.sleep(0.1)
val2 = func('foo')
assert val == val2
cache.invalidate(func, 'foo')
val3 = func('foo')
assert val3 != val
def test_class_key_cache():
cache = make_cache_obj()
class Foo(object):
@cache.cache('method')
def go(self, x, y):
return "hi foo"
@cache.cache('standalone')
def go(x, y):
return "hi standalone"
x = Foo().go(1, 2)
y = go(1, 2)
ns = go._arg_namespace
assert cache.get_cache(ns).get('method 1 2') == x
assert cache.get_cache(ns).get('standalone 1 2') == y
def test_func_namespace():
def go(x, y):
return "hi standalone"
assert 'test_cache_decorator' in util.func_namespace(go)
assert util.func_namespace(go).endswith('go')
def test_class_key_region():
opts = {}
opts['cache.regions'] = 'short_term'
opts['cache.short_term.expire'] = '2'
cache = make_cache_obj(**opts)
class Foo(object):
@cache_region('short_term', 'method')
def go(self, x, y):
return "hi foo"
@cache_region('short_term', 'standalone')
def go(x, y):
return "hi standalone"
x = Foo().go(1, 2)
y = go(1, 2)
ns = go._arg_namespace
assert cache.get_cache_region(ns, 'short_term').get('method 1 2') == x
assert cache.get_cache_region(ns, 'short_term').get('standalone 1 2') == y
def test_classmethod_key_region():
opts = {}
opts['cache.regions'] = 'short_term'
opts['cache.short_term.expire'] = '2'
cache = make_cache_obj(**opts)
class Foo(object):
@classmethod
@cache_region('short_term', 'method')
def go(cls, x, y):
return "hi"
x = Foo.go(1, 2)
ns = Foo.go._arg_namespace
assert cache.get_cache_region(ns, 'short_term').get('method 1 2') == x
def test_class_key_region_invalidate():
opts = {}
opts['cache.regions'] = 'short_term'
opts['cache.short_term.expire'] = '2'
cache = make_cache_obj(**opts)
class Foo(object):
@cache_region('short_term', 'method')
def go(self, x, y):
now = datetime.now()
return "hi %s" % now
def invalidate(self, x, y):
region_invalidate(self.go, None, "method", x, y)
x = Foo().go(1, 2)
time.sleep(0.1)
y = Foo().go(1, 2)
Foo().invalidate(1, 2)
z = Foo().go(1, 2)
assert x == y
assert x != z
def test_check_region_decorator_keeps_docstring_and_name():
result = albert(1)
time.sleep(0.1)
result2 = albert(1)
assert result == result2
assert albert.__doc__ == "A doc string"
assert albert.__name__ == "albert"
def test_check_region_decorator_with_kwargs():
result = alfred(1, xx=5, y=3)
time.sleep(0.1)
result2 = alfred(1, y=3, xx=5)
assert result == result2
result3 = alfred(1, 5, y=5)
assert result != result3
result4 = alfred(1, 5, 3)
assert result == result4
result5 = alfred(1, 5, y=3)
assert result == result5
def test_check_region_decorator_with_kwargs_and_self():
a1 = AlfredCacher()
a2 = AlfredCacher()
result = a1.alfred_self(xx=5, y='blah')
time.sleep(0.1)
result2 = a2.alfred_self(y='blah', xx=5)
assert result == result2
result3 = a2.alfred_self(5, y=5)
assert result != result3
result4 = a2.alfred_self(5, 'blah')
assert result == result4
result5 = a2.alfred_self(5, y='blah')
assert result == result5
result6 = a2.alfred_self(6, 'blah')
assert result != result6
def test_check_region_decorator_with_kwargs_self_and_annotations():
if AnnotatedAlfredCacher is None:
raise SkipTest('Python version not supporting annotations')
a1 = AnnotatedAlfredCacher()
a2 = AnnotatedAlfredCacher()
result = a1.alfred_self(xx=5, y='blah')
time.sleep(0.1)
result2 = a2.alfred_self(y='blah', xx=5)
assert result == result2
result3 = a2.alfred_self(5, y=5)
assert result != result3
result4 = a2.alfred_self(5, 'blah')
assert result == result4
result5 = a2.alfred_self(5, y='blah')
assert result == result5
result6 = a2.alfred_self(6, 'blah')
assert result != result6
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