summaryrefslogtreecommitdiffstats
path: root/module/lib/beaker/util.py
diff options
context:
space:
mode:
Diffstat (limited to 'module/lib/beaker/util.py')
-rw-r--r--module/lib/beaker/util.py302
1 files changed, 0 insertions, 302 deletions
diff --git a/module/lib/beaker/util.py b/module/lib/beaker/util.py
deleted file mode 100644
index 04c9617c5..000000000
--- a/module/lib/beaker/util.py
+++ /dev/null
@@ -1,302 +0,0 @@
-"""Beaker utilities"""
-
-try:
- import thread as _thread
- import threading as _threading
-except ImportError:
- import dummy_thread as _thread
- import dummy_threading as _threading
-
-from datetime import datetime, timedelta
-import os
-import string
-import types
-import weakref
-import warnings
-import sys
-
-py3k = getattr(sys, 'py3kwarning', False) or sys.version_info >= (3, 0)
-py24 = sys.version_info < (2,5)
-jython = sys.platform.startswith('java')
-
-if py3k or jython:
- import pickle
-else:
- import cPickle as pickle
-
-from beaker.converters import asbool
-from threading import local as _tlocal
-
-
-__all__ = ["ThreadLocal", "Registry", "WeakValuedRegistry", "SyncDict",
- "encoded_path", "verify_directory"]
-
-
-def verify_directory(dir):
- """verifies and creates a directory. tries to
- ignore collisions with other threads and processes."""
-
- tries = 0
- while not os.access(dir, os.F_OK):
- try:
- tries += 1
- os.makedirs(dir)
- except:
- if tries > 5:
- raise
-
-
-def deprecated(message):
- def wrapper(fn):
- def deprecated_method(*args, **kargs):
- warnings.warn(message, DeprecationWarning, 2)
- return fn(*args, **kargs)
- # TODO: use decorator ? functools.wrapper ?
- deprecated_method.__name__ = fn.__name__
- deprecated_method.__doc__ = "%s\n\n%s" % (message, fn.__doc__)
- return deprecated_method
- return wrapper
-
-class ThreadLocal(object):
- """stores a value on a per-thread basis"""
-
- __slots__ = '_tlocal'
-
- def __init__(self):
- self._tlocal = _tlocal()
-
- def put(self, value):
- self._tlocal.value = value
-
- def has(self):
- return hasattr(self._tlocal, 'value')
-
- def get(self, default=None):
- return getattr(self._tlocal, 'value', default)
-
- def remove(self):
- del self._tlocal.value
-
-class SyncDict(object):
- """
- An efficient/threadsafe singleton map algorithm, a.k.a.
- "get a value based on this key, and create if not found or not
- valid" paradigm:
-
- exists && isvalid ? get : create
-
- Designed to work with weakref dictionaries to expect items
- to asynchronously disappear from the dictionary.
-
- Use python 2.3.3 or greater ! a major bug was just fixed in Nov.
- 2003 that was driving me nuts with garbage collection/weakrefs in
- this section.
-
- """
- def __init__(self):
- self.mutex = _thread.allocate_lock()
- self.dict = {}
-
- def get(self, key, createfunc, *args, **kwargs):
- try:
- if self.has_key(key):
- return self.dict[key]
- else:
- return self.sync_get(key, createfunc, *args, **kwargs)
- except KeyError:
- return self.sync_get(key, createfunc, *args, **kwargs)
-
- def sync_get(self, key, createfunc, *args, **kwargs):
- self.mutex.acquire()
- try:
- try:
- if self.has_key(key):
- return self.dict[key]
- else:
- return self._create(key, createfunc, *args, **kwargs)
- except KeyError:
- return self._create(key, createfunc, *args, **kwargs)
- finally:
- self.mutex.release()
-
- def _create(self, key, createfunc, *args, **kwargs):
- self[key] = obj = createfunc(*args, **kwargs)
- return obj
-
- def has_key(self, key):
- return self.dict.has_key(key)
-
- def __contains__(self, key):
- return self.dict.__contains__(key)
- def __getitem__(self, key):
- return self.dict.__getitem__(key)
- def __setitem__(self, key, value):
- self.dict.__setitem__(key, value)
- def __delitem__(self, key):
- return self.dict.__delitem__(key)
- def clear(self):
- self.dict.clear()
-
-
-class WeakValuedRegistry(SyncDict):
- def __init__(self):
- self.mutex = _threading.RLock()
- self.dict = weakref.WeakValueDictionary()
-
-sha1 = None
-def encoded_path(root, identifiers, extension = ".enc", depth = 3,
- digest_filenames=True):
-
- """Generate a unique file-accessible path from the given list of
- identifiers starting at the given root directory."""
- ident = "_".join(identifiers)
-
- global sha1
- if sha1 is None:
- from beaker.crypto import sha1
-
- if digest_filenames:
- if py3k:
- ident = sha1(ident.encode('utf-8')).hexdigest()
- else:
- ident = sha1(ident).hexdigest()
-
- ident = os.path.basename(ident)
-
- tokens = []
- for d in range(1, depth):
- tokens.append(ident[0:d])
-
- dir = os.path.join(root, *tokens)
- verify_directory(dir)
-
- return os.path.join(dir, ident + extension)
-
-
-def verify_options(opt, types, error):
- if not isinstance(opt, types):
- if not isinstance(types, tuple):
- types = (types,)
- coerced = False
- for typ in types:
- try:
- if typ in (list, tuple):
- opt = [x.strip() for x in opt.split(',')]
- else:
- if typ == bool:
- typ = asbool
- opt = typ(opt)
- coerced = True
- except:
- pass
- if coerced:
- break
- if not coerced:
- raise Exception(error)
- elif isinstance(opt, str) and not opt.strip():
- raise Exception("Empty strings are invalid for: %s" % error)
- return opt
-
-
-def verify_rules(params, ruleset):
- for key, types, message in ruleset:
- if key in params:
- params[key] = verify_options(params[key], types, message)
- return params
-
-
-def coerce_session_params(params):
- rules = [
- ('data_dir', (str, types.NoneType), "data_dir must be a string "
- "referring to a directory."),
- ('lock_dir', (str, types.NoneType), "lock_dir must be a string referring to a "
- "directory."),
- ('type', (str, types.NoneType), "Session type must be a string."),
- ('cookie_expires', (bool, datetime, timedelta), "Cookie expires was "
- "not a boolean, datetime, or timedelta instance."),
- ('cookie_domain', (str, types.NoneType), "Cookie domain must be a "
- "string."),
- ('id', (str,), "Session id must be a string."),
- ('key', (str,), "Session key must be a string."),
- ('secret', (str, types.NoneType), "Session secret must be a string."),
- ('validate_key', (str, types.NoneType), "Session encrypt_key must be "
- "a string."),
- ('encrypt_key', (str, types.NoneType), "Session validate_key must be "
- "a string."),
- ('secure', (bool, types.NoneType), "Session secure must be a boolean."),
- ('timeout', (int, types.NoneType), "Session timeout must be an "
- "integer."),
- ('auto', (bool, types.NoneType), "Session is created if accessed."),
- ]
- return verify_rules(params, rules)
-
-
-def coerce_cache_params(params):
- rules = [
- ('data_dir', (str, types.NoneType), "data_dir must be a string "
- "referring to a directory."),
- ('lock_dir', (str, types.NoneType), "lock_dir must be a string referring to a "
- "directory."),
- ('type', (str,), "Cache type must be a string."),
- ('enabled', (bool, types.NoneType), "enabled must be true/false "
- "if present."),
- ('expire', (int, types.NoneType), "expire must be an integer representing "
- "how many seconds the cache is valid for"),
- ('regions', (list, tuple, types.NoneType), "Regions must be a "
- "comma seperated list of valid regions")
- ]
- return verify_rules(params, rules)
-
-
-def parse_cache_config_options(config, include_defaults=True):
- """Parse configuration options and validate for use with the
- CacheManager"""
-
- # Load default cache options
- if include_defaults:
- options= dict(type='memory', data_dir=None, expire=None,
- log_file=None)
- else:
- options = {}
- for key, val in config.iteritems():
- if key.startswith('beaker.cache.'):
- options[key[13:]] = val
- if key.startswith('cache.'):
- options[key[6:]] = val
- coerce_cache_params(options)
-
- # Set cache to enabled if not turned off
- if 'enabled' not in options:
- options['enabled'] = True
-
- # Configure region dict if regions are available
- regions = options.pop('regions', None)
- if regions:
- region_configs = {}
- for region in regions:
- # Setup the default cache options
- region_options = dict(data_dir=options.get('data_dir'),
- lock_dir=options.get('lock_dir'),
- type=options.get('type'),
- enabled=options['enabled'],
- expire=options.get('expire'))
- region_len = len(region) + 1
- for key in options.keys():
- if key.startswith('%s.' % region):
- region_options[key[region_len:]] = options.pop(key)
- coerce_cache_params(region_options)
- region_configs[region] = region_options
- options['cache_regions'] = region_configs
- return options
-
-def func_namespace(func):
- """Generates a unique namespace for a function"""
- kls = None
- if hasattr(func, 'im_func'):
- kls = func.im_class
- func = func.im_func
-
- if kls:
- return '%s.%s' % (kls.__module__, kls.__name__)
- else:
- return '%s.%s' % (func.__module__, func.__name__)
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-23 08:12:04 +0100