Migrate as much as possible to pip and requirements.txt

lib/cherrypy/lib/locking.py

@@ -1,47 +0,0 @@
-import datetime
-
-
-class NeverExpires(object):
-    def expired(self):
-        return False
-
-
-class Timer(object):
-    """
-    A simple timer that will indicate when an expiration time has passed.
-    """
-    def __init__(self, expiration):
-        "Create a timer that expires at `expiration` (UTC datetime)"
-        self.expiration = expiration
-
-    @classmethod
-    def after(cls, elapsed):
-        """
-        Return a timer that will expire after `elapsed` passes.
-        """
-        return cls(datetime.datetime.utcnow() + elapsed)
-
-    def expired(self):
-        return datetime.datetime.utcnow() >= self.expiration
-
-
-class LockTimeout(Exception):
-    "An exception when a lock could not be acquired before a timeout period"
-
-
-class LockChecker(object):
-    """
-    Keep track of the time and detect if a timeout has expired
-    """
-    def __init__(self, session_id, timeout):
-        self.session_id = session_id
-        if timeout:
-            self.timer = Timer.after(timeout)
-        else:
-            self.timer = NeverExpires()
-
-    def expired(self):
-        if self.timer.expired():
-            raise LockTimeout(
-                "Timeout acquiring lock for %(session_id)s" % vars(self))
-        return False