From 5f883e779d33c4db5292cd2e8ef7c3c66eabfb73 Mon Sep 17 00:00:00 2001
From: Dougal Matthews <dougal@redhat.com>
Date: Fri, 8 Aug 2014 15:28:01 +0100
Subject: [PATCH] Remove unused openstack.common.threadgroup

threadgroup was included in the original copy from Ironic and isn't
used anymore.

Change-Id: Ie2479e9ecfd9feeed2831e8b8c0a1e85b9def47f
---
 tuskar/openstack/common/threadgroup.py | 121 -------------------------
 1 file changed, 121 deletions(-)
 delete mode 100644 tuskar/openstack/common/threadgroup.py

diff --git a/tuskar/openstack/common/threadgroup.py b/tuskar/openstack/common/threadgroup.py
deleted file mode 100644
index 2fd07796..00000000
--- a/tuskar/openstack/common/threadgroup.py
+++ /dev/null
@@ -1,121 +0,0 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
-# Copyright 2012 Red Hat, Inc.
-#
-#    Licensed 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.
-
-from eventlet import greenlet
-from eventlet import greenpool
-from eventlet import greenthread
-
-from tuskar.openstack.common import log as logging
-from tuskar.openstack.common import loopingcall
-
-
-LOG = logging.getLogger(__name__)
-
-
-def _thread_done(gt, *args, **kwargs):
-    """ Callback function to be passed to GreenThread.link() when we spawn()
-    Calls the :class:`ThreadGroup` to notify if.
-
-    """
-    kwargs['group'].thread_done(kwargs['thread'])
-
-
-class Thread(object):
-    """ Wrapper around a greenthread, that holds a reference to the
-    :class:`ThreadGroup`. The Thread will notify the :class:`ThreadGroup` when
-    it has done so it can be removed from the threads list.
-    """
-    def __init__(self, thread, group):
-        self.thread = thread
-        self.thread.link(_thread_done, group=group, thread=self)
-
-    def stop(self):
-        self.thread.kill()
-
-    def wait(self):
-        return self.thread.wait()
-
-
-class ThreadGroup(object):
-    """ The point of the ThreadGroup classis to:
-
-    * keep track of timers and greenthreads (making it easier to stop them
-      when need be).
-    * provide an easy API to add timers.
-    """
-    def __init__(self, thread_pool_size=10):
-        self.pool = greenpool.GreenPool(thread_pool_size)
-        self.threads = []
-        self.timers = []
-
-    def add_dynamic_timer(self, callback, initial_delay=None,
-                          periodic_interval_max=None, *args, **kwargs):
-        timer = loopingcall.DynamicLoopingCall(callback, *args, **kwargs)
-        timer.start(initial_delay=initial_delay,
-                    periodic_interval_max=periodic_interval_max)
-        self.timers.append(timer)
-
-    def add_timer(self, interval, callback, initial_delay=None,
-                  *args, **kwargs):
-        pulse = loopingcall.FixedIntervalLoopingCall(callback, *args, **kwargs)
-        pulse.start(interval=interval,
-                    initial_delay=initial_delay)
-        self.timers.append(pulse)
-
-    def add_thread(self, callback, *args, **kwargs):
-        gt = self.pool.spawn(callback, *args, **kwargs)
-        th = Thread(gt, self)
-        self.threads.append(th)
-
-    def thread_done(self, thread):
-        self.threads.remove(thread)
-
-    def stop(self):
-        current = greenthread.getcurrent()
-        for x in self.threads:
-            if x is current:
-                # don't kill the current thread.
-                continue
-            try:
-                x.stop()
-            except Exception as ex:
-                LOG.exception(ex)
-
-        for x in self.timers:
-            try:
-                x.stop()
-            except Exception as ex:
-                LOG.exception(ex)
-        self.timers = []
-
-    def wait(self):
-        for x in self.timers:
-            try:
-                x.wait()
-            except greenlet.GreenletExit:
-                pass
-            except Exception as ex:
-                LOG.exception(ex)
-        current = greenthread.getcurrent()
-        for x in self.threads:
-            if x is current:
-                continue
-            try:
-                x.wait()
-            except greenlet.GreenletExit:
-                pass
-            except Exception as ex:
-                LOG.exception(ex)