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author | Matthew Treinish <treinish@linux.vnet.ibm.com> | 2012-11-15 11:06:37 -0500 |
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committer | Matthew Treinish <treinish@linux.vnet.ibm.com> | 2012-11-16 09:45:07 -0500 |
commit | 0f578217beee6b7737e52ef1e4d221b0ecd695e1 (patch) | |
tree | 269caf940e9d3d0588dd765eb9109e1f7fa2c82d | |
parent | 48967d3822299b345589673be79cbcb58fa95d79 (diff) | |
download | nova-0f578217beee6b7737e52ef1e4d221b0ecd695e1.tar.gz nova-0f578217beee6b7737e52ef1e4d221b0ecd695e1.tar.xz nova-0f578217beee6b7737e52ef1e4d221b0ecd695e1.zip |
Sync eventlet_backdoor from oslo.
Change-Id: I2b0021e0612226e71700d74c865a84a5b6d8e735
Signed-off-by: Matthew Treinish <treinish@linux.vnet.ibm.com>
-rw-r--r-- | nova/openstack/common/eventlet_backdoor.py | 80 | ||||
-rw-r--r-- | openstack-common.conf | 2 |
2 files changed, 81 insertions, 1 deletions
diff --git a/nova/openstack/common/eventlet_backdoor.py b/nova/openstack/common/eventlet_backdoor.py new file mode 100644 index 000000000..f18e84f6d --- /dev/null +++ b/nova/openstack/common/eventlet_backdoor.py @@ -0,0 +1,80 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2012 Openstack, LLC. +# Administrator of the National Aeronautics and Space Administration. +# All Rights Reserved. +# +# 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. + +import gc +import pprint +import sys +import traceback + +import eventlet +import eventlet.backdoor +import greenlet + +from nova.openstack.common import cfg + +eventlet_backdoor_opts = [ + cfg.IntOpt('backdoor_port', + default=None, + help='port for eventlet backdoor to listen') +] + +CONF = cfg.CONF +CONF.register_opts(eventlet_backdoor_opts) + + +def _dont_use_this(): + print "Don't use this, just disconnect instead" + + +def _find_objects(t): + return filter(lambda o: isinstance(o, t), gc.get_objects()) + + +def _print_greenthreads(): + for i, gt in enumerate(find_objects(greenlet.greenlet)): + print i, gt + traceback.print_stack(gt.gr_frame) + print + + +def initialize_if_enabled(): + backdoor_locals = { + 'exit': _dont_use_this, # So we don't exit the entire process + 'quit': _dont_use_this, # So we don't exit the entire process + 'fo': _find_objects, + 'pgt': _print_greenthreads, + } + + if CONF.backdoor_port is None: + return None + + # NOTE(johannes): The standard sys.displayhook will print the value of + # the last expression and set it to __builtin__._, which overwrites + # the __builtin__._ that gettext sets. Let's switch to using pprint + # since it won't interact poorly with gettext, and it's easier to + # read the output too. + def displayhook(val): + if val is not None: + pprint.pprint(val) + sys.displayhook = displayhook + + sock = eventlet.listen(('localhost', CONF.backdoor_port)) + port = sock.getsockname()[1] + eventlet.spawn_n(eventlet.backdoor.backdoor_server, sock, + locals=backdoor_locals) + return port diff --git a/openstack-common.conf b/openstack-common.conf index 666fb059e..5f64e6ee2 100644 --- a/openstack-common.conf +++ b/openstack-common.conf @@ -1,7 +1,7 @@ [DEFAULT] # The list of modules to copy from openstack-common -modules=cfg,context,excutils,fileutils,gettextutils,importutils,iniparser,jsonutils,local,lockutils,log,network_utils,notifier,plugin,policy,setup,timeutils,rpc,uuidutils +modules=cfg,context,excutils,eventlet_backdoor,fileutils,gettextutils,importutils,iniparser,jsonutils,local,lockutils,log,network_utils,notifier,plugin,policy,setup,timeutils,rpc,uuidutils # The base module to hold the copy of openstack.common base=nova |