Pull latest service module from Oslo
Get latest service module from Oslo to prepare for multi-process API service implementation.
Below are the commits included in this pull.
Changes being pulled into in service module are:
* e7bc8c9 2013-11-20 | Merge "os._exit in _start_child may cause unexpected exception"
* 96a2d4e 2013-11-07 | os._exit in _start_child may cause unexpected exception
* 1771a77 2013-11-05 | Adjust import order according to PEP8 imports rule
* 3110c0f 2013-10-17 | Use multiprocessing.Event to ensure services have started
* b5fba9e 2013-09-18 | Move comment in service.py to correct location
* 11cc74f 2013-08-26 | Fixes issue with SUGHUP in services on Windows
* 825ace5 2013-06-17 | Add service restart function in oslo-incubator
* c935d1c 2013-07-16 | Merge "Allow launchers to be stopped multiple times"
* dc8aa79 2013-07-08 | Allow launchers to be stopped multiple times
* 1a2df89 2013-06-25 | Enable H302 hacking check
* 52e857a 2013-06-19 | Ignore any exceptions from rpc.cleanup().
* 5518ad3 2013-05-16 | Add graceful service shutdown support to Launcher
And these dependent modules
- cinder/openstack/common/eventlet_backdoor.py
* 1dcc747 2013-07-15 | Fix stylistic problems with help text
* 1a2df89 2013-06-25 | Enable H302 hacking check
* c7c55b2 2013-06-20 | Improve usability when backdoor_port is nonzero
- cinder/openstack/common/gettextutils.py
* 3970d46 2013-11-02 | Fix typos in oslo
* 88db9c8 2013-10-03 | When translating if no locale is given use default locale
- cinder/openstack/common/jsonutils.py
* 3d7504b 2013-09-23 | Ensure that Message objects will be sent via RPC in unicode format
* 1807d32 2013-08-22 | jsonutils: make types py3 compatible
* bdef862 2013-08-22 | jsonutils: do not require xmlrpclib
* ded9bd6 2013-08-04 | Make dependency on netaddr optional
* 7b7566b 2013-06-25 | Add netaddr.IPAddress support to to_primitive()
- cinder/openstack/common/local.py
* cb2a2b6 2013-06-28 | Modify local.py to not be dependent on Eventlet
* 547ab34 2013-03-11 | Fix Copyright Headers - Rename LLC to Foundation
- cinder/openstack/common/log.py
* a82e889 2013-11-14 | Merge "Do not name variables as builtins"
* 2251cb5 2013-11-13 | Do not name variables as builtins
* 25c5854 2013-11-13 | Adds admin_password as key to be sanitized when logging
* cbfded9 2013-11-11 | Default iso8601 logging to WARN
* 76b0cd1 2013-11-04 | Add mask password impl from other projects
- cinder/openstack/common/loopingcall.py
* 1a2df89 2013-06-25 | Enable H302 hacking check
- cinder/openstack/common/threadgroup.py
* 9d3c34b 2013-10-25 | Add a link method to Thread
* 1a2df89 2013-06-25 | Enable H302 hacking check
- cinder/openstack/common/timeutils.py
* f3b5f17 2013-11-12 | Add helper method total_seconds in timeutils.py
* 53ebd30 2013-10-18 | python3: use six.text_types for unicode()
* 3bc6f79 2013-09-19 | Fix timeutils.set_override_time not defaulting to current wall time
* af76064 2013-08-29 | Optimize timeutils.utcnow_ts()
* df3f2ba 2013-07-26 | BaseException.message is deprecated since Python 2.6
* d28fa69 2013-06-27 | python3: Add python3 compatibility.
Partial bp: multi-process-api-service
Change-Id: Ifd25eae9eb2d6ae53bcf1665c3d5b7db4144433c
This commit is contained in:
Zhiteng Huang
parent
b4a9c25699
commit
9c2029a801
@ -18,8 +18,11 @@
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from __future__ import print_function
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import errno
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import gc
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import os
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import pprint
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import socket
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import sys
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import traceback
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@ -28,14 +31,34 @@ import eventlet.backdoor
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import greenlet
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from oslo.config import cfg
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from cinder.openstack.common.gettextutils import _ # noqa
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from cinder.openstack.common import log as logging
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help_for_backdoor_port = (
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"Acceptable values are 0, <port>, and <start>:<end>, where 0 results "
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"in listening on a random tcp port number; <port> results in listening "
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"on the specified port number (and not enabling backdoor if that port "
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"is in use); and <start>:<end> results in listening on the smallest "
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"unused port number within the specified range of port numbers. The "
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"chosen port is displayed in the service's log file.")
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eventlet_backdoor_opts = [
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cfg.IntOpt('backdoor_port',
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cfg.StrOpt('backdoor_port',
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default=None,
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help='port for eventlet backdoor to listen')
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help="Enable eventlet backdoor. %s" % help_for_backdoor_port)
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]
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CONF = cfg.CONF
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CONF.register_opts(eventlet_backdoor_opts)
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LOG = logging.getLogger(__name__)
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class EventletBackdoorConfigValueError(Exception):
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def __init__(self, port_range, help_msg, ex):
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msg = ('Invalid backdoor_port configuration %(range)s: %(ex)s. '
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'%(help)s' %
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{'range': port_range, 'ex': ex, 'help': help_msg})
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super(EventletBackdoorConfigValueError, self).__init__(msg)
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self.port_range = port_range
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def _dont_use_this():
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@ -60,6 +83,33 @@ def _print_nativethreads():
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print()
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def _parse_port_range(port_range):
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if ':' not in port_range:
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start, end = port_range, port_range
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else:
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start, end = port_range.split(':', 1)
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try:
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start, end = int(start), int(end)
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if end < start:
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raise ValueError
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return start, end
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except ValueError as ex:
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raise EventletBackdoorConfigValueError(port_range, ex,
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help_for_backdoor_port)
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def _listen(host, start_port, end_port, listen_func):
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try_port = start_port
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while True:
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try:
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return listen_func((host, try_port))
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except socket.error as exc:
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if (exc.errno != errno.EADDRINUSE or
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try_port >= end_port):
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raise
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try_port += 1
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def initialize_if_enabled():
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backdoor_locals = {
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'exit': _dont_use_this, # So we don't exit the entire process
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@ -72,6 +122,8 @@ def initialize_if_enabled():
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if CONF.backdoor_port is None:
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return None
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start_port, end_port = _parse_port_range(str(CONF.backdoor_port))
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# NOTE(johannes): The standard sys.displayhook will print the value of
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# the last expression and set it to __builtin__._, which overwrites
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# the __builtin__._ that gettext sets. Let's switch to using pprint
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@ -82,8 +134,13 @@ def initialize_if_enabled():
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pprint.pprint(val)
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sys.displayhook = displayhook
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sock = eventlet.listen(('localhost', CONF.backdoor_port))
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sock = _listen('localhost', start_port, end_port, eventlet.listen)
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# In the case of backdoor port being zero, a port number is assigned by
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# listen(). In any case, pull the port number out here.
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port = sock.getsockname()[1]
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LOG.info(_('Eventlet backdoor listening on %(port)s for process %(pid)d') %
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{'port': port, 'pid': os.getpid()})
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eventlet.spawn_n(eventlet.backdoor.backdoor_server, sock,
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locals=backdoor_locals)
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return port
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@ -317,7 +317,7 @@ def get_available_languages(domain):
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# NOTE(luisg): Babel <1.0 used a function called list(), which was
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# renamed to locale_identifiers() in >=1.0, the requirements master list
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# requires >=0.9.6, uncapped, so defensively work with both. We can remove
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# this check when the master list updates to >=1.0, and all projects udpate
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# this check when the master list updates to >=1.0, and update all projects
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list_identifiers = (getattr(localedata, 'list', None) or
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getattr(localedata, 'locale_identifiers'))
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locale_identifiers = list_identifiers()
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@ -329,13 +329,21 @@ def get_available_languages(domain):
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def get_localized_message(message, user_locale):
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"""Gets a localized version of the given message in the given locale."""
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"""Gets a localized version of the given message in the given locale.
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If the message is not a Message object the message is returned as-is.
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If the locale is None the message is translated to the default locale.
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:returns: the translated message in unicode, or the original message if
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it could not be translated
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"""
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translated = message
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if isinstance(message, Message):
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if user_locale:
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message.locale = user_locale
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return six.text_type(message)
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else:
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return message
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original_locale = message.locale
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message.locale = user_locale
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translated = six.text_type(message)
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message.locale = original_locale
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return translated
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class LocaleHandler(logging.Handler):
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@ -38,13 +38,19 @@ import functools
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import inspect
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import itertools
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import json
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import types
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import xmlrpclib
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try:
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import xmlrpclib
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except ImportError:
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# NOTE(jd): xmlrpclib is not shipped with Python 3
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xmlrpclib = None
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import six
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from cinder.openstack.common import gettextutils
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from cinder.openstack.common import importutils
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from cinder.openstack.common import timeutils
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netaddr = importutils.try_import("netaddr")
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_nasty_type_tests = [inspect.ismodule, inspect.isclass, inspect.ismethod,
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inspect.isfunction, inspect.isgeneratorfunction,
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@ -52,7 +58,8 @@ _nasty_type_tests = [inspect.ismodule, inspect.isclass, inspect.ismethod,
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inspect.iscode, inspect.isbuiltin, inspect.isroutine,
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inspect.isabstract]
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_simple_types = (types.NoneType, int, basestring, bool, float, long)
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_simple_types = (six.string_types + six.integer_types
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+ (type(None), bool, float))
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def to_primitive(value, convert_instances=False, convert_datetime=True,
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@ -124,11 +131,13 @@ def to_primitive(value, convert_instances=False, convert_datetime=True,
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# It's not clear why xmlrpclib created their own DateTime type, but
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# for our purposes, make it a datetime type which is explicitly
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# handled
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if isinstance(value, xmlrpclib.DateTime):
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if xmlrpclib and isinstance(value, xmlrpclib.DateTime):
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value = datetime.datetime(*tuple(value.timetuple())[:6])
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if convert_datetime and isinstance(value, datetime.datetime):
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return timeutils.strtime(value)
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elif isinstance(value, gettextutils.Message):
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return value.data
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elif hasattr(value, 'iteritems'):
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return recursive(dict(value.iteritems()), level=level + 1)
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elif hasattr(value, '__iter__'):
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@ -137,6 +146,8 @@ def to_primitive(value, convert_instances=False, convert_datetime=True,
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# Likely an instance of something. Watch for cycles.
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# Ignore class member vars.
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return recursive(value.__dict__, level=level + 1)
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elif netaddr and isinstance(value, netaddr.IPAddress):
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return six.text_type(value)
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else:
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if any(test(value) for test in _nasty_type_tests):
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return six.text_type(value)
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@ -15,16 +15,15 @@
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Greenthread local storage of variables using weak references"""
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"""Local storage of variables using weak references"""
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import threading
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import weakref
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from eventlet import corolocal
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class WeakLocal(corolocal.local):
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class WeakLocal(threading.local):
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def __getattribute__(self, attr):
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rval = corolocal.local.__getattribute__(self, attr)
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rval = super(WeakLocal, self).__getattribute__(attr)
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if rval:
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# NOTE(mikal): this bit is confusing. What is stored is a weak
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# reference, not the value itself. We therefore need to lookup
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@ -34,7 +33,7 @@ class WeakLocal(corolocal.local):
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def __setattr__(self, attr, value):
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value = weakref.ref(value)
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return corolocal.local.__setattr__(self, attr, value)
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return super(WeakLocal, self).__setattr__(attr, value)
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# NOTE(mikal): the name "store" should be deprecated in the future
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@ -45,4 +44,4 @@ store = WeakLocal()
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# "strong" store will hold a reference to the object so that it never falls out
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# of scope.
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weak_store = WeakLocal()
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strong_store = corolocal.local
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strong_store = threading.local()
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@ -35,6 +35,7 @@ import logging
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import logging.config
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import logging.handlers
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import os
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import re
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import sys
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import traceback
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@ -50,6 +51,24 @@ from cinder.openstack.common import local
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_DEFAULT_LOG_DATE_FORMAT = "%Y-%m-%d %H:%M:%S"
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_SANITIZE_KEYS = ['adminPass', 'admin_pass', 'password', 'admin_password']
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# NOTE(ldbragst): Let's build a list of regex objects using the list of
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# _SANITIZE_KEYS we already have. This way, we only have to add the new key
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# to the list of _SANITIZE_KEYS and we can generate regular expressions
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# for XML and JSON automatically.
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_SANITIZE_PATTERNS = []
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_FORMAT_PATTERNS = [r'(%(key)s\s*[=]\s*[\"\']).*?([\"\'])',
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r'(<%(key)s>).*?(</%(key)s>)',
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r'([\"\']%(key)s[\"\']\s*:\s*[\"\']).*?([\"\'])',
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r'([\'"].*?%(key)s[\'"]\s*:\s*u?[\'"]).*?([\'"])']
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for key in _SANITIZE_KEYS:
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for pattern in _FORMAT_PATTERNS:
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reg_ex = re.compile(pattern % {'key': key}, re.DOTALL)
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_SANITIZE_PATTERNS.append(reg_ex)
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common_cli_opts = [
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cfg.BoolOpt('debug',
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short='d',
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@ -136,6 +155,7 @@ log_opts = [
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'qpid=WARN',
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'sqlalchemy=WARN',
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'suds=INFO',
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'iso8601=WARN',
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],
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help='list of logger=LEVEL pairs'),
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cfg.BoolOpt('publish_errors',
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@ -214,6 +234,39 @@ def _get_log_file_path(binary=None):
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return None
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def mask_password(message, secret="***"):
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"""Replace password with 'secret' in message.
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:param message: The string which includes security information.
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:param secret: value with which to replace passwords, defaults to "***".
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:returns: The unicode value of message with the password fields masked.
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For example:
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>>> mask_password("'adminPass' : 'aaaaa'")
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"'adminPass' : '***'"
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>>> mask_password("'admin_pass' : 'aaaaa'")
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"'admin_pass' : '***'"
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>>> mask_password('"password" : "aaaaa"')
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'"password" : "***"'
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>>> mask_password("'original_password' : 'aaaaa'")
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"'original_password' : '***'"
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>>> mask_password("u'original_password' : u'aaaaa'")
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"u'original_password' : u'***'"
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"""
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message = six.text_type(message)
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# NOTE(ldbragst): Check to see if anything in message contains any key
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# specified in _SANITIZE_KEYS, if not then just return the message since
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# we don't have to mask any passwords.
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if not any(key in message for key in _SANITIZE_KEYS):
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return message
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secret = r'\g<1>' + secret + r'\g<2>'
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for pattern in _SANITIZE_PATTERNS:
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message = re.sub(pattern, secret, message)
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return message
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class BaseLoggerAdapter(logging.LoggerAdapter):
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def audit(self, msg, *args, **kwargs):
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@ -336,10 +389,10 @@ class JSONFormatter(logging.Formatter):
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def _create_logging_excepthook(product_name):
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def logging_excepthook(type, value, tb):
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def logging_excepthook(exc_type, value, tb):
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extra = {}
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if CONF.verbose:
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extra['exc_info'] = (type, value, tb)
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extra['exc_info'] = (exc_type, value, tb)
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getLogger(product_name).critical(str(value), **extra)
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return logging_excepthook
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@ -22,7 +22,7 @@ import sys
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from eventlet import event
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from eventlet import greenthread
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from cinder.openstack.common.gettextutils import _
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from cinder.openstack.common.gettextutils import _ # noqa
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from cinder.openstack.common import log as logging
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from cinder.openstack.common import timeutils
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@ -20,6 +20,7 @@
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"""Generic Node base class for all workers that run on hosts."""
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import errno
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import logging as std_logging
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import os
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import random
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import signal
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@ -27,11 +28,11 @@ import sys
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import time
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import eventlet
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import logging as std_logging
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from eventlet import event
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from oslo.config import cfg
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from cinder.openstack.common import eventlet_backdoor
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from cinder.openstack.common.gettextutils import _
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from cinder.openstack.common.gettextutils import _ # noqa
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from cinder.openstack.common import importutils
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from cinder.openstack.common import log as logging
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from cinder.openstack.common import threadgroup
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@ -42,6 +43,29 @@ CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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def _sighup_supported():
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return hasattr(signal, 'SIGHUP')
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def _is_sighup(signo):
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return _sighup_supported() and signo == signal.SIGHUP
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def _signo_to_signame(signo):
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signals = {signal.SIGTERM: 'SIGTERM',
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signal.SIGINT: 'SIGINT'}
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if _sighup_supported():
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signals[signal.SIGHUP] = 'SIGHUP'
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return signals[signo]
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def _set_signals_handler(handler):
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signal.signal(signal.SIGTERM, handler)
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signal.signal(signal.SIGINT, handler)
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if _sighup_supported():
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signal.signal(signal.SIGHUP, handler)
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class Launcher(object):
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"""Launch one or more services and wait for them to complete."""
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|
||||
@ -51,20 +75,9 @@ class Launcher(object):
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:returns: None
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||||
|
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"""
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self._services = threadgroup.ThreadGroup()
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self.services = Services()
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self.backdoor_port = eventlet_backdoor.initialize_if_enabled()
|
||||
|
||||
@staticmethod
|
||||
def run_service(service):
|
||||
"""Start and wait for a service to finish.
|
||||
|
||||
:param service: service to run and wait for.
|
||||
:returns: None
|
||||
|
||||
"""
|
||||
service.start()
|
||||
service.wait()
|
||||
|
||||
def launch_service(self, service):
|
||||
"""Load and start the given service.
|
||||
|
||||
@ -73,7 +86,7 @@ class Launcher(object):
|
||||
|
||||
"""
|
||||
service.backdoor_port = self.backdoor_port
|
||||
self._services.add_thread(self.run_service, service)
|
||||
self.services.add(service)
|
||||
|
||||
def stop(self):
|
||||
"""Stop all services which are currently running.
|
||||
@ -81,7 +94,7 @@ class Launcher(object):
|
||||
:returns: None
|
||||
|
||||
"""
|
||||
self._services.stop()
|
||||
self.services.stop()
|
||||
|
||||
def wait(self):
|
||||
"""Waits until all services have been stopped, and then returns.
|
||||
@ -89,7 +102,16 @@ class Launcher(object):
|
||||
:returns: None
|
||||
|
||||
"""
|
||||
self._services.wait()
|
||||
self.services.wait()
|
||||
|
||||
def restart(self):
|
||||
"""Reload config files and restart service.
|
||||
|
||||
:returns: None
|
||||
|
||||
"""
|
||||
cfg.CONF.reload_config_files()
|
||||
self.services.restart()
|
||||
|
||||
|
||||
class SignalExit(SystemExit):
|
||||
@ -101,33 +123,48 @@ class SignalExit(SystemExit):
|
||||
class ServiceLauncher(Launcher):
|
||||
def _handle_signal(self, signo, frame):
|
||||
# Allow the process to be killed again and die from natural causes
|
||||
signal.signal(signal.SIGTERM, signal.SIG_DFL)
|
||||
signal.signal(signal.SIGINT, signal.SIG_DFL)
|
||||
|
||||
_set_signals_handler(signal.SIG_DFL)
|
||||
raise SignalExit(signo)
|
||||
|
||||
def wait(self):
|
||||
signal.signal(signal.SIGTERM, self._handle_signal)
|
||||
signal.signal(signal.SIGINT, self._handle_signal)
|
||||
def handle_signal(self):
|
||||
_set_signals_handler(self._handle_signal)
|
||||
|
||||
def _wait_for_exit_or_signal(self, ready_callback=None):
|
||||
status = None
|
||||
signo = 0
|
||||
|
||||
LOG.debug(_('Full set of CONF:'))
|
||||
CONF.log_opt_values(LOG, std_logging.DEBUG)
|
||||
|
||||
status = None
|
||||
try:
|
||||
if ready_callback:
|
||||
ready_callback()
|
||||
super(ServiceLauncher, self).wait()
|
||||
except SignalExit as exc:
|
||||
signame = {signal.SIGTERM: 'SIGTERM',
|
||||
signal.SIGINT: 'SIGINT'}[exc.signo]
|
||||
signame = _signo_to_signame(exc.signo)
|
||||
LOG.info(_('Caught %s, exiting'), signame)
|
||||
status = exc.code
|
||||
signo = exc.signo
|
||||
except SystemExit as exc:
|
||||
status = exc.code
|
||||
finally:
|
||||
if rpc:
|
||||
rpc.cleanup()
|
||||
self.stop()
|
||||
return status
|
||||
if rpc:
|
||||
try:
|
||||
rpc.cleanup()
|
||||
except Exception:
|
||||
# We're shutting down, so it doesn't matter at this point.
|
||||
LOG.exception(_('Exception during rpc cleanup.'))
|
||||
|
||||
return status, signo
|
||||
|
||||
def wait(self, ready_callback=None):
|
||||
while True:
|
||||
self.handle_signal()
|
||||
status, signo = self._wait_for_exit_or_signal(ready_callback)
|
||||
if not _is_sighup(signo):
|
||||
return status
|
||||
self.restart()
|
||||
|
||||
|
||||
class ServiceWrapper(object):
|
||||
@ -145,17 +182,17 @@ class ProcessLauncher(object):
|
||||
self.running = True
|
||||
rfd, self.writepipe = os.pipe()
|
||||
self.readpipe = eventlet.greenio.GreenPipe(rfd, 'r')
|
||||
self.handle_signal()
|
||||
|
||||
signal.signal(signal.SIGTERM, self._handle_signal)
|
||||
signal.signal(signal.SIGINT, self._handle_signal)
|
||||
def handle_signal(self):
|
||||
_set_signals_handler(self._handle_signal)
|
||||
|
||||
def _handle_signal(self, signo, frame):
|
||||
self.sigcaught = signo
|
||||
self.running = False
|
||||
|
||||
# Allow the process to be killed again and die from natural causes
|
||||
signal.signal(signal.SIGTERM, signal.SIG_DFL)
|
||||
signal.signal(signal.SIGINT, signal.SIG_DFL)
|
||||
_set_signals_handler(signal.SIG_DFL)
|
||||
|
||||
def _pipe_watcher(self):
|
||||
# This will block until the write end is closed when the parent
|
||||
@ -166,16 +203,49 @@ class ProcessLauncher(object):
|
||||
|
||||
sys.exit(1)
|
||||
|
||||
def _child_process(self, service):
|
||||
def _child_process_handle_signal(self):
|
||||
# Setup child signal handlers differently
|
||||
def _sigterm(*args):
|
||||
signal.signal(signal.SIGTERM, signal.SIG_DFL)
|
||||
raise SignalExit(signal.SIGTERM)
|
||||
|
||||
def _sighup(*args):
|
||||
signal.signal(signal.SIGHUP, signal.SIG_DFL)
|
||||
raise SignalExit(signal.SIGHUP)
|
||||
|
||||
signal.signal(signal.SIGTERM, _sigterm)
|
||||
if _sighup_supported():
|
||||
signal.signal(signal.SIGHUP, _sighup)
|
||||
# Block SIGINT and let the parent send us a SIGTERM
|
||||
signal.signal(signal.SIGINT, signal.SIG_IGN)
|
||||
|
||||
def _child_wait_for_exit_or_signal(self, launcher):
|
||||
status = 0
|
||||
signo = 0
|
||||
|
||||
# NOTE(johannes): All exceptions are caught to ensure this
|
||||
# doesn't fallback into the loop spawning children. It would
|
||||
# be bad for a child to spawn more children.
|
||||
try:
|
||||
launcher.wait()
|
||||
except SignalExit as exc:
|
||||
signame = _signo_to_signame(exc.signo)
|
||||
LOG.info(_('Caught %s, exiting'), signame)
|
||||
status = exc.code
|
||||
signo = exc.signo
|
||||
except SystemExit as exc:
|
||||
status = exc.code
|
||||
except BaseException:
|
||||
LOG.exception(_('Unhandled exception'))
|
||||
status = 2
|
||||
finally:
|
||||
launcher.stop()
|
||||
|
||||
return status, signo
|
||||
|
||||
def _child_process(self, service):
|
||||
self._child_process_handle_signal()
|
||||
|
||||
# Reopen the eventlet hub to make sure we don't share an epoll
|
||||
# fd with parent and/or siblings, which would be bad
|
||||
eventlet.hubs.use_hub()
|
||||
@ -189,7 +259,8 @@ class ProcessLauncher(object):
|
||||
random.seed()
|
||||
|
||||
launcher = Launcher()
|
||||
launcher.run_service(service)
|
||||
launcher.launch_service(service)
|
||||
return launcher
|
||||
|
||||
def _start_child(self, wrap):
|
||||
if len(wrap.forktimes) > wrap.workers:
|
||||
@ -207,24 +278,13 @@ class ProcessLauncher(object):
|
||||
|
||||
pid = os.fork()
|
||||
if pid == 0:
|
||||
# NOTE(johannes): All exceptions are caught to ensure this
|
||||
# doesn't fallback into the loop spawning children. It would
|
||||
# be bad for a child to spawn more children.
|
||||
status = 0
|
||||
try:
|
||||
self._child_process(wrap.service)
|
||||
except SignalExit as exc:
|
||||
signame = {signal.SIGTERM: 'SIGTERM',
|
||||
signal.SIGINT: 'SIGINT'}[exc.signo]
|
||||
LOG.info(_('Caught %s, exiting'), signame)
|
||||
status = exc.code
|
||||
except SystemExit as exc:
|
||||
status = exc.code
|
||||
except BaseException:
|
||||
LOG.exception(_('Unhandled exception'))
|
||||
status = 2
|
||||
finally:
|
||||
wrap.service.stop()
|
||||
launcher = self._child_process(wrap.service)
|
||||
while True:
|
||||
self._child_process_handle_signal()
|
||||
status, signo = self._child_wait_for_exit_or_signal(launcher)
|
||||
if not _is_sighup(signo):
|
||||
break
|
||||
launcher.restart()
|
||||
|
||||
os._exit(status)
|
||||
|
||||
@ -270,12 +330,7 @@ class ProcessLauncher(object):
|
||||
wrap.children.remove(pid)
|
||||
return wrap
|
||||
|
||||
def wait(self):
|
||||
"""Loop waiting on children to die and respawning as necessary."""
|
||||
|
||||
LOG.debug(_('Full set of CONF:'))
|
||||
CONF.log_opt_values(LOG, std_logging.DEBUG)
|
||||
|
||||
def _respawn_children(self):
|
||||
while self.running:
|
||||
wrap = self._wait_child()
|
||||
if not wrap:
|
||||
@ -284,14 +339,28 @@ class ProcessLauncher(object):
|
||||
# (see bug #1095346)
|
||||
eventlet.greenthread.sleep(.01)
|
||||
continue
|
||||
|
||||
while self.running and len(wrap.children) < wrap.workers:
|
||||
self._start_child(wrap)
|
||||
|
||||
if self.sigcaught:
|
||||
signame = {signal.SIGTERM: 'SIGTERM',
|
||||
signal.SIGINT: 'SIGINT'}[self.sigcaught]
|
||||
LOG.info(_('Caught %s, stopping children'), signame)
|
||||
def wait(self):
|
||||
"""Loop waiting on children to die and respawning as necessary."""
|
||||
|
||||
LOG.debug(_('Full set of CONF:'))
|
||||
CONF.log_opt_values(LOG, std_logging.DEBUG)
|
||||
|
||||
while True:
|
||||
self.handle_signal()
|
||||
self._respawn_children()
|
||||
if self.sigcaught:
|
||||
signame = _signo_to_signame(self.sigcaught)
|
||||
LOG.info(_('Caught %s, stopping children'), signame)
|
||||
if not _is_sighup(self.sigcaught):
|
||||
break
|
||||
|
||||
for pid in self.children:
|
||||
os.kill(pid, signal.SIGHUP)
|
||||
self.running = True
|
||||
self.sigcaught = None
|
||||
|
||||
for pid in self.children:
|
||||
try:
|
||||
@ -313,15 +382,74 @@ class Service(object):
|
||||
def __init__(self, threads=1000):
|
||||
self.tg = threadgroup.ThreadGroup(threads)
|
||||
|
||||
# signal that the service is done shutting itself down:
|
||||
self._done = event.Event()
|
||||
|
||||
def reset(self):
|
||||
# NOTE(Fengqian): docs for Event.reset() recommend against using it
|
||||
self._done = event.Event()
|
||||
|
||||
def start(self):
|
||||
pass
|
||||
|
||||
def stop(self):
|
||||
self.tg.stop()
|
||||
self.tg.wait()
|
||||
# Signal that service cleanup is done:
|
||||
if not self._done.ready():
|
||||
self._done.send()
|
||||
|
||||
def wait(self):
|
||||
self._done.wait()
|
||||
|
||||
|
||||
class Services(object):
|
||||
|
||||
def __init__(self):
|
||||
self.services = []
|
||||
self.tg = threadgroup.ThreadGroup()
|
||||
self.done = event.Event()
|
||||
|
||||
def add(self, service):
|
||||
self.services.append(service)
|
||||
self.tg.add_thread(self.run_service, service, self.done)
|
||||
|
||||
def stop(self):
|
||||
# wait for graceful shutdown of services:
|
||||
for service in self.services:
|
||||
service.stop()
|
||||
service.wait()
|
||||
|
||||
# Each service has performed cleanup, now signal that the run_service
|
||||
# wrapper threads can now die:
|
||||
if not self.done.ready():
|
||||
self.done.send()
|
||||
|
||||
# reap threads:
|
||||
self.tg.stop()
|
||||
|
||||
def wait(self):
|
||||
self.tg.wait()
|
||||
|
||||
def restart(self):
|
||||
self.stop()
|
||||
self.done = event.Event()
|
||||
for restart_service in self.services:
|
||||
restart_service.reset()
|
||||
self.tg.add_thread(self.run_service, restart_service, self.done)
|
||||
|
||||
@staticmethod
|
||||
def run_service(service, done):
|
||||
"""Service start wrapper.
|
||||
|
||||
:param service: service to run
|
||||
:param done: event to wait on until a shutdown is triggered
|
||||
:returns: None
|
||||
|
||||
"""
|
||||
service.start()
|
||||
done.wait()
|
||||
|
||||
|
||||
def launch(service, workers=None):
|
||||
if workers:
|
||||
|
||||
@ -14,7 +14,7 @@
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
from eventlet import greenlet
|
||||
import eventlet
|
||||
from eventlet import greenpool
|
||||
from eventlet import greenthread
|
||||
|
||||
@ -48,6 +48,9 @@ class Thread(object):
|
||||
def wait(self):
|
||||
return self.thread.wait()
|
||||
|
||||
def link(self, func, *args, **kwargs):
|
||||
self.thread.link(func, *args, **kwargs)
|
||||
|
||||
|
||||
class ThreadGroup(object):
|
||||
"""The point of the ThreadGroup classis to:
|
||||
@ -79,6 +82,7 @@ class ThreadGroup(object):
|
||||
gt = self.pool.spawn(callback, *args, **kwargs)
|
||||
th = Thread(gt, self)
|
||||
self.threads.append(th)
|
||||
return th
|
||||
|
||||
def thread_done(self, thread):
|
||||
self.threads.remove(thread)
|
||||
@ -105,7 +109,7 @@ class ThreadGroup(object):
|
||||
for x in self.timers:
|
||||
try:
|
||||
x.wait()
|
||||
except greenlet.GreenletExit:
|
||||
except eventlet.greenlet.GreenletExit:
|
||||
pass
|
||||
except Exception as ex:
|
||||
LOG.exception(ex)
|
||||
@ -115,7 +119,7 @@ class ThreadGroup(object):
|
||||
continue
|
||||
try:
|
||||
x.wait()
|
||||
except greenlet.GreenletExit:
|
||||
except eventlet.greenlet.GreenletExit:
|
||||
pass
|
||||
except Exception as ex:
|
||||
LOG.exception(ex)
|
||||
|
||||
@ -21,8 +21,10 @@ Time related utilities and helper functions.
|
||||
|
||||
import calendar
|
||||
import datetime
|
||||
import time
|
||||
|
||||
import iso8601
|
||||
import six
|
||||
|
||||
|
||||
# ISO 8601 extended time format with microseconds
|
||||
@ -48,9 +50,9 @@ def parse_isotime(timestr):
|
||||
try:
|
||||
return iso8601.parse_date(timestr)
|
||||
except iso8601.ParseError as e:
|
||||
raise ValueError(e.message)
|
||||
raise ValueError(six.text_type(e))
|
||||
except TypeError as e:
|
||||
raise ValueError(e.message)
|
||||
raise ValueError(six.text_type(e))
|
||||
|
||||
|
||||
def strtime(at=None, fmt=PERFECT_TIME_FORMAT):
|
||||
@ -75,20 +77,25 @@ def normalize_time(timestamp):
|
||||
|
||||
def is_older_than(before, seconds):
|
||||
"""Return True if before is older than seconds."""
|
||||
if isinstance(before, basestring):
|
||||
if isinstance(before, six.string_types):
|
||||
before = parse_strtime(before).replace(tzinfo=None)
|
||||
return utcnow() - before > datetime.timedelta(seconds=seconds)
|
||||
|
||||
|
||||
def is_newer_than(after, seconds):
|
||||
"""Return True if after is newer than seconds."""
|
||||
if isinstance(after, basestring):
|
||||
if isinstance(after, six.string_types):
|
||||
after = parse_strtime(after).replace(tzinfo=None)
|
||||
return after - utcnow() > datetime.timedelta(seconds=seconds)
|
||||
|
||||
|
||||
def utcnow_ts():
|
||||
"""Timestamp version of our utcnow function."""
|
||||
if utcnow.override_time is None:
|
||||
# NOTE(kgriffs): This is several times faster
|
||||
# than going through calendar.timegm(...)
|
||||
return int(time.time())
|
||||
|
||||
return calendar.timegm(utcnow().timetuple())
|
||||
|
||||
|
||||
@ -110,12 +117,15 @@ def iso8601_from_timestamp(timestamp):
|
||||
utcnow.override_time = None
|
||||
|
||||
|
||||
def set_time_override(override_time=datetime.datetime.utcnow()):
|
||||
def set_time_override(override_time=None):
|
||||
"""Overrides utils.utcnow.
|
||||
|
||||
Make it return a constant time or a list thereof, one at a time.
|
||||
|
||||
:param override_time: datetime instance or list thereof. If not
|
||||
given, defaults to the current UTC time.
|
||||
"""
|
||||
utcnow.override_time = override_time
|
||||
utcnow.override_time = override_time or datetime.datetime.utcnow()
|
||||
|
||||
|
||||
def advance_time_delta(timedelta):
|
||||
@ -168,6 +178,15 @@ def delta_seconds(before, after):
|
||||
datetime objects (as a float, to microsecond resolution).
|
||||
"""
|
||||
delta = after - before
|
||||
return total_seconds(delta)
|
||||
|
||||
|
||||
def total_seconds(delta):
|
||||
"""Return the total seconds of datetime.timedelta object.
|
||||
|
||||
Compute total seconds of datetime.timedelta, datetime.timedelta
|
||||
doesn't have method total_seconds in Python2.6, calculate it manually.
|
||||
"""
|
||||
try:
|
||||
return delta.total_seconds()
|
||||
except AttributeError:
|
||||
|
||||
@ -573,7 +573,14 @@
|
||||
# Options defined in cinder.openstack.common.eventlet_backdoor
|
||||
#
|
||||
|
||||
# port for eventlet backdoor to listen (integer value)
|
||||
# Enable eventlet backdoor. Acceptable values are 0, <port>,
|
||||
# and <start>:<end>, where 0 results in listening on a random
|
||||
# tcp port number; <port> results in listening on the
|
||||
# specified port number (and not enabling backdoor if that
|
||||
# port is in use); and <start>:<end> results in listening on
|
||||
# the smallest unused port number within the specified range
|
||||
# of port numbers. The chosen port is displayed in the
|
||||
# service's log file. (string value)
|
||||
#backdoor_port=<None>
|
||||
|
||||
|
||||
@ -621,7 +628,7 @@
|
||||
#logging_exception_prefix=%(asctime)s.%(msecs)03d %(process)d TRACE %(name)s %(instance)s
|
||||
|
||||
# list of logger=LEVEL pairs (list value)
|
||||
#default_log_levels=amqp=WARN,amqplib=WARN,boto=WARN,keystone=INFO,qpid=WARN,sqlalchemy=WARN,suds=INFO
|
||||
#default_log_levels=amqp=WARN,amqplib=WARN,boto=WARN,keystone=INFO,qpid=WARN,sqlalchemy=WARN,suds=INFO,iso8601=WARN
|
||||
|
||||
# publish error events (boolean value)
|
||||
#publish_errors=false
|
||||
|
||||
@ -25,6 +25,7 @@ module=rpc
|
||||
module=scheduler
|
||||
module=scheduler.filters
|
||||
module=scheduler.weights
|
||||
module=service
|
||||
module=strutils
|
||||
module=timeutils
|
||||
module=uuidutils
|
||||
|
||||
Loading…
Reference in New Issue
Block a user