diff options
| author | Zhiteng Huang <zhiteng.huang@intel.com> | 2012-03-25 02:06:01 +0800 |
|---|---|---|
| committer | Zhiteng Huang <zhiteng.huang@intel.com> | 2012-06-02 00:34:55 +0800 |
| commit | e599636d09755f635604f64f17e9f56cac14575e (patch) | |
| tree | dc729c51267d8ab976422463a3a95b070ddd6135 /nova/utils.py | |
| parent | 31108020fc237624e244f08658646e2f119506db (diff) | |
| download | nova-e599636d09755f635604f64f17e9f56cac14575e.tar.gz nova-e599636d09755f635604f64f17e9f56cac14575e.tar.xz nova-e599636d09755f635604f64f17e9f56cac14575e.zip | |
blueprint <multi-process-api-service>
Add multiprocess support for API serivces (EC2/OSAPI_Compute/OSAPI_Volume/Metadata).
2012-06-1 v7:
* Add unittest to cover worker recovery, service termination functionality
in wsgi.py, fix python 2.6 compatibility issue.
* Modify generate_uid() to introduce per-process seeds in utils.py to avoid
collisions.
* Add worker session to nova.conf.sample.
2012-05-21 v6:
* Fix 'test_wsgi' unittest error.
2012-04-28 v5:
* Add SIGINT handler and fix child-parent race condition when Ctrl+C is
pressed.
2012-03-31 v4:
* Fixed typo, removed debug code.
2012-03-30 v3:
* Fixed localization/pep8 error in unittest, add metadata test.
* nova/wsgi.py:Server: use the greenthread pool created for each process.
* nova/service.py: remove debug code
2012-03-27 v2:
* Fixed unittest error.
* nova/wsgi.py:Server: Use self._logger to do logging in multiprocess mode.
* nova/wsgi.py:Server: Move self._pool creation into proper place.
* code style fix.
2012-03-25 v1:
* Modification to nova/service.py and nova/wsgi.py in order to support
multiprocess (a.k.a. workers) for various API services. If multiprocess
mode is enabled, (i.e. flags 'APINAME_workers' set to positive numbers),
corresponding API service will run in target number of process(es). There
is also a master_worker process spawned for managing all workers (handling
signal/termination).
* Add unittest for multiprocess API service, also alter testing/runner.py
to adopt new unittest.
Change-Id: Ia045e595543ddfd192894b2a05801cc4b7ca90cb
Diffstat (limited to 'nova/utils.py')
| -rw-r--r-- | nova/utils.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/nova/utils.py b/nova/utils.py index ae99212e9..403a6d960 100644 --- a/nova/utils.py +++ b/nova/utils.py @@ -63,6 +63,7 @@ LOG = logging.getLogger(__name__) ISO_TIME_FORMAT = "%Y-%m-%dT%H:%M:%S" PERFECT_TIME_FORMAT = "%Y-%m-%dT%H:%M:%S.%f" FLAGS = flags.FLAGS +RESEED = True FLAGS.register_opt( cfg.BoolOpt('disable_process_locking', default=False, @@ -290,6 +291,13 @@ def debug(arg): def generate_uid(topic, size=8): + global RESEED + if RESEED: + random.seed("%d%s%s" % (os.getpid(), + socket.gethostname(), + time.time())) + RESEED = False + characters = '01234567890abcdefghijklmnopqrstuvwxyz' choices = [random.choice(characters) for _x in xrange(size)] return '%s-%s' % (topic, ''.join(choices)) |