stackforge/libra
Code Issues Proposed changes

Add statistics polling interval option.

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New --stats-poll option to specify statistics polling interval
in seconds. Update documentation for the new option.

Change-Id: I57deafec96bd2543217a45d3f52e8ffd46d208b0
This commit is contained in:
David Shrewsbury 2012-11-09 09:44:01 -05:00
parent dca86f2241
commit 1c2c932f53
4 changed files with 19 additions and 7 deletions
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6
doc/config.rst
View File

@ -144,6 +144,10 @@ Worker Command Line Options
Enable verbose output. Normally, only errors are logged. This enables
additional logging, but not as much as the :option:`-d` option.
.. option:: --stats-poll <SECONDS>
The number of seconds to sleep between statistics polling of the
load balancer driver. Default is 300 seconds.
Pool Manager Command Line Options
---------------------------------
@ -248,4 +252,4 @@ Pool Manager Command Line Options
Enable verbose output. Normally, only errors are logged. This enables
additional logging, but not as much as the :option:`-d` option.

1
etc/sample_libra.cfg
View File

@ -28,6 +28,7 @@ user = haproxy
group = haproxy
driver = haproxy
reconnect_sleep = 60
stats_poll = 300
server = 10.0.0.1:8080 10.0.0.2:8080
pid = /var/run/libra/libra_worker.pid
logfile = /var/log/libra/libra_worker.log

6
libra/worker/main.py
View File

@ -81,6 +81,10 @@ def main():
choices=haproxy_services.keys(), default='ubuntu',
help='os services to use with HAProxy driver (when used)'
)
options.parser.add_argument(
'--stats-poll', dest='stats_poll', type=int, metavar='TIME',
default=300, help='statistics polling interval in seconds'
)
args = options.run()
logger = setup_logging('libra_worker', args)
@ -115,7 +119,7 @@ def main():
# Tasks to execute in parallel
task_list = [
(config_manager, (logger, driver, args.server, args.reconnect_sleep)),
(stats_manager, (logger, driver))
(stats_manager, (logger, driver, args.stats_poll))
]
if args.nodaemon:

13
libra/worker/stats_client.py
View File

@ -15,16 +15,19 @@
import eventlet
def stats_manager(logger, driver):
logger.debug("Statistics gathering process started.")
def stats_manager(logger, driver, stats_poll):
logger.debug("[stats] Statistics gathering process started.")
logger.debug("[stats] Polling interval: %d" % stats_poll)
while True:
try:
driver.get_stats()
except NotImplementedError:
logger.warn("Driver does not implement statisics gathering.")
logger.warn(
"[stats] Driver does not implement statisics gathering."
)
break
eventlet.sleep(60)
eventlet.sleep(stats_poll)
logger.info("Statistics gathering process terminated.")
logger.info("[stats] Statistics gathering process terminated.")