stackforge/libra
Code Issues Proposed changes

[WORKER] Fix unreported stats carry over bug

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If HAProxy was restarted more than once before delivering a STATS
response, we were not carrying over the unreported total properly.
This fixes that.

Also add some more logging to assist in finding statistics bugs.

Change-Id: If2e1ef8d0d473e2fb9554a9dc89219086e80e55a
This commit is contained in:
David Shrewsbury
2013-12-03 15:21:23 -05:00
parent 94ec1a4bdb
commit 85b7d9c5ad
2 changed files with 20 additions and 6 deletions
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5
libra/worker/drivers/haproxy/stats.py
View File

@@ -16,6 +16,10 @@ import datetime
import os.path
import simplejson
from libra.openstack.common import log
LOG = log.getLogger(__name__)
class StatisticsManager(object):
"""
@@ -102,6 +106,7 @@ class StatisticsManager(object):
self.UNREPORTED_TCP_BYTES_FIELD: unreported_tcp_bytes,
self.UNREPORTED_HTTP_BYTES_FIELD: unreported_http_bytes
}
LOG.debug("Saving statistics: %s" % obj)
self._do_save(obj)
def read(self):

21
libra/worker/drivers/haproxy/ubuntu_services.py
View File

@@ -55,6 +55,8 @@ class UbuntuServices(services_base.ServicesBase):
tcp_bo = stats_mgr.get_last_tcp_bytes()
http_bo = stats_mgr.get_last_http_bytes()
unrpt_tcp_bo = stats_mgr.get_unreported_tcp_bytes()
unrpt_http_bo = stats_mgr.get_unreported_http_bytes()
curr_tcp_bo = 0
curr_http_bo = 0
@@ -63,6 +65,11 @@ class UbuntuServices(services_base.ServicesBase):
if 'http' in results:
curr_http_bo = results['http']
# If we have unreported totals, then we haven't received a STATS
# call since the last restart and we need to carry over those totals.
curr_tcp_bo += unrpt_tcp_bo
curr_http_bo += unrpt_http_bo
stats_mgr.save(start, end,
tcp_bytes=tcp_bo,
http_bytes=http_bo,
@@ -272,12 +279,14 @@ class UbuntuServices(services_base.ServicesBase):
incremental_results = []
if 'http' in results:
incremental_results.append(
('http', unrpt_http_bo + current_http_bo - prev_http_bo)
)
value = unrpt_http_bo + current_http_bo - prev_http_bo
if value < 0:
LOG.error("Negative statistics value: %d" % value)
incremental_results.append(('http', value))
if 'tcp' in results:
incremental_results.append(
('tcp', unrpt_tcp_bo + current_tcp_bo - prev_tcp_bo)
)
value = unrpt_tcp_bo + current_tcp_bo - prev_tcp_bo
if value < 0:
LOG.error("Negative statistics value: %d" % value)
incremental_results.append(('tcp', value))
return str(new_start), str(new_end), incremental_results