Netdb code cleanup #1949
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Netdb code cleanup #1949
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added 3 commits
September 21, 2017 09:37
- Added remainingReapTime field in the table event. Wihtout it a node that did not have a state for the element was marking the element for deletion setting the max reapTime. This was creating the possibility to keep the entry being resync between nodes forever avoding the purpose of the reap time itself. - On broadcast of the table event the node owner was rewritten with the local node name, this was not correct because the owner should continue to remain the original one of the message Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
- Changed the loop per network. Previous implementation was taking a ReadLock to update the reapTime but now with the residualReapTime also the bulkSync is using the same ReadLock creating possible issues in concurrent read and update of the value. The new logic fetches the list of networks and proceed to the cleanup network by network locking the database and releasing it after each network. This should ensure a fair locking avoiding to keep the database blocked for too much time. Note: The ticker does not guarantee that the reap logic runs precisely every reapTimePeriod, actually documentation says that if the routine is too long will skip ticks. In case of slowdown of the process itself it is possible that the lifetime of the deleted entries increases, it still should not be a huge problem because now the residual reaptime is propagated among all the nodes a slower node will let the deleted entry being repropagate multiple times but the state will still remain consistent. Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
- Removed the reap network as is not super useful - Adjusted some indentation Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
Codecov Report
@@ Coverage Diff @@
## master #1949 +/- ##
==========================================
- Coverage 38% 37.95% -0.05%
==========================================
Files 137 137
Lines 27149 27295 +146
==========================================
+ Hits 10317 10360 +43
- Misses 15562 15661 +99
- Partials 1270 1274 +4
Continue to review full report at Codecov.
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This PR takes care of some code cleanup and is dependent from #1944