Limit to single inflight package syncing operation #289
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #289 +/- ##
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+ Coverage 76.32% 76.89% +0.56%
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Files 25 25
Lines 1681 1692 +11
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+ Hits 1283 1301 +18
+ Misses 291 285 -6
+ Partials 107 106 -1 ☔ View full report in Codecov by Sentry. |
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
tpaschalis
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I've rebased main and fixed the conflict from a recent PR, let me know what you think! 🙌 |
srikanthccv
reviewed
Jul 2, 2024
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
srikanthccv
reviewed
Jul 3, 2024
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
client/internal/httpsender_test.go
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| // Set the RequestInstanceUid flag on the tracked state to request the server for a new ID to use. |
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Thanks for the catch, removing it.
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
… concurrent Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
Signed-off-by: Paschalis Tsilias <paschalis.tsilias@grafana.com>
tigrannajaryan
approved these changes
Aug 29, 2024
Comment on lines
+287
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+298
| // Make sure that both Sync calls have gone through _before_ releasing the first one. | ||
| // This means that they're both called in parallel, and that the race | ||
| // detector would always report a race condition, but proper locking makes | ||
| // sure that's not the case. | ||
| assert.Eventually(t, func() bool { | ||
| return messages.Load() == 2 | ||
| }, 2*time.Second, 100*time.Millisecond, "both messages must have been processed successfully") | ||
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| // Release the second Sync call so it can continue and wait for both of them to complete. | ||
| blockSyncCh <- struct{}{} | ||
| <-doneCh[0] | ||
| <-doneCh[1] |
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I think this makes sense now. Thanks!
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Thanks for your patience @tpaschalis |
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This PR revives work done in previous PRs (#118, #120) to make sure that only a single package syncing operation is ever in flight and also adds a test.
The previous PRs did not account for needing to also protect
initStatusesandSetPackageStatuses, so that's why the Lock and Unlock statements are not just paired in doSync. If you think the intent would be clearer using a sync.WaitGroup, let me know.The new test makes sure that the mutex correctly protects the local storage; if we comment out the calls to Lock/Unlock and run the test with the
-raceflag we can see the race condition taking placeFixes #84