Differential D11035

[avalanche] Request for more avalanche nodes when needed
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Authored by Fabien on Feb 10 2022, 15:14.

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tyler-smith

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rABCd48106ab0e7c: [avalanche] Request for more avalanche nodes when needed

Summary

This diff spins a new network scheduler task that checks every 5 to 10 minutes whether it is required to request more avalanche nodes, and takes action accordingly.

Since it's running in the scheduler thread, the Peer::m_addr_token_bucket attribute needs to be guarded by a lock. Due to the way it is used, an atomic is not the best option here so a Mutex is used.

Ref T1696.

Depends on D11020, D11033 and D11034.

Test Plan

With Clang and Debug enabled:

ninja all check-all

Diff Detail

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rABC Bitcoin ABC

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Tests Not Applicable

Event Timeline

Fabien created this revision.Feb 10 2022, 15:14

Herald added a reviewer: Restricted Project. · View Herald TranscriptFeb 10 2022, 15:14

Fabien requested review of this revision.Feb 10 2022, 15:14

Harbormaster completed remote builds in B18242: Diff 32335.Feb 10 2022, 15:29

Looks good. There is one small nit that might be nice to address.

src/net_processing.cpp
1586 ↗	(On Diff #32335)	Should we increase this before sending the message? Seems like there's an extremely low chance of there being an issue, but it could be eliminated by increasing the bucket first.

This revision is now accepted and ready to land.Feb 15 2022, 20:41

Fabien planned changes to this revision.Feb 16 2022, 08:27

Fabien added inline comments.

src/net_processing.cpp
1586 ↗	(On Diff #32335)	Actually it's an issue, it's even a race. I will fix that.

Fix a potential race on Peer::m_addr_token_bucket, update summary and test plan accordingly.

This revision is now accepted and ready to land.Feb 16 2022, 10:27

Harbormaster completed remote builds in B18284: Diff 32403.Feb 16 2022, 10:43

These changes look good with the race fixed.

Fabien retitled this revision from [avalanche] Request for more avalance nodes when needed to [avalanche] Request for more avalanche nodes when needed.Feb 17 2022, 10:39

Closed by commit rABCd48106ab0e7c: [avalanche] Request for more avalanche nodes when needed (authored by Fabien). · Explain WhyFeb 17 2022, 10:44

This revision was automatically updated to reflect the committed changes.

Fabien added a commit: rABCd48106ab0e7c: [avalanche] Request for more avalanche nodes when needed.

PiRK mentioned this in D15286: net: add NetEventsInterface::g_msgproc_mutex.Jan 26 2024, 09:15

PiRK mentioned this in rABC591ec44ace7b: net: add NetEventsInterface::g_msgproc_mutex.Jan 26 2024, 16:30