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feat(filter): enhancing protocol peer management with mutex locks #2137

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merged 35 commits into from
Oct 10, 2024

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danisharora099
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@danisharora099 danisharora099 commented Sep 17, 2024

Problem

The current implementation showcased a lot of inconsistencies around peer management for protocols.
Multiple weird behaviour were observed:

  • protocol not able to find new peers from available pool, while it truly existed
  • peer renewal for a protocol was unsuccessful about the Peer Manager count didn't reflect that
  • protocol sometimes showed a count of available peers much greater than the total actually connected peers

Solution

  • Implemented mutex locks to ensure thread-safe protocol management
  • Refactored peer management methods in the BaseProtocol class to enhance performance and reliability
  • Improved error handling and logging in the FilterCore class
  • Use async-mutex for all locks-related chores

Notes

Contribution checklist:

  • covered by unit tests;
  • covered by e2e test;
  • add ! in title if breaks public API;

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github-actions bot commented Sep 17, 2024

size-limit report 📦

Path Size Loading time (3g) Running time (snapdragon) Total time
Waku node 85.46 KB (+1.47% 🔺) 1.8 s (+1.47% 🔺) 1.4 s (+37.22% 🔺) 3.1 s
Waku Simple Light Node 137.5 KB (+1.86% 🔺) 2.8 s (+1.86% 🔺) 1.6 s (+9.38% 🔺) 4.4 s
ECIES encryption 22.88 KB (-0.3% 🔽) 458 ms (-0.3% 🔽) 595 ms (-15.42% 🔽) 1.1 s
Symmetric encryption 22.37 KB (-0.12% 🔽) 448 ms (-0.12% 🔽) 391 ms (+32.42% 🔺) 838 ms
DNS discovery 72.9 KB (+0.87% 🔺) 1.5 s (+0.87% 🔺) 1.4 s (+52.9% 🔺) 2.8 s
Peer Exchange discovery 74.1 KB (+0.3% 🔺) 1.5 s (+0.3% 🔺) 1.2 s (+40.31% 🔺) 2.7 s
Local Peer Cache Discovery 68.03 KB (+0.6% 🔺) 1.4 s (+0.6% 🔺) 2.3 s (+182.33% 🔺) 3.7 s
Privacy preserving protocols 75.99 KB (+0.51% 🔺) 1.6 s (+0.51% 🔺) 1.7 s (-19.61% 🔽) 3.2 s
Waku Filter 79.75 KB (+1.5% 🔺) 1.6 s (+1.5% 🔺) 1.1 s (-38.92% 🔽) 2.7 s
Waku LightPush 77.77 KB (+1.23% 🔺) 1.6 s (+1.23% 🔺) 1.5 s (+0.72% 🔺) 3 s
History retrieval protocols 77.06 KB (+1.27% 🔺) 1.6 s (+1.27% 🔺) 967 ms (-15.28% 🔽) 2.6 s
Deterministic Message Hashing 7.39 KB (+0.15% 🔺) 148 ms (+0.15% 🔺) 171 ms (-14.07% 🔽) 319 ms

@danisharora099 danisharora099 force-pushed the fix/peer-management branch 2 times, most recently from 4de00a5 to aeb05cd Compare September 24, 2024 05:58
@danisharora099 danisharora099 changed the title chore: fix feat: enhancing protocol management with mutex locks Sep 30, 2024
@danisharora099 danisharora099 marked this pull request as ready for review October 1, 2024 13:18
@danisharora099 danisharora099 requested a review from a team as a code owner October 1, 2024 13:18
@@ -1,4 +1,4 @@
export const DEFAULT_KEEP_ALIVE = 30 * 1000;
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Ideally we should be fine with increasing this number, not decreasing.
How did you reach this number?

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No particular reasoning. We can change it. 30S was a guesstimate as well

{
payload: utf8ToBytes("Hello_World")
},
{ forceUseAllPeers: true }
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why is this added?

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so that PeerManager is forced to find all peers until numPeersToUse which awaits the process instead

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I see, then I think forceUseAllPeers is a bit misleading - I thought it will use all the peers

can be a follow up

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Not important for now considering PeerManager is removed from LightPush: #2137 (comment)

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added comments

@danisharora099 danisharora099 changed the title feat: enhancing protocol management with mutex locks feat(filter): enhancing protocol management with mutex locks Oct 9, 2024
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weboko commented Oct 10, 2024

please, address #2137 (comment) and #2137 (comment) before merging

from code perspective seems fine but after dogfooding it I see following critical issue - filter doesn't work at all as the peers are constantly getting renewed (I see it happens due to checkAndRenewPeers):
image

Let's disable reliabilityManager for Filter in this PR and I will follow up on it in #2158

Used version https://github.com/waku-org/js-waku/actions/runs/11249833553/job/31277485871

@danisharora099 danisharora099 changed the title feat(filter): enhancing protocol management with mutex locks feat(filter): enhancing protocol peer management with mutex locks Oct 10, 2024
@weboko weboko merged commit b2efce5 into master Oct 10, 2024
12 of 13 checks passed
@weboko weboko deleted the fix/peer-management branch October 10, 2024 21:47
@weboko weboko mentioned this pull request Oct 8, 2024
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bug: inconsistent protocol peer management bug: Filter subscriptions are not stable and missing messages
2 participants