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oc-discovery/docs/diagrams/03_indexer_heartbeat.puml

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2026-02-24 14:31:37 +01:00
@startuml
title Indexer — Heartbeat double (Pair A + Pair B → Indexer partagé)
participant "Node A" as NodeA
participant "Node B" as NodeB
participant "IndexerService (partagé)" as Indexer
note over NodeA,NodeB: Chaque pair tick toutes les 20s
par Pair A heartbeat
NodeA -> Indexer: NewStream /opencloud/heartbeat/1.0
NodeA -> Indexer: json.Encode(Heartbeat A {Name, DID_A, PeerID_A, IndexersBinded})
Indexer -> Indexer: CheckHeartbeat(host, stream, streams, mu, maxNodes)
note over Indexer: len(peers) < maxNodes ?
Indexer -> Indexer: getBandwidthChallenge(512-2048 bytes, stream)
Indexer -> NodeA: Write(random payload)
NodeA -> Indexer: Echo(same payload)
Indexer -> Indexer: Mesure round-trip → Mbps A
Indexer -> Indexer: getDiversityRate(host, IndexersBinded_A)
note over Indexer: /24 subnet diversity des indexeurs liés
Indexer -> Indexer: ComputeIndexerScore(uptimeA%, MbpsA%, diversityA%)
note over Indexer: Score = 0.4×uptime + 0.4×bpms + 0.2×diversity
alt Score A < 75
Indexer -> NodeA: (close stream)
else Score A >= 75
Indexer -> Indexer: StreamRecord[PeerID_A] = {DID_A, Heartbeat, UptimeTracker}
end
else Pair B heartbeat
NodeB -> Indexer: NewStream /opencloud/heartbeat/1.0
NodeB -> Indexer: json.Encode(Heartbeat B {Name, DID_B, PeerID_B, IndexersBinded})
Indexer -> Indexer: CheckHeartbeat → getBandwidthChallenge
Indexer -> NodeB: Write(random payload)
NodeB -> Indexer: Echo(same payload)
Indexer -> Indexer: ComputeIndexerScore(uptimeB%, MbpsB%, diversityB%)
alt Score B >= 75
Indexer -> Indexer: StreamRecord[PeerID_B] = {DID_B, Heartbeat, UptimeTracker}
end
end par
note over Indexer: Les deux pairs sont désormais\nenregistrés avec leurs streams actifs
@enduml