commit inicial do projeto

internal/consensus/quorum.go

@@ -0,0 +1,55 @@
+package consensus
+
+import "log"
+
+// CheckQuorum verifica se 2/3 dos validadores (por quantidade) assinaram.
+func CheckQuorum(votes map[string]string, totalValidators int) (bool, string) {
+	voteCounts := make(map[string]int)
+	for _, hash := range votes {
+		voteCounts[hash]++
+	}
+	quorum := (2 * totalValidators) / 3
+	for hash, count := range voteCounts {
+		if count > quorum {
+			return true, hash
+		}
+	}
+	return false, ""
+}
+
+// CheckQuorumWeighted verifica se votos representam 2/3 do stake total considerando peers online.
+func CheckQuorumWeighted(votes map[string]string, valSet *ValidatorSet, liveness *LivenessMonitor) (bool, string) {
+	totalStake := uint64(0)
+	for _, val := range valSet.Validators {
+		if liveness.IsAlive(val.Address) {
+			totalStake += val.Stake
+		}
+	}
+	required := (2 * totalStake) / 3
+	log.Printf("🔍 Total stake online: %d | Quórum necessário: %d\n", totalStake, required)
+
+	weighted := make(map[string]uint64)
+	for validator, hash := range votes {
+		val, ok := valSet.ValidatorByAddress(validator)
+		if !ok {
+			log.Printf("⚠️ Validador %s não encontrado no conjunto\n", validator)
+			continue
+		}
+		if !liveness.IsAlive(val.Address) {
+			log.Printf("⚠️ Validador %s está OFFLINE\n", val.Address)
+			continue
+		}
+		log.Printf("✅ Voto de %s para hash %s com %d tokens\n", val.Address, hash, val.Stake)
+		weighted[hash] += val.Stake
+	}
+
+	for hash, sum := range weighted {
+		log.Printf("📊 Hash %s recebeu %d tokens\n", hash, sum)
+		if sum > required {
+			log.Printf("🎯 Quórum atingido para hash %s\n", hash)
+			return true, hash
+		}
+	}
+	log.Println("❌ Quórum NÃO atingido")
+	return false, ""
+}