[RFC-191]: Add governance proposal-quorum flag

command/genesis/genesis.go

@@ -281,6 +281,13 @@ func setFlags(cmd *cobra.Command) {
 			"address of a governance admin (governance admin can add new or remove old proposers "+
 				"of governance proposals, and add new and remove old executors of accepted proposals)",
 		)
+
+		cmd.Flags().Uint64Var(
+			&params.proposalQuorum,
+			proposalQuorumFlag,
+			defaultProposalQuorumPercentage,
+			"percentage of total validator stake needed for a governance proposal to be accepted (from 0 to 100%)",
+		)
 	}
 
 	// Access Control Lists

command/genesis/params.go

@@ -45,6 +45,7 @@ const (
 	votePeriodFlag            = "vote-period"
 	voteProposalThresholdFlag = "vote-proposal-threshold"
 	governorAdminFlag         = "governor-admin"
+	proposalQuorumFlag        = "proposal-quorum"
 
 	defaultNativeTokenName     = "Polygon"
 	defaultNativeTokenSymbol   = "MATIC"
@@ -146,6 +147,7 @@ type genesisParams struct {
 	voteDelay         string
 	votingPeriod      string
 	proposalThreshold string
+	proposalQuorum    uint64
 	governorAdmin     string
 }
 

command/genesis/polybft_params.go

@@ -37,17 +37,18 @@ const (
 
 	blockTimeDriftFlag = "block-time-drift"
 
-	defaultEpochSize             = uint64(10)
-	defaultSprintSize            = uint64(5)
-	defaultValidatorSetSize      = 100
-	defaultBlockTime             = 2 * time.Second
-	defaultEpochReward           = 1
-	defaultBlockTimeDrift        = uint64(10)
-	defaultCheckpointInterval    = uint64(900)
-	defaultWithdrawalWaitPeriod  = uint64(1)
-	defaultVotingDelay           = "10"
-	defaultVotingPeriod          = "20"
-	defaultVoteProposalThreshold = "1000"
+	defaultEpochSize                = uint64(10)
+	defaultSprintSize               = uint64(5)
+	defaultValidatorSetSize         = 100
+	defaultBlockTime                = 2 * time.Second
+	defaultEpochReward              = 1
+	defaultBlockTimeDrift           = uint64(10)
+	defaultCheckpointInterval       = uint64(900)
+	defaultWithdrawalWaitPeriod     = uint64(1)
+	defaultVotingDelay              = "10"
+	defaultVotingPeriod             = "20"
+	defaultVoteProposalThreshold    = "1000"
+	defaultProposalQuorumPercentage = uint64(67)
 
 	contractDeployerAllowListAdminFlag   = "contract-deployer-allow-list-admin"
 	contractDeployerAllowListEnabledFlag = "contract-deployer-allow-list-enabled"
@@ -163,6 +164,12 @@ func (p *genesisParams) generatePolyBftChainConfig(o command.OutputFormatter) er
 		governorAdminAddr = types.StringToAddress(p.governorAdmin)
 	}
 
+	proposalQuorum := p.proposalQuorum
+	if proposalQuorum > 100 {
+		// proposal can be from 0 to 100, so we sanitize the value
+		proposalQuorum = 100
+	}
+
 	polyBftConfig := &polybft.PolyBFTConfig{
 		InitialValidatorSet: initialValidators,
 		BlockTime:           common.Duration{Duration: p.blockTime},
@@ -184,10 +191,11 @@ func (p *genesisParams) generatePolyBftChainConfig(o command.OutputFormatter) er
 		},
 		BlockTimeDrift: p.blockTimeDrift,
 		GovernanceConfig: &polybft.GovernanceConfig{
-			VotingDelay:       voteDelay,
-			VotingPeriod:      votingPeriod,
-			ProposalThreshold: proposalThreshold,
-			GovernorAdmin:     governorAdminAddr,
+			VotingDelay:              voteDelay,
+			VotingPeriod:             votingPeriod,
+			ProposalThreshold:        proposalThreshold,
+			ProposalQuorumPercentage: proposalQuorum,
+			GovernorAdmin:            governorAdminAddr,
 		},
 	}
 

consensus/polybft/polybft_config.go

@@ -248,14 +248,18 @@ type GovernanceConfig struct {
 	// GovernorAdmin is the address of governance contract admin
 	// (he is the only one able to add new and remove old executors and proposers)
 	GovernorAdmin types.Address
+	// ProposalQuorumPercentage is the percentage of total validator stake needed for a
+	// governance proposal to be accepted
+	ProposalQuorumPercentage uint64
 }
 
 func (g *GovernanceConfig) MarshalJSON() ([]byte, error) {
 	raw := &governanceConfigRaw{
-		VotingDelay:       types.EncodeBigInt(g.VotingDelay),
-		VotingPeriod:      types.EncodeBigInt(g.VotingPeriod),
-		ProposalThreshold: types.EncodeBigInt(g.ProposalThreshold),
-		GovernorAdmin:     g.GovernorAdmin,
+		VotingDelay:              types.EncodeBigInt(g.VotingDelay),
+		VotingPeriod:             types.EncodeBigInt(g.VotingPeriod),
+		ProposalThreshold:        types.EncodeBigInt(g.ProposalThreshold),
+		GovernorAdmin:            g.GovernorAdmin,
+		ProposalQuorumPercentage: g.ProposalQuorumPercentage,
 	}
 
 	return json.Marshal(raw)
@@ -287,13 +291,15 @@ func (g *GovernanceConfig) UnmarshalJSON(data []byte) error {
 	}
 
 	g.GovernorAdmin = raw.GovernorAdmin
+	g.ProposalQuorumPercentage = raw.ProposalQuorumPercentage
 
 	return nil
 }
 
 type governanceConfigRaw struct {
-	VotingDelay       *string       `json:"votingDelay"`
-	VotingPeriod      *string       `json:"votingPeriod"`
-	ProposalThreshold *string       `json:"proposalThreshold"`
-	GovernorAdmin     types.Address `json:"governorAdmin"`
+	VotingDelay              *string       `json:"votingDelay"`
+	VotingPeriod             *string       `json:"votingPeriod"`
+	ProposalThreshold        *string       `json:"proposalThreshold"`
+	GovernorAdmin            types.Address `json:"governorAdmin"`
+	ProposalQuorumPercentage uint64        `json:"proposalQuorumPercentage"`
 }