Validator Management

1pub struct ValidatorScore {
2    pub vote_account: Pubkey,
3    pub identity: Pubkey,
4    pub base_score: u32,
5    
6    // Performance metrics
7    pub uptime_percentage: f64,
8    pub skip_rate: f64,
9    pub commission: u8,
10    pub epoch_credits: u64,
11    
12    // Risk metrics
13    pub concentration_risk: f64,
14    pub delegation_capacity: u64,
15    pub self_stake_percentage: f64,
16}
17
18impl ValidatorScore {
19    pub fn calculate_score(&self) -> f64 {
20        // Base score weight: 20%
21        let base_weight = 0.20;
22        let normalized_base = (self.base_score as f64) / 100.0;
23        
24        // Performance weights
25        let uptime_weight = 0.25;
26        let skip_weight = 0.20;
27        let commission_weight = 0.10;
28        let credits_weight = 0.10;
29        
30        // Risk weights
31        let concentration_weight = 0.05;
32        let capacity_weight = 0.05;
33        let self_stake_weight = 0.05;
34        
35        // Calculate weighted scores
36        let performance_score = 
37            (self.uptime_percentage * uptime_weight) +
38            ((1.0 - self.skip_rate) * skip_weight) +
39            ((100.0 - self.commission as f64) / 100.0 * commission_weight) +
40            (self.epoch_credits as f64 / 1_000_000.0 * credits_weight);
41            
42        let risk_score =
43            ((1.0 - self.concentration_risk) * concentration_weight) +
44            (self.delegation_capacity as f64 / 1_000_000.0 * capacity_weight) +
45            (self.self_stake_percentage * self_stake_weight);
46            
47        // Combine scores
48        (normalized_base * base_weight) + performance_score + risk_score
49    }
50}

1pub struct StakeDistributor {
2    pub total_stake: u64,
3    pub min_stake_amount: u64,
4    pub max_stake_percentage: f64,
5    pub validators: Vec<ValidatorStake>,
6}
7
8impl StakeDistributor {
9    pub fn calculate_target_distribution(&self) -> Vec<(Pubkey, u64)> {
10        let total_score: f64 = self.validators
11            .iter()
12            .map(|v| v.score)
13            .sum();
14            
15        let mut distribution = Vec::new();
16        
17        for validator in &self.validators {
18            // Calculate target stake based on score
19            let score_ratio = validator.score / total_score;
20            let target_stake = ((self.total_stake as f64) * score_ratio) as u64;
21            
22            // Apply constraints
23            let target_stake = std::cmp::max(
24                self.min_stake_amount,
25                std::cmp::min(
26                    target_stake,
27                    ((self.total_stake as f64) * self.max_stake_percentage) as u64,
28                ),
29            );
30            
31            distribution.push((validator.vote_account, target_stake));
32        }
33        
34        self.balance_distribution(&mut distribution);
35        distribution
36    }
37}

1pub struct ValidatorMonitor {
2    pub connection: Arc<RpcClient>,
3    pub metrics_client: Arc<MetricsClient>,
4    pub alert_system: Arc<AlertSystem>,
5    pub validators: HashMap<Pubkey, ValidatorMetrics>,
6}
7
8impl ValidatorMonitor {
9    pub async fn monitor_epoch_performance(&mut self) -> ProgramResult {
10        for (vote_account, metrics) in &mut self.validators {
11            // Update current epoch performance
12            let vote_account_status = self.connection
13                .get_vote_account(vote_account)?;
14                
15            let epoch_credits = vote_account_status
16                .epoch_credits
17                .iter()
18                .last()
19                .ok_or(StakePoolError::NoEpochCredits)?;
20                
21            metrics.epoch_performance.update(
22                epoch_credits,
23                vote_account_status.commission,
24                vote_account_status.last_vote,
25            );
26            
27            // Check performance thresholds
28            self.check_performance_thresholds(metrics).await?;
29            
30            // Record metrics
31            self.record_metrics(metrics).await?;
32        }
33        
34        Ok(())
35    }
36}

1pub struct StakeRebalancer {
2    pub connection: Arc<RpcClient>,
3    pub stake_pool: Arc<StakePool>,
4    pub epoch_schedule: EpochSchedule,
5}
6
7impl StakeRebalancer {
8    pub async fn rebalance(&mut self) -> ProgramResult {
9        // Get current stake distribution
10        let current_distribution = self.stake_pool
11            .get_validator_stakes()
12            .await?;
13            
14        // Calculate target distribution
15        let target_distribution = self.stake_pool
16            .calculate_target_distribution()
17            .await?;
18            
19        // Calculate necessary stake movements
20        let movements = self.calculate_stake_movements(
21            &current_distribution,
22            &target_distribution,
23        )?;
24        
25        // Execute stake movements
26        for movement in movements {
27            match movement {
28                StakeMovement::Decrease { validator, amount } => {
29                    self.decrease_stake(&validator, amount).await?;
30                },
31                StakeMovement::Increase { validator, amount } => {
32                    self.increase_stake(&validator, amount).await?;
33                },
34            }
35        }
36        
37        Ok(())
38    }
39}