optirs-tpu 0.3.1

// Deadlock Recovery Module

use crate::pod_coordination::types::*;
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Default)]
pub struct ActiveRecovery {
    pub in_progress: bool,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum CoordinatorSelection {
    Random,
    #[default]
    Priority,
    LoadBased,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum CoordinatorState {
    Active,
    #[default]
    Standby,
    Failed,
}

#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
pub struct DeadlockRecovery {
    pub strategy: RecoveryStrategy,
}

#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
pub struct DeadlockRecoverySystem {
    pub recovery: DeadlockRecovery,
}

impl DeadlockRecoverySystem {
    /// Create a new deadlock recovery system
    pub fn new() -> Self {
        Self::default()
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum DeadlockSeverity {
    Low,
    #[default]
    Medium,
    High,
    Critical,
}

#[derive(Debug, Clone, Default)]
pub struct DetectedDeadlock {
    pub severity: DeadlockSeverity,
}

#[derive(Debug, Clone, Default)]
pub struct DistributedRecovery {
    pub strategy: DistributedRecoveryStrategy,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum DistributedRecoveryStrategy {
    #[default]
    Centralized,
    Decentralized,
    Hybrid,
}

#[derive(Debug, Clone, Default)]
pub struct ExecutionContext {
    pub device_id: DeviceId,
}

#[derive(Debug, Clone, Default)]
pub struct ExecutionRecord {
    pub timestamp_ms: u64,
}

#[derive(Debug, Clone, Default)]
pub struct ExecutorCapabilities {
    pub can_rollback: bool,
}

#[derive(Debug, Clone, Default)]
pub struct ExecutorPerformance {
    pub success_rate: f64,
}

#[derive(Debug, Clone, Default)]
pub struct PhaseRecord {
    pub phase: RecoveryPhase,
    pub result: PhaseResult,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum PhaseResult {
    #[default]
    Success,
    Failure,
    Skipped,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RecoveryAction {
    Abort,
    #[default]
    Retry,
    Rollback,
    Kill,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryConstraint {
    pub type_: RecoveryConstraintType,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RecoveryConstraintType {
    #[default]
    Time,
    Resource,
    Priority,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryCoordination {
    pub coordinator: RecoveryCoordinator,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryCoordinator {
    pub state: CoordinatorState,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryExecutor {
    pub strategy: RecoveryExecutorStrategy,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RecoveryExecutorStrategy {
    #[default]
    Sequential,
    Parallel,
    Adaptive,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryObjective {
    pub max_time_ms: u64,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryOptimization {
    pub algorithm: RecoveryOptimizationAlgorithm,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RecoveryOptimizationAlgorithm {
    #[default]
    Greedy,
    Dynamic,
    Heuristic,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RecoveryPhase {
    #[default]
    Detection,
    Analysis,
    Execution,
    Verification,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryProgress {
    pub percent_complete: f64,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryRequest {
    pub deadlock: DetectedDeadlock,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryResult {
    pub success: bool,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryStatistics {
    pub total_recoveries: u64,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RecoveryStrategy {
    #[default]
    VictimSelection,
    Rollback,
    Timeout,
}

#[derive(Debug, Clone, Default)]
pub struct RecoveryVerification {
    pub method: RecoveryVerificationMethod,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RecoveryVerificationMethod {
    #[default]
    StateCheck,
    Invariants,
    Monitoring,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum RollbackMechanism {
    #[default]
    Checkpoint,
    Log,
    Snapshot,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum SelectionCriterion {
    #[default]
    LeastWork,
    MostWork,
    Random,
}

#[derive(Debug, Clone, Default)]
pub struct StateSynchronization {
    pub protocol: SynchronizationProtocol,
}

#[derive(Debug, Clone, Default)]
pub struct StrategyStatistics {
    pub success_count: u64,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum SynchronizationProtocol {
    #[default]
    TwoPhase,
    ThreePhase,
    Paxos,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum SystemHealth {
    #[default]
    Healthy,
    Degraded,
    Critical,
}

#[derive(Debug, Clone, Default)]
pub struct SystemState {
    pub health: SystemHealth,
}

#[derive(Debug, Clone, Default)]
pub struct VerificationSuccessCriteria {
    pub all_recovered: bool,
}

#[derive(Debug, Clone, Default)]
pub struct VictimSelection {
    pub algorithm: VictimSelectionAlgorithm,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub enum VictimSelectionAlgorithm {
    YoungestTransaction,
    #[default]
    LeastCost,
    Random,
}