Struct Checkpoint 

pub struct Checkpoint {
    pub sequence: u64,
    pub state_hash: [u8; 32],
    pub genesis_validators_root: Option<[u8; 32]>,
    pub validators: HashMap<[u8; 48], ValidatorState>,
    pub timestamp: u64,
}

A checkpoint of the enclave state

Fields

sequence: u64

Sequence number at this checkpoint

state_hash: [u8; 32]

State hash at this checkpoint

genesis_validators_root: Option<[u8; 32]>

Genesis validators root (if set)

validators: HashMap<[u8; 48], ValidatorState>

All validator states

timestamp: u64

Unix timestamp when checkpoint was created

Implementations

impl Checkpoint

pub fn new( integrity: &StateIntegrity, validators: HashMap<[u8; 48], ValidatorState>, ) -> Self

Create a new checkpoint from current state

pub fn save(&self, path: impl AsRef<Path>) -> Result<(), CheckpointError>

Save checkpoint to a file (simple, non-atomic)

pub fn save_atomic( &self, path: impl AsRef<Path>, backup_count: u32, ) -> Result<(), CheckpointError>

Save checkpoint atomically with backup rotation

This method:

1. Writes to a temporary file
2. Rotates existing checkpoint to backup
3. Atomically renames temp to target
4. Syncs the parent directory for durability

pub fn load(path: impl AsRef<Path>) -> Result<Self, CheckpointError>

Load checkpoint from a file

pub fn load_with_recovery( path: impl AsRef<Path>, backup_count: u32, ) -> Result<Self, CheckpointError>

Load checkpoint with fallback to backups

Tries to load from the primary checkpoint, then falls back to backups

pub fn restore_integrity(&self) -> StateIntegrity

Restore state integrity from this checkpoint

Trait Implementations

impl Clone for Checkpoint

fn clone(&self) -> Checkpoint

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Checkpoint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Checkpoint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Checkpoint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.