Struct WorkflowCheckpoint 

pub struct WorkflowCheckpoint {
    pub id: CheckpointId,
    pub workflow_id: String,
    pub sequence: u64,
    pub timestamp: DateTime<Utc>,
    pub completed_tasks: Vec<TaskId>,
    pub failed_tasks: Vec<TaskId>,
    pub current_position: usize,
    pub total_tasks: usize,
    pub checksum: String,
    pub task_ids_checksum: String,
}

Snapshot of workflow execution state at a point in time.

Stores completed tasks, failed tasks, current execution position, and includes SHA-256 checksum for integrity validation.

Fields

id: CheckpointId

Unique checkpoint identifier

workflow_id: String

Workflow this checkpoint belongs to

sequence: u64

Checkpoint sequence number (monotonically increasing)

timestamp: DateTime<Utc>

Timestamp when checkpoint was created

completed_tasks: Vec<TaskId>

Tasks that have completed successfully

failed_tasks: Vec<TaskId>

Tasks that have failed

current_position: usize

Current position in execution order

total_tasks: usize

Total number of tasks in workflow

checksum: String

SHA-256 checksum for integrity verification

task_ids_checksum: String

Checksum of task IDs for graph drift detection

Implementations

impl WorkflowCheckpoint

pub fn from_executor( workflow_id: impl Into<String>, sequence: u64, executor: &WorkflowExecutor, position: usize, ) -> Self

Creates a checkpoint from current executor state.

Captures the current execution state including completed tasks, failed tasks, and current position. Computes SHA-256 checksum for integrity validation.

Arguments

• workflow_id - Workflow identifier
• sequence - Checkpoint sequence number
• executor - Reference to workflow executor
• position - Current position in execution order

pub fn validate(&self) -> Result<(), WorkflowError>

Validates the checkpoint’s checksum.

Verifies that the stored checksum matches the computed checksum of the checkpoint data. Returns an error if checksums don’t match.

Returns

• Ok(()) if checksum is valid
• Err(WorkflowError) if checksum mismatch detected

Trait Implementations

impl Clone for WorkflowCheckpoint

fn clone(&self) -> WorkflowCheckpoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WorkflowCheckpoint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WorkflowCheckpoint

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for WorkflowCheckpoint

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

where __S: Serializer,

Serialize this value into the given Serde serializer.