Struct Checkpoint 

pub struct Checkpoint {
    pub thread_id: String,
    pub checkpoint_id: String,
    pub state: HashMap<String, Value>,
    pub step: usize,
    pub pending_nodes: Vec<String>,
    pub metadata: HashMap<String, Value>,
    pub created_at: DateTime<Utc>,
}

Available on crate feature graph only.

Checkpoint data structure for persistence

Fields

thread_id: String

Thread identifier

checkpoint_id: String

Unique checkpoint ID

state: HashMap<String, Value>

State at this checkpoint

step: usize

Step number

pending_nodes: Vec<String>

Nodes pending execution

metadata: HashMap<String, Value>

Additional metadata

created_at: DateTime<Utc>

Creation timestamp

Implementations

impl Checkpoint

pub fn new( thread_id: &str, state: HashMap<String, Value>, step: usize, pending_nodes: Vec<String>, ) -> Checkpoint

Create a new checkpoint

pub fn with_metadata(self, key: &str, value: Value) -> Checkpoint

Add metadata to the 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<(), Error>

Formats the value using the given formatter.

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

fn deserialize<__D>( __deserializer: __D, ) -> Result<Checkpoint, <__D as Deserializer<'de>>::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 as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.