Struct Checkpoint 

pub struct Checkpoint {
    pub id: String,
    pub state: Value,
    pub next_node: Option<String>,
    pub parent_id: Option<String>,
    pub metadata: HashMap<String, Value>,
}

A snapshot of graph state at a point in execution.

Fields

id: String

Unique identifier for this checkpoint.

state: Value

Serialized graph state.

next_node: Option<String>

The next node to execute (or None if graph completed).

parent_id: Option<String>

ID of the previous checkpoint (for traversing history).

metadata: HashMap<String, Value>

Metadata about this checkpoint (node name, timestamp, etc.).

Implementations

impl Checkpoint

pub fn new(state: Value, next_node: Option<String>) -> Self

Create a new checkpoint with auto-generated ID.

pub fn with_parent(self, parent_id: impl Into<String>) -> Self

Set the parent checkpoint ID.

pub fn with_metadata(self, key: impl Into<String>, value: Value) -> Self

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

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.