Struct Config 

pub struct Config {
    pub thread_id: Option<String>,
    pub checkpoint_id: Option<String>,
    pub recursion_limit: usize,
    pub metadata: HashMap<String, Value>,
    pub tags: Vec<String>,
}

Configuration for graph execution.

Config controls various aspects of graph execution including which checkpoint to load, recursion limits, and custom metadata.

Example

use rust_langgraph::Config;

let config = Config::new()
    .with_thread_id("user-123")
    .with_recursion_limit(100)
    .with_metadata("user_name", "Alice");

Fields

thread_id: Option<String>

Thread ID for checkpoint isolation

checkpoint_id: Option<String>

Specific checkpoint ID to load (for time travel)

recursion_limit: usize

Maximum recursion depth before error

metadata: HashMap<String, Value>

Custom metadata

tags: Vec<String>

Tags for categorizing runs

Implementations

impl Config

pub fn new() -> Self

Create a new default configuration

pub fn with_thread_id(self, thread_id: impl Into<String>) -> Self

Set the thread ID for checkpoint isolation

pub fn with_checkpoint_id(self, checkpoint_id: impl Into<String>) -> Self

Set a specific checkpoint ID to load (for time travel)

pub fn with_recursion_limit(self, limit: usize) -> Self

Set the recursion limit

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

Add metadata

pub fn with_tag(self, tag: impl Into<String>) -> Self

Add a tag

pub fn ensure_thread_id(&mut self) -> &str

Get or create a thread ID

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Config

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

Formats the value using the given formatter.

impl Default for Config

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Config

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Config

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

where __S: Serializer,

Serialize this value into the given Serde serializer.