Struct TaskGraph 

pub struct TaskGraph {
    pub id: Uuid,
    pub project_id: Uuid,
    pub name: String,
    pub description: Option<String>,
    pub state: GraphState,
    pub tasks: HashMap<Uuid, GraphTask>,
    pub dependencies: HashMap<Uuid, HashSet<Uuid>>,
    pub created_at: DateTime<Utc>,
    pub updated_at: DateTime<Utc>,
}

A TaskGraph - static DAG of planned intent.

Fields

id: Uuid

Unique graph ID.

project_id: Uuid

Associated project ID.

name: String

Graph name.

description: Option<String>

Graph description.

state: GraphState

Current state.

tasks: HashMap<Uuid, GraphTask>

Task nodes.

dependencies: HashMap<Uuid, HashSet<Uuid>>

Dependencies (task_id -> set of dependency task_ids).

created_at: DateTime<Utc>

Creation timestamp.

updated_at: DateTime<Utc>

Last update timestamp.

Implementations

impl TaskGraph

pub fn new(project_id: Uuid, name: impl Into<String>) -> Self

Creates a new draft TaskGraph.

pub fn is_modifiable(&self) -> bool

Checks if the graph is modifiable.

pub fn add_task(&mut self, task: GraphTask) -> Result<Uuid, GraphError>

Adds a task to the graph.

Errors

Returns an error if the graph is locked.

pub fn add_dependency(&mut self, from: Uuid, to: Uuid) -> Result<(), GraphError>

Adds a dependency between tasks.

Errors

Returns an error if the graph is locked, tasks don’t exist, or would create a cycle.

pub fn set_scope( &mut self, task_id: Uuid, scope: Scope, ) -> Result<(), GraphError>

Sets scope for a task.

Errors

Returns an error if the graph is locked or task doesn’t exist.

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

Validates the graph and transitions to Validated state.

Errors

Returns an error if validation fails.

pub fn lock(&mut self) -> Result<(), GraphError>

Locks the graph (immutable after this).

Errors

Returns an error if the graph is not validated.

pub fn topological_order(&self) -> Vec<Uuid>

Returns tasks in topological order (dependencies first).

pub fn root_tasks(&self) -> Vec<Uuid>

Gets tasks that have no dependencies (entry points).

pub fn dependents(&self, task_id: Uuid) -> Vec<Uuid>

Gets tasks that depend on a given task.

Trait Implementations

impl Clone for TaskGraph

fn clone(&self) -> TaskGraph

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TaskGraph

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TaskGraph

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TaskGraph

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

where __S: Serializer,

Serialize this value into the given Serde serializer.