pub struct DagExecutor { /* private fields */ }Expand description
DAG executor that processes pipeline graphs
Executes scraping pipelines as directed acyclic graphs using petgraph.
Independent branches are executed concurrently using tokio::spawn.
Data from upstream nodes is passed as input to downstream nodes.
Implementations§
Source§impl DagExecutor
impl DagExecutor
Sourcepub fn new() -> Self
pub fn new() -> Self
Create a new DAG executor
§Example
use stygian_graph::domain::graph::DagExecutor;
let executor = DagExecutor::new();Sourcepub fn from_pipeline(pipeline: &Pipeline) -> Result<Self, StygianError>
pub fn from_pipeline(pipeline: &Pipeline) -> Result<Self, StygianError>
Build a graph from a pipeline definition
§Errors
Returns GraphError::CycleDetected if the pipeline contains a cycle.
Returns GraphError::NodeNotFound if an edge references an unknown node.
Sourcepub async fn execute(
&self,
services: &HashMap<String, Arc<dyn ScrapingService>>,
) -> Result<Vec<NodeResult>, StygianError>
pub async fn execute( &self, services: &HashMap<String, Arc<dyn ScrapingService>>, ) -> Result<Vec<NodeResult>, StygianError>
Execute the pipeline using the provided service registry.
Nodes are executed in topological order. Independent nodes at the same
depth are spawned concurrently via tokio::spawn. The output of each
node is available to all downstream nodes as their ServiceInput.params.
§Errors
Returns GraphError::ExecutionFailed if any node execution fails.
Trait Implementations§
Auto Trait Implementations§
impl Freeze for DagExecutor
impl RefUnwindSafe for DagExecutor
impl Send for DagExecutor
impl Sync for DagExecutor
impl Unpin for DagExecutor
impl UnsafeUnpin for DagExecutor
impl UnwindSafe for DagExecutor
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