Struct StartWorkflowContext 

pub struct StartWorkflowContext {
    pub store: Arc<dyn EventStore>,
    pub visibility_store: Arc<dyn VisibilityStore>,
    pub catalog: Arc<WorkflowCatalog>,
    pub runtime: Arc<RuntimeHandle>,
    pub supervision: Arc<SupervisionTree>,
    pub registry: Arc<Registry>,
    pub signal_handoff: Option<Arc<SignalResumeHandoff>>,
    pub search_attribute_schema: Arc<SearchAttributeSchema>,
    pub monitor_tokio_handle: Handle,
}

Dependencies required to start one workflow execution.

Fields

store: Arc<dyn EventStore>

Durable event store used by the workflow’s single recorder.

visibility_store: Arc<dyn VisibilityStore>

Visibility index updated after state-changing workflow events.

catalog: Arc<WorkflowCatalog>

Shared workflow catalog resolving types to loaded package versions.

runtime: Arc<RuntimeHandle>

Runtime boundary used to spawn the workflow process.

supervision: Arc<SupervisionTree>

Structural supervision tree recording the per-type supervisor placement.

registry: Arc<Registry>

Active execution registry keyed by workflow/run identifiers.

signal_handoff: Option<Arc<SignalResumeHandoff>>

Shared non-resident signal handoff to flush after resident registration.

search_attribute_schema: Arc<SearchAttributeSchema>

Schema validating any initial search attributes before they are recorded.

monitor_tokio_handle: Handle

Tokio handle the spawned workflow’s exit monitor captures for its completion work. Must be epoch-stable — the host runtime’s handle, never an engine-owned task runtime’s — because the monitor outlives the start call and blocks on this handle when the process exits.