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RuntimeSubscriptionHub

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Struct RuntimeSubscriptionHub 

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pub struct RuntimeSubscriptionHub { /* private fields */ }
Expand description

Combines replay and live fanout for runtime event streams.

subscribe_run reads a replay page from the store and opens a live subscription to the run room in one call. The caller owns the ordering decision (replay first, then live).

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impl RuntimeSubscriptionHub

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pub fn new( event_store: Arc<dyn RuntimeEventStore>, stream_adapter: Arc<dyn RuntimeStreamAdapter>, ) -> RuntimeSubscriptionHub

Creates a hub over the given store and adapter.

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pub async fn subscribe_run( &self, run_id: RunId, after_seq: Option<u64>, limit: usize, ) -> Result<RuntimeSubscription, RuntimeSubscriptionError>

Returns replay events plus a live stream for run_id.

The live subscription is opened first so no event published between replay and subscription is lost; the caller deduplicates overlapping events via RuntimeEventEnvelope::seq.

§Errors

Returns RuntimeSubscriptionError::Live when the stream adapter refuses the live subscription, and RuntimeSubscriptionError::Replay when the event store cannot fulfil the replay request.

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