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Struct actyx_sdk::service::SubscribeMonotonicRequest[][src]

pub struct SubscribeMonotonicRequest {
    pub session: SessionId,
    pub query: Query,
    pub from: StartFrom,
}
Expand description

Subscribe to live updates as the Event Services receives or publishes new events, until the recipient would need to time travel

Time travel is defined as receiving an event that needs to be sorted earlier than an event that has already been received.

Send this request to retrieve an unbounded stream of events.

Fields

session: SessionId

This id uniquely identifies one particular session. Connecting again with this SessionId shall only be done after a TimeTravel message has been received. The subscription is stored with the Session and all previous state is destroyed upon receiving a different subscription for this session.

query: Query

Definition of the events to be received by this session, i.e. a selection of tags coupled with other flags like “isLocal”.

from: StartFrom

The consumer may already have kept state and know at which point to resume a previously interrupted stream. In this case, StartFrom::Offsets is used, otherwise StartFrom::Snapshot indicates that the PondService shall figure out where best to start out from, possibly sending a State message first.

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