pub struct ActiveSubscribe {
pub conn_id: ConnectionId,
pub session_uuid: Uuid,
pub cluster_id: ClusterId,
pub depends_on: BTreeSet<GlobalId>,
pub channel: UnboundedSender<PeekResponseUnary>,
pub emit_progress: bool,
pub as_of: Timestamp,
pub arity: usize,
pub start_time: EpochMillis,
pub output: SubscribeOutput,
}
Expand description
A description of an active subscribe from coord’s perspective
Fields§
§conn_id: ConnectionId
The ID of the connection which created the subscribe.
session_uuid: Uuid
The UUID of the session which created the subscribe.
cluster_id: ClusterId
The ID of the cluster on which the subscribe is running.
depends_on: BTreeSet<GlobalId>
The IDs of the objects on which the subscribe depends.
channel: UnboundedSender<PeekResponseUnary>
Channel on which to send responses to the client.
emit_progress: bool
Whether progress information should be emitted.
as_of: Timestamp
The logical timestamp at which the subscribe began execution.
arity: usize
The number of columns in the relation that was subscribed to.
start_time: EpochMillis
The time when the subscribe started.
output: SubscribeOutput
How to present the subscribe’s output.
Implementations§
Source§impl ActiveSubscribe
impl ActiveSubscribe
Sourcepub fn initialize(&self)
pub fn initialize(&self)
Initializes the subscription.
This method must be called exactly once, after constructing an
ActiveSubscribe
and before calling process_response
.
fn send_progress_message(&self, upper: &Antichain<Timestamp>)
Sourcepub fn process_response(&self, batch: SubscribeBatch) -> bool
pub fn process_response(&self, batch: SubscribeBatch) -> bool
Processes a subscribe response from the controller.
Returns true
if the subscribe is finished.
Sourcepub fn retire(self, reason: ActiveComputeSinkRetireReason)
pub fn retire(self, reason: ActiveComputeSinkRetireReason)
Retires the subscribe with the specified reason.
This method must be called on every subscribe before it is dropped. It informs the end client that the subscribe is finished for the specified reason.
Sourcefn send(&self, response: PeekResponseUnary)
fn send(&self, response: PeekResponseUnary)
Sends a message to the client if the subscribe has not already completed and if the client has not already gone away.
Trait Implementations§
Auto Trait Implementations§
impl Freeze for ActiveSubscribe
impl RefUnwindSafe for ActiveSubscribe
impl Send for ActiveSubscribe
impl Sync for ActiveSubscribe
impl Unpin for ActiveSubscribe
impl UnwindSafe for ActiveSubscribe
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