Struct mz_adapter::subscribe::ActiveSubscribe
source · pub struct ActiveSubscribe {
pub user: User,
pub conn_id: ConnectionId,
pub channel: Option<UnboundedSender<PeekResponseUnary>>,
pub emit_progress: bool,
pub as_of: Timestamp,
pub arity: usize,
pub cluster_id: ClusterId,
pub depends_on: BTreeSet<GlobalId>,
pub start_time: EpochMillis,
pub output: SubscribeOutput,
}
Expand description
A description of an active subscribe from coord’s perspective
Fields§
§user: User
The user of the session that created the subscribe.
conn_id: ConnectionId
The connection id of the session that created the subscribe.
channel: Option<UnboundedSender<PeekResponseUnary>>
Channel to send responses to the client.
The responses have the form PeekResponseUnary
but should perhaps become TailResponse
.
emit_progress: bool
Whether progress information should be emitted.
as_of: Timestamp
As of of subscribe
arity: usize
Number of columns in the output.
cluster_id: ClusterId
The cluster that the subscribe is running on.
depends_on: BTreeSet<GlobalId>
All GlobalId
s that the subscribe’s expression depends on.
start_time: EpochMillis
The time when the subscribe was started.
output: SubscribeOutput
How to modify output
Implementations§
source§impl ActiveSubscribe
impl ActiveSubscribe
pub(crate) fn initialize(&self)
fn send_progress_message(&self, upper: &Antichain<Timestamp>)
sourcepub(crate) fn process_response(&mut self, batch: SubscribeBatch)
pub(crate) fn process_response(&mut self, batch: SubscribeBatch)
Process a subscribe response.
Returns true
if the subscribe is finished.
sourcepub fn send(&self, response: PeekResponseUnary)
pub 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 !RefUnwindSafe for ActiveSubscribe
impl Send for ActiveSubscribe
impl Sync for ActiveSubscribe
impl Unpin for ActiveSubscribe
impl !UnwindSafe for ActiveSubscribe
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