struct SinkState {
pending_ok: BTreeMap<Timestamp, BTreeMap<(String, Vec<(String, String)>, Option<u64>, Option<MetricKind>, bool, String), i64>>,
pending_err: BTreeMap<Timestamp, i64>,
working: BTreeMap<(String, Vec<(String, String)>, Option<u64>, Option<MetricKind>, bool, String), i64>,
published: BTreeMap<(String, Vec<(String, String)>), (f64, MetricKind, String)>,
errors: i64,
frontier_ms: u64,
skipped: u64,
conflicts: u64,
collisions: u64,
null_values: u64,
}Expand description
Working and published metric state for one metric sink.
Because the input is not consolidated and a timestamp’s diffs may span several operator
activations, incoming updates are buffered by timestamp in pending_ok/pending_err and only
folded into working once the input frontier has closed that timestamp. working accumulates
a signed multiplicity per full row identity, and a row is live iff its accumulated diff is
positive.
published is what the collector exposes and is rebuilt from the live set of
working.
Fields§
§pending_ok: BTreeMap<Timestamp, BTreeMap<(String, Vec<(String, String)>, Option<u64>, Option<MetricKind>, bool, String), i64>>Ok-collection updates awaiting their timestamp closing, accumulated per identity.
pending_err: BTreeMap<Timestamp, i64>Err-collection diffs awaiting their timestamp closing.
working: BTreeMap<(String, Vec<(String, String)>, Option<u64>, Option<MetricKind>, bool, String), i64>Accumulated multiplicity per row identity over all closed timestamps.
published: BTreeMap<(String, Vec<(String, String)>), (f64, MetricKind, String)>§errors: i64Net count of live errors on the sink’s input. Can rise and fall as errors are retracted. Publication is frozen while this is nonzero.
frontier_ms: u64§skipped: u64§conflicts: u64§collisions: u64§null_values: u64Count of live (metric_name, labels) groups whose only live rows carry a null value,
so the series is currently absent from published (a gap) rather than published as some
number.
Implementations§
Source§impl SinkState
impl SinkState
Sourcefn stage_ok(
&mut self,
metric_name: &str,
metric_kind: Option<MetricKind>,
name_valid: bool,
labels: &[(&str, &str)],
value: Option<f64>,
help: &str,
time: Timestamp,
diff: i64,
)
fn stage_ok( &mut self, metric_name: &str, metric_kind: Option<MetricKind>, name_valid: bool, labels: &[(&str, &str)], value: Option<f64>, help: &str, time: Timestamp, diff: i64, )
Buffers one ok-collection update under its timestamp.
diff follows differential dataflow sign conventions and is accumulated per full row
identity, so an un-consolidated input carrying the same identity twice sums rather than
being mistaken for a second live row. Takes borrowed strings (see extract_row) and owns
them only here, once, at the point the identity is committed to pending_ok.
Sourcefn stage_err(&mut self, time: Timestamp, diff: i64)
fn stage_err(&mut self, time: Timestamp, diff: i64)
Buffers one err-collection diff under its timestamp.
Sourcefn integrate(&mut self, frontier: &Antichain<Timestamp>)
fn integrate(&mut self, frontier: &Antichain<Timestamp>)
Folds every buffered timestamp the frontier has closed into working and errors.
A timestamp is closed once the combined ok+err frontier can no longer produce data at it,
which guarantees all of its diffs are already buffered. Accumulated entries that reach a
multiplicity of zero are dropped. skipped is recomputed here from the live set, so it
counts the input rows currently dropped for an unsupported type or invalid name.
Sourcefn publish_if_healthy(&mut self)
fn publish_if_healthy(&mut self)
Rebuilds published and the collisions/conflicts counts from the live set of
working, but only while the dataflow is free of live errors. While errors > 0,
publication stays frozen at the last healthy snapshot. working keeps integrating closed
timestamps in the meantime, so the next healthy publish reflects everything that happened
during the freeze.
Trait Implementations§
Auto Trait Implementations§
impl Freeze for SinkState
impl RefUnwindSafe for SinkState
impl Send for SinkState
impl Sync for SinkState
impl Unpin for SinkState
impl UnsafeUnpin for SinkState
impl UnwindSafe for SinkState
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