Struct mz_repr::explain_new::PlanTrace
source · pub struct PlanTrace<T> { /* private fields */ }
Expand description
A tracing layer used to accumulate a sequence of explainable plans.
Implementations§
source§impl<T: Clone + 'static> PlanTrace<T>
impl<T: Clone + 'static> PlanTrace<T>
sourcepub fn find(path: &'static str) -> Self
pub fn find(path: &'static str) -> Self
Create a new trace for plans of type T
that will only accumulate
TraceEntry
instances along the prefix of the given path
.
sourcepub fn drain_as_vec(&self) -> Vec<TraceEntry<T>> ⓘwhere
T: Debug,
pub fn drain_as_vec(&self) -> Vec<TraceEntry<T>> ⓘwhere
T: Debug,
Drain the trace data collected so far.
Note that this method will mutate the internal state of the enclosing
PlanTrace
even though its receiver is not &mut self
. This quirk is
required because the tracing Dispatch
does not have downcast_mut
method.
Trait Implementations§
source§impl<S, T> Layer<S> for PlanTrace<T>where
S: Subscriber + for<'span> LookupSpan<'span>,
T: 'static,
impl<S, T> Layer<S> for PlanTrace<T>where
S: Subscriber + for<'span> LookupSpan<'span>,
T: 'static,
A layer::Layer
implementation for PlanTrace
.
Populates the data
wrapped by the PlanTrace
instance with
TraceEntry
values, one for each span with attached plan in its
extensions map.
source§fn on_new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)
fn on_new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)
Notifies this layer that a new span was constructed with the given
Attributes
and Id
.source§fn on_enter(&self, _id: &Id, _ctx: Context<'_, S>)
fn on_enter(&self, _id: &Id, _ctx: Context<'_, S>)
Notifies this layer that a span with the given ID was entered.
source§fn on_exit(&self, _id: &Id, _ctx: Context<'_, S>)
fn on_exit(&self, _id: &Id, _ctx: Context<'_, S>)
Notifies this layer that the span with the given ID was exited.
source§fn on_register_dispatch(&self, collector: &Dispatch)
fn on_register_dispatch(&self, collector: &Dispatch)
Performs late initialization when installing this layer as a
Subscriber
. Read moresource§fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest
fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest
Registers a new callsite with this layer, returning whether or not
the layer is interested in being notified about the callsite, similarly
to
Subscriber::register_callsite
. Read moresource§fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool
fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool
Returns
true
if this layer is interested in a span or event with the
given metadata
in the current Context
, similarly to
Subscriber::enabled
. Read moresource§fn on_record(&self, _span: &Id, _values: &Record<'_>, _ctx: Context<'_, S>)
fn on_record(&self, _span: &Id, _values: &Record<'_>, _ctx: Context<'_, S>)
Notifies this layer that a span with the given
Id
recorded the given
values
.source§fn on_follows_from(&self, _span: &Id, _follows: &Id, _ctx: Context<'_, S>)
fn on_follows_from(&self, _span: &Id, _follows: &Id, _ctx: Context<'_, S>)
Notifies this layer that a span with the ID
span
recorded that it
follows from the span with the ID follows
.source§fn event_enabled(&self, _event: &Event<'_>, _ctx: Context<'_, S>) -> bool
fn event_enabled(&self, _event: &Event<'_>, _ctx: Context<'_, S>) -> bool
Called before
on_event
, to determine if on_event
should be called.source§fn on_event(&self, _event: &Event<'_>, _ctx: Context<'_, S>)
fn on_event(&self, _event: &Event<'_>, _ctx: Context<'_, S>)
Notifies this layer that an event has occurred.
source§fn on_close(&self, _id: Id, _ctx: Context<'_, S>)
fn on_close(&self, _id: Id, _ctx: Context<'_, S>)
Notifies this layer that the span with the given ID has been closed.
source§fn on_id_change(&self, _old: &Id, _new: &Id, _ctx: Context<'_, S>)
fn on_id_change(&self, _old: &Id, _new: &Id, _ctx: Context<'_, S>)
Notifies this layer that a span ID has been cloned, and that the
subscriber returned a different ID.
source§fn and_then<L>(self, layer: L) -> Layered<L, Self, S>where
L: Layer<S>,
Self: Sized,
fn and_then<L>(self, layer: L) -> Layered<L, Self, S>where
L: Layer<S>,
Self: Sized,
Composes this layer around the given
Layer
, returning a Layered
struct implementing Layer
. Read moresource§fn with_subscriber(self, inner: S) -> Layered<Self, S, S>where
Self: Sized,
fn with_subscriber(self, inner: S) -> Layered<Self, S, S>where
Self: Sized,
Composes this
Layer
with the given Subscriber
, returning a
Layered
struct that implements Subscriber
. Read moreAuto Trait Implementations§
impl<T> RefUnwindSafe for PlanTrace<T>
impl<T> Send for PlanTrace<T>where
T: Send,
impl<T> Sync for PlanTrace<T>where
T: Send,
impl<T> Unpin for PlanTrace<T>where
T: Unpin,
impl<T> UnwindSafe for PlanTrace<T>
Blanket Implementations§
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
source§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T
in a tonic::Request
source§impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
source§fn into_rust(self) -> Result<R, TryFromProtoError>
fn into_rust(self) -> Result<R, TryFromProtoError>
See
RustType::from_proto
.source§fn from_rust(rust: &R) -> P
fn from_rust(rust: &R) -> P
See
RustType::into_proto
.