Struct tracing_actix_web_mozlog::JsonStorageLayer

pub struct JsonStorageLayer;

A layer to collect information about Tracing spans and provide it to other layers.

This is a re-exported entry from tracing_bunyan_formatter. This layer is only concerned with information storage, it does not do any formatting or provide any output.

It’s purpose is to store the fields associated to spans in an easy-to-consume format for downstream layers concerned with emitting a formatted representation of spans or events.

Trait Implementations

impl Clone for JsonStorageLayer

fn clone(&self) -> JsonStorageLayer

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for JsonStorageLayer

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<S> Layer<S> for JsonStorageLayer where
    S: Subscriber + for<'a> LookupSpan<'a>, 

fn new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>)

Span creation. This is the only occasion we have to store the fields attached to the span given that they might have been borrowed from the surrounding context.

fn on_enter(&self, span: &Id, ctx: Context<'_, S>)

When we enter a span for the first time save the timestamp in its extensions.

fn on_close(&self, span: Id, ctx: Context<'_, S>)

When we close a span, register how long it took in milliseconds.

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.

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.

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.

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.

fn on_event(&self, _event: &Event<'_>, _ctx: Context<'_, S>)

Notifies this layer that an event has occurred.

fn on_exit(&self, _id: &Id, _ctx: Context<'_, S>)

Notifies this layer that the span with the given ID was exited.

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.

fn and_then<L>(self, layer: L) -> Layered<L, Self, S> where
    L: Layer<S>, 

Composes this layer around the given Layer, returning a Layered struct implementing Layer.

fn with_subscriber(self, inner: S) -> Layered<Self, S, S>

Composes this Layer with the given Subscriber, returning a Layered struct that implements Subscriber.