Struct tracing_core::Dispatch [−][src]
pub struct Dispatch { /* fields omitted */ }
Expand description
Dispatch
trace data to a Subscriber
.
Implementations
Returns a Dispatch
that forwards to the given Subscriber
.
Registers a new callsite with this subscriber, returning whether or not the subscriber is interested in being notified about the callsite.
This calls the register_callsite
function on the Subscriber
that this Dispatch
forwards to.
Record the construction of a new span, returning a new ID for the span being constructed.
This calls the new_span
function on the Subscriber
that this
Dispatch
forwards to.
Record a set of values on a span.
This calls the record
function on the Subscriber
that this
Dispatch
forwards to.
Adds an indication that span
follows from the span with the id
follows
.
This calls the record_follows_from
function on the Subscriber
that this Dispatch
forwards to.
Returns true if a span with the specified metadata would be recorded.
This calls the enabled
function on the Subscriber
that this
Dispatch
forwards to.
Records that an Event
has occurred.
This calls the event
function on the Subscriber
that this
Dispatch
forwards to.
Records that a span has been can_enter.
This calls the enter
function on the Subscriber
that this
Dispatch
forwards to.
Records that a span has been exited.
This calls the exit
function on the Subscriber
that this
Dispatch
forwards to.
Notifies the subscriber that a span ID has been cloned.
This function must only be called with span IDs that were returned by
this Dispatch
’s new_span
function. The tracing
crate upholds
this guarantee and any other libraries implementing instrumentation APIs
must as well.
This calls the clone_span
function on the Subscriber
that this
Dispatch
forwards to.
👎 Deprecated since 0.1.2: use Dispatch::try_close
instead
use Dispatch::try_close
instead
Notifies the subscriber that a span ID has been dropped.
This function must only be called with span IDs that were returned by
this Dispatch
’s new_span
function. The tracing
crate upholds
this guarantee and any other libraries implementing instrumentation APIs
must as well.
This calls the drop_span
function on the Subscriber
that this
Dispatch
forwards to.
Deprecated: Thetry_close
method is functionally identical, but returnstrue
if the span is now closed. It should be used instead of this method.
Notifies the subscriber that a span ID has been dropped, and returns
true
if there are now 0 IDs referring to that span.
This function must only be called with span IDs that were returned by
this Dispatch
’s new_span
function. The tracing
crate upholds
this guarantee and any other libraries implementing instrumentation APIs
must as well.
This calls the try_close
function on the Subscriber
that this
Dispatch
forwards to.
Returns a type representing this subscriber’s view of the current span.
This calls the current
function on the Subscriber
that this
Dispatch
forwards to.
Returns true
if this Dispatch
forwards to a Subscriber
of type
T
.
Returns some reference to the Subscriber
this Dispatch
forwards to
if it is of type T
, or None
if it isn’t.