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pub struct Dispatch { /* private fields */ }
Expand description

Dispatch trace data to a Subscriber.

Implementations

Returns a new Dispatch that discards events and spans.

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

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: The 
    try_close method is functionally identical, but returns
    true 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.

Trait Implementations

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more

Returns the current default dispatcher

Converts to this type from the input type.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.
Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more