Module prelude

Re-exports§

callsite: Callsites represent the source locations from which spans or events originate.
client
dispatcher: Dispatches trace events to Subscribers.
event: Events represent single points in time during the execution of a program.
field: Span and Event key-value data.
instrument: Attach a span to a std::future::Future.
level_filters: Trace verbosity level filtering.
metadata: Metadata describing trace data.
server
span: Spans represent periods of time in which a program was executing in a particular context.
subscriber: Collects and records trace data.

debug: Constructs an event at the debug level.
debug_span: Constructs a span at the debug level.
enabled: Checks whether a span or event is enabled based on the provided metadata.
error: Constructs an event at the error level.
error_span: Constructs a span at the error level.
event: Constructs a new Event.
event_enabled: Tests whether an event with the specified level and target would be enabled.
info: Constructs an event at the info level.
info_span: Constructs a span at the info level.
lazy_static
metadata: Statically constructs new span metadata.
span: Constructs a new span.
span_enabled: Tests whether a span with the specified level and target would be enabled.
trace: Constructs an event at the trace level.
trace_span: Constructs a span at the trace level.
warn: Constructs an event at the warn level.
warn_span: Constructs a span at the warn level.

Context
Data: A type that encodes an arbitrary number of bytes of data. Typically used for Rread Twrite messages. This differs from a Vec<u8> in that it encodes the number of bytes using a u32 instead of a u16.
Dispatch: Dispatch trace data to a Subscriber.
Event: Events represent single points in time where something occurred during the execution of a program.
Frame
Framed: A unified Stream and Sink interface to an underlying I/O object, using the Encoder and Decoder traits to encode and decode frames.
Id: Identifies a span within the context of a subscriber.
Level: Describes the level of verbosity of a span or event.
Metadata: Metadata describing a span or event.
Span: A handle representing a span, with the capability to enter the span if it exists.
Tag

Callsite: Trait implemented by callsites.
ClientTransport
Framer
Instrument: Attaches spans to a std::future::Future.
LazyStatic: Support trait for enabling a few common operation on lazy static values.
Message: A trait representing a message that can be encoded and decoded.
Protocol: Defines the request and response types for the JetStream protocol.
Subscriber: Trait representing the functions required to collect trace data.
Value: A field value of an erased type.
WireFormat: A type that can be encoded on the wire using the 9P protocol.
__Deref: Used for immutable dereferencing operations, like *v.

initialize: Takes a shared reference to a lazy static and initializes it if it has not been already.

async_trait
instrument: Instruments a function to create and enter a tracing span every time the function is called.
make: Creates a specialized version of a base trait that adds bounds to async fn and/or -> impl Trait return types.
service: Service attribute macro for creating RPC services