Module lambda_runtime::tracing

Utilities to initialize and use tracing and tracing-subscriber in Lambda Functions. This module provides primitives to work with tracing and tracing-subscriber in Lambda functions.

The tracing and tracing-subscriber crates are re-exported so you don’t have to include them as direct dependencies in your projects.

Modules

• callsite
  Callsites represent the source locations from which spans or events originate.
• 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.
• span
  Spans represent periods of time in which a program was executing in a particular context.
• subscriber
  Utilities for implementing and composing tracing subscribers.

Macros

• 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.
• 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.

Structs

• Dispatch
  Dispatch trace data to a Subscriber.
• Event
  Events represent single points in time where something occurred during the execution of a program.
• 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.

Traits

• Callsite
  Trait implemented by callsites.
• Instrument
  Attaches spans to a std::future::Future.
• Subscriber
  Trait representing the functions required to collect trace data.
• Value
  A field value of an erased type.

Functions

• init_default_subscriber
  Initialize tracing-subscriber with default logging options.

Attribute Macros

• instrument
  Instruments a function to create and enter a tracing span every time the function is called.