tracing:
- counters: Implements a very simple metrics system to demonstrate how subscribers can consume field values as typed data.
- sloggish: A demo Subscriber implementation that mimics the output of slog-term's Compact formatter.
tracing-attributes:
- attrs-basic: A simple example of the #[instrument] attribute.
- attrs-args: An example implementing a simple recursive calculation of Fibonacci numbers, to demonstrate how the #[instrument] attribute can record function arguments.
tracing-subscriber:
- fmt: Demonstrates the use of the fmt module in tracing-subscriber, which provides a subscriber implementation that logs traces to the console.
- fmt-stderr: Demonstrates overriding the output stream used by the fmt subscriber.
- fmt-custom-field: Demonstrates overriding how the fmt subscriber formats fields on spans and events.
- fmt-custom-event: Demonstrates overriding how the fmt subscriber formats events.
- subscriber-filter: Demonstrates the tracing-subscriber::filter module, which provides a layer which adds configurable filtering to a subscriber implementation.
- tower-load: Demonstrates how dynamically reloadable filters can be used to debug a server under load in production.
tracing-futures:
- futures-proxy-server: Demonstrates the use of tracing-futures by implementing a simple proxy server, based on this example from tokio.
- async_fn: Demonstrates how asynchronous functions can be instrumented.
- echo: Demonstrates a tracing-instrumented variant of Tokio's echo example.
tracing-tower:
- tower-client: Demonstrates the use of tracing-tower to instrument a simple tower HTTP/1.1 client.
- tower-server: Demonstrates the use of tracing-tower to instrument a simple tower HTTP/1.1 server.
tracing-serde:
- serde-yak-shave: Demonstrates the use of tracing-serde by implementing a subscriber that emits trace output as JSON.
tracing-log:
- hyper-echo: Demonstrates how tracing-log can be used to record unstructured logs from dependencies as tracing events, by instrumenting this example from hyper, and using tracing-log to record logs emitted by hyper.