Module context 

Available on crate feature std only.

Thread-local logging context.

Context carries ambient key-value data that gets attached to every record emitted from the current thread. Typical use: stash a trace_id / request_id at the entry of a request handler so all downstream log lines correlate. The ContextGuard returned by with_field (and friends) removes the value when dropped.

Context is intentionally thread-scoped. For async task propagation, capture context fields at task spawn and re-install them on the task’s executor thread; this crate does not depend on a specific async runtime.

Structs

ContextGuard

RAII guard that removes a context slot when dropped.

Constants

MAX_CONTEXT_SLOTS

Maximum number of context slots per thread. Fixed-size so the snapshot path is allocation-free.

Functions

clear

Remove all context entries on the current thread.

len

Number of context entries on the current thread.

with_field

Push a key/value pair onto the current thread’s context.

with_request_id

Convenience: push a request_id field.

with_snapshot

Run f with the current thread’s context exposed as a borrowed slice of Field. No allocation: the slice is filled from a stack-resident buffer.

with_trace_id

Convenience: push a trace_id field.