log-args-runtime
log-args-runtime
is a lightweight runtime support crate for the log-args
procedural macro. It provides thread-local storage and context management for structured logging spans and arguments.
Purpose
This crate is not intended for direct use by end users. Instead, it is used internally by code generated by the log-args
macro to propagate contextual information (such as parent spans) at runtime.
Usage
You generally do not need to depend on log-args-runtime
directly. It is used automatically when you use the log-args
macro in your code. However, if you are developing custom integrations or want to interact with the runtime context, you can use the following API:
use __PARENT_LOG_ARGS;
// Example: setting and retrieving the parent log context
__PARENT_LOG_ARGS.with;
__PARENT_LOG_ARGS.with;
How it Works
- The crate exposes a thread-local variable
__PARENT_LOG_ARGS
which stores an optional string representing the parent log context. - This is used by the macro-generated code to propagate span or context information across function boundaries.
License
See the main repository for license information.