Struct PrependBuild 

pub struct PrependBuild<F> {
    inner: F,
}

Wraps a JSON [FormatEvent] so the rendered object always begins with a "build" key.

The wrapper renders the inner formatter into a temporary String, then rewrites the leading { to {"build":"<variant>",. All other keys, span context, and trailing newline produced by the inner formatter are preserved verbatim, so existing CloudWatch Insights queries keep working.

Fields

inner: F

Implementations

impl<F> PrependBuild<F>

pub fn new(inner: F) -> Self

Wrap inner so its rendered events are prefixed with the build key.

Trait Implementations

impl<S, N, F> FormatEvent<S, N> for PrependBuild<F>

where S: Subscriber + for<'a> LookupSpan<'a>, N: for<'a> FormatFields<'a> + 'static, F: FormatEvent<S, N>,

fn format_event( &self, ctx: &FmtContext<'_, S, N>, writer: Writer<'_>, event: &Event<'_>, ) -> Result

Write a log message for [Event] in [FmtContext] to the given [Writer].