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trace: Add arguments struct to subscriber::Record (#955)

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This branch changes the `Subscriber::record` method to take a new
arguments struct, `span::Record`. The `field::Record` trait was renamed
to `field::Visit` to prevent name conflicts.

In addition, the `ValueSet::is_empty`, `ValueSet::contains`, and
`ValueSet::record` methods were made crate-private, as they are exposed
on the `Attributes` and `Record` types. 

Signed-off-by: Eliza Weisman <[email protected]>
This commit is contained in:
Eliza Weisman
2019-03-07 12:41:10 -08:00
committed by GitHub
parent 6fbef0a528
commit d88aba8d1c
12 changed files with 186 additions and 143 deletions
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tokio-trace/src/lib.rs
+2 -2
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@@ -247,10 +247,10 @@
//! #[macro_use]
//! extern crate tokio_trace;
//! # pub struct FooSubscriber;
//! # use tokio_trace::{span::{Id, Attributes}, Metadata, field::ValueSet};
//! # use tokio_trace::{span::{Id, Attributes, Record}, Metadata};
//! # impl tokio_trace::Subscriber for FooSubscriber {
//! # fn new_span(&self, _: &Attributes) -> Id { Id::from_u64(0) }
//! # fn record(&self, _: &Id, _: &ValueSet) {}
//! # fn record(&self, _: &Id, _: &Record) {}
//! # fn event(&self, _: &tokio_trace::Event) {}
//! # fn record_follows_from(&self, _: &Id, _: &Id) {}
//! # fn enabled(&self, _: &Metadata) -> bool { false }