Merge remote-tracking branch 'prometheus/master' into hist-exp

CHANGELOG.md

@@ -18,8 +18,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Implement `Atomic<u64>` for `AtomicU64` for gauges.
   See [PR 226].
 
-[PR 226]: https://github.com/prometheus/client_rust/pull/198
+- Implement `EnableLabelValue` for `bool`.
+  See [PR 237]
+
+[PR 173]: https://github.com/prometheus/client_rust/pull/173
 [PR 198]: https://github.com/prometheus/client_rust/pull/198
+[PR 226]: https://github.com/prometheus/client_rust/pull/226
+[PR 237]: https://github.com/prometheus/client_rust/pull/237
 
 ### Added
 
@@ -32,10 +37,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add `histogram::exponential_buckets_range`.
   See [PR 233].
 
+- Added `get` method to `Family`.
+  See [PR 234].
+
 [PR 173]: https://github.com/prometheus/client_rust/pull/173
 [PR 216]: https://github.com/prometheus/client_rust/pull/216
 [PR 217]: https://github.com/prometheus/client_rust/pull/217
 [PR 233]: https://github.com/prometheus/client_rust/pull/233
+[PR 234]: https://github.com/prometheus/client_rust/pull/234
 
 ### Fixed
 

CONTRIBUTING.md

@@ -0,0 +1,26 @@
+# Contributing
+
+## Protocol Buffers
+
+The `build.rs` script in this library depends upon the
+[Protocol Buffers compiler][protoc]. Be sure that `protoc` is installed and
+available within your `PATH`.
+
+[protoc]: https://docs.rs/prost-build/latest/prost_build/#sourcing-protoc
+
+## Python Dependencies
+
+This repository uses the [`prometheus-client`][client-python] Python client
+library in its test suite.
+
+You may create and activate a virtual environment with this dependency
+installed by running the following shell commands from the root of this
+repository:
+
+```shell
+python -m venv ./venv
+source venv/bin/activate
+pip install prometheus-client
+```
+
+[client-python]: https://github.com/prometheus/client_python

Cargo.toml

@@ -30,6 +30,7 @@ log = "0.4.22"
 async-std = { version = "1", features = ["attributes"] }
 axum = "0.7"
 criterion = "0.5"
+futures = "0.3"
 http-types = "2"
 pyo3 = "0.22"
 quickcheck = "1"

examples/hyper.rs

@@ -1,3 +1,4 @@
+use futures::future::BoxFuture;
 use http_body_util::{combinators, BodyExt, Full};
 use hyper::{
     body::{Bytes, Incoming},
@@ -8,10 +9,8 @@ use hyper::{
 use hyper_util::rt::TokioIo;
 use prometheus_client::{encoding::text::encode, metrics::counter::Counter, registry::Registry};
 use std::{
-    future::Future,
     io,
     net::{IpAddr, Ipv4Addr, SocketAddr},
-    pin::Pin,
     sync::Arc,
 };
 use tokio::{
@@ -69,8 +68,7 @@ type BoxBody = combinators::BoxBody<Bytes, hyper::Error>;
 /// This function returns a HTTP handler (i.e. another function)
 pub fn make_handler(
     registry: Arc<Registry>,
-) -> impl Fn(Request<Incoming>) -> Pin<Box<dyn Future<Output = io::Result<Response<BoxBody>>> + Send>>
-{
+) -> impl Fn(Request<Incoming>) -> BoxFuture<'static, io::Result<Response<BoxBody>>> {
     // This closure accepts a request and responds with the OpenMetrics encoding of our metrics.
     move |_req: Request<Incoming>| {
         let reg = registry.clone();