Merge branch 'master' into patch-1

.github/workflows/rust.yml

@@ -9,9 +9,9 @@ on:
 env:
   CARGO_TERM_COLOR: always
   # Pinned toolchain for linting and benchmarks
-  ACTIONS_LINTS_TOOLCHAIN: 1.63.0
+  ACTIONS_LINTS_TOOLCHAIN: 1.78.0
   # Minimum supported Rust version (MSRV)
-  ACTION_MSRV_TOOLCHAIN: 1.57.0
+  ACTION_MSRV_TOOLCHAIN: 1.74.0
   EXTRA_FEATURES: "protobuf push process"
 
 jobs:
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: cargo build
@@ -44,7 +44,7 @@ jobs:
           - "nightly"
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
@@ -62,7 +62,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
@@ -97,7 +97,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:

CHANGELOG.md

@@ -1,5 +1,19 @@
 # Changelog
 
+## 0.13.4
+
+- Improvement: Add PullingGauge (#405)
+
+- Improvement: Let cargo know which example requires which features (#511)
+
+- Bug fix: Prevent `clippy::ignored_unit_patterns` in macro expansions (#497)
+
+- Internal change: Add CI job for minimum toolchain (MSRV) (#467)
+
+- Internal change: Update CI to `actions/checkout@v4` (#499)
+
+- Internal change: Update dependencies
+
 ## 0.13.3
 
 - Bug fix: Prevent ProcessCollector underflow with CPU time counter (#465)

Cargo.toml

@@ -9,10 +9,7 @@ license = "Apache-2.0"
 name = "prometheus"
 readme = "README.md"
 repository = "https://github.com/tikv/rust-prometheus"
-version = "0.13.3"
-
-[badges]
-travis-ci = { repository = "pingcap/rust-prometheus" }
+version = "0.13.4"
 
 [package.metadata.docs.rs]
 features = ["nightly"]
@@ -32,14 +29,14 @@ libc = { version = "^0.2", optional = true }
 parking_lot = "^0.12"
 protobuf = { version = "^2.0", optional = true }
 memchr = "^2.3"
-reqwest = { version = "^0.11", features = ["blocking"], optional = true }
+reqwest = { version = "^0.12", features = ["blocking"], optional = true }
 thiserror = "^1.0"
 
 [target.'cfg(target_os = "linux")'.dependencies]
-procfs = { version = "^0.14", optional = true, default-features = false }
+procfs = { version = "^0.16", optional = true, default-features = false }
 
 [dev-dependencies]
-criterion = "0.4"
+criterion = "0.5"
 getopts = "^0.2"
 hyper = { version = "^0.14", features = ["server", "http1", "tcp"] }
 tokio = { version = "^1.0", features = ["macros", "rt-multi-thread"] }
@@ -73,3 +70,11 @@ harness = false
 [[bench]]
 name = "text_encoder"
 harness = false
+
+[[example]]
+name = "example_push"
+required-features = ["push"]
+
+[[example]]
+name = "example_process_collector"
+required-features = ["process"]

README.md

@@ -1,6 +1,6 @@
 # Prometheus Rust client library
 
-[![Build Status](https://travis-ci.org/tikv/rust-prometheus.svg?branch=master)](https://travis-ci.org/pingcap/rust-prometheus)
+[![Build Status](https://github.com/tikv/rust-prometheus/actions/workflows/rust.yml/badge.svg)](https://github.com/tikv/rust-prometheus/actions/workflows/rust.yml)
 [![docs.rs](https://docs.rs/prometheus/badge.svg)](https://docs.rs/prometheus)
 [![crates.io](https://img.shields.io/crates/v/prometheus.svg)](https://crates.io/crates/prometheus)
 

examples/example_process_collector.rs

@@ -1,6 +1,5 @@
 // Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
-#[cfg(all(feature = "process", target_os = "linux"))]
 fn main() {
     use std::thread;
     use std::time::Duration;
@@ -21,11 +20,3 @@ fn main() {
         thread::sleep(Duration::from_secs(1));
     }
 }
-
-#[cfg(any(not(feature = "process"), not(target_os = "linux")))]
-fn main() {
-    println!(
-        r#"Please enable feature "process", try:
-    cargo run --features="process" --example example_process_collector"#
-    );
-}

examples/example_push.rs

@@ -1,7 +1,5 @@
 // Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
-#![cfg_attr(not(feature = "push"), allow(unused_imports, dead_code))]
-
 use std::env;
 use std::thread;
 use std::time;
@@ -25,7 +23,6 @@ lazy_static! {
     .unwrap();
 }
 
-#[cfg(feature = "push")]
 fn main() {
     let args: Vec<String> = env::args().collect();
     let program = args[0].clone();
@@ -68,11 +65,3 @@ fn main() {
 
     println!("Okay, please check the Pushgateway.");
 }
-
-#[cfg(not(feature = "push"))]
-fn main() {
-    println!(
-        r#"Please enable feature "push", try:
-    cargo run --features="push" --example example_push"#
-    );
-}

src/macros.rs

@@ -214,7 +214,7 @@ fn test_histogram_opts_trailing_comma() {
 macro_rules! register_counter {
     (@of_type $TYPE:ident, $OPTS:expr) => {{
         let counter = $crate::$TYPE::with_opts($OPTS).unwrap();
-        $crate::register(Box::new(counter.clone())).map(|_| counter)
+        $crate::register(Box::new(counter.clone())).map(|()| counter)
     }};
 
     ($OPTS:expr $(,)?) => {{
@@ -260,7 +260,7 @@ fn test_register_counter_trailing_comma() {
 macro_rules! register_counter_with_registry {
     (@of_type $TYPE: ident, $OPTS:expr, $REGISTRY:expr) => {{
         let counter = $crate::$TYPE::with_opts($OPTS).unwrap();
-        $REGISTRY.register(Box::new(counter.clone())).map(|_| counter)
+        $REGISTRY.register(Box::new(counter.clone())).map(|()| counter)
     }};
 
     ($OPTS:expr, $REGISTRY:expr $(,)?) => {{
@@ -361,14 +361,14 @@ fn test_register_int_counter() {
 macro_rules! __register_counter_vec {
     ($TYPE:ident, $OPTS:expr, $LABELS_NAMES:expr) => {{
         let counter_vec = $crate::$TYPE::new($OPTS, $LABELS_NAMES).unwrap();
-        $crate::register(Box::new(counter_vec.clone())).map(|_| counter_vec)
+        $crate::register(Box::new(counter_vec.clone())).map(|()| counter_vec)
     }};
 
     ($TYPE:ident, $OPTS:expr, $LABELS_NAMES:expr, $REGISTRY:expr) => {{
         let counter_vec = $crate::$TYPE::new($OPTS, $LABELS_NAMES).unwrap();
         $REGISTRY
             .register(Box::new(counter_vec.clone()))
-            .map(|_| counter_vec)
+            .map(|()| counter_vec)
     }};
 }
 
@@ -543,12 +543,12 @@ fn test_register_int_counter_vec() {
 macro_rules! __register_gauge {
     ($TYPE:ident, $OPTS:expr) => {{
         let gauge = $crate::$TYPE::with_opts($OPTS).unwrap();
-        $crate::register(Box::new(gauge.clone())).map(|_| gauge)
+        $crate::register(Box::new(gauge.clone())).map(|()| gauge)
     }};
 
     ($TYPE:ident, $OPTS:expr, $REGISTRY:expr) => {{
         let gauge = $crate::$TYPE::with_opts($OPTS).unwrap();
-        $REGISTRY.register(Box::new(gauge.clone())).map(|_| gauge)
+        $REGISTRY.register(Box::new(gauge.clone())).map(|()| gauge)
     }};
 }
 
@@ -670,14 +670,14 @@ macro_rules! register_int_gauge_with_registry {
 macro_rules! __register_gauge_vec {
     ($TYPE:ident, $OPTS:expr, $LABELS_NAMES:expr $(,)?) => {{
         let gauge_vec = $crate::$TYPE::new($OPTS, $LABELS_NAMES).unwrap();
-        $crate::register(Box::new(gauge_vec.clone())).map(|_| gauge_vec)
+        $crate::register(Box::new(gauge_vec.clone())).map(|()| gauge_vec)
     }};
 
     ($TYPE:ident, $OPTS:expr, $LABELS_NAMES:expr, $REGISTRY:expr $(,)?) => {{
         let gauge_vec = $crate::$TYPE::new($OPTS, $LABELS_NAMES).unwrap();
         $REGISTRY
             .register(Box::new(gauge_vec.clone()))
-            .map(|_| gauge_vec)
+            .map(|()| gauge_vec)
     }};
 }
 
@@ -917,7 +917,7 @@ macro_rules! register_histogram {
 
     ($HOPTS:expr $(,)?) => {{
         let histogram = $crate::Histogram::with_opts($HOPTS).unwrap();
-        $crate::register(Box::new(histogram.clone())).map(|_| histogram)
+        $crate::register(Box::new(histogram.clone())).map(|()| histogram)
     }};
 }
 
@@ -974,7 +974,7 @@ macro_rules! register_histogram_with_registry {
         let histogram = $crate::Histogram::with_opts($HOPTS).unwrap();
         $REGISTRY
             .register(Box::new(histogram.clone()))
-            .map(|_| histogram)
+            .map(|()| histogram)
     }};
 }
 
@@ -1030,7 +1030,7 @@ fn test_register_histogram_with_registry_trailing_comma() {
 macro_rules! register_histogram_vec {
     ($HOPTS:expr, $LABELS_NAMES:expr $(,)?) => {{
         let histogram_vec = $crate::HistogramVec::new($HOPTS, $LABELS_NAMES).unwrap();
-        $crate::register(Box::new(histogram_vec.clone())).map(|_| histogram_vec)
+        $crate::register(Box::new(histogram_vec.clone())).map(|()| histogram_vec)
     }};
 
     ($NAME:expr, $HELP:expr, $LABELS_NAMES:expr $(,)?) => {{
@@ -1094,7 +1094,7 @@ macro_rules! register_histogram_vec_with_registry {
         let histogram_vec = $crate::HistogramVec::new($HOPTS, $LABELS_NAMES).unwrap();
         $REGISTRY
             .register(Box::new(histogram_vec.clone()))
-            .map(|_| histogram_vec)
+            .map(|()| histogram_vec)
     }};
 
     ($NAME:expr, $HELP:expr, $LABELS_NAMES:expr, $REGISTRY:expr $(,)?) => {{

src/registry.rs

@@ -183,8 +183,8 @@ impl RegistryCore {
 
         // Write out MetricFamilies sorted by their name.
         mf_by_name
-            .into_iter()
-            .map(|(_, mut m)| {
+            .into_values()
+            .map(|mut m| {
                 // Add registry namespace prefix, if any.
                 if let Some(ref namespace) = self.prefix {
                     let prefixed = format!("{}_{}", namespace, m.get_name());

static-metric/Cargo.toml

@@ -13,13 +13,13 @@ edition = "2018"
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0", features = ["full", "extra-traits"] }
+syn = { version = "2.0", features = ["full", "extra-traits"] }
 proc-macro2 = "1.0"
 quote = "1.0"
 lazy_static = "1.4"
 
 [dev-dependencies]
-criterion = "0.4"
+criterion = "0.5"
 prometheus = { path = "../" }
 
 [features]

static-metric/src/auto_flush_builder.rs

@@ -714,7 +714,6 @@ impl<'a> MetricBuilderContext<'a> {
                         })#local_suffix_call,
                     }
                 } else {
-                    let prev_labels_ident = prev_labels_ident;
                     quote! {
                         #name: #member_type::from(
                             #(

static-metric/src/builder.rs

@@ -300,7 +300,6 @@ impl<'a> MetricBuilderContext<'a> {
                         })#local_suffix_call,
                     }
                 } else {
-                    let prev_labels_ident = prev_labels_ident;
                     quote! {
                         #name: #member_type::from(
                             #(