update to opentelemetry 0.24 (#179)

* update to opentelemetry 0.24

* replace `Unit` with the literal directly

* update feature flag

* update import

* update more otel stuff

* use the correct version in readme

* pr review

* update example also to new otel version

* cargo fmt

Author: mellowagain

.github/workflows/ci.yml

@@ -22,15 +22,15 @@ jobs:
       - run: cargo clippy --features=metrics-0_21,prometheus-exporter
       - run: cargo clippy --features=prometheus-0_13
       - run: cargo clippy --features=prometheus-client-0_22
-      - run: cargo clippy --features=opentelemetry-0_21
+      - run: cargo clippy --features=opentelemetry-0_24
 
       # Run the tests with each of the different metrics libraries
       - run: cargo test --features=prometheus-exporter
       - run: cargo test --features=prometheus-exporter,metrics-0_21
       - run: cargo test --features=prometheus-exporter,prometheus-0_13
       - run: cargo test --features=prometheus-exporter,prometheus-client-0_22,exemplars-tracing
-      - run: cargo test --features=prometheus-exporter,prometheus-client-0_22,exemplars-tracing-opentelemetry-0_22
-      - run: cargo test --features=prometheus-exporter,opentelemetry-0_21
+      - run: cargo test --features=prometheus-exporter,prometheus-client-0_22,exemplars-tracing-opentelemetry-0_25
+      - run: cargo test --features=prometheus-exporter,opentelemetry-0_24
 
       # Build the crate using the other optional features
       - run: cargo build --features=metrics-0_21,custom-objective-percentile,custom-objective-latency

CHANGELOG.md

@@ -9,7 +9,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-- 
+### Breaking changes
+
+- `opentelemetry` has been updated to v0.24 (#179)  
+  New feature flags: `opentelemetry-0_24`, `exemplars-tracing-opentelemetry-0_25`  
+  Removed feature flags: `opentelemetry-0_21`, `exemplars-tracing-opentelemetry-0_22`
+
+**If you are using these metrics library separately in your application in addition 
+to Autometrics, ensure that you match the version that Autometrics uses.**
 
 ## [1.0.1](https://github.com/autometrics-dev/autometrics-rs/releases/tag/v1.0.1) - 2024-02-12
 

autometrics/Cargo.toml

@@ -15,16 +15,16 @@ readme = "README.md"
 [features]
 # Metrics backends
 metrics-0_21 = ["dep:metrics"]
-opentelemetry-0_21 = ["opentelemetry/metrics", "dep:prometheus"]
+opentelemetry-0_24 = ["opentelemetry/metrics", "dep:prometheus"]
 prometheus-0_13 = ["dep:prometheus"]
 prometheus-client-0_22 = ["dep:prometheus-client"]
 
 # Deprecated feature flags
 metrics = ["metrics-0_21"]
-opentelemetry = ["opentelemetry-0_21"]
+opentelemetry = ["opentelemetry-0_24"]
 prometheus = ["prometheus-0_13"]
 prometheus-client = ["prometheus-client-0_22"]
-exemplars-tracing-opentelemetry = ["exemplars-tracing-opentelemetry-0_22"]
+exemplars-tracing-opentelemetry = ["exemplars-tracing-opentelemetry-0_25"]
 
 # Misc
 prometheus-exporter = [
@@ -72,11 +72,11 @@ otel-push-exporter-async-std = [
 
 # Exemplars
 exemplars-tracing = ["tracing", "tracing-subscriber"]
-exemplars-tracing-opentelemetry-0_22 = [
+exemplars-tracing-opentelemetry-0_25 = [
   "dep:opentelemetry",
   "opentelemetry_sdk/trace",
   "tracing",
-  "dep:tracing-opentelemetry-0-22",
+  "dep:tracing-opentelemetry",
 ]
 
 # Custom objectives
@@ -91,19 +91,19 @@ spez = "0.1.2"
 thiserror = "1"
 
 # Used for opentelemetry feature
-opentelemetry = { version = "0.21", default-features = false, optional = true }
+opentelemetry = { version = "0.24", default-features = false, optional = true }
 
 # Use for metrics feature
 metrics = { version = "0.21", default-features = false, optional = true }
 
 # Used for prometheus-exporter feature
 http = { version = "1.0.0", optional = true }
 metrics-exporter-prometheus = { version = "0.12", default-features = false, optional = true }
-opentelemetry-prometheus = { version = "0.14", optional = true }
-opentelemetry_sdk = { version = "0.21", default-features = false, features = [
+opentelemetry-prometheus = { version = "0.17", optional = true }
+opentelemetry_sdk = { version = "0.24.1", default-features = false, features = [
   "metrics",
 ], optional = true }
-opentelemetry-otlp = { version = "0.14.0", default-features = false, optional = true }
+opentelemetry-otlp = { version = "0.17", default-features = false, optional = true }
 prometheus = { version = "0.13", default-features = false, optional = true }
 
 # Used for prometheus-client feature
@@ -116,15 +116,15 @@ tracing-subscriber = { version = "0.3", default-features = false, features = [
 ], optional = true }
 
 # Used for exemplars-tracing-opentelemetry feature
-tracing-opentelemetry-0-22 = { package = "tracing-opentelemetry", version = "0.22", default-features = false, optional = true }
+tracing-opentelemetry = { version = "0.25", default-features = false, optional = true }
 
 [dev-dependencies]
 async-trait = "0.1.74"
 axum = { version = "0.7.2", features = ["tokio"] }
 criterion = "0.5"
 http = "1.0.0"
-opentelemetry = "0.21"
-opentelemetry-stdout = { version = "0.2", features = ["trace"] }
+opentelemetry = "0.24"
+opentelemetry-stdout = { version = "0.5", features = ["trace"] }
 prometheus-client = "0.22"
 tokio = { version = "1", features = ["full"] }
 tracing = "0.1"

autometrics/build.rs

@@ -6,18 +6,18 @@ pub fn main() {
     #[cfg(feature = "metrics")]
     println!("cargo:warning=The `metrics` feature is deprecated and will be removed in the next version. Please use `metrics-0_21` instead.");
     #[cfg(feature = "opentelemetry")]
-    println!("cargo:warning=The `opentelemetry` feature is deprecated and will be removed in the next version. Please use `opentelemetry-0_21` instead.");
+    println!("cargo:warning=The `opentelemetry` feature is deprecated and will be removed in the next version. Please use `opentelemetry-0_24` instead.");
     #[cfg(feature = "prometheus")]
     println!("cargo:warning=The `prometheus` feature is deprecated and will be removed in the next version. Please use `prometheus-0_13` instead.");
     #[cfg(feature = "prometheus-client")]
     println!("cargo:warning=The `prometheus-client` feature is deprecated and will be removed in the next version. Please use `prometheus-client-0_22` instead.");
     #[cfg(feature = "exemplars-tracing-opentelemetry")]
-    println!("cargo:warning=The `exemplars-tracing-opentelemetry` feature is deprecated and will be removed in the next version. Please use `exemplars-tracing-opentelemetry-0_22` instead.");
+    println!("cargo:warning=The `exemplars-tracing-opentelemetry` feature is deprecated and will be removed in the next version. Please use `exemplars-tracing-opentelemetry-0_25` instead.");
 
     cfg_aliases! {
       // Backends
       metrics: { any(feature = "metrics", feature = "metrics-0_21") },
-      opentelemetry: { any(feature = "opentelemetry", feature = "opentelemetry-0_21") },
+      opentelemetry: { any(feature = "opentelemetry", feature = "opentelemetry-0_24") },
       prometheus: { any(feature = "prometheus", feature = "prometheus-0_13") },
       prometheus_client_feature: { any(feature = "prometheus-client", feature = "prometheus-client-0_22") },
       default_backend: { all(
@@ -32,7 +32,7 @@ pub fn main() {
       // Exemplars
       exemplars: { any(exemplars_tracing, exemplars_tracing_opentelemetry) },
       exemplars_tracing: { feature = "exemplars-tracing" },
-      exemplars_tracing_opentelemetry: { any(feature = "exemplars-tracing-opentelemetry-0_22", feature = "exemplars-tracing-opentelemetry") },
+      exemplars_tracing_opentelemetry: { any(feature = "exemplars-tracing-opentelemetry-0_25", feature = "exemplars-tracing-opentelemetry") },
 
       // Custom objectives
       custom_objective_percentile: { feature = "custom-objective-percentile" },

autometrics/src/README.md

@@ -153,7 +153,7 @@ If you require more customization than these offered feature flags, enable just
 
 > If you are exporting metrics yourself rather than using the `prometheus-exporter`, you must ensure that you are using the exact same version of the metrics library as `autometrics` (and it must come from `crates.io` rather than git or another source). If not, the autometrics metrics will not appear in your exported metrics.
 
-- `opentelemetry-0_21`  - use the [opentelemetry](https://crates.io/crates/opentelemetry) crate for producing metrics.
+- `opentelemetry-0_24`  - use the [opentelemetry](https://crates.io/crates/opentelemetry) crate for producing metrics.
 - `metrics-0_21` - use the [metrics](https://crates.io/crates/metrics) crate for producing metrics
 - `prometheus-0_13` - use the [prometheus](https://crates.io/crates/prometheus) crate for producing metrics
 - `prometheus-client-0_22` - use the official [prometheus-client](https://crates.io/crates/prometheus-client) crate for producing metrics
@@ -163,7 +163,7 @@ If you require more customization than these offered feature flags, enable just
 See the [exemplars module docs](https://docs.rs/autometrics/latest/autometrics/exemplars/index.html) for details about these features. Currently only supported with the `prometheus-client` backend.
 
 - `exemplars-tracing` - extract arbitrary fields from `tracing::Span`s
-- `exemplars-tracing-opentelemetry-0_20` or `exemplars-tracing-opentelemetry-0_21` - extract the `trace_id` and `span_id` from the `opentelemetry::Context`, which is attached to `tracing::Span`s by the `tracing-opentelemetry` crate
+- `exemplars-tracing-opentelemetry-0_25` - extract the `trace_id` and `span_id` from the `opentelemetry::Context`, which is attached to `tracing::Span`s by the `tracing-opentelemetry` crate
 
 ### Custom objective values
 

autometrics/src/exemplars/tracing_opentelemetry.rs

@@ -2,7 +2,7 @@ use super::TraceLabels;
 use opentelemetry::trace::TraceContextExt as _;
 use std::iter::FromIterator;
 use tracing::Span;
-use tracing_opentelemetry_0_22::OpenTelemetrySpanExt;
+use tracing_opentelemetry::OpenTelemetrySpanExt;
 
 pub fn get_exemplar() -> Option<TraceLabels> {
     // Get the OpenTelemetry Context from the tracing span

autometrics/src/lib.rs

@@ -9,7 +9,7 @@ mod constants;
 #[cfg(any(
     feature = "exemplars-tracing",
     feature = "exemplars-tracing-opentelemetry",
-    feature = "exemplars-tracing-opentelemetry-0_22",
+    feature = "exemplars-tracing-opentelemetry-0_25",
 ))]
 pub mod exemplars;
 mod labels;

autometrics/src/otel_push_exporter.rs

@@ -1,17 +1,17 @@
 use opentelemetry::metrics::MetricsError;
 use opentelemetry_otlp::{ExportConfig, Protocol, WithExportConfig};
 use opentelemetry_otlp::{OtlpMetricPipeline, OTEL_EXPORTER_OTLP_TIMEOUT_DEFAULT};
-use opentelemetry_sdk::metrics::MeterProvider;
+use opentelemetry_sdk::metrics::SdkMeterProvider;
 use std::ops::Deref;
 use std::time::Duration;
 
-/// Newtype struct holding a [`MeterProvider`] with a custom `Drop` implementation to automatically clean up itself
+/// Newtype struct holding a [`SdkMeterProvider`] with a custom `Drop` implementation to automatically clean up itself
 #[repr(transparent)]
 #[must_use = "Assign this to a unused variable instead: `let _meter = ...` (NOT `let _ = ...`), as else it will be dropped immediately - which will cause it to be shut down"]
-pub struct OtelMeterProvider(MeterProvider);
+pub struct OtelMeterProvider(SdkMeterProvider);
 
 impl Deref for OtelMeterProvider {
-    type Target = MeterProvider;
+    type Target = SdkMeterProvider;
 
     fn deref(&self) -> &Self::Target {
         &self.0

autometrics/src/prometheus_exporter.rs

@@ -29,6 +29,8 @@ use metrics_exporter_prometheus::{BuildError, PrometheusBuilder, PrometheusHandl
 use once_cell::sync::OnceCell;
 #[cfg(opentelemetry)]
 use opentelemetry::metrics::MetricsError;
+#[cfg(opentelemetry)]
+use opentelemetry_sdk::metrics::SdkMeterProvider;
 #[cfg(any(opentelemetry, prometheus))]
 use prometheus::TextEncoder;
 use thiserror::Error;
@@ -213,7 +215,7 @@ fn initialize_prometheus_exporter() -> Result<GlobalPrometheus, ExporterInitiali
         use opentelemetry::global;
         use opentelemetry_prometheus::exporter;
         use opentelemetry_sdk::metrics::reader::AggregationSelector;
-        use opentelemetry_sdk::metrics::{Aggregation, InstrumentKind, MeterProvider};
+        use opentelemetry_sdk::metrics::{Aggregation, InstrumentKind};
 
         /// A custom aggregation selector that uses the configured histogram buckets,
         /// along with the other default aggregation settings.
@@ -228,7 +230,9 @@ fn initialize_prometheus_exporter() -> Result<GlobalPrometheus, ExporterInitiali
                     | InstrumentKind::UpDownCounter
                     | InstrumentKind::ObservableCounter
                     | InstrumentKind::ObservableUpDownCounter => Aggregation::Sum,
-                    InstrumentKind::ObservableGauge => Aggregation::LastValue,
+                    InstrumentKind::ObservableGauge | InstrumentKind::Gauge => {
+                        Aggregation::LastValue
+                    }
                     InstrumentKind::Histogram => Aggregation::ExplicitBucketHistogram {
                         boundaries: self.histogram_buckets.clone(),
                         record_min_max: false,
@@ -246,7 +250,7 @@ fn initialize_prometheus_exporter() -> Result<GlobalPrometheus, ExporterInitiali
             .without_target_info()
             .build()?;
 
-        let meter_provider = MeterProvider::builder().with_reader(exporter).build();
+        let meter_provider = SdkMeterProvider::builder().with_reader(exporter).build();
 
         global::set_meter_provider(meter_provider);
     }

autometrics/src/settings.rs

@@ -195,7 +195,7 @@ impl AutometricsSettingsBuilder {
         let (prometheus_client_registry, prometheus_client_metrics) =
             crate::tracker::prometheus_client::initialize_registry(
                 self.prometheus_client_registry
-                    .unwrap_or_else(|| <prometheus_client::registry::Registry>::default()),
+                    .unwrap_or_else(<prometheus_client::registry::Registry>::default),
             );
 
         let repo_url = self

autometrics/src/tracker/opentelemetry.rs

@@ -3,7 +3,7 @@ use crate::__private::FunctionDescription;
 use crate::labels::{BuildInfoLabels, CounterLabels, GaugeLabels, HistogramLabels, Label};
 use crate::{constants::*, tracker::TrackMetrics};
 use once_cell::sync::Lazy;
-use opentelemetry::metrics::{Counter, Histogram, Unit, UpDownCounter};
+use opentelemetry::metrics::{Counter, Histogram, UpDownCounter};
 use opentelemetry::{global, KeyValue};
 use std::{sync::Once, time::Instant};
 
@@ -19,10 +19,9 @@ static HISTOGRAM: Lazy<Histogram<f64>> = Lazy::new(|| {
     // Note that the unit needs to be written as "s" rather than "seconds"
     // or it will not be included in the metric name
     // https://github.com/open-telemetry/opentelemetry-rust/issues/1173
-    let unit = Unit::new("s");
     global::meter(METER_NAME)
         .f64_histogram(HISTOGRAM_NAME)
-        .with_unit(unit)
+        .with_unit("s")
         .with_description(HISTOGRAM_DESCRIPTION)
         .init()
 });

autometrics/tests/exemplars_test.rs

@@ -70,8 +70,8 @@ fn tracing_opentelemetry_context() {
     let tracer = provider.tracer("test");
 
     // This adds the OpenTelemetry Context to every tracing Span
-    #[cfg(feature = "exemplars-tracing-opentelemetry-0_22")]
-    let otel_layer = tracing_opentelemetry_0_22::layer().with_tracer(tracer);
+    #[cfg(feature = "exemplars-tracing-opentelemetry-0_25")]
+    let otel_layer = tracing_opentelemetry::layer().with_tracer(tracer);
 
     let subscriber = Registry::default().with(otel_layer);
 

examples/exemplars-tracing-opentelemetry/Cargo.toml

@@ -8,14 +8,15 @@ edition = "2021"
 autometrics = { path = "../../autometrics", features = [
   "prometheus-client-0_22",
   "prometheus-exporter",
-  "exemplars-tracing-opentelemetry-0_22",
+  "exemplars-tracing-opentelemetry-0_25",
 ] }
 autometrics-example-util = { path = "../util" }
 axum = { version = "0.7.2", features = ["json"] }
-opentelemetry = "0.20"
-opentelemetry-stdout = { version = "0.1", features = ["trace"] }
+opentelemetry = "0.24"
+opentelemetry_sdk = "0.24"
+opentelemetry-stdout = { version = "0.5", features = ["trace"] }
 reqwest = { version = "0.11", features = ["json"] }
 tokio = { version = "1", features = ["full"] }
 tracing = "0.1"
-tracing-opentelemetry = "0.21"
+tracing-opentelemetry = "0.25"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }

examples/exemplars-tracing-opentelemetry/src/main.rs

@@ -1,8 +1,8 @@
 use autometrics::{autometrics, prometheus_exporter};
 use autometrics_example_util::run_prometheus;
-use axum::{routing::get, Router, ServiceExt};
-use opentelemetry::sdk::trace::TracerProvider;
+use axum::{routing::get, Router};
 use opentelemetry::trace::TracerProvider as _;
+use opentelemetry_sdk::trace::TracerProvider;
 use opentelemetry_stdout::SpanExporter;
 use std::error::Error;
 use std::net::Ipv4Addr;

examples/opentelemetry-push-custom/Cargo.toml

@@ -5,12 +5,12 @@ publish = false
 edition = "2021"
 
 [dependencies]
-autometrics = { path = "../../autometrics", features = ["opentelemetry-0_21"] }
+autometrics = { path = "../../autometrics", features = ["opentelemetry-0_24"] }
 autometrics-example-util = { path = "../util" }
 # Note that the version of the opentelemetry crate MUST match
 # the version used by autometrics
-opentelemetry = { version = "0.21", features = ["metrics"] }
-opentelemetry_sdk = { version = "0.21.1", features = ["metrics", "rt-tokio"] }
-opentelemetry-otlp = { version = "0.14", features = ["tonic", "metrics"] }
-opentelemetry-semantic-conventions = { version = "0.13" }
+opentelemetry = { version = "0.24", features = ["metrics"] }
+opentelemetry_sdk = { version = "0.24", features = ["metrics", "rt-tokio"] }
+opentelemetry-otlp = { version = "0.17", features = ["tonic", "metrics"] }
+opentelemetry-semantic-conventions = { version = "0.16.0" }
 tokio = { version = "1", features = ["full"] }

examples/opentelemetry-push/Cargo.toml

@@ -5,6 +5,6 @@ publish = false
 edition = "2021"
 
 [dependencies]
-autometrics = { path = "../../autometrics", features = ["opentelemetry-0_21", "otel-push-exporter-http", "otel-push-exporter-tokio"] }
+autometrics = { path = "../../autometrics", features = ["opentelemetry-0_24", "otel-push-exporter-http", "otel-push-exporter-tokio"] }
 autometrics-example-util = { path = "../util" }
 tokio = { version = "1", features = ["full"] }