Add support for `opentelemetry` version `0.21` (#112)

* Add support for `opentelemetry` version `0.21`

* Fix tracer provider import

.github/workflows/ci.yml

@@ -20,6 +20,7 @@ jobs:
           - opentelemetry_0_18
           - opentelemetry_0_19
           - opentelemetry_0_20
+          - opentelemetry_0_21
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -67,6 +68,7 @@ jobs:
           - opentelemetry_0_18
           - opentelemetry_0_19
           - opentelemetry_0_20
+          - opentelemetry_0_21
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -97,6 +99,7 @@ jobs:
           - opentelemetry_0_18
           - opentelemetry_0_19
           - opentelemetry_0_20
+          - opentelemetry_0_21
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2

reqwest-tracing/Cargo.toml

@@ -18,6 +18,7 @@ opentelemetry_0_17 = ["opentelemetry_0_17_pkg", "tracing-opentelemetry_0_17_pkg"
 opentelemetry_0_18 = ["opentelemetry_0_18_pkg", "tracing-opentelemetry_0_18_pkg"]
 opentelemetry_0_19 = ["opentelemetry_0_19_pkg", "tracing-opentelemetry_0_19_pkg"]
 opentelemetry_0_20 = ["opentelemetry_0_20_pkg", "tracing-opentelemetry_0_20_pkg"]
+opentelemetry_0_21 = ["opentelemetry_0_21_pkg", "tracing-opentelemetry_0_22_pkg"]
 
 
 [dependencies]
@@ -38,6 +39,7 @@ opentelemetry_0_17_pkg = { package = "opentelemetry", version = "0.17.0", option
 opentelemetry_0_18_pkg = { package = "opentelemetry", version = "0.18.0", optional = true }
 opentelemetry_0_19_pkg = { package = "opentelemetry", version = "0.19.0", optional = true }
 opentelemetry_0_20_pkg = { package = "opentelemetry", version = "0.20.0", optional = true }
+opentelemetry_0_21_pkg = { package = "opentelemetry", version = "0.21.0", optional = true }
 tracing-opentelemetry_0_12_pkg = { package = "tracing-opentelemetry", version = "0.12.0", optional = true }
 tracing-opentelemetry_0_13_pkg = { package = "tracing-opentelemetry", version = "0.13.0", optional = true }
 tracing-opentelemetry_0_14_pkg = { package = "tracing-opentelemetry", version = "0.14.0", optional = true }
@@ -46,6 +48,7 @@ tracing-opentelemetry_0_17_pkg = { package = "tracing-opentelemetry", version =
 tracing-opentelemetry_0_18_pkg = { package = "tracing-opentelemetry", version = "0.18.0", optional = true }
 tracing-opentelemetry_0_19_pkg = { package = "tracing-opentelemetry", version = "0.19.0", optional = true }
 tracing-opentelemetry_0_20_pkg = { package = "tracing-opentelemetry", version = "0.20.0", optional = true }
+tracing-opentelemetry_0_22_pkg = { package = "tracing-opentelemetry", version = "0.22.0", optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 getrandom = { version = "0.2.0", features = ["js"] }
@@ -56,4 +59,6 @@ tracing_subscriber_0_2 = { package = "tracing-subscriber", version = "0.2.0" }
 tracing_subscriber_0_3 = { package = "tracing-subscriber", version = "0.3.0" }
 wiremock = "0.5.0"
 
-opentelemetry-stdout = { version = "0.1.0", features = ["trace"] }
+opentelemetry_sdk_0_21 = { package = "opentelemetry_sdk", version = "0.21.0", features = ["trace"] }
+opentelemetry_stdout_0_1 = { package = "opentelemetry-stdout", version = "0.1.0", features = ["trace"] }
+opentelemetry_stdout_0_2 = { package = "opentelemetry-stdout", version = "0.2.0", features = ["trace"] }

reqwest-tracing/README.md

@@ -92,8 +92,9 @@ an opentelemetry version feature:
 reqwest-tracing = { version = "0.3.1", features = ["opentelemetry_0_18"] }
 ```
 
-Available opentelemetry features are `opentelemetry_0_20`, `opentelemetry_0_19`, `opentelemetry_0_18`, `opentelemetry_0_17`, `opentelemetry_0_16`, `opentelemetry_0_15`, `opentelemetry_0_14` and
+Available opentelemetry features are `opentelemetry_0_21`, `opentelemetry_0_20`,
-`opentelemetry_0_13`.
+`opentelemetry_0_19`, `opentelemetry_0_18`, `opentelemetry_0_17`, `opentelemetry_0_16`,
+`opentelemetry_0_15`, `opentelemetry_0_14` and `opentelemetry_0_13`.
 
 #### License
 

reqwest-tracing/src/lib.rs

@@ -92,6 +92,7 @@ mod middleware;
     feature = "opentelemetry_0_18",
     feature = "opentelemetry_0_19",
     feature = "opentelemetry_0_20",
+    feature = "opentelemetry_0_21",
 ))]
 mod otel;
 mod reqwest_otel_span_builder;

reqwest-tracing/src/middleware.rs

@@ -54,6 +54,7 @@ where
                 feature = "opentelemetry_0_18",
                 feature = "opentelemetry_0_19",
                 feature = "opentelemetry_0_20",
+                feature = "opentelemetry_0_21",
             ))]
             let req = if !extensions.contains::<crate::DisableOtelPropagation>() {
                 // Adds tracing headers to the given request to propagate the OpenTelemetry context to downstream revivers of the request.

reqwest-tracing/src/otel.rs

@@ -27,6 +27,9 @@ use opentelemetry_0_19_pkg as opentelemetry;
 #[cfg(feature = "opentelemetry_0_20")]
 use opentelemetry_0_20_pkg as opentelemetry;
 
+#[cfg(feature = "opentelemetry_0_21")]
+use opentelemetry_0_21_pkg as opentelemetry;
+
 #[cfg(feature = "opentelemetry_0_13")]
 pub use tracing_opentelemetry_0_12_pkg as tracing_opentelemetry;
 
@@ -51,6 +54,9 @@ pub use tracing_opentelemetry_0_19_pkg as tracing_opentelemetry;
 #[cfg(feature = "opentelemetry_0_20")]
 pub use tracing_opentelemetry_0_20_pkg as tracing_opentelemetry;
 
+#[cfg(feature = "opentelemetry_0_21")]
+pub use tracing_opentelemetry_0_22_pkg as tracing_opentelemetry;
+
 use opentelemetry::global;
 use opentelemetry::propagation::Injector;
 use tracing_opentelemetry::OpenTelemetrySpanExt;
@@ -96,7 +102,10 @@ mod test {
 
     use super::*;
     use crate::{DisableOtelPropagation, TracingMiddleware};
+    #[cfg(not(feature = "opentelemetry_0_21"))]
     use opentelemetry::sdk::propagation::TraceContextPropagator;
+    #[cfg(feature = "opentelemetry_0_21")]
+    use opentelemetry_sdk_0_21::propagation::TraceContextPropagator;
     use reqwest::Response;
     use reqwest_middleware::{ClientBuilder, ClientWithMiddleware, Extension};
     use tracing::{info_span, Instrument, Level};
@@ -118,19 +127,33 @@ mod test {
         static TELEMETRY: OnceLock<()> = OnceLock::new();
 
         TELEMETRY.get_or_init(|| {
-            #[cfg(not(feature = "opentelemetry_0_20"))]
+            #[cfg(all(
+                not(feature = "opentelemetry_0_20"),
+                not(feature = "opentelemetry_0_21")
+            ))]
             let tracer = opentelemetry::sdk::export::trace::stdout::new_pipeline()
                 .with_writer(std::io::sink())
                 .install_simple();
-            #[cfg(feature = "opentelemetry_0_20")]
+            #[cfg(any(feature = "opentelemetry_0_20", feature = "opentelemetry_0_21"))]
             let tracer = {
                 use opentelemetry::trace::TracerProvider;
-                let exporter = opentelemetry_stdout::SpanExporterBuilder::default()
+                #[cfg(feature = "opentelemetry_0_20")]
+                use opentelemetry_stdout_0_1::SpanExporterBuilder;
+                #[cfg(feature = "opentelemetry_0_21")]
+                use opentelemetry_stdout_0_2::SpanExporterBuilder;
+
+                let exporter = SpanExporterBuilder::default()
                     .with_writer(std::io::sink())
                     .build();
+
+                #[cfg(feature = "opentelemetry_0_20")]
                 let provider = opentelemetry::sdk::trace::TracerProvider::builder()
                     .with_simple_exporter(exporter)
                     .build();
+                #[cfg(feature = "opentelemetry_0_21")]
+                let provider = opentelemetry_sdk_0_21::trace::TracerProvider::builder()
+                    .with_simple_exporter(exporter)
+                    .build();
                 let tracer = provider.versioned_tracer("reqwest", None::<&str>, None::<&str>, None);
                 let _ = global::set_tracer_provider(provider);
                 tracer