fix: include http client when otel enabled

Author: chris-olszewski

crates/common/Cargo.toml

@@ -15,7 +15,7 @@ exclude = ["protos/*/.github/*"]
 
 [features]
 history_builders = ["rand"]
-otel = ["dep:opentelemetry", "dep:opentelemetry_sdk", "dep:opentelemetry-otlp"]
+otel = ["dep:opentelemetry", "dep:opentelemetry_sdk", "dep:opentelemetry-otlp", "dep:reqwest"]
 prometheus = [
   "dep:prometheus",
   "dep:hyper",
@@ -74,6 +74,7 @@ prost = { workspace = true }
 prost-wkt = "0.7"
 prost-types = { workspace = true }
 rand = { version = "0.10", optional = true }
+reqwest = { version = "0.12", default-features = false, features = ["rustls-tls"], optional = true }
 ringbuf = { version = "0.4", optional = true }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { workspace = true }

crates/common/src/telemetry/otel.rs

@@ -136,6 +136,7 @@ pub fn build_otlp_metric_exporter(
         }
         OtlpProtocol::Http => opentelemetry_otlp::MetricExporter::builder()
             .with_http()
+            .with_http_client(reqwest::Client::new())
             .with_endpoint(opts.url.to_string())
             .with_headers(opts.headers)
             .with_temporality(metric_temporality_to_temporality(opts.metric_temporality))