feat(otel-telemetry): scaffold libdd-otel-telemetry crate

.github/CODEOWNERS

@@ -55,6 +55,7 @@ libdd-http-client                    @DataDog/apm-common-components-core
 libdd-agent-client                   @DataDog/apm-common-components-core
 libdd-library-config*/               @DataDog/apm-sdk-capabilities-rust
 libdd-log*/                          @DataDog/apm-common-components-core
+libdd-otel-telemetry/                @DataDog/apm-common-components-core
 libdd-otel-thread-ctx/               @DataDog/apm-common-components-core
 libdd-otel-thread-ctx-ffi/           @DataDog/apm-common-components-core
 libdd-profiling*/                    @DataDog/libdatadog-profiling

Cargo.toml

@@ -61,6 +61,7 @@ members = [
   "libdd-log",
   "libdd-log-ffi",
   "libdd-sampling",
+  "libdd-otel-telemetry",
 ]
 
 # https://doc.rust-lang.org/cargo/reference/resolver.html

LICENSE-3rdparty.csv

@@ -275,6 +275,11 @@ object,https://github.com/gimli-rs/object,Apache-2.0 OR MIT,The object Authors
 once_cell,https://github.com/matklad/once_cell,MIT OR Apache-2.0,Aleksey Kladov <aleksey.kladov@gmail.com>
 oorandom,https://hg.sr.ht/~icefox/oorandom,MIT,Simon Heath <icefox@dreamquest.io>
 openssl-probe,https://github.com/alexcrichton/openssl-probe,MIT OR Apache-2.0,Alex Crichton <alex@alexcrichton.com>
+opentelemetry,https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry,Apache-2.0,The opentelemetry Authors
+opentelemetry-http,https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry-http,Apache-2.0,The opentelemetry-http Authors
+opentelemetry-otlp,https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry-otlp,Apache-2.0,The opentelemetry-otlp Authors
+opentelemetry-proto,https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry-proto,Apache-2.0,The opentelemetry-proto Authors
+opentelemetry_sdk,https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry-sdk,Apache-2.0,The opentelemetry_sdk Authors
 os_info,https://github.com/stanislav-tkach/os_info,MIT,"Jan Schulte <hello@unexpected-co.de>, Stanislav Tkach <stanislav.tkach@gmail.com>"
 page_size,https://github.com/Elzair/page_size_rs,MIT OR Apache-2.0,Philip Woods <elzairthesorcerer@gmail.com>
 parking,https://github.com/smol-rs/parking,Apache-2.0 OR MIT,"Stjepan Glavina <stjepang@gmail.com>, The Rust Project Developers"
@@ -453,6 +458,7 @@ toml_edit,https://github.com/toml-rs/toml,MIT OR Apache-2.0,"Andronik Ordian <wr
 toml_write,https://github.com/toml-rs/toml,MIT OR Apache-2.0,The toml_write Authors
 tonic,https://github.com/hyperium/tonic,MIT,Lucio Franco <luciofranco14@gmail.com>
 tonic-prost,https://github.com/hyperium/tonic,MIT,Lucio Franco <luciofranco14@gmail.com>
+tonic-types,https://github.com/hyperium/tonic,MIT,"Lucio Franco <luciofranco14@gmail.com>, Rafael Lemos <flemos.rafael.dev@gmail.com>"
 tower,https://github.com/tower-rs/tower,MIT,Tower Maintainers <team@tower-rs.com>
 tower-http,https://github.com/tower-rs/tower-http,MIT,Tower Maintainers <team@tower-rs.com>
 tower-layer,https://github.com/tower-rs/tower,MIT,Tower Maintainers <team@tower-rs.com>

libdd-otel-telemetry/Cargo.toml

@@ -0,0 +1,35 @@
+# Copyright 2026-Present Datadog, Inc. https://www.datadoghq.com/
+# SPDX-License-Identifier: Apache-2.0
+
+[package]
+name = "libdd-otel-telemetry"
+version = "0.1.0"
+description = "Shared OpenTelemetry metrics/logs aggregation and OTLP export for Datadog tracers."
+homepage = "https://github.com/DataDog/libdatadog/tree/main/libdd-otel-telemetry"
+repository = "https://github.com/DataDog/libdatadog/tree/main/libdd-otel-telemetry"
+rust-version.workspace = true
+edition.workspace = true
+license.workspace = true
+autobenches = false
+
+[dependencies]
+opentelemetry = "0.32"
+opentelemetry_sdk = { version = "0.32", features = ["metrics"] }
+opentelemetry-otlp = { version = "0.32", default-features = false, features = [
+    "metrics",
+] }
+tracing.workspace = true
+libdd-shared-runtime = { version = "2.0.0", path = "../libdd-shared-runtime", default-features = false }
+# Only needed for the `http` exporter: reqwest+rustls needs a process-default crypto provider
+# installed. libdatadog standardizes on ring (aws-lc-rs is FIPS-only), so pin the ring provider.
+rustls = { version = "0.23", default-features = false, features = ["ring"], optional = true }
+
+[features]
+default = ["grpc"]
+grpc = ["opentelemetry-otlp/grpc-tonic"]
+http = ["opentelemetry-otlp/http-proto", "opentelemetry-otlp/reqwest-client", "dep:rustls"]
+test-utils = []
+
+[dev-dependencies]
+libdd-shared-runtime = { version = "2.0.0", path = "../libdd-shared-runtime" }
+tokio = { version = "1.23", features = ["rt-multi-thread", "macros"] }