Merge branch 'main' into taegyunkim/profiles-dictionary-memory-footprint

Author: taegyunkim

.codecov.yml

@@ -11,6 +11,10 @@ component_management:
       name: libdd-crashtracker-ffi  # this is a display name, and can be changed freely
       paths:
         - libdd-crashtracker-ffi
+    - component_id: agent-client  # this is an identifier that should not be changed
+      name: libdd-agent-client  # this is a display name, and can be changed freely
+      paths:
+        - libdd-agent-client
     - component_id: datadog-alloc  # this is an identifier that should not be changed
       name: libdd-alloc  # this is a display name, and can be changed freely
       paths:

.github/CODEOWNERS

@@ -51,6 +51,7 @@ libdd-data-pipeline*/                @DataDog/libdatadog-apm
 libdd-ddsketch*/                     @DataDog/libdatadog-apm @DataDog/apm-common-components-core
 libdd-dogstatsd-client               @DataDog/apm-common-components-core
 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-thread-ctx/               @DataDog/apm-common-components-core
@@ -103,3 +104,5 @@ tools/sidecar_mockgen/               @DataDog/libdatadog-php
 libdd-data-pipeline/src/otlp/                           @DataDog/apm-sdk-capabilities-rust
 libdd-data-pipeline/tests/test_trace_exporter_otlp_export.rs @DataDog/apm-sdk-capabilities-rust
 libdd-trace-utils/src/otlp_encoder/                     @DataDog/apm-sdk-capabilities-rust
+datadog-sidecar/src/service/ffe_exposures_flusher.rs    @DataDog/libdatadog-php @DataDog/libdatadog-apm @DataDog/feature-flagging-and-experimentation-sdk
+datadog-sidecar/src/service/ffe_metrics_flusher.rs      @DataDog/libdatadog-php @DataDog/libdatadog-apm @DataDog/feature-flagging-and-experimentation-sdk

.github/workflows/release-proposal-test.yml

@@ -65,7 +65,10 @@ jobs:
             echo "Skipping cargo package: no crates had a version bump vs the base ref (PKG_ARGS is empty)."
             exit 0
           fi
-          cargo package "${PKG_ARGS[@]}" --all-features
+          # cargo 1.92+ required: earlier versions (incl. the workspace MSRV 1.87) fail to
+          # resolve sibling crates by version requirement when those versions are not yet on
+          # crates.io
+          cargo +1.92.0 package "${PKG_ARGS[@]}" --all-features
           echo "upload_artifact=true" >> "$GITHUB_OUTPUT"
 
       - name: Upload crates

AGENTS.md

@@ -56,6 +56,9 @@ Iterate fastest with `cargo check -p <crate>` while editing; the full validation
   ```
 - **test_spawn_from_lib**: `cargo nextest run --package test_spawn_from_lib --features prefer-dynamic`.
 
+### Code exploration
+
+When searching for code with `grep` or `find`, always exclude the `./target` directory. Only search in it if specifically looking for build artifacts
 
 ## Key Conventions
 

Cargo.lock

@@ -53,6 +53,7 @@ members = [
   "libdd-tinybytes",
   "libdd-dogstatsd-client",
   "libdd-http-client",
+  "libdd-agent-client",
   "libdd-log",
   "libdd-log-ffi",
   "libdd-sampling",
@@ -74,7 +75,7 @@ resolver = "2"
 [workspace.package]
 rust-version = "1.87.0"
 edition = "2021"
-version = "34.0.0"
+version = "35.0.0"
 license = "Apache-2.0"
 authors = ["Datadog Inc. <info@datadoghq.com>"]
 

Cargo.toml

@@ -52,6 +52,10 @@ bench = false
 name = "crashing_test_app"
 bench = false
 
+[[bin]]
+name = "crashtracker_unix_socket_receiver"
+bench = false
+
 [[bin]]
 name = "prebuild"
 path = "src/bin/prebuild.rs"

bin_tests/Cargo.toml

@@ -39,6 +39,16 @@ pub fn crashing_app(profile: BuildProfile, panic_abort: bool) -> ArtifactsBuild
     }
 }
 
+/// Creates an ArtifactsBuild for the Unix socket receiver binary (sidecar-style).
+pub fn crashtracker_unix_socket_receiver(profile: BuildProfile) -> ArtifactsBuild {
+    ArtifactsBuild {
+        name: "crashtracker_unix_socket_receiver".to_owned(),
+        build_profile: profile,
+        artifact_type: ArtifactType::Bin,
+        ..Default::default()
+    }
+}
+
 /// Creates an ArtifactsBuild for the test_the_tests binary.
 pub fn test_the_tests(profile: BuildProfile) -> ArtifactsBuild {
     ArtifactsBuild {
@@ -87,6 +97,7 @@ pub fn all_prebuild_artifacts() -> Vec<ArtifactsBuild> {
     for profile in [BuildProfile::Debug, BuildProfile::Release] {
         artifacts.push(crashtracker_bin_test(profile, false));
         artifacts.push(crashtracker_receiver(profile));
+        artifacts.push(crashtracker_unix_socket_receiver(profile));
         artifacts.push(test_the_tests(profile));
         artifacts.push(profiling_ffi(profile));
         artifacts.push(crashing_app(profile, false));

bin_tests/src/artifacts.rs

@@ -0,0 +1,16 @@
+// Copyright 2026-Present Datadog, Inc. https://www.datadoghq.com/
+// SPDX-License-Identifier: Apache-2.0
+
+//! Sidecar-style crashtracker receiver that listens on a Unix socket.
+//! Used by integration tests to verify the socket-based receiver path
+
+#[cfg(not(unix))]
+fn main() {}
+
+#[cfg(unix)]
+fn main() -> anyhow::Result<()> {
+    let socket_path = std::env::args()
+        .nth(1)
+        .expect("usage: crashtracker_unix_socket_receiver <socket_path>");
+    libdd_crashtracker::receiver_entry_point_unix_socket(&socket_path)
+}

bin_tests/src/bin/crashtracker_unix_socket_receiver.rs

@@ -140,6 +140,10 @@ pub fn get_behavior(mode_str: &str) -> Box<dyn Behavior> {
         "errno_preservation" => Box::new(test_016_errno_preservation::Test),
         "multi_thread_collection" => Box::new(test_017_multi_thread_collection::Test),
         "thread_limit" => Box::new(test_018_thread_limit::Test),
+        "sidecar_donothing" => Box::new(test_019_sidecar_donothing::Test),
+        "sidecar_multi_thread_collection" => {
+            Box::new(test_020_sidecar_multi_thread_collection::Test)
+        }
         "runtime_preload_logger" => Box::new(test_000_donothing::Test),
         _ => panic!("Unknown mode: {mode_str}"),
     }