Move profiling ffi crate back out of profiling

Due to a [rust bug][1], LTO was not being applied, and we need the lib
crate type in order to run tests and clippy lints. For now, keep these
as separate crates.

  [1]: rust-lang/rust#51009

Cargo.toml

@@ -4,6 +4,7 @@
 [workspace]
 members = [
     "profiling",
+    "profiling-ffi",
     "ddcommon",
     "ddcommon-ffi",
     "ddtelemetry",

LICENSE-3rdparty.yml

@@ -1,5 +1,5 @@
 ---
-root_name: "datadog-profiling, ddcommon, ddcommon-ffi, ddtelemetry"
+root_name: "datadog-profiling, ddcommon, datadog-profiling-ffi, ddcommon-ffi, ddtelemetry"
 third_party_libraries:
   - package_name: aho-corasick
     package_version: 0.7.18

build-profiling-ffi.sh

@@ -63,7 +63,7 @@ case "$target" in
 esac
 
 echo "Recognized platform '${target}'. Adding libs: ${native_static_libs}"
-cd profiling
+cd profiling-ffi
 sed < datadog_profiling.pc.in "s/@Datadog_VERSION@/${version}/g" \
     > "$destdir/lib/pkgconfig/datadog_profiling.pc"
 
@@ -86,12 +86,21 @@ cp -v LICENSE LICENSE-3rdparty.yml NOTICE "$destdir/"
 
 export RUSTFLAGS="${RUSTFLAGS:- -C relocation-model=pic}"
 
-echo "Building the datadog profiling library (may take some time)..."
-cargo build --package=datadog-profiling --features=datadog_profiling_ffi --release --target "${target}"
+datadog_profiling_ffi="datadog-profiling-ffi"
+echo "Building the ${datadog_profiling_ffi} crate (may take some time)..."
+cargo build --package="${datadog_profiling_ffi}" --release --target "${target}"
 
-shared_library_name="${library_prefix}datadog_profiling${shared_library_suffix}"
-static_library_name="${library_prefix}datadog_profiling${static_library_suffix}"
-cp -v "target/${target}/release/$static_library_name" "target/${target}/release/$shared_library_name" "$destdir/lib/"
+# Remove _ffi suffix when copying
+shared_library_name="${library_prefix}datadog_profiling_ffi${shared_library_suffix}"
+static_library_name="${library_prefix}datadog_profiling_ffi${static_library_suffix}"
+shared_library_rename="${library_prefix}datadog_profiling${shared_library_suffix}"
+static_library_rename="${library_prefix}datadog_profiling${static_library_suffix}"
+
+cp -v "target/${target}/release/${shared_library_name}" "$destdir/lib/${shared_library_rename}"
+cp -v "target/${target}/release/${static_library_rename}" "$destdir/lib/${static_library_rename}"
+
+shared_library_name="${shared_library_rename}"
+static_library_name="${static_library_rename}"
 
 if [[ "$remove_rpath" -eq 1 ]]; then
     patchelf --remove-rpath "$destdir/lib/${shared_library_name}"
@@ -114,8 +123,8 @@ if command -v objcopy > /dev/null && [[ "$target" != "x86_64-pc-windows-msvc" ]]
 fi
 
 echo "Checking that native-static-libs are as expected for this platform..."
-cd profiling
-actual_native_static_libs="$(cargo rustc --features=datadog_profiling_ffi --release --target "${target}" -- --print=native-static-libs 2>&1 | awk -F ':' '/note: native-static-libs:/ { print $3 }')"
+cd profiling-ffi
+actual_native_static_libs="$(cargo rustc --release --target "${target}" -- --print=native-static-libs 2>&1 | awk -F ':' '/note: native-static-libs:/ { print $3 }')"
 echo "Actual native-static-libs:${actual_native_static_libs}"
 echo "Expected native-static-libs:${expected_native_static_libs}"
 
@@ -140,8 +149,12 @@ echo "Building tools"
 cargo build --package tools --bins
 
 echo "Generating $destdir/include/libdatadog headers..."
-cbindgen --crate ddcommon-ffi --config ddcommon-ffi/cbindgen.toml --output "$destdir/include/datadog/common.h"
-cbindgen --crate datadog-profiling --config profiling/cbindgen.toml --output "$destdir/include/datadog/profiling.h"
+cbindgen --crate ddcommon-ffi \
+    --config ddcommon-ffi/cbindgen.toml \
+    --output "$destdir/include/datadog/common.h"
+cbindgen --crate "${datadog_profiling_ffi}" \
+    --config profiling-ffi/cbindgen.toml \
+    --output "$destdir/include/datadog/profiling.h"
 ./target/debug/dedup_headers "$destdir/include/datadog/common.h" "$destdir/include/datadog/profiling.h"
 
 echo "Done."

cmake/DatadogConfig.cmake.in

@@ -42,7 +42,8 @@ if(Datadog_FOUND)
                 wsock32
                 ws2_32
                 shlwapi
-                Secur32)
+                Secur32
+                Ncrypt)
   endif()
 
   add_library(Datadog::Profiling ALIAS datadog_profiling)

profiling-ffi/Cargo.toml

@@ -0,0 +1,23 @@
+# Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
+# This product includes software developed at Datadog (https://www.datadoghq.com/). Copyright 2021-Present Datadog, Inc.
+
+[package]
+name = "datadog-profiling-ffi"
+version = "0.8.0-alpha.1"
+edition = "2021"
+license = "Apache-2.0"
+
+[lib]
+# LTO is ignored if "lib" is added as crate type
+# cf. https://github.com/rust-lang/rust/issues/51009
+crate-type = ["staticlib", "cdylib"]
+
+[dependencies]
+anyhow = "1.0"
+chrono = "0.4"
+datadog-profiling = { path = "../profiling"}
+hyper = {version = "0.14", default-features = false}
+ddcommon = { path = "../ddcommon"}
+ddcommon-ffi = { path = "../ddcommon-ffi"}
+libc = "0.2"
+tokio-util = "0.7.1"

profiling-ffi/NOTICE

@@ -0,0 +1 @@
+../NOTICE

profiling/cbindgen.toml → profiling-ffi/cbindgen.toml

@@ -13,9 +13,6 @@ no_includes = true
 sys_includes = ["stdbool.h", "stddef.h", "stdint.h"]
 includes = ["datadog/common.h"]
 
-[defines]
-"feature = datadog_profiling_ffi" = "DATADOG_PROFILING_FFI"
-
 [export]
 prefix = "ddog_"
 
@@ -31,4 +28,4 @@ must_use = "DDOG_CHECK_RETURN"
 
 [parse]
 parse_deps = true
-include = ["ddcommon", "ddcommon-ffi", "ux"]
+include = ["ddcommon", "ddcommon-ffi", "datadog-profiling", "ux"]

profiling/src/ffi/exporter.rs → profiling-ffi/src/exporter.rs

@@ -4,11 +4,11 @@
 #![allow(renamed_and_removed_lints)]
 #![allow(clippy::box_vec)]
 
-use super::Timespec;
-use crate::exporter;
-use crate::exporter::ProfileExporter;
+use crate::Timespec;
+use datadog_profiling::exporter;
 use ddcommon::tag::Tag;
 use ddcommon_ffi::slice::{AsBytes, ByteSlice, CharSlice, Slice};
+use exporter::ProfileExporter;
 use std::borrow::Cow;
 use std::ptr::NonNull;
 use std::str::FromStr;
@@ -304,12 +304,12 @@ pub extern "C" fn ddog_CancellationToken_drop(_cancel: Option<Box<CancellationTo
 
 #[export_name = "ddog_SendResult_drop"]
 pub unsafe extern "C" fn send_result_drop(result: SendResult) {
-    drop(result)
+    std::mem::drop(result)
 }
 
 #[cfg(test)]
 mod test {
-    use super::*;
+    use crate::exporter::*;
     use ddcommon_ffi::Slice;
 
     fn family() -> CharSlice<'static> {
@@ -336,7 +336,8 @@ mod test {
             NewProfileExporterResult::Ok(exporter) => unsafe {
                 profile_exporter_delete(Some(Box::from_raw(exporter)))
             },
-            NewProfileExporterResult::Err(_) => {
+            NewProfileExporterResult::Err(message) => {
+                std::mem::drop(message);
                 panic!("Should not occur!")
             }
         }
@@ -350,7 +351,8 @@ mod test {
             NewProfileExporterResult::Ok(exporter) => unsafe {
                 Some(NonNull::new_unchecked(exporter))
             },
-            NewProfileExporterResult::Err(_) => {
+            NewProfileExporterResult::Err(message) => {
+                std::mem::drop(message);
                 panic!("Should not occur!")
             }
         };

profiling/src/ffi/profiles.rs → profiling-ffi/src/profiles.rs

@@ -1,8 +1,8 @@
 // Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
 // This product includes software developed at Datadog (https://www.datadoghq.com/). Copyright 2021-Present Datadog, Inc.
 
-use super::Timespec;
-use crate::profile as profiles;
+use crate::Timespec;
+use datadog_profiling::profile as profiles;
 use ddcommon_ffi::slice::{AsBytes, CharSlice, Slice};
 use std::convert::{TryFrom, TryInto};
 use std::str::Utf8Error;
@@ -303,11 +303,11 @@ pub unsafe extern "C" fn ddog_Profile_new(
     sample_types: Slice<ValueType>,
     period: Option<&Period>,
     start_time: Option<&Timespec>,
-) -> Box<crate::profile::Profile> {
-    let types: Vec<crate::profile::api::ValueType> =
+) -> Box<datadog_profiling::profile::Profile> {
+    let types: Vec<datadog_profiling::profile::api::ValueType> =
         sample_types.into_slice().iter().map(Into::into).collect();
 
-    let builder = crate::profile::Profile::builder()
+    let builder = datadog_profiling::profile::Profile::builder()
         .period(period.map(Into::into))
         .sample_types(types)
         .start_time(start_time.map(SystemTime::from));
@@ -319,15 +319,18 @@ pub unsafe extern "C" fn ddog_Profile_new(
 /// # Safety
 /// The `profile` must point to an object created by another FFI routine in this
 /// module, such as `ddog_Profile_with_sample_types`.
-pub unsafe extern "C" fn ddog_Profile_free(_profile: Box<crate::profile::Profile>) {}
+pub unsafe extern "C" fn ddog_Profile_free(_profile: Box<datadog_profiling::profile::Profile>) {}
 
 #[no_mangle]
 /// # Safety
 /// The `profile` ptr must point to a valid Profile object created by this
 /// module. All pointers inside the `sample` need to be valid for the duration
 /// of this call.
 /// This call is _NOT_ thread-safe.
-pub extern "C" fn ddog_Profile_add(profile: &mut crate::profile::Profile, sample: Sample) -> u64 {
+pub extern "C" fn ddog_Profile_add(
+    profile: &mut datadog_profiling::profile::Profile,
+    sample: Sample,
+) -> u64 {
     match sample.try_into().map(|s| profile.add(s)) {
         Ok(r) => match r {
             Ok(id) => id.into(),
@@ -355,7 +358,7 @@ pub extern "C" fn ddog_Profile_add(profile: &mut crate::profile::Profile, sample
 /// This call is _NOT_ thread-safe.
 #[no_mangle]
 pub unsafe extern "C" fn ddog_Profile_set_endpoint<'a>(
-    profile: &mut crate::profile::Profile,
+    profile: &mut datadog_profiling::profile::Profile,
     local_root_span_id: CharSlice<'a>,
     endpoint: CharSlice<'a>,
 ) {
@@ -372,8 +375,8 @@ pub struct EncodedProfile {
     buffer: ddcommon_ffi::Vec<u8>,
 }
 
-impl From<crate::profile::EncodedProfile> for EncodedProfile {
-    fn from(value: crate::profile::EncodedProfile) -> Self {
+impl From<datadog_profiling::profile::EncodedProfile> for EncodedProfile {
+    fn from(value: datadog_profiling::profile::EncodedProfile) -> Self {
         let start = value.start.into();
         let end = value.end.into();
         let buffer = value.buffer.into();
@@ -406,7 +409,7 @@ pub enum SerializeResult {
 /// The `duration_nanos` must be null or otherwise point to a valid i64.
 #[no_mangle]
 pub unsafe extern "C" fn ddog_Profile_serialize(
-    profile: &crate::profile::Profile,
+    profile: &datadog_profiling::profile::Profile,
     end_time: Option<&Timespec>,
     duration_nanos: Option<&i64>,
 ) -> SerializeResult {
@@ -416,7 +419,7 @@ pub unsafe extern "C" fn ddog_Profile_serialize(
         Some(x) if *x < 0 => None,
         Some(x) => Some(Duration::from_nanos((*x) as u64)),
     };
-    match || -> anyhow::Result<crate::profile::EncodedProfile> {
+    match || -> anyhow::Result<datadog_profiling::profile::EncodedProfile> {
         Ok(profile.serialize(end_time, duration)?)
     }() {
         Ok(ok) => SerializeResult::Ok(ok.into()),
@@ -447,15 +450,15 @@ pub unsafe extern "C" fn ddog_Vec_u8_as_slice(vec: &ddcommon_ffi::Vec<u8>) -> Sl
 /// If `time` is not null, it must point to a valid Timespec object.
 #[no_mangle]
 pub unsafe extern "C" fn ddog_Profile_reset(
-    profile: &mut crate::profile::Profile,
+    profile: &mut datadog_profiling::profile::Profile,
     start_time: Option<&Timespec>,
 ) -> bool {
     profile.reset(start_time.map(SystemTime::from)).is_some()
 }
 
 #[cfg(test)]
 mod test {
-    use super::*;
+    use crate::profiles::*;
     use ddcommon_ffi::Slice;
 
     #[test]
@@ -518,7 +521,7 @@ mod test {
         }
     }
 
-    unsafe fn provide_distinct_locations_ffi() -> crate::profile::Profile {
+    unsafe fn provide_distinct_locations_ffi() -> datadog_profiling::profile::Profile {
         let sample_type: *const ValueType = &ValueType::new("samples", "count");
         let mut profile = ddog_Profile_new(Slice::new(sample_type, 1), None, None);
 

profiling/Cargo.toml

@@ -9,13 +9,7 @@ build = "build.rs"
 license = "Apache-2.0"
 
 [lib]
-# LTO is ignored if "lib" is added as crate type
-# cf. https://github.com/rust-lang/rust/issues/51009
-crate-type = ["cdylib", "staticlib", "lib"]
-
-[features]
-default = []
-datadog_profiling_ffi = ["dep:ddcommon-ffi"]
+crate-type = ["lib"]
 
 [build-dependencies]
 prost-build = "0.10"
@@ -25,7 +19,6 @@ anyhow = "1.0"
 bytes = "1.1"
 chrono = "0.4"
 ddcommon = {path = "../ddcommon"}
-ddcommon-ffi = { path = "../ddcommon-ffi", optional = true }
 futures = "0.3"
 futures-core = {version = "0.3.0", default-features = false}
 futures-util = {version = "0.3.0", default-features = false}

profiling/src/lib.rs

@@ -3,6 +3,3 @@
 
 pub mod exporter;
 pub mod profile;
-
-#[cfg(feature = "datadog_profiling_ffi")]
-pub mod ffi;