dynamic_modules: switch to crate_universe to remove manual bindgen

WORKSPACE

@@ -27,3 +27,7 @@ envoy_python_dependencies()
 load("//bazel:dependency_imports.bzl", "envoy_dependency_imports")
 
 envoy_dependency_imports()
+
+load("//bazel:dependency_imports_extra.bzl", "envoy_dependency_imports_extra")
+
+envoy_dependency_imports_extra()

bazel/dependency_imports.bzl

@@ -14,6 +14,8 @@ load("@rules_foreign_cc//foreign_cc:repositories.bzl", "rules_foreign_cc_depende
 load("@rules_fuzzing//fuzzing:repositories.bzl", "rules_fuzzing_dependencies")
 load("@rules_pkg//:deps.bzl", "rules_pkg_dependencies")
 load("@rules_proto_grpc//:repositories.bzl", "rules_proto_grpc_toolchains")
+load("@rules_rust//crate_universe:defs.bzl", "crates_repository")
+load("@rules_rust//crate_universe:repositories.bzl", "crate_universe_dependencies")
 load("@rules_rust//rust:defs.bzl", "rust_common")
 load("@rules_rust//rust:repositories.bzl", "rules_rust_dependencies", "rust_register_toolchains", "rust_repository_set")
 
@@ -51,6 +53,8 @@ def envoy_dependency_imports(go_version = GO_VERSION, jq_version = JQ_VERSION, y
             "wasm32-wasi",
         ],
     )
+    crate_universe_dependencies()
+    crates_repositories()
     shellcheck_dependencies()
     proxy_wasm_rust_sdk_dependencies()
     rules_fuzzing_dependencies(
@@ -196,3 +200,11 @@ def envoy_download_go_sdks(go_version):
         goarch = "arm64",
         version = go_version,
     )
+
+def crates_repositories():
+    crates_repository(
+        name = "dynamic_modules_rust_sdk_crate_index",
+        cargo_lockfile = "//source/extensions/dynamic_modules/sdk/rust:Cargo.lock",
+        lockfile = Label("//source/extensions/dynamic_modules/sdk/rust:Cargo.Bazel.lock"),
+        manifests = ["//source/extensions/dynamic_modules/sdk/rust:Cargo.toml"],
+    )

bazel/dependency_imports_extra.bzl

@@ -0,0 +1,5 @@
+load("@dynamic_modules_rust_sdk_crate_index//:defs.bzl", "crate_repositories")
+
+# Dependencies that rely on a first stage of envoy_dependency_imports() in dependency_imports.bzl.
+def envoy_dependency_imports_extra():
+    crate_repositories()

bazel/repository_locations.bzl

@@ -1453,9 +1453,11 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         project_desc = "Bazel rust rules (used by Wasm)",
         project_url = "https://github.com/bazelbuild/rules_rust",
         version = "0.51.0",
-        strip_prefix = "rules_rust-{version}",
-        sha256 = "44ffa703f95fe693c15fefb58432ad009379848d24012338a3c2eb9951b371e7",
-        urls = ["https://github.com/bazelbuild/rules_rust/archive/{version}.tar.gz"],
+        sha256 = "042acfb73469b2d1848fe148d81c3422c61ea47a9e1900f1c9ec36f51e8e7193",
+        # Note: rules_rust should point to the releases, not archive to avoid the hassle of bootstrapping in crate_universe.
+        # This is described in https://bazelbuild.github.io/rules_rust/crate_universe.html#setup, otherwise bootstrap
+        # is required which in turn requires a system CC toolchains, not the bazel controlled ones.
+        urls = ["https://github.com/bazelbuild/rules_rust/releases/download/{version}/rules_rust-v{version}.tar.gz"],
         use_category = [
             "controlplane",
             "dataplane_core",

source/extensions/dynamic_modules/abi.h

@@ -14,11 +14,7 @@
 // same version of the ABI.
 
 #ifdef __cplusplus
-#include <cstddef>
-
 extern "C" {
-#else
-#include <stddef.h>
 #endif
 
 // -----------------------------------------------------------------------------

source/extensions/dynamic_modules/abi_version.h

@@ -6,7 +6,7 @@ namespace DynamicModules {
 #endif
 // This is the ABI version calculated as a sha256 hash of the ABI header files. When the ABI
 // changes, this value must change, and the correctness of this value is checked by the test.
-const char* kAbiVersion = "749b1e6bf97309b7d171009700a80e651ac61e35f9770c24a63460d765895a51";
+const char* kAbiVersion = "4293760426255b24c25b97a18d9fd31b4d1956f10ba0ff2f723580a46ee8fa21";
 
 #ifdef __cplusplus
 } // namespace DynamicModules

source/extensions/dynamic_modules/sdk/rust/BUILD

@@ -1,3 +1,5 @@
+load("@dynamic_modules_rust_sdk_crate_index//:defs.bzl", "all_crate_deps")
+load("@rules_rust//cargo:defs.bzl", "cargo_build_script")
 load("@rules_rust//rust:defs.bzl", "rust_library")
 load(
     "//bazel:envoy_build_system.bzl",
@@ -8,8 +10,25 @@ licenses(["notice"])  # Apache 2
 
 envoy_extension_package()
 
+cargo_build_script(
+    name = "build_script",
+    srcs = ["build.rs"],
+    data = [
+        "//source/extensions/dynamic_modules:abi.h",
+        "//source/extensions/dynamic_modules:abi_version.h",
+    ],
+    edition = "2021",
+    deps = all_crate_deps(
+        build = True,
+        normal = True,
+    ),
+)
+
 rust_library(
     name = "envoy_proxy_dynamic_modules_rust_sdk",
     srcs = glob(["src/**/*.rs"]),
     edition = "2021",
+    deps = all_crate_deps(
+        normal = True,
+    ) + [":build_script"],
 )