Setup Prost and Tonic rules.

WORKSPACE.bazel

@@ -10,9 +10,11 @@ load("@rules_rust//crate_universe:repositories.bzl", "crate_universe_dependencie
 
 crate_universe_dependencies(bootstrap = True)
 
-load("@rules_rust//proto:repositories.bzl", "rust_proto_repositories")
+load("@rules_rust//proto:repositories.bzl", "rust_proto_dependencies", "rust_proto_register_toolchains")
 
-rust_proto_repositories()
+rust_proto_dependencies()
+
+rust_proto_register_toolchains()
 
 load("@rules_rust//proto:transitive_repositories.bzl", "rust_proto_transitive_repositories")
 

crate_universe/private/crates_vendor.bzl

@@ -346,7 +346,7 @@ bazel run //3rdparty:crates_vendor -- --repin
 ```
 
 Under the hood, `--repin` will trigger a [cargo update](https://doc.rust-lang.org/cargo/commands/cargo-update.html)
-call against the generated workspace. The following table describes how to controll particular values passed to the
+call against the generated workspace. The following table describes how to control particular values passed to the
 `cargo update` command.
 
 | Value | Cargo command |

proto/defs.bzl

@@ -0,0 +1,18 @@
+"""Rust proto rules."""
+
+load(
+    "//proto/prost:defs.bzl",
+    _rust_prost_library = "rust_prost_library",
+    _rust_tonic_library = "rust_tonic_library",
+)
+load(
+    ":proto.bzl",
+    _rust_grpc_library = "rust_grpc_library",
+    _rust_proto_library = "rust_proto_library",
+)
+
+rust_proto_library = _rust_proto_library
+rust_grpc_library = _rust_grpc_library
+
+rust_prost_library = _rust_prost_library
+rust_tonic_library = _rust_tonic_library

proto/prost/BUILD.bazel

@@ -0,0 +1,50 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+load("//rust:defs.bzl", "rust_library_group")
+load(":defs.bzl", "rust_prost_toolchain")
+
+package(default_visibility = ["//visibility:public"])
+
+toolchain_type(
+    name = "toolchain_type",
+)
+
+rust_library_group(
+    name = "prost_runtime",
+    deps = [
+        "//proto/prost/private/3rdparty/crates:prost",
+    ],
+)
+
+rust_library_group(
+    name = "tonic_runtime",
+    deps = [
+        ":prost_runtime",
+        "//proto/prost/private/3rdparty/crates:tonic",
+    ],
+)
+
+rust_prost_toolchain(
+    name = "default_prost_toolchain_impl",
+    prost_plugin = "//proto/prost/private/3rdparty/crates:protoc-gen-prost__protoc-gen-prost",
+    prost_plugin_flag = "--plugin=protoc-gen-prost=%s",
+    prost_runtime = ":prost_runtime",
+    proto_compiler = "@com_google_protobuf//:protoc",
+    tonic_plugin = "//proto/prost/private/3rdparty/crates:protoc-gen-tonic__protoc-gen-tonic",
+    tonic_plugin_flag = "--plugin=protoc-gen-tonic=%s",
+    tonic_runtime = ":tonic_runtime",
+)
+
+toolchain(
+    name = "default_prost_toolchain",
+    toolchain = "default_prost_toolchain_impl",
+    toolchain_type = "//proto/prost:toolchain_type",
+)
+
+bzl_library(
+    name = "bzl_lib",
+    srcs = glob(["**/*.bzl"]),
+    deps = [
+        "//proto/prost/private:bzl_lib",
+        "//rust:bzl_lib",
+    ],
+)

proto/prost/defs.bzl

@@ -0,0 +1,56 @@
+"""Rules for building proto libraries in Rust."""
+
+load(
+    "//proto/prost/private:prost.bzl",
+    _rust_prost_library = "rust_prost_library",
+    _rust_prost_toolchain = "rust_prost_toolchain",
+    _rust_tonic_library = "rust_tonic_library",
+)
+
+def rust_prost_library(name, **kwargs):
+    """A rule for generating a Rust library using Prost.
+
+    Args:
+        name (str): The name of the target.
+        **kwargs (dict): Additional keyword arguments for the underlying
+            `rust_prost_library` rule.
+    """
+
+    # Clippy and Rustfmt will attempt to run on these targets.
+    # This is not correct and likely a bug in target detection.
+    tags = kwargs.pop("tags", [])
+    if "no-clippy" not in tags:
+        tags.append("no-clippy")
+    if "no-rustfmt" not in tags:
+        tags.append("no-rustfmt")
+
+    _rust_prost_library(
+        name = name,
+        tags = tags,
+        **kwargs
+    )
+
+def rust_tonic_library(name, **kwargs):
+    """A rule for generating a Rust library using Prost and Tonic.
+
+    Args:
+        name (str): The name of the target.
+        **kwargs (dict): Additional keyword arguments for the underlying
+            `rust_tonic_library` rule.
+    """
+
+    # Clippy and Rustfmt will attempt to run on these targets.
+    # This is not correct and likely a bug in target detection.
+    tags = kwargs.pop("tags", [])
+    if "no-clippy" not in tags:
+        tags.append("no-clippy")
+    if "no-rustfmt" not in tags:
+        tags.append("no-rustfmt")
+
+    _rust_tonic_library(
+        name = name,
+        tags = tags,
+        **kwargs
+    )
+
+rust_prost_toolchain = _rust_prost_toolchain

proto/prost/private/3rdparty/BUILD.bazel

@@ -0,0 +1,54 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+load("//crate_universe:defs.bzl", "crate", "crates_vendor")
+
+crates_vendor(
+    name = "crates_vendor",
+    annotations = {
+        "protoc-gen-prost": [crate.annotation(
+            gen_binaries = ["protoc-gen-prost"],
+        )],
+        "protoc-gen-tonic": [crate.annotation(
+            gen_binaries = ["protoc-gen-tonic"],
+        )],
+    },
+    cargo_lockfile = "Cargo.Bazel.lock",
+    mode = "remote",
+    packages = {
+        "h2": crate.spec(
+            version = "0.3.19",
+        ),
+        "prost": crate.spec(
+            version = "0.11.9",
+        ),
+        "prost-types": crate.spec(
+            version = "0.11.9",
+        ),
+        "protoc-gen-prost": crate.spec(
+            version = "0.2.2",
+        ),
+        "protoc-gen-tonic": crate.spec(
+            version = "0.2.2",
+        ),
+        "tokio": crate.spec(
+            features = ["full"],
+            version = "1.28.2",
+        ),
+        "tokio-stream": crate.spec(
+            version = "0.1.14",
+        ),
+        "tonic": crate.spec(
+            version = "0.9.2",
+        ),
+    },
+    repository_name = "rules_rust_prost",
+    tags = ["manual"],
+)
+
+bzl_library(
+    name = "bzl_lib",
+    srcs = [
+        "//proto/prost/private/3rdparty/crates:crates.bzl",
+        "//proto/prost/private/3rdparty/crates:defs.bzl",
+    ],
+    visibility = ["//proto/prost/private:__pkg__"],
+)