src/diagnostics/lib/ring-buffer/BUILD.bazel

# Copyright 2026 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

load(
    "//build/bazel/rules/components:fx_component.bzl",
    "fx_component_manifest",
    "fx_test_component",
)
load("//build/bazel/rules/packages:fx_package.bzl", "fx_package")
load("//build/bazel/rules/packages:fx_packaged_binary.bzl", "fx_packaged_binary")
load("//build/bazel/rules/rust:defs.bzl", "rustc_library")
load("//build/bazel/rules/testing:fx_test.bzl", "fx_test")

package(default_applicable_licenses = ["//:license"])

rustc_library(
    name = "ring-buffer",
    srcs = ["src/lib.rs"],
    edition = "2024",
    lint_config = "//build/config/rust/lints:clippy_warn_all",
    # @bazel2gn:skip
    test_deps = ["//src/lib/fuchsia"],
    visibility = [
        "//src/diagnostics/archivist:__pkg__",
        "//src/diagnostics/validator/logs/sink:__pkg__",
        "//src/lib/diagnostics/fake-log-sink/rust:__pkg__",
        "//src/lib/diagnostics/log/bench:__pkg__",
        "//src/lib/diagnostics/log/rust:__pkg__",
    ],
    # @bazel2gn:skip
    with_unit_tests = True,
    deps = [
        "//sdk/rust/zx",
        "//src/lib/fuchsia-async",
        "//src/lib/fuchsia-runtime",
        "//third_party/rust_crates/vendor:futures",
        "//third_party/rust_crates/vendor:thiserror",
    ],
)

fx_packaged_binary(
    name = "ring-buffer_test_packaged_bin",
    testonly = True,
    binary = ":ring-buffer_test",
    binary_name = "ring_buffer_lib_test",
)

fx_component_manifest(
    name = "ring-buffer-tests-manifest",
    testonly = True,
    component_name = "ring-buffer-tests",
    includes = [
        "//sdk/lib/syslog:client.shard",
        "//src/sys/test_runners/rust:next-vdso.shard.cml",
    ],
    # NOTE: We need a custom manifest because we have to use the next-vdso runner.
    manifest = "meta/ring_buffer_tests.cml",
)

fx_test_component(
    name = "ring-buffer-tests-component",
    compiled_manifest = ":ring-buffer-tests-manifest",
    deps = [":ring-buffer_test_packaged_bin"],
)

# Bazel-only test, because the unit tests of `:ring-buffer` are skipped.
# @bazel2gn:skip
fx_package(
    name = "ring-buffer-tests-package",
    package_name = "ring-buffer-tests",
    test_components = [":ring-buffer-tests-component"],
)

fx_test(
    name = "ring-buffer-tests",
    package = ":ring-buffer-tests-package",
    visibility = ["//src/diagnostics:__pkg__"],
)