aconfig: update cpp/rust codegen (273807a7) · Commits · e / os / android_build

tools/aconfig/aconfig/src/codegen/cpp.rs

+236 −168

Original line number	Diff line number	Diff line
		@@ -31,7 +31,6 @@ pub fn generate_cpp_code<I>(
		parsed_flags_iter: I,
		codegen_mode: CodegenMode,
		flag_ids: HashMap<String, u16>,
		allow_instrumentation: bool,
		) -> Result<Vec<OutputFile>>
		where
		I: Iterator<Item = ProtoParsedFlag>,
		@@ -59,7 +58,6 @@ where
		is_test_mode: codegen_mode == CodegenMode::Test,
		class_elements,
		container,
		allow_instrumentation,
		};

		let files = [
		@@ -104,7 +102,6 @@ pub struct Context<'a> {
		pub is_test_mode: bool,
		pub class_elements: Vec<ClassElement>,
		pub container: String,
		pub allow_instrumentation: bool,
		}

		#[derive(Serialize)]
		@@ -449,56 +446,6 @@ void com_android_aconfig_test_reset_flags();
		#endif


		"#;

		const EXPORTED_EXPORTED_HEADER_EXPECTED: &str = r#"
		#pragma once

		#ifdef __cplusplus

		#include <memory>

		namespace com::android::aconfig::test {

		class flag_provider_interface {
		public:
		virtual ~flag_provider_interface() = default;

		virtual bool disabled_rw_exported() = 0;

		virtual bool enabled_fixed_ro_exported() = 0;

		virtual bool enabled_ro_exported() = 0;
		};

		extern std::unique_ptr<flag_provider_interface> provider_;

		inline bool disabled_rw_exported() {
		return provider_->disabled_rw_exported();
		}

		inline bool enabled_fixed_ro_exported() {
		return provider_->enabled_fixed_ro_exported();
		}

		inline bool enabled_ro_exported() {
		return provider_->enabled_ro_exported();
		}

		}

		extern "C" {
		#endif // __cplusplus

		bool com_android_aconfig_test_disabled_rw_exported();

		bool com_android_aconfig_test_enabled_fixed_ro_exported();

		bool com_android_aconfig_test_enabled_ro_exported();

		#ifdef __cplusplus
		} // extern "C"
		#endif
		"#;

		const EXPORTED_FORCE_READ_ONLY_HEADER_EXPECTED: &str = r#"
		@@ -585,7 +532,13 @@ bool com_android_aconfig_test_enabled_rw();

		const PROD_SOURCE_FILE_EXPECTED: &str = r#"
		#include "com_android_aconfig_test.h"
		#include <server_configurable_flags/get_flags.h>

		#include <unistd.h>
		#include "aconfig_storage/aconfig_storage_read_api.hpp"
		#include <android/log.h>
		#define LOG_TAG "aconfig_cpp_codegen"
		#define ALOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)

		#include <vector>

		namespace com::android::aconfig::test {
		@@ -593,36 +546,116 @@ namespace com::android::aconfig::test {
		class flag_provider : public flag_provider_interface {
		public:

		flag_provider()
		: cache_(4, -1)
		, boolean_start_index_()
		, flag_value_file_(nullptr)
		, package_exists_in_storage_(true) {

		auto package_map_file = aconfig_storage::get_mapped_file(
		"system",
		aconfig_storage::StorageFileType::package_map);
		if (!package_map_file.ok()) {
		ALOGE("error: failed to get package map file: %s", package_map_file.error().c_str());
		package_exists_in_storage_ = false;
		return;
		}

		auto context = aconfig_storage::get_package_read_context(
		**package_map_file, "com.android.aconfig.test");
		if (!context.ok()) {
		ALOGE("error: failed to get package read context: %s", context.error().c_str());
		package_exists_in_storage_ = false;
		return;
		}

		if (!(context->package_exists)) {
		package_exists_in_storage_ = false;
		return;
		}

		// cache package boolean flag start index
		boolean_start_index_ = context->boolean_start_index;

		// unmap package map file and free memory
		delete *package_map_file;

		auto flag_value_file = aconfig_storage::get_mapped_file(
		"system",
		aconfig_storage::StorageFileType::flag_val);
		if (!flag_value_file.ok()) {
		ALOGE("error: failed to get flag value file: %s", flag_value_file.error().c_str());
		package_exists_in_storage_ = false;
		return;
		}

		// cache flag value file
		flag_value_file_ = std::unique_ptr<aconfig_storage::MappedStorageFile>(
		*flag_value_file);

		}


		virtual bool disabled_ro() override {
		return false;
		}

		virtual bool disabled_rw() override {
		if (cache_[0] == -1) {
		cache_[0] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.disabled_rw",
		"false") == "true";
		if (!package_exists_in_storage_) {
		return false;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 0);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return false;
		}

		cache_[0] = *value;
		}
		return cache_[0];
		}

		virtual bool disabled_rw_exported() override {
		if (cache_[1] == -1) {
		cache_[1] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.disabled_rw_exported",
		"false") == "true";
		if (!package_exists_in_storage_) {
		return false;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 1);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return false;
		}

		cache_[1] = *value;
		}
		return cache_[1];
		}

		virtual bool disabled_rw_in_other_namespace() override {
		if (cache_[2] == -1) {
		cache_[2] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.other_namespace",
		"com.android.aconfig.test.disabled_rw_in_other_namespace",
		"false") == "true";
		if (!package_exists_in_storage_) {
		return false;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 2);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return false;
		}

		cache_[2] = *value;
		}
		return cache_[2];
		}
		@@ -645,16 +678,32 @@ namespace com::android::aconfig::test {

		virtual bool enabled_rw() override {
		if (cache_[3] == -1) {
		cache_[3] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.enabled_rw",
		"true") == "true";
		if (!package_exists_in_storage_) {
		return true;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 7);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return true;
		}

		cache_[3] = *value;
		}
		return cache_[3];
		}

		private:
		std::vector<int8_t> cache_ = std::vector<int8_t>(4, -1);

		uint32_t boolean_start_index_;

		std::unique_ptr<aconfig_storage::MappedStorageFile> flag_value_file_;

		bool package_exists_in_storage_;
		};

		std::unique_ptr<flag_provider_interface> provider_ =
		@@ -701,7 +750,13 @@ bool com_android_aconfig_test_enabled_rw() {

		const TEST_SOURCE_FILE_EXPECTED: &str = r#"
		#include "com_android_aconfig_test.h"
		#include <server_configurable_flags/get_flags.h>

		#include <unistd.h>
		#include "aconfig_storage/aconfig_storage_read_api.hpp"
		#include <android/log.h>
		#define LOG_TAG "aconfig_cpp_codegen"
		#define ALOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)

		#include <unordered_map>
		#include <string>

		@@ -711,10 +766,63 @@ namespace com::android::aconfig::test {
		private:
		std::unordered_map<std::string, bool> overrides_;

		uint32_t boolean_start_index_;

		std::unique_ptr<aconfig_storage::MappedStorageFile> flag_value_file_;

		bool package_exists_in_storage_;

		public:
		flag_provider()
		: overrides_()
		{}
		, boolean_start_index_()
		, flag_value_file_(nullptr)
		, package_exists_in_storage_(true) {

		auto package_map_file = aconfig_storage::get_mapped_file(
		"system",
		aconfig_storage::StorageFileType::package_map);

		if (!package_map_file.ok()) {
		ALOGE("error: failed to get package map file: %s", package_map_file.error().c_str());
		package_exists_in_storage_ = false;
		return;
		}

		auto context = aconfig_storage::get_package_read_context(
		**package_map_file, "com.android.aconfig.test");

		if (!context.ok()) {
		ALOGE("error: failed to get package read context: %s", context.error().c_str());
		package_exists_in_storage_ = false;
		return;
		}

		if (!(context->package_exists)) {
		package_exists_in_storage_ = false;
		return;
		}

		// cache package boolean flag start index
		boolean_start_index_ = context->boolean_start_index;

		// unmap package map file and free memory
		delete *package_map_file;

		auto flag_value_file = aconfig_storage::get_mapped_file(
		"system",
		aconfig_storage::StorageFileType::flag_val);
		if (!flag_value_file.ok()) {
		ALOGE("error: failed to get flag value file: %s", flag_value_file.error().c_str());
		package_exists_in_storage_ = false;
		return;
		}

		// cache flag value file
		flag_value_file_ = std::unique_ptr<aconfig_storage::MappedStorageFile>(
		*flag_value_file);

		}

		virtual bool disabled_ro() override {
		auto it = overrides_.find("disabled_ro");
		@@ -734,10 +842,20 @@ namespace com::android::aconfig::test {
		if (it != overrides_.end()) {
		return it->second;
		} else {
		return server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.disabled_rw",
		"false") == "true";
		if (!package_exists_in_storage_) {
		return false;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 0);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return false;
		} else {
		return *value;
		}
		}
		}

		@@ -750,10 +868,20 @@ namespace com::android::aconfig::test {
		if (it != overrides_.end()) {
		return it->second;
		} else {
		return server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.disabled_rw_exported",
		"false") == "true";
		if (!package_exists_in_storage_) {
		return false;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 1);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return false;
		} else {
		return *value;
		}
		}
		}

		@@ -766,10 +894,20 @@ namespace com::android::aconfig::test {
		if (it != overrides_.end()) {
		return it->second;
		} else {
		return server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.other_namespace",
		"com.android.aconfig.test.disabled_rw_in_other_namespace",
		"false") == "true";
		if (!package_exists_in_storage_) {
		return false;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 2);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return false;
		} else {
		return *value;
		}
		}
		}

		@@ -834,10 +972,20 @@ namespace com::android::aconfig::test {
		if (it != overrides_.end()) {
		return it->second;
		} else {
		return server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.enabled_rw",
		"true") == "true";
		if (!package_exists_in_storage_) {
		return true;
		}

		auto value = aconfig_storage::get_boolean_flag_value(
		*flag_value_file_,
		boolean_start_index_ + 7);

		if (!value.ok()) {
		ALOGE("error: failed to read flag value: %s", value.error().c_str());
		return true;
		} else {
		return *value;
		}
		}
		}

		@@ -940,68 +1088,6 @@ void com_android_aconfig_test_reset_flags() {
		com::android::aconfig::test::reset_flags();
		}

		"#;

		const EXPORTED_SOURCE_FILE_EXPECTED: &str = r#"
		#include "com_android_aconfig_test.h"
		#include <server_configurable_flags/get_flags.h>
		#include <vector>

		namespace com::android::aconfig::test {

		class flag_provider : public flag_provider_interface {
		public:
		virtual bool disabled_rw_exported() override {
		if (cache_[0] == -1) {
		cache_[0] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.disabled_rw_exported",
		"false") == "true";
		}
		return cache_[0];
		}

		virtual bool enabled_fixed_ro_exported() override {
		if (cache_[1] == -1) {
		cache_[1] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.enabled_fixed_ro_exported",
		"false") == "true";
		}
		return cache_[1];
		}

		virtual bool enabled_ro_exported() override {
		if (cache_[2] == -1) {
		cache_[2] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.aconfig_test",
		"com.android.aconfig.test.enabled_ro_exported",
		"false") == "true";
		}
		return cache_[2];
		}

		private:
		std::vector<int8_t> cache_ = std::vector<int8_t>(3, -1);
		};

		std::unique_ptr<flag_provider_interface> provider_ =
		std::make_unique<flag_provider>();
		}

		bool com_android_aconfig_test_disabled_rw_exported() {
		return com::android::aconfig::test::disabled_rw_exported();
		}

		bool com_android_aconfig_test_enabled_fixed_ro_exported() {
		return com::android::aconfig::test::enabled_fixed_ro_exported();
		}

		bool com_android_aconfig_test_enabled_ro_exported() {
		return com::android::aconfig::test::enabled_ro_exported();
		}


		"#;

		const FORCE_READ_ONLY_SOURCE_FILE_EXPECTED: &str = r#"
		@@ -1188,7 +1274,6 @@ bool com_android_aconfig_test_enabled_ro() {
		mode: CodegenMode,
		expected_header: &str,
		expected_src: &str,
		allow_instrumentation: bool,
		) {
		let modified_parsed_flags =
		crate::commands::modify_parsed_flags_based_on_mode(parsed_flags, mode).unwrap();
		@@ -1199,7 +1284,6 @@ bool com_android_aconfig_test_enabled_ro() {
		modified_parsed_flags.into_iter(),
		mode,
		flag_ids,
		allow_instrumentation,
		)
		.unwrap();
		let mut generated_files_map = HashMap::new();
		@@ -1239,7 +1323,6 @@ bool com_android_aconfig_test_enabled_ro() {
		CodegenMode::Production,
		EXPORTED_PROD_HEADER_EXPECTED,
		PROD_SOURCE_FILE_EXPECTED,
		false,
		);
		}

		@@ -1251,19 +1334,6 @@ bool com_android_aconfig_test_enabled_ro() {
		CodegenMode::Test,
		EXPORTED_TEST_HEADER_EXPECTED,
		TEST_SOURCE_FILE_EXPECTED,
		false,
		);
		}

		#[test]
		fn test_generate_cpp_code_for_exported() {
		let parsed_flags = crate::test::parse_test_flags();
		test_generate_cpp_code(
		parsed_flags,
		CodegenMode::Exported,
		EXPORTED_EXPORTED_HEADER_EXPECTED,
		EXPORTED_SOURCE_FILE_EXPECTED,
		false,
		);
		}

		@@ -1275,7 +1345,6 @@ bool com_android_aconfig_test_enabled_ro() {
		CodegenMode::ForceReadOnly,
		EXPORTED_FORCE_READ_ONLY_HEADER_EXPECTED,
		FORCE_READ_ONLY_SOURCE_FILE_EXPECTED,
		false,
		);
		}

		@@ -1287,7 +1356,6 @@ bool com_android_aconfig_test_enabled_ro() {
		CodegenMode::Production,
		READ_ONLY_EXPORTED_PROD_HEADER_EXPECTED,
		READ_ONLY_PROD_SOURCE_FILE_EXPECTED,
		false,
		);
		}
		}

tools/aconfig/aconfig/src/codegen/rust.rs

+184 −244

File changed.

Preview size limit exceeded, changes collapsed.

tools/aconfig/aconfig/src/commands.rs

+4 −24

Original line number	Diff line number	Diff line
		@@ -241,11 +241,7 @@ pub fn create_java_lib(
		)
		}

		pub fn create_cpp_lib(
		mut input: Input,
		codegen_mode: CodegenMode,
		allow_instrumentation: bool,
		) -> Result<Vec<OutputFile>> {
		pub fn create_cpp_lib(mut input: Input, codegen_mode: CodegenMode) -> Result<Vec<OutputFile>> {
		// TODO(327420679): Enable export mode for native flag library
		ensure!(
		codegen_mode != CodegenMode::Exported,
		@@ -258,20 +254,10 @@ pub fn create_cpp_lib(
		};
		let package = package.to_string();
		let flag_ids = assign_flag_ids(&package, modified_parsed_flags.iter())?;
		generate_cpp_code(
		&package,
		modified_parsed_flags.into_iter(),
		codegen_mode,
		flag_ids,
		allow_instrumentation,
		)
		generate_cpp_code(&package, modified_parsed_flags.into_iter(), codegen_mode, flag_ids)
		}

		pub fn create_rust_lib(
		mut input: Input,
		codegen_mode: CodegenMode,
		allow_instrumentation: bool,
		) -> Result<OutputFile> {
		pub fn create_rust_lib(mut input: Input, codegen_mode: CodegenMode) -> Result<OutputFile> {
		// // TODO(327420679): Enable export mode for native flag library
		ensure!(
		codegen_mode != CodegenMode::Exported,
		@@ -284,13 +270,7 @@ pub fn create_rust_lib(
		};
		let package = package.to_string();
		let flag_ids = assign_flag_ids(&package, modified_parsed_flags.iter())?;
		generate_rust_code(
		&package,
		flag_ids,
		modified_parsed_flags.into_iter(),
		codegen_mode,
		allow_instrumentation,
		)
		generate_rust_code(&package, flag_ids, modified_parsed_flags.into_iter(), codegen_mode)
		}

		pub fn create_storage(

tools/aconfig/aconfig/src/main.rs

+4 −8

Original line number	Diff line number	Diff line
		@@ -285,10 +285,8 @@ fn main() -> Result<()> {
		Some(("create-cpp-lib", sub_matches)) => {
		let cache = open_single_file(sub_matches, "cache")?;
		let mode = get_required_arg::<CodegenMode>(sub_matches, "mode")?;
		let allow_instrumentation =
		get_required_arg::<bool>(sub_matches, "allow-instrumentation")?;
		let generated_files = commands::create_cpp_lib(cache, mode, allow_instrumentation)
		.context("failed to create cpp lib")?;
		let generated_files =
		commands::create_cpp_lib(cache, *mode).context("failed to create cpp lib")?;
		let dir = PathBuf::from(get_required_arg::<String>(sub_matches, "out")?);
		generated_files
		.iter()
		@@ -297,10 +295,8 @@ fn main() -> Result<()> {
		Some(("create-rust-lib", sub_matches)) => {
		let cache = open_single_file(sub_matches, "cache")?;
		let mode = get_required_arg::<CodegenMode>(sub_matches, "mode")?;
		let allow_instrumentation =
		get_required_arg::<bool>(sub_matches, "allow-instrumentation")?;
		let generated_file = commands::create_rust_lib(cache, mode, allow_instrumentation)
		.context("failed to create rust lib")?;
		let generated_file =
		commands::create_rust_lib(cache, *mode).context("failed to create rust lib")?;
		let dir = PathBuf::from(get_required_arg::<String>(sub_matches, "out")?);
		write_output_file_realtive_to_dir(&dir, &generated_file)?;
		}

tools/aconfig/aconfig/templates/cpp_source_file.template

+1 −31

Original line number	Diff line number	Diff line
		#include "{header}.h"

		{{ if allow_instrumentation }}
		{{ if readwrite- }}
		#include <unistd.h>
		#include "aconfig_storage/aconfig_storage_read_api.hpp"
		@@ -8,11 +7,7 @@
		#define LOG_TAG "aconfig_cpp_codegen"
		#define ALOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
		{{ -endif }}
		{{ endif }}

		{{ if readwrite- }}
		#include <server_configurable_flags/get_flags.h>
		{{ endif }}
		{{ if is_test_mode }}
		#include <unordered_map>
		#include <string>
		@@ -29,7 +24,6 @@ namespace {cpp_namespace} \{
		private:
		std::unordered_map<std::string, bool> overrides_;

		{{ if allow_instrumentation- }}
		{{ if readwrite- }}
		uint32_t boolean_start_index_;

		@@ -37,10 +31,8 @@ namespace {cpp_namespace} \{

		bool package_exists_in_storage_;
		{{ -endif }}
		{{ -endif }}

		public:
		{{ if allow_instrumentation- }}
		{{ if readwrite- }}
		flag_provider()
		: overrides_()
		@@ -97,11 +89,6 @@ namespace {cpp_namespace} \{
		: overrides_()
		\{}
		{{ -endif }}
		{{ -else }}
		flag_provider()
		: overrides_()
		\{}
		{{ -endif }}

		{{ for item in class_elements }}
		virtual bool {item.flag_name}() override \{
		@@ -110,7 +97,6 @@ namespace {cpp_namespace} \{
		return it->second;
		} else \{
		{{ if item.readwrite- }}
		{{ if allow_instrumentation- }}
		if (!package_exists_in_storage_) \{
		return {item.default_value};
		}
		@@ -126,12 +112,6 @@ namespace {cpp_namespace} \{
		return *value;
		}
		{{ -else }}
		return server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.{item.device_config_namespace}",
		"{item.device_config_flag}",
		"{item.default_value}") == "true";
		{{ -endif }}
		{{ -else }}
		return {item.default_value};
		{{ -endif }}
		}
		@@ -153,7 +133,6 @@ namespace {cpp_namespace} \{
		public:

		{{ if readwrite- }}
		{{ if allow_instrumentation- }}
		flag_provider()
		: cache_({readwrite_count}, -1)
		, boolean_start_index_()
		@@ -203,13 +182,11 @@ namespace {cpp_namespace} \{

		}
		{{ -endif }}
		{{ -endif }}

		{{ -for item in class_elements }}
		virtual bool {item.flag_name}() override \{
		{{ -if item.readwrite }}
		if (cache_[{item.readwrite_idx}] == -1) \{
		{{ if allow_instrumentation- }}
		if (!package_exists_in_storage_) \{
		return {item.default_value};
		}
		@@ -224,12 +201,6 @@ namespace {cpp_namespace} \{
		}

		cache_[{item.readwrite_idx}] = *value;
		{{ -else- }}
		cache_[{item.readwrite_idx}] = server_configurable_flags::GetServerConfigurableFlag(
		"aconfig_flags.{item.device_config_namespace}",
		"{item.device_config_flag}",
		"{item.default_value}") == "true";
		{{ -endif }}
		}
		return cache_[{item.readwrite_idx}];
		{{ -else }}
		@@ -245,14 +216,13 @@ namespace {cpp_namespace} \{
		{{ if readwrite- }}
		private:
		std::vector<int8_t> cache_ = std::vector<int8_t>({readwrite_count}, -1);
		{{ if allow_instrumentation- }}

		uint32_t boolean_start_index_;

		std::unique_ptr<aconfig_storage::MappedStorageFile> flag_value_file_;

		bool package_exists_in_storage_;
		{{ -endif }}
		{{ -endif }}

		};