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Merge "health: Remove 2.0 HAL implementation." into main

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Treehugger Robot 2024-01-09 00:28:28 +00:00 committed by Gerrit Code Review
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184
health/2.0/README.md
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# Implement the 2.1 HAL instead!
# Deprecated.
It is strongly recommended that you implement the 2.1 HAL directly. See
`hardware/interfaces/health/2.1/README.md` for more details.
Health HIDL HAL 2.0 is deprecated and subject to removal. Please
implement the Health AIDL HAL instead.
# Upgrading from Health 1.0 HAL
1. Remove `android.hardware.health@1.0*` from `PRODUCT_PACKAGES`
in `device/<manufacturer>/<device>/device.mk`
1. If the device does not have a vendor-specific `libhealthd` AND does not
implement storage-related APIs, just do the following:
```mk
PRODUCT_PACKAGES += android.hardware.health@2.0-service
```
Otherwise, continue to the next step.
1. Create directory
`device/<manufacturer>/<device>/health`
1. Create `device/<manufacturer>/<device>/health/Android.bp`
(or equivalent `device/<manufacturer>/<device>/health/Android.mk`)
```bp
cc_binary {
name: "android.hardware.health@2.0-service.<device>",
init_rc: ["android.hardware.health@2.0-service.<device>.rc"],
proprietary: true,
relative_install_path: "hw",
srcs: [
"HealthService.cpp",
],
cflags: [
"-Wall",
"-Werror",
],
static_libs: [
"android.hardware.health@2.0-impl",
"android.hardware.health@1.0-convert",
"libhealthservice",
"libbatterymonitor",
],
shared_libs: [
"libbase",
"libcutils",
"libhidlbase",
"libutils",
"android.hardware.health@2.0",
],
header_libs: ["libhealthd_headers"],
overrides: [
"healthd",
],
}
```
1. (recommended) To remove `healthd` from the build, keep "overrides" section.
1. To keep `healthd` in the build, remove "overrides" section.
1. Create `device/<manufacturer>/<device>/health/android.hardware.health@2.0-service.<device>.rc`
```rc
service vendor.health-hal-2-0 /vendor/bin/hw/android.hardware.health@2.0-service.<device>
class hal
user system
group system
capabilities WAKE_ALARM
file /dev/kmsg w
```
1. Create `device/<manufacturer>/<device>/health/HealthService.cpp`:
```c++
#include <health2/service.h>
int main() { return health_service_main(); }
```
1. `libhealthd` dependency:
1. If the device has a vendor-specific `libhealthd.<soc>`, add it to static_libs.
1. If the device does not have a vendor-specific `libhealthd`, add the following
lines to `HealthService.cpp`:
```c++
#include <healthd/healthd.h>
void healthd_board_init(struct healthd_config*) {}
int healthd_board_battery_update(struct android::BatteryProperties*) {
// return 0 to log periodic polled battery status to kernel log
return 0;
}
```
1. Storage related APIs:
1. If the device does not implement `IHealth.getDiskStats` and
`IHealth.getStorageInfo`, add `libhealthstoragedefault` to `static_libs`.
1. If the device implements one of these two APIs, add and implement the
following functions in `HealthService.cpp`:
```c++
void get_storage_info(std::vector<struct StorageInfo>& info) {
// ...
}
void get_disk_stats(std::vector<struct DiskStats>& stats) {
// ...
}
```
1. Update necessary SELinux permissions. For example,
```
# device/<manufacturer>/<device>/sepolicy/vendor/file_contexts
/vendor/bin/hw/android\.hardware\.health@2\.0-service\.<device> u:object_r:hal_health_default_exec:s0
# device/<manufacturer>/<device>/sepolicy/vendor/hal_health_default.te
# Add device specific permissions to hal_health_default domain, especially
# if a device-specific libhealthd is used and/or device-specific storage related
# APIs are implemented.
```
1. Implementing health HAL in recovery. The health HAL is used for battery
status checks during OTA for non-A/B devices. If the health HAL is not
implemented in recovery, `is_battery_ok()` will always return `true`.
1. If the device does not have a vendor-specific `libhealthd`, nothing needs to
be done. A "backup" implementation is provided in
`android.hardware.health@2.0-impl-default`, which is always installed to recovery
image by default.
1. If the device does have a vendor-specific `libhealthd`, implement the following
module and include it in `PRODUCT_PACKAGES` (replace `<device>` with appropriate
strings):
```bp
// Android.bp
cc_library_shared {
name: "android.hardware.health@2.0-impl-<device>",
recovery_available: true,
relative_install_path: "hw",
static_libs: [
"android.hardware.health@2.0-impl",
"libhealthd.<device>"
// Include the following or implement device-specific storage APIs
"libhealthstoragedefault",
],
srcs: [
"HealthImpl.cpp",
],
overrides: [
"android.hardware.health@2.0-impl-default",
],
}
```
```c++
// HealthImpl.cpp
#include <health2/Health.h>
#include <healthd/healthd.h>
using android::hardware::health::V2_0::IHealth;
using android::hardware::health::V2_0::implementation::Health;
extern "C" IHealth* HIDL_FETCH_IHealth(const char* name) {
const static std::string providedInstance{"default"};
if (providedInstance != name) return nullptr;
return Health::initInstance(&gHealthdConfig).get();
}
```
```mk
# device.mk
PRODUCT_PACKAGES += android.hardware.health@2.0-impl-<device>
```
See [`hardware/interfaces/health/aidl/README.md`](../aidl/README.md) for
details.

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health/2.0/default/Android.bp
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package {
// See: http://go/android-license-faq
// A large-scale-change added 'default_applicable_licenses' to import
// all of the 'license_kinds' from "hardware_interfaces_license"
// to get the below license kinds:
// SPDX-license-identifier-Apache-2.0
default_applicable_licenses: ["hardware_interfaces_license"],
}
cc_defaults {
name: "android.hardware.health@2.0-impl_defaults",
recovery_available: true,
cflags: [
"-Wall",
"-Werror",
],
shared_libs: [
"libbase",
"libhidlbase",
"liblog",
"libutils",
"libcutils",
"android.hardware.health@2.0",
],
static_libs: [
"libbatterymonitor",
"android.hardware.health@1.0-convert",
],
}
// Helper library for implementing health HAL. It is recommended that a health
// service or passthrough HAL link to this library.
cc_library_static {
name: "android.hardware.health@2.0-impl",
defaults: ["android.hardware.health@2.0-impl_defaults"],
vendor_available: true,
srcs: [
"Health.cpp",
"healthd_common_adapter.cpp",
],
whole_static_libs: [
"libhealthloop",
],
export_include_dirs: ["include"],
}
// Default passthrough implementation for recovery. Vendors can implement
// android.hardware.health@2.0-impl-recovery-<device> to customize the behavior
// of the HAL in recovery.
// The implementation does NOT start the uevent loop for polling.
cc_library_shared {
name: "android.hardware.health@2.0-impl-default",
defaults: ["android.hardware.health@2.0-impl_defaults"],
recovery_available: true,
relative_install_path: "hw",
static_libs: [
"android.hardware.health@2.0-impl",
"libhealthstoragedefault",
],
srcs: [
"HealthImplDefault.cpp",
],
}

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health/2.0/default/Health.cpp
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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "android.hardware.health@2.0-impl"
#include <android-base/logging.h>
#include <android-base/file.h>
#include <android/hardware/health/2.0/types.h>
#include <health2/Health.h>
#include <hal_conversion.h>
#include <hidl/HidlTransportSupport.h>
using HealthInfo_1_0 = android::hardware::health::V1_0::HealthInfo;
using android::hardware::health::V1_0::hal_conversion::convertFromHealthInfo;
extern void healthd_battery_update_internal(bool);
namespace android {
namespace hardware {
namespace health {
namespace V2_0 {
namespace implementation {
sp<Health> Health::instance_;
Health::Health(struct healthd_config* c) {
// TODO(b/69268160): remove when libhealthd is removed.
healthd_board_init(c);
battery_monitor_ = std::make_unique<BatteryMonitor>();
battery_monitor_->init(c);
}
// Methods from IHealth follow.
Return<Result> Health::registerCallback(const sp<IHealthInfoCallback>& callback) {
if (callback == nullptr) {
return Result::SUCCESS;
}
{
std::lock_guard<decltype(callbacks_lock_)> lock(callbacks_lock_);
callbacks_.push_back(callback);
// unlock
}
auto linkRet = callback->linkToDeath(this, 0u /* cookie */);
if (!linkRet.withDefault(false)) {
LOG(WARNING) << __func__ << "Cannot link to death: "
<< (linkRet.isOk() ? "linkToDeath returns false" : linkRet.description());
// ignore the error
}
return updateAndNotify(callback);
}
bool Health::unregisterCallbackInternal(const sp<IBase>& callback) {
if (callback == nullptr) return false;
bool removed = false;
std::lock_guard<decltype(callbacks_lock_)> lock(callbacks_lock_);
for (auto it = callbacks_.begin(); it != callbacks_.end();) {
if (interfacesEqual(*it, callback)) {
it = callbacks_.erase(it);
removed = true;
} else {
++it;
}
}
(void)callback->unlinkToDeath(this).isOk(); // ignore errors
return removed;
}
Return<Result> Health::unregisterCallback(const sp<IHealthInfoCallback>& callback) {
return unregisterCallbackInternal(callback) ? Result::SUCCESS : Result::NOT_FOUND;
}
template <typename T>
void getProperty(const std::unique_ptr<BatteryMonitor>& monitor, int id, T defaultValue,
const std::function<void(Result, T)>& callback) {
struct BatteryProperty prop;
T ret = defaultValue;
Result result = Result::SUCCESS;
status_t err = monitor->getProperty(static_cast<int>(id), &prop);
if (err != OK) {
LOG(DEBUG) << "getProperty(" << id << ")"
<< " fails: (" << err << ") " << strerror(-err);
} else {
ret = static_cast<T>(prop.valueInt64);
}
switch (err) {
case OK:
result = Result::SUCCESS;
break;
case NAME_NOT_FOUND:
result = Result::NOT_SUPPORTED;
break;
default:
result = Result::UNKNOWN;
break;
}
callback(result, static_cast<T>(ret));
}
Return<void> Health::getChargeCounter(getChargeCounter_cb _hidl_cb) {
getProperty<int32_t>(battery_monitor_, BATTERY_PROP_CHARGE_COUNTER, 0, _hidl_cb);
return Void();
}
Return<void> Health::getCurrentNow(getCurrentNow_cb _hidl_cb) {
getProperty<int32_t>(battery_monitor_, BATTERY_PROP_CURRENT_NOW, 0, _hidl_cb);
return Void();
}
Return<void> Health::getCurrentAverage(getCurrentAverage_cb _hidl_cb) {
getProperty<int32_t>(battery_monitor_, BATTERY_PROP_CURRENT_AVG, 0, _hidl_cb);
return Void();
}
Return<void> Health::getCapacity(getCapacity_cb _hidl_cb) {
getProperty<int32_t>(battery_monitor_, BATTERY_PROP_CAPACITY, 0, _hidl_cb);
return Void();
}
Return<void> Health::getEnergyCounter(getEnergyCounter_cb _hidl_cb) {
getProperty<int64_t>(battery_monitor_, BATTERY_PROP_ENERGY_COUNTER, 0, _hidl_cb);
return Void();
}
Return<void> Health::getChargeStatus(getChargeStatus_cb _hidl_cb) {
getProperty(battery_monitor_, BATTERY_PROP_BATTERY_STATUS, BatteryStatus::UNKNOWN, _hidl_cb);
return Void();
}
Return<Result> Health::update() {
if (!healthd_mode_ops || !healthd_mode_ops->battery_update) {
LOG(WARNING) << "health@2.0: update: not initialized. "
<< "update() should not be called in charger";
return Result::UNKNOWN;
}
// Retrieve all information and call healthd_mode_ops->battery_update, which calls
// notifyListeners.
battery_monitor_->updateValues();
const HealthInfo_1_0& health_info = battery_monitor_->getHealthInfo_1_0();
struct BatteryProperties props;
convertFromHealthInfo(health_info, &props);
bool log = (healthd_board_battery_update(&props) == 0);
if (log) {
battery_monitor_->logValues();
}
healthd_mode_ops->battery_update(&props);
bool chargerOnline = battery_monitor_->isChargerOnline();
// adjust uevent / wakealarm periods
healthd_battery_update_internal(chargerOnline);
return Result::SUCCESS;
}
Return<Result> Health::updateAndNotify(const sp<IHealthInfoCallback>& callback) {
std::lock_guard<decltype(callbacks_lock_)> lock(callbacks_lock_);
std::vector<sp<IHealthInfoCallback>> storedCallbacks{std::move(callbacks_)};
callbacks_.clear();
if (callback != nullptr) {
callbacks_.push_back(callback);
}
Return<Result> result = update();
callbacks_ = std::move(storedCallbacks);
return result;
}
void Health::notifyListeners(HealthInfo* healthInfo) {
std::vector<StorageInfo> info;
get_storage_info(info);
std::vector<DiskStats> stats;
get_disk_stats(stats);
int32_t currentAvg = 0;
struct BatteryProperty prop;
status_t ret = battery_monitor_->getProperty(BATTERY_PROP_CURRENT_AVG, &prop);
if (ret == OK) {
currentAvg = static_cast<int32_t>(prop.valueInt64);
}
healthInfo->batteryCurrentAverage = currentAvg;
healthInfo->diskStats = stats;
healthInfo->storageInfos = info;
std::lock_guard<decltype(callbacks_lock_)> lock(callbacks_lock_);
for (auto it = callbacks_.begin(); it != callbacks_.end();) {
auto ret = (*it)->healthInfoChanged(*healthInfo);
if (!ret.isOk() && ret.isDeadObject()) {
it = callbacks_.erase(it);
} else {
++it;
}
}
}
Return<void> Health::debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) {
if (handle != nullptr && handle->numFds >= 1) {
int fd = handle->data[0];
battery_monitor_->dumpState(fd);
getHealthInfo([fd](auto res, const auto& info) {
android::base::WriteStringToFd("\ngetHealthInfo -> ", fd);
if (res == Result::SUCCESS) {
android::base::WriteStringToFd(toString(info), fd);
} else {
android::base::WriteStringToFd(toString(res), fd);
}
android::base::WriteStringToFd("\n", fd);
});
fsync(fd);
}
return Void();
}
Return<void> Health::getStorageInfo(getStorageInfo_cb _hidl_cb) {
std::vector<struct StorageInfo> info;
get_storage_info(info);
hidl_vec<struct StorageInfo> info_vec(info);
if (!info.size()) {
_hidl_cb(Result::NOT_SUPPORTED, info_vec);
} else {
_hidl_cb(Result::SUCCESS, info_vec);
}
return Void();
}
Return<void> Health::getDiskStats(getDiskStats_cb _hidl_cb) {
std::vector<struct DiskStats> stats;
get_disk_stats(stats);
hidl_vec<struct DiskStats> stats_vec(stats);
if (!stats.size()) {
_hidl_cb(Result::NOT_SUPPORTED, stats_vec);
} else {
_hidl_cb(Result::SUCCESS, stats_vec);
}
return Void();
}
Return<void> Health::getHealthInfo(getHealthInfo_cb _hidl_cb) {
using android::hardware::health::V1_0::hal_conversion::convertToHealthInfo;
updateAndNotify(nullptr);
HealthInfo healthInfo = battery_monitor_->getHealthInfo_2_0();
std::vector<StorageInfo> info;
get_storage_info(info);
std::vector<DiskStats> stats;
get_disk_stats(stats);
int32_t currentAvg = 0;
struct BatteryProperty prop;
status_t ret = battery_monitor_->getProperty(BATTERY_PROP_CURRENT_AVG, &prop);
if (ret == OK) {
currentAvg = static_cast<int32_t>(prop.valueInt64);
}
healthInfo.batteryCurrentAverage = currentAvg;
healthInfo.diskStats = stats;
healthInfo.storageInfos = info;
_hidl_cb(Result::SUCCESS, healthInfo);
return Void();
}
void Health::serviceDied(uint64_t /* cookie */, const wp<IBase>& who) {
(void)unregisterCallbackInternal(who.promote());
}
sp<IHealth> Health::initInstance(struct healthd_config* c) {
if (instance_ == nullptr) {
instance_ = new Health(c);
}
return instance_;
}
sp<Health> Health::getImplementation() {
CHECK(instance_ != nullptr);
return instance_;
}
} // namespace implementation
} // namespace V2_0
} // namespace health
} // namespace hardware
} // namespace android

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health/2.0/default/HealthImplDefault.cpp
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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <health2/Health.h>
#include <healthd/healthd.h>
using android::hardware::health::V2_0::IHealth;
using android::hardware::health::V2_0::implementation::Health;
static struct healthd_config gHealthdConfig = {
.energyCounter = nullptr,
.boot_min_cap = 0,
.screen_on = nullptr};
void healthd_board_init(struct healthd_config*) {
// use defaults
}
int healthd_board_battery_update(struct android::BatteryProperties*) {
// return 0 to log periodic polled battery status to kernel log
return 0;
}
void healthd_mode_default_impl_init(struct healthd_config*) {
// noop
}
int healthd_mode_default_impl_preparetowait(void) {
return -1;
}
void healthd_mode_default_impl_heartbeat(void) {
// noop
}
void healthd_mode_default_impl_battery_update(struct android::BatteryProperties*) {
// noop
}
static struct healthd_mode_ops healthd_mode_default_impl_ops = {
.init = healthd_mode_default_impl_init,
.preparetowait = healthd_mode_default_impl_preparetowait,
.heartbeat = healthd_mode_default_impl_heartbeat,
.battery_update = healthd_mode_default_impl_battery_update,
};
extern "C" IHealth* HIDL_FETCH_IHealth(const char* name) {
const static std::string providedInstance{"backup"};
healthd_mode_ops = &healthd_mode_default_impl_ops;
if (providedInstance == name) {
// use defaults
// Health class stores static instance
return Health::initInstance(&gHealthdConfig).get();
}
return nullptr;
}

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health/2.0/default/healthd_common_adapter.cpp
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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Support legacy functions in healthd/healthd.h using healthd_mode_ops.
// New code should use HealthLoop directly instead.
#include <memory>
#include <cutils/klog.h>
#include <health/HealthLoop.h>
#include <health2/Health.h>
#include <healthd/healthd.h>
using android::hardware::health::HealthLoop;
using android::hardware::health::V2_0::implementation::Health;
struct healthd_mode_ops* healthd_mode_ops = nullptr;
// Adapter of HealthLoop to use legacy healthd_mode_ops.
class HealthLoopAdapter : public HealthLoop {
public:
// Expose internal functions, assuming clients calls them in the same thread
// where StartLoop is called.
int RegisterEvent(int fd, BoundFunction func, EventWakeup wakeup) {
return HealthLoop::RegisterEvent(fd, func, wakeup);
}
void AdjustWakealarmPeriods(bool charger_online) {
return HealthLoop::AdjustWakealarmPeriods(charger_online);
}
protected:
void Init(healthd_config* config) override { healthd_mode_ops->init(config); }
void Heartbeat() override { healthd_mode_ops->heartbeat(); }
int PrepareToWait() override { return healthd_mode_ops->preparetowait(); }
void ScheduleBatteryUpdate() override { Health::getImplementation()->update(); }
};
static std::unique_ptr<HealthLoopAdapter> health_loop;
int healthd_register_event(int fd, void (*handler)(uint32_t), EventWakeup wakeup) {
if (!health_loop) return -1;
auto wrapped_handler = [handler](auto*, uint32_t epevents) { handler(epevents); };
return health_loop->RegisterEvent(fd, wrapped_handler, wakeup);
}
void healthd_battery_update_internal(bool charger_online) {
if (!health_loop) return;
health_loop->AdjustWakealarmPeriods(charger_online);
}
int healthd_main() {
if (!healthd_mode_ops) {
KLOG_ERROR("healthd ops not set, exiting\n");
exit(1);
}
health_loop = std::make_unique<HealthLoopAdapter>();
int ret = health_loop->StartLoop();
// Should not reach here. The following will exit().
health_loop.reset();
return ret;
}

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health/2.0/default/include/health2/Health.h
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#ifndef ANDROID_HARDWARE_HEALTH_V2_0_HEALTH_H
#define ANDROID_HARDWARE_HEALTH_V2_0_HEALTH_H
#include <memory>
#include <vector>
#include <android/hardware/health/1.0/types.h>
#include <android/hardware/health/2.0/IHealth.h>
#include <healthd/BatteryMonitor.h>
#include <hidl/Status.h>
using android::hardware::health::V2_0::StorageInfo;
using android::hardware::health::V2_0::DiskStats;
void get_storage_info(std::vector<struct StorageInfo>& info);
void get_disk_stats(std::vector<struct DiskStats>& stats);
namespace android {
namespace hardware {
namespace health {
namespace V2_0 {
namespace implementation {
using V1_0::BatteryStatus;
using ::android::hidl::base::V1_0::IBase;
struct Health : public IHealth, hidl_death_recipient {
public:
static sp<IHealth> initInstance(struct healthd_config* c);
// Should only be called by implementation itself (-impl, -service).
// Clients should not call this function. Instead, initInstance() initializes and returns the
// global instance that has fewer functions.
static sp<Health> getImplementation();
Health(struct healthd_config* c);
void notifyListeners(HealthInfo* info);
// Methods from IHealth follow.
Return<Result> registerCallback(const sp<IHealthInfoCallback>& callback) override;
Return<Result> unregisterCallback(const sp<IHealthInfoCallback>& callback) override;
Return<Result> update() override;
Return<void> getChargeCounter(getChargeCounter_cb _hidl_cb) override;
Return<void> getCurrentNow(getCurrentNow_cb _hidl_cb) override;
Return<void> getCurrentAverage(getCurrentAverage_cb _hidl_cb) override;
Return<void> getCapacity(getCapacity_cb _hidl_cb) override;
Return<void> getEnergyCounter(getEnergyCounter_cb _hidl_cb) override;
Return<void> getChargeStatus(getChargeStatus_cb _hidl_cb) override;
Return<void> getStorageInfo(getStorageInfo_cb _hidl_cb) override;
Return<void> getDiskStats(getDiskStats_cb _hidl_cb) override;
Return<void> getHealthInfo(getHealthInfo_cb _hidl_cb) override;
// Methods from ::android::hidl::base::V1_0::IBase follow.
Return<void> debug(const hidl_handle& fd, const hidl_vec<hidl_string>& args) override;
void serviceDied(uint64_t cookie, const wp<IBase>& /* who */) override;
private:
static sp<Health> instance_;
std::recursive_mutex callbacks_lock_;
std::vector<sp<IHealthInfoCallback>> callbacks_;
std::unique_ptr<BatteryMonitor> battery_monitor_;
bool unregisterCallbackInternal(const sp<IBase>& cb);
// update() and only notify the given callback, but none of the other callbacks.
// If cb is null, do not notify any callback at all.
Return<Result> updateAndNotify(const sp<IHealthInfoCallback>& cb);
};
} // namespace implementation
} // namespace V2_0
} // namespace health
} // namespace hardware
} // namespace android
#endif // ANDROID_HARDWARE_HEALTH_V2_0_HEALTH_H

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health/2.0/utils/README.md
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@ -6,25 +6,3 @@ by healthd). C++ clients of health HAL should use this library instead of
calling `IHealth::getService()` directly.
Its Java equivalent can be found in `BatteryService.HealthServiceWrapper`.
# libhealthservice
Common code for all (hwbinder) services of the health HAL, including healthd and
vendor health service `android.hardware.health@2.0-service(.<vendor>)`. `main()` in
those binaries calls `health_service_main()` directly.
# libhealthstoragedefault
Default implementation for storage related APIs for (hwbinder) services of the
health HAL. If an implementation of the health HAL do not wish to provide any
storage info, include this library. Otherwise, it should implement the following
two functions:
```c++
void get_storage_info(std::vector<struct StorageInfo>& info) {
// ...
}
void get_disk_stats(std::vector<struct DiskStats>& stats) {
// ...
}
```

30
health/2.0/utils/libhealthhalutils/HealthHalUtils.cpp
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@ -24,34 +24,14 @@ namespace hardware {
namespace health {
namespace V2_0 {
// Deprecated. Kept to minimize migration cost.
// The function can be removed once Health 2.1 is removed
// (i.e. compatibility_matrix.7.xml is the lowest supported level).
sp<IHealth> get_health_service() {
// For the core and vendor variant, the "backup" instance points to healthd,
// which is removed.
// For the recovery variant, the "backup" instance has a different
// meaning. It points to android.hardware.health@2.0-impl-default.recovery
// which was assumed by OEMs to be always installed when a
// vendor-specific libhealthd is not necessary. Hence, its behavior
// is kept. See health/2.0/README.md.
// android.hardware.health@2.0-impl-default.recovery, and subsequently the
// special handling of recovery mode below, can be removed once health@2.1
// is the minimum required version (i.e. compatibility matrix level 5 is the
// minimum supported level). Health 2.1 requires OEMs to install the
// Health 2.1 requires OEMs to install the
// implementation to the recovery partition when it is necessary (i.e. on
// non-A/B devices, where IsBatteryOk() is needed in recovery).
for (auto&& instanceName :
#ifdef __ANDROID_RECOVERY__
{ "default", "backup" }
#else
{"default"}
#endif
) {
auto ret = IHealth::getService(instanceName);
if (ret != nullptr) {
return ret;
}
LOG(INFO) << "health: cannot get " << instanceName << " service";
}
return nullptr;
return IHealth::getService();
}
} // namespace V2_0

38
health/2.0/utils/libhealthservice/Android.bp
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@ -1,38 +0,0 @@
// Reasonable defaults for android.hardware.health@2.0-service.<device>.
// Vendor service can customize by implementing functions defined in
// libhealthd and libhealthstoragedefault.
package {
// See: http://go/android-license-faq
// A large-scale-change added 'default_applicable_licenses' to import
// all of the 'license_kinds' from "hardware_interfaces_license"
// to get the below license kinds:
// SPDX-license-identifier-Apache-2.0
default_applicable_licenses: ["hardware_interfaces_license"],
}
cc_library_static {
name: "libhealthservice",
vendor_available: true,
srcs: ["HealthServiceCommon.cpp"],
export_include_dirs: ["include"],
cflags: [
"-Wall",
"-Werror",
],
shared_libs: [
"android.hardware.health@2.0",
],
static_libs: [
"android.hardware.health@2.0-impl",
"android.hardware.health@1.0-convert",
],
export_static_lib_headers: [
"android.hardware.health@1.0-convert",
],
header_libs: ["libhealthd_headers"],
export_header_lib_headers: ["libhealthd_headers"],
}

93
health/2.0/utils/libhealthservice/HealthServiceCommon.cpp
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@ -1,93 +0,0 @@
/*
* Copyright 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "health@2.0/"
#include <android-base/logging.h>
#include <android/hardware/health/1.0/types.h>
#include <hal_conversion.h>
#include <health2/Health.h>
#include <health2/service.h>
#include <healthd/healthd.h>
#include <hidl/HidlTransportSupport.h>
#include <hwbinder/IPCThreadState.h>
using android::hardware::IPCThreadState;
using android::hardware::configureRpcThreadpool;
using android::hardware::handleTransportPoll;
using android::hardware::setupTransportPolling;
using android::hardware::health::V2_0::HealthInfo;
using android::hardware::health::V1_0::hal_conversion::convertToHealthInfo;
using android::hardware::health::V2_0::IHealth;
using android::hardware::health::V2_0::implementation::Health;
extern int healthd_main(void);
static int gBinderFd = -1;
static std::string gInstanceName;
static void binder_event(uint32_t /*epevents*/) {
if (gBinderFd >= 0) handleTransportPoll(gBinderFd);
}
void healthd_mode_service_2_0_init(struct healthd_config* config) {
LOG(INFO) << LOG_TAG << gInstanceName << " Hal is starting up...";
gBinderFd = setupTransportPolling();
if (gBinderFd >= 0) {
if (healthd_register_event(gBinderFd, binder_event))
LOG(ERROR) << LOG_TAG << gInstanceName << ": Register for binder events failed";
}
android::sp<IHealth> service = Health::initInstance(config);
CHECK_EQ(service->registerAsService(gInstanceName), android::OK)
<< LOG_TAG << gInstanceName << ": Failed to register HAL";
LOG(INFO) << LOG_TAG << gInstanceName << ": Hal init done";
}
int healthd_mode_service_2_0_preparetowait(void) {
IPCThreadState::self()->flushCommands();
return -1;
}
void healthd_mode_service_2_0_heartbeat(void) {
// noop
}
void healthd_mode_service_2_0_battery_update(struct android::BatteryProperties* prop) {
HealthInfo info;
convertToHealthInfo(prop, info.legacy);
Health::getImplementation()->notifyListeners(&info);
}
static struct healthd_mode_ops healthd_mode_service_2_0_ops = {
.init = healthd_mode_service_2_0_init,
.preparetowait = healthd_mode_service_2_0_preparetowait,
.heartbeat = healthd_mode_service_2_0_heartbeat,
.battery_update = healthd_mode_service_2_0_battery_update,
};
int health_service_main(const char* instance) {
gInstanceName = instance;
if (gInstanceName.empty()) {
gInstanceName = "default";
}
healthd_mode_ops = &healthd_mode_service_2_0_ops;
LOG(INFO) << LOG_TAG << gInstanceName << ": Hal starting main loop...";
return healthd_main();
}

22
health/2.0/utils/libhealthservice/include/health2/service.h
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@ -1,22 +0,0 @@
/*
* Copyright 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_HARDWARE_HEALTH_V2_0_SERVICE_COMMON
#define ANDROID_HARDWARE_HEALTH_V2_0_SERVICE_COMMON
int health_service_main(const char* instance = "");
#endif // ANDROID_HARDWARE_HEALTH_V2_0_SERVICE_COMMON

38
health/2.0/utils/libhealthstoragedefault/Android.bp
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@ -1,38 +0,0 @@
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Default implementation for (passthrough) clients that statically links to
// android.hardware.health@2.0-impl but do no query for storage related
// information.
package {
// See: http://go/android-license-faq
// A large-scale-change added 'default_applicable_licenses' to import
// all of the 'license_kinds' from "hardware_interfaces_license"
// to get the below license kinds:
// SPDX-license-identifier-Apache-2.0
default_applicable_licenses: ["hardware_interfaces_license"],
}
cc_library_static {
srcs: ["StorageHealthDefault.cpp"],
name: "libhealthstoragedefault",
vendor_available: true,
recovery_available: true,
cflags: ["-Werror"],
shared_libs: [
"android.hardware.health@2.0",
],
}

24
health/2.0/utils/libhealthstoragedefault/StorageHealthDefault.cpp
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@ -1,24 +0,0 @@
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "include/StorageHealthDefault.h"
void get_storage_info(std::vector<struct StorageInfo>&) {
// Use defaults.
}
void get_disk_stats(std::vector<struct DiskStats>&) {
// Use defaults
}

34
health/2.0/utils/libhealthstoragedefault/include/StorageHealthDefault.h
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@ -1,34 +0,0 @@
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_HARDWARE_HEALTH_V2_0_STORAGE_HEALTH_H
#define ANDROID_HARDWARE_HEALTH_V2_0_STORAGE_HEALTH_H
#include <android/hardware/health/2.0/types.h>
using android::hardware::health::V2_0::StorageInfo;
using android::hardware::health::V2_0::DiskStats;
/*
* Get storage information.
*/
void get_storage_info(std::vector<struct StorageInfo>& info);
/*
* Get disk statistics.
*/
void get_disk_stats(std::vector<struct DiskStats>& stats);
#endif // ANDROID_HARDWARE_HEALTH_V2_0_STORAGE_HEALTH_H