wahoo: health HAL 2.1

Bug: b/137790244
Test: lshal debug (health service)

Co-authored-by: Michael Bestas <mkbestas@lineageos.org>
Change-Id: Id15d203bd791d0867972da98f6998610723b9332

device.mk

@@ -188,7 +188,8 @@ PRODUCT_PACKAGES += \
 
 # health HAL
 PRODUCT_PACKAGES += \
-    android.hardware.health@2.0-service.wahoo
+    android.hardware.health@2.1-impl-wahoo \
+    android.hardware.health@2.1-service
 
 # Permissions
 # NOTE: Used to deal with permission issues caused by Gapps updates

health/Android.bp

@@ -13,13 +13,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-cc_binary {
-    name: "android.hardware.health@2.0-service.wahoo",
-    init_rc: ["android.hardware.health@2.0-service.wahoo.rc"],
+
+cc_library_shared {
+    name: "android.hardware.health@2.1-impl-wahoo",
+    stem: "android.hardware.health@2.0-impl-2.1-wahoo",
+
     proprietary: true,
     relative_install_path: "hw",
     srcs: [
-        "HealthService.cpp",
+        "Health.cpp",
         "CycleCountBackupRestore.cpp",
         "LearnedCapacityBackupRestore.cpp",
     ],
@@ -30,10 +32,10 @@ cc_binary {
     ],
 
     static_libs: [
-        "android.hardware.health@2.0-impl",
         "android.hardware.health@1.0-convert",
-        "libhealthservice",
         "libbatterymonitor",
+        "libhealth2impl",
+        "libhealthloop",
     ],
 
     shared_libs: [
@@ -42,7 +44,6 @@ cc_binary {
         "libhidlbase",
         "libutils",
         "android.hardware.health@2.0",
+        "android.hardware.health@2.1",
     ],
-
-    header_libs: ["libhealthd_headers"],
 }

health/Health.cpp

@@ -13,13 +13,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#define LOG_TAG "android.hardware.health@2.0-service.wahoo"
+#define LOG_TAG "android.hardware.health@2.1-impl-wahoo"
 #include <android-base/logging.h>
 
-#include <healthd/healthd.h>
-#include <health2/Health.h>
-#include <health2/service.h>
-#include <hidl/HidlTransportSupport.h>
+#include <android/hardware/health/2.0/types.h>
+#include <health2impl/Health.h>
+#include <health/utils.h>
+#include <hal_conversion.h>
 
 #include <android-base/file.h>
 #include <android-base/strings.h>
@@ -30,8 +30,17 @@
 #include "CycleCountBackupRestore.h"
 #include "LearnedCapacityBackupRestore.h"
 
-using android::hardware::health::V2_0::StorageInfo;
+namespace {
+
+using namespace std::literals;
+
+using android::hardware::health::V1_0::hal_conversion::convertFromHealthInfo;
+using android::hardware::health::V1_0::hal_conversion::convertToHealthInfo;
 using android::hardware::health::V2_0::DiskStats;
+using android::hardware::health::V2_0::StorageInfo;
+using android::hardware::health::V2_0::Result;
+using ::android::hardware::health::V2_1::IHealth;
+using android::hardware::health::InitHealthdConfig;
 using ::device::google::wahoo::health::CycleCountBackupRestore;
 using ::device::google::wahoo::health::LearnedCapacityBackupRestore;
 
@@ -64,15 +73,13 @@ int cycle_count_backup(int battery_level)
     return 0;
 }
 
-// See : hardware/interfaces/health/2.0/README
-
-void healthd_board_init(struct healthd_config*)
+void private_healthd_board_init(struct healthd_config*)
 {
     ccBackupRestore.Restore();
     lcBackupRestore.Restore();
 }
 
-int healthd_board_battery_update(struct android::BatteryProperties *props)
+int private_healthd_board_battery_update(struct android::BatteryProperties *props)
 {
     cycle_count_backup(props->batteryLevel);
     lcBackupRestore.Backup();
@@ -87,7 +94,7 @@ const char kUFSName[] = "UFS0";
 /*
  * Implementation based on system/core/storaged/storaged_info.cc
  */
-void get_storage_info(std::vector<StorageInfo>& vec_storage_info) {
+void private_get_storage_info(std::vector<StorageInfo>& vec_storage_info) {
     StorageInfo storage_info = {};
     std::string buffer, version;
 
@@ -147,7 +154,7 @@ void get_storage_info(std::vector<StorageInfo>& vec_storage_info) {
 /*
  * Implementation based on parse_disk_stats() in system/core/storaged_diskstats.cpp
  */
-void get_disk_stats(std::vector<DiskStats>& vec_stats) {
+void private_get_disk_stats(std::vector<DiskStats>& vec_stats) {
     const size_t kDiskStatsSize = 11;
     struct DiskStats stats = {};
 
@@ -172,7 +179,74 @@ void get_disk_stats(std::vector<DiskStats>& vec_stats) {
 
     return;
 }
+}  // anonymous namespace
 
-int main(void) {
-    return health_service_main();
+namespace android {
+namespace hardware {
+namespace health {
+namespace V2_1 {
+namespace implementation {
+class HealthImpl : public Health {
+ public:
+  HealthImpl(std::unique_ptr<healthd_config>&& config)
+    : Health(std::move(config)) {}
+
+  Return<void> getStorageInfo(getStorageInfo_cb _hidl_cb) override;
+  Return<void> getDiskStats(getDiskStats_cb _hidl_cb) override;
+
+ protected:
+  void UpdateHealthInfo(HealthInfo* health_info) override;
+
+};
+
+void HealthImpl::UpdateHealthInfo(HealthInfo* health_info) {
+  struct BatteryProperties props;
+  convertFromHealthInfo(health_info->legacy.legacy, &props);
+  private_healthd_board_battery_update(&props);
+  convertToHealthInfo(&props, health_info->legacy.legacy);
+}
+
+Return<void> HealthImpl::getStorageInfo(getStorageInfo_cb _hidl_cb)
+{
+  std::vector<struct StorageInfo> info;
+  private_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> HealthImpl::getDiskStats(getDiskStats_cb _hidl_cb)
+{
+  std::vector<struct DiskStats> stats;
+  private_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();
+}
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace health
+}  // namespace hardware
+}  // namespace android
+
+extern "C" IHealth* HIDL_FETCH_IHealth(const char* instance) {
+  using ::android::hardware::health::V2_1::implementation::HealthImpl;
+  if (instance != "default"sv) {
+      return nullptr;
+  }
+  auto config = std::make_unique<healthd_config>();
+  InitHealthdConfig(config.get());
+
+  private_healthd_board_init(config.get());
+
+  return new HealthImpl(std::move(config));
 }

health/android.hardware.health@2.0-service.wahoo.rc

@@ -1,5 +0,0 @@
-service vendor.health-hal-2-0 /vendor/bin/hw/android.hardware.health@2.0-service.wahoo
-    class hal
-    user system
-    group system
-    file /dev/kmsg w

manifest.xml

@@ -125,15 +125,6 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl">
-        <name>android.hardware.health</name>
-        <transport>hwbinder</transport>
-        <version>2.0</version>
-        <interface>
-            <name>IHealth</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <hal format="hidl">
         <name>android.hardware.keymaster</name>
         <transport>hwbinder</transport>