ServiceBackedMeasureClient.kt
/*
* Copyright (C) 2021 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.
*/
package androidx.health.services.client.impl
import android.content.Context
import androidx.annotation.RestrictTo
import androidx.annotation.VisibleForTesting
import androidx.core.content.ContextCompat
import androidx.health.services.client.MeasureCallback
import androidx.health.services.client.MeasureClient
import androidx.health.services.client.data.DeltaDataType
import androidx.health.services.client.data.MeasureCapabilities
import androidx.health.services.client.impl.IpcConstants.MEASURE_API_BIND_ACTION
import androidx.health.services.client.impl.IpcConstants.SERVICE_PACKAGE_NAME
import androidx.health.services.client.impl.MeasureCallbackStub.MeasureCallbackCache
import androidx.health.services.client.impl.internal.HsConnectionManager
import androidx.health.services.client.impl.internal.StatusCallback
import androidx.health.services.client.impl.ipc.Client
import androidx.health.services.client.impl.ipc.ClientConfiguration
import androidx.health.services.client.impl.ipc.internal.ConnectionManager
import androidx.health.services.client.impl.request.CapabilitiesRequest
import androidx.health.services.client.impl.request.MeasureRegistrationRequest
import androidx.health.services.client.impl.request.MeasureUnregistrationRequest
import com.google.common.util.concurrent.FutureCallback
import com.google.common.util.concurrent.Futures
import com.google.common.util.concurrent.ListenableFuture
import com.google.common.util.concurrent.SettableFuture
import java.util.concurrent.Executor
/**
* [MeasureClient] implementation that is backed by Health Services.
*
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY)
@VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
public class ServiceBackedMeasureClient(
private val context: Context,
connectionManager: ConnectionManager = HsConnectionManager.getInstance(context)
) :
MeasureClient,
Client<IMeasureApiService>(
CLIENT_CONFIGURATION,
connectionManager,
{ binder -> IMeasureApiService.Stub.asInterface(binder) },
{ service -> service.apiVersion }
) {
override fun registerMeasureCallback(dataType: DeltaDataType<*, *>, callback: MeasureCallback) {
registerMeasureCallback(dataType, ContextCompat.getMainExecutor(context), callback)
}
override fun registerMeasureCallback(
dataType: DeltaDataType<*, *>,
executor: Executor,
callback: MeasureCallback
) {
val request = MeasureRegistrationRequest(context.packageName, dataType)
val callbackStub = MeasureCallbackCache.INSTANCE.getOrCreate(dataType, executor, callback)
val future =
registerListener(callbackStub.listenerKey) { service, result: SettableFuture<Void?> ->
service.registerCallback(
request,
callbackStub,
StatusCallback(result)
)
}
Futures.addCallback(
future,
object : FutureCallback<Void?> {
override fun onSuccess(result: Void?) {
callback.onRegistered()
}
override fun onFailure(t: Throwable) {
callback.onRegistrationFailed(t)
}
},
executor)
}
override fun unregisterMeasureCallbackAsync(
dataType: DeltaDataType<*, *>,
callback: MeasureCallback
): ListenableFuture<Void> {
val callbackStub =
MeasureCallbackCache.INSTANCE.remove(dataType, callback)
?: return Futures.immediateFailedFuture(
IllegalArgumentException("Given callback was not registered.")
)
val request = MeasureUnregistrationRequest(context.packageName, dataType)
return unregisterListener(callbackStub.listenerKey) { service, resultFuture ->
service.unregisterCallback(request, callbackStub, StatusCallback(resultFuture))
}
}
override fun getCapabilitiesAsync(): ListenableFuture<MeasureCapabilities> =
Futures.transform(
execute { service ->
service.getCapabilities(CapabilitiesRequest(context.packageName))
},
{ response -> response!!.measureCapabilities },
ContextCompat.getMainExecutor(context)
)
internal companion object {
internal const val CLIENT = "HealthServicesMeasureClient"
internal val CLIENT_CONFIGURATION =
ClientConfiguration(CLIENT, SERVICE_PACKAGE_NAME, MEASURE_API_BIND_ACTION)
}
}