ExerciseUpdateListenerStub.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.util.Log
import androidx.annotation.GuardedBy
import androidx.health.services.client.ExerciseUpdateCallback
import androidx.health.services.client.data.Availability
import androidx.health.services.client.data.DataType
import androidx.health.services.client.data.ExerciseEvent
import androidx.health.services.client.data.ExerciseLapSummary
import androidx.health.services.client.data.ExerciseUpdate
import androidx.health.services.client.impl.event.ExerciseUpdateListenerEvent
import androidx.health.services.client.impl.ipc.internal.ListenerKey
import androidx.health.services.client.proto.EventsProto
import androidx.health.services.client.proto.EventsProto.ExerciseUpdateListenerEvent.EventCase
import java.util.HashMap
import java.util.concurrent.Executor
/** A stub implementation for IExerciseUpdateListener. */
internal class ExerciseUpdateListenerStub internal constructor(
private val listener: ExerciseUpdateCallback,
private val executor: Executor,
private val requestedDataTypesProvider: () -> Set<DataType<*, *>>
) : IExerciseUpdateListener.Stub() {
public val listenerKey: ListenerKey = ListenerKey(listener)
override fun onExerciseUpdateListenerEvent(event: ExerciseUpdateListenerEvent) {
executor.execute { triggerListener(event.proto) }
}
private fun triggerListener(proto: EventsProto.ExerciseUpdateListenerEvent) {
when (proto.eventCase) {
EventCase.EXERCISE_UPDATE_RESPONSE ->
listener.onExerciseUpdateReceived(
ExerciseUpdate(proto.exerciseUpdateResponse.exerciseUpdate)
)
EventCase.LAP_SUMMARY_RESPONSE ->
listener.onLapSummaryReceived(
ExerciseLapSummary(proto.lapSummaryResponse.lapSummary)
)
EventCase.AVAILABILITY_RESPONSE -> {
val requestedDataTypes = requestedDataTypesProvider.invoke()
if (requestedDataTypes.isEmpty()) {
Log.w(TAG, "Availability received without any requested DataTypes")
return
}
// The DataType in the Availability Response could be a delta or aggregate; there's
// not enough information to distinguish. For example, the developer might have
// requested ether or both of HEART_RATE_BPM / HEART_RATE_BPM_STATS. We should
// trigger onAvailabilityChanged for all matching data types.
val matchingDataTypes = requestedDataTypes.filter {
it.name == proto.availabilityResponse.dataType.name
}
val availability = Availability.fromProto(proto.availabilityResponse.availability)
matchingDataTypes.forEach { listener.onAvailabilityChanged(it, availability) }
}
EventCase.EXERCISE_EVENT_RESPONSE ->
listener
.onExerciseEventReceived(
ExerciseEvent.fromProto(
proto.exerciseEventResponse.exerciseEvent))
null,
EventCase.EVENT_NOT_SET -> Log.w(TAG, "Received unknown event ${proto.eventCase}")
}
}
/**
* A class that stores unique active instances of [ExerciseUpdateCallback] to ensure same binder
* object is passed by framework to service side of the IPC.
*/
public class ExerciseUpdateListenerCache private constructor() {
private val listenerLock = Any()
@GuardedBy("listenerLock")
private val listeners: MutableMap<ExerciseUpdateCallback, ExerciseUpdateListenerStub> =
HashMap()
public fun getOrCreate(
listener: ExerciseUpdateCallback,
executor: Executor,
requestedDataTypesProvider: () -> Set<DataType<*, *>>
): ExerciseUpdateListenerStub {
synchronized(listenerLock) {
return listeners.getOrPut(listener) {
ExerciseUpdateListenerStub(listener, executor, requestedDataTypesProvider)
}
}
}
public fun remove(
exerciseUpdateCallback: ExerciseUpdateCallback
): ExerciseUpdateListenerStub? {
synchronized(listenerLock) {
return listeners.remove(exerciseUpdateCallback)
}
}
public companion object {
@JvmField
public val INSTANCE: ExerciseUpdateListenerCache = ExerciseUpdateListenerCache()
}
}
private companion object {
val TAG = "ExerciseUpdateListener"
}
}