PassiveListenerCallbackStub.kt
/*
* Copyright (C) 2022 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.PassiveListenerCallback
import androidx.health.services.client.impl.event.PassiveListenerEvent
import androidx.health.services.client.impl.ipc.internal.ListenerKey
import androidx.health.services.client.impl.response.HealthEventResponse
import androidx.health.services.client.impl.response.PassiveMonitoringGoalResponse
import androidx.health.services.client.impl.response.PassiveMonitoringUpdateResponse
import androidx.health.services.client.proto.EventsProto
import androidx.health.services.client.proto.EventsProto.PassiveListenerEvent.EventCase.EVENT_NOT_SET
import androidx.health.services.client.proto.EventsProto.PassiveListenerEvent.EventCase.HEALTH_EVENT_RESPONSE
import androidx.health.services.client.proto.EventsProto.PassiveListenerEvent.EventCase.PASSIVE_GOAL_RESPONSE
import androidx.health.services.client.proto.EventsProto.PassiveListenerEvent.EventCase.PASSIVE_UPDATE_RESPONSE
import androidx.health.services.client.proto.EventsProto.PassiveListenerEvent.EventCase.PERMISSION_LOST_RESPONSE
import java.util.concurrent.Executor
/** A stub implementation for IPassiveListenerCallback. */
internal class PassiveListenerCallbackStub(
private val packageName: String,
private val executor: Executor,
private val callback: PassiveListenerCallback
) : IPassiveListenerCallback.Stub() {
public val listenerKey: ListenerKey = ListenerKey(packageName)
override fun onPassiveListenerEvent(event: PassiveListenerEvent) {
executor.execute { triggerListener(event.proto) }
}
private fun triggerListener(proto: EventsProto.PassiveListenerEvent) {
when (proto.eventCase) {
PASSIVE_UPDATE_RESPONSE -> {
val response = PassiveMonitoringUpdateResponse(proto.passiveUpdateResponse)
if (response.passiveMonitoringUpdate.dataPoints.dataPoints.isNotEmpty()) {
callback.onNewDataPointsReceived(response.passiveMonitoringUpdate.dataPoints)
}
for (userActivityInfo in response.passiveMonitoringUpdate.userActivityInfoUpdates) {
callback.onUserActivityInfoReceived(userActivityInfo)
}
}
PASSIVE_GOAL_RESPONSE -> {
val response = PassiveMonitoringGoalResponse(proto.passiveGoalResponse)
callback.onGoalCompleted(response.passiveGoal)
}
HEALTH_EVENT_RESPONSE -> {
val response = HealthEventResponse(proto.healthEventResponse)
callback.onHealthEventReceived(response.healthEvent)
}
PERMISSION_LOST_RESPONSE -> {
callback.onPermissionLost()
}
null, EVENT_NOT_SET -> Log.w(TAG, "Received unknown event ${proto.eventCase}")
}
}
/**
* Clients can only have one {@link PassiveListenerCallbackStub} registered at a time. Hold onto
* the last one that is registered.
*
* Note: For PassiveListenerCallback, the {@link ListenerKey} held in the stub is the important
* bit that is used, not the stub object itself.
*/
internal class PassiveListenerCallbackCache private constructor() {
private val listenerLock = Any()
@GuardedBy("listenerLock")
private var listener: PassiveListenerCallbackStub? = null
public fun create(
packageName: String,
executor: Executor,
callback: PassiveListenerCallback
): PassiveListenerCallbackStub {
synchronized(listenerLock) {
val stub = PassiveListenerCallbackStub(packageName, executor, callback)
listener = stub
return stub
}
}
public fun clear(): PassiveListenerCallbackStub? {
synchronized(listenerLock) {
val prev: PassiveListenerCallbackStub? = listener
listener = null
return prev
}
}
public companion object {
@JvmField
public val INSTANCE: PassiveListenerCallbackCache = PassiveListenerCallbackCache()
}
}
private companion object {
const val TAG = "PassiveListenerCallbackStub"
}
}