| /* |
| * Copyright (C) 2023 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 android.ondevicepersonalization; |
| |
| import android.annotation.NonNull; |
| import android.ondevicepersonalization.aidl.IDataAccessService; |
| import android.ondevicepersonalization.aidl.IDataAccessServiceCallback; |
| import android.os.Bundle; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.ArrayBlockingQueue; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| /** @hide */ |
| public class LocalDataImpl implements MutableMap { |
| private static final String TAG = "LocalDataImpl"; |
| @NonNull |
| IDataAccessService mDataAccessService; |
| |
| private static final long ASYNC_TIMEOUT_MS = 1000; |
| |
| public LocalDataImpl(@NonNull IDataAccessService binder) { |
| mDataAccessService = Objects.requireNonNull(binder); |
| } |
| |
| @Override |
| public byte[] get(@NonNull String key) throws OnDevicePersonalizationException { |
| Bundle params = new Bundle(); |
| params.putStringArray(Constants.EXTRA_LOOKUP_KEYS, new String[]{key}); |
| return handleLookupRequest(Constants.DATA_ACCESS_OP_LOCAL_DATA_LOOKUP, key, params); |
| } |
| |
| @Override |
| public byte[] put(@NonNull String key, byte[] value) throws OnDevicePersonalizationException { |
| Bundle params = new Bundle(); |
| params.putStringArray(Constants.EXTRA_LOOKUP_KEYS, new String[]{key}); |
| params.putByteArray(Constants.EXTRA_VALUE, value); |
| return handleLookupRequest(Constants.DATA_ACCESS_OP_LOCAL_DATA_PUT, key, params); |
| } |
| |
| @Override |
| public byte[] remove(@NonNull String key) throws OnDevicePersonalizationException { |
| Bundle params = new Bundle(); |
| params.putStringArray(Constants.EXTRA_LOOKUP_KEYS, new String[]{key}); |
| return handleLookupRequest(Constants.DATA_ACCESS_OP_LOCAL_DATA_REMOVE, key, params); |
| } |
| |
| private byte[] handleLookupRequest(int op, String key, Bundle params) |
| throws OnDevicePersonalizationException { |
| Bundle result = handleAsyncRequest(op, params); |
| if (null == result) { |
| Log.e(TAG, "Timed out waiting for result of lookup for op: " + op); |
| throw new OnDevicePersonalizationException(Constants.STATUS_INTERNAL_ERROR); |
| } |
| HashMap<String, byte[]> data = result.getSerializable( |
| Constants.EXTRA_RESULT, HashMap.class); |
| if (null == data) { |
| Log.e(TAG, "No EXTRA_RESULT was present in bundle"); |
| throw new OnDevicePersonalizationException(Constants.STATUS_INTERNAL_ERROR); |
| } |
| return data.get(key); |
| } |
| |
| @Override |
| public Set<String> keySet() throws OnDevicePersonalizationException { |
| Bundle result = handleAsyncRequest(Constants.DATA_ACCESS_OP_LOCAL_DATA_KEYSET, |
| Bundle.EMPTY); |
| if (null == result) { |
| Log.e(TAG, "Timed out waiting for result of keySet"); |
| throw new OnDevicePersonalizationException(Constants.STATUS_INTERNAL_ERROR); |
| } |
| HashSet<String> resultSet = |
| result.getSerializable(Constants.EXTRA_RESULT, HashSet.class); |
| if (null == resultSet) { |
| Log.e(TAG, "No EXTRA_RESULT was present in bundle"); |
| throw new OnDevicePersonalizationException(Constants.STATUS_INTERNAL_ERROR); |
| } |
| return resultSet; |
| } |
| |
| private Bundle handleAsyncRequest(int op, Bundle params) |
| throws OnDevicePersonalizationException { |
| try { |
| BlockingQueue<Bundle> asyncResult = new ArrayBlockingQueue<>(1); |
| mDataAccessService.onRequest( |
| op, |
| params, |
| new IDataAccessServiceCallback.Stub() { |
| @Override |
| public void onSuccess(@NonNull Bundle result) { |
| asyncResult.add(result); |
| } |
| |
| @Override |
| public void onError(int errorCode) { |
| asyncResult.add(Bundle.EMPTY); |
| } |
| }); |
| return asyncResult.poll(ASYNC_TIMEOUT_MS, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException | RemoteException e) { |
| Log.e(TAG, "Failed to retrieve result from localData", e); |
| throw new OnDevicePersonalizationException(Constants.STATUS_INTERNAL_ERROR); |
| } |
| } |
| } |