77 lines
2.5 KiB
Java
77 lines
2.5 KiB
Java
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.backup;
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import android.annotation.UserIdInt;
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import android.app.backup.BlobBackupHelper;
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import android.companion.ICompanionDeviceManager;
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import android.content.Context;
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import android.os.ServiceManager;
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import android.util.Slog;
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/**
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* CDM backup and restore helper.
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*/
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public class CompanionBackupHelper extends BlobBackupHelper {
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private static final String TAG = "CompanionBackupHelper";
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// current schema of the backup state blob
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private static final int BLOB_VERSION = 1;
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// key under which the CDM data blob is committed to back up
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private static final String KEY_COMPANION = "companion";
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@UserIdInt
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private final int mUserId;
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public CompanionBackupHelper(int userId) {
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super(BLOB_VERSION, KEY_COMPANION);
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mUserId = userId;
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}
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@Override
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protected byte[] getBackupPayload(String key) {
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byte[] payload = null;
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if (KEY_COMPANION.equals(key)) {
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try {
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ICompanionDeviceManager cdm = ICompanionDeviceManager.Stub.asInterface(
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ServiceManager.getService(Context.COMPANION_DEVICE_SERVICE));
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payload = cdm.getBackupPayload(mUserId);
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} catch (Exception e) {
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Slog.e(TAG, "Error getting backup from CompanionDeviceManager.", e);
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}
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}
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return payload;
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}
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@Override
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protected void applyRestoredPayload(String key, byte[] payload) {
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Slog.i(TAG, "Got companion backup data.");
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if (KEY_COMPANION.equals(key)) {
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try {
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ICompanionDeviceManager cdm = ICompanionDeviceManager.Stub.asInterface(
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ServiceManager.getService(Context.COMPANION_DEVICE_SERVICE));
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cdm.applyRestoredPayload(payload, mUserId);
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} catch (Exception e) {
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Slog.e(TAG, "Error applying restored payload to CompanionDeviceManager.", e);
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}
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}
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}
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}
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