1 files changed, 84 insertions, 0 deletions
diff --git a/java/com/android/dialer/backup/DialerPersistentBackupAgent.java b/java/com/android/dialer/backup/DialerPersistentBackupAgent.java
new file mode 100644
index 000000000..085c3433e
--- /dev/null
+++ b/java/com/android/dialer/backup/DialerPersistentBackupAgent.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2017 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 com.android.dialer.backup;
+
+import android.app.backup.BackupDataInput;
+import android.app.backup.BackupDataOutput;
+import android.os.ParcelFileDescriptor;
+import android.support.annotation.NonNull;
+import android.support.annotation.VisibleForTesting;
+import android.util.ArrayMap;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.LogUtil;
+import com.android.dialer.logging.DialerImpression;
+import com.android.dialer.logging.Logger;
+import com.google.android.libraries.backup.BackupKeyPredicate;
+import com.google.android.libraries.backup.BackupKeyPredicates;
+import com.google.android.libraries.backup.PersistentBackupAgentHelper;
+import java.io.IOException;
+import java.util.Map;
+
+/** Implementation of Key/Value Backup that powers Dialer's backup and restore. */
+public class DialerPersistentBackupAgent extends PersistentBackupAgentHelper {
+
+  private static final String DEFAULT_SHARED_PREFS_NAME = "com.google.android.dialer_preferences";
+
+  @NonNull private final String sharedPrefsName;
+
+  @VisibleForTesting(otherwise = VisibleForTesting.NONE)
+  DialerPersistentBackupAgent(@NonNull String sharedPreferenceName) {
+    this.sharedPrefsName = Assert.isNotNull(sharedPreferenceName);
+    Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_BACKUP_AGENT_CONSTRUCTOR);
+  }
+
+  public DialerPersistentBackupAgent() {
+    this(DEFAULT_SHARED_PREFS_NAME);
+  }
+
+  @Override
+  public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor stateFile)
+      throws IOException {
+    Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_ON_RESTORE);
+    LogUtil.i("DialerPersistentBackupAgent.onRestore", "restore from version: " + appVersionCode);
+    super.onRestore(data, appVersionCode, stateFile);
+  }
+
+  @Override
+  public void onBackup(
+      ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState)
+      throws IOException {
+    Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_ON_BACKUP);
+    LogUtil.i("DialerPersistentBackupAgent.onBackup", "onBackup being performed");
+    super.onBackup(oldState, data, newState);
+  }
+
+  @Override
+  public Map<String, BackupKeyPredicate> getBackupSpecification() {
+    Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_GET_BACKUP_SPECIFICATION);
+    LogUtil.i(
+        "DialerPersistentBackupAgent.getBackupSpecification",
+        "file being backed up: " + sharedPrefsName);
+    Map<String, BackupKeyPredicate> backupSpecification = new ArrayMap<>();
+    backupSpecification.put(sharedPrefsName, BackupKeyPredicates.alwaysTrue());
+    return backupSpecification;
+  }
+
+  @Override
+  public void onRestoreFinished() {
+    Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_ON_RESTORE_FINISHED);
+    super.onRestoreFinished();
+  }
+}