Merge "Implement Dialer K/V Backup and Restore."

3 files changed, 106 insertions, 0 deletions

diff --git a/Android.mk b/Android.mk
index ff7b0a38e..140b41fe8 100644
--- a/Android.mk
+++ b/Android.mk
@@ -80,6 +80,13 @@ LOCAL_FULL_LIBS_MANIFEST_FILES := \
 LOCAL_SRC_FILES := $(call all-java-files-under, $(SRC_DIRS))
 LOCAL_SRC_FILES := $(filter-out $(EXCLUDE_FILES),$(LOCAL_SRC_FILES))
 LOCAL_SRC_FILES += $(call all-proto-files-under, $(SRC_DIRS))
+
+# Backup Library
+BACKUP_LIB_SRC_DIR := ../../../external/libbackup/src/com/google/android/libraries/backup
+EXCLUDE_BACKUP_LIB_SRCS := $(call all-java-files-under, $(BACKUP_LIB_SRC_DIR)/shadow)
+LOCAL_SRC_FILES += $(call all-java-files-under, $(BACKUP_LIB_SRC_DIR))
+LOCAL_SRC_FILES := $(filter-out $(EXCLUDE_BACKUP_LIB_SRCS),$(LOCAL_SRC_FILES))
+
 LOCAL_PROTOC_FLAGS := --proto_path=$(LOCAL_PATH)
 
 LOCAL_RESOURCE_DIR := $(addprefix $(LOCAL_PATH)/, $(RES_DIRS))
@@ -204,6 +211,8 @@ PROCESSOR_LIBRARIES_TARGET :=
 PROCESSOR_JARS :=
 EXCLUDE_MANIFESTS :=
 EXCLUDE_EXTRA_PACKAGES :=
+BACKUP_LIB_SRC_DIR :=
+EXCLUDE_BACKUP_LIB_SRCS :=
 
 # Create references to prebuilt libraries.
 include $(CLEAR_VARS)
diff --git a/java/com/android/dialer/backup/AndroidManifest.xml b/java/com/android/dialer/backup/AndroidManifest.xml
new file mode 100644
index 000000000..84992c0ee
--- /dev/null
+++ b/java/com/android/dialer/backup/AndroidManifest.xml
@@ -0,0 +1,25 @@
+<!--
+ ~ 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
+ -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.dialer.backup">
+
+
+  <!-- Android backup service key -->
+  <!-- https://developer.android.com/google/backup/signup.html -->
+  <meta-data
+      android:name="com.google.android.backup.api_key"
+      android:value="AEdPqrEAAAAIn3-Y3JKit1mrzfvcdbVhUiJn2ICtKfhGYLy0Bg"/>
+</manifest>
\ No newline at end of file
diff --git a/java/com/android/dialer/backup/DialerPersistentBackupAgent.java b/java/com/android/dialer/backup/DialerPersistentBackupAgent.java
new file mode 100644
index 000000000..dfe4ea301
--- /dev/null
+++ b/java/com/android/dialer/backup/DialerPersistentBackupAgent.java
@@ -0,0 +1,72 @@
+/*
+ * 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.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);
+  }
+
+  public DialerPersistentBackupAgent() {
+    this(DEFAULT_SHARED_PREFS_NAME);
+  }
+
+  @Override
+  public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor stateFile)
+      throws IOException {
+    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 {
+    LogUtil.i("DialerPersistentBackupAgent.onBackup", "onBackup being performed");
+    super.onBackup(oldState, data, newState);
+  }
+
+  @Override
+  public Map<String, BackupKeyPredicate> getBackupSpecification() {
+    LogUtil.i(
+        "DialerPersistentBackupAgent.getBackupSpecification",
+        "file being backed up: " + sharedPrefsName);
+    Map<String, BackupKeyPredicate> backupSpecification = new ArrayMap<>();
+    backupSpecification.put(sharedPrefsName, BackupKeyPredicates.alwaysTrue());
+    return backupSpecification;
+  }
+}