Add new database table and proto for battery usage reattribution (2/5)

Bug: 346706894
Test: atest SettingsRoboTests:com.android.settings.fuelgauge.batteryusage
Flag: EXEMPT bug fix
Change-Id: If360246d974abdea7004023aedcf1a4be7b63633

src/com/android/settings/fuelgauge/batteryusage/db/BatteryReattributeEntity.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2024 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.settings.fuelgauge.batteryusage.db;
+
+import static com.android.settings.fuelgauge.batteryusage.ConvertUtils.utcToLocalTimeForLogging;
+
+import com.android.settings.fuelgauge.batteryusage.BatteryReattribute;
+import com.android.settings.fuelgauge.batteryusage.ConvertUtils;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+import androidx.room.Entity;
+import androidx.room.PrimaryKey;
+
+/** A {@link Entity} for battery usage reattribution data in the database. */
+@Entity
+public class BatteryReattributeEntity {
+
+    /** The start timestamp of this record data. */
+    @PrimaryKey
+    public final long timestampStart;
+
+    /** The end timestamp of this record data. */
+    public final long timestampEnd;
+
+    /** The battery usage reattribution data for corresponding  uids. */
+    public final String reattributeData;
+
+    public BatteryReattributeEntity(@NonNull BatteryReattribute batteryReattribute) {
+        this(
+                batteryReattribute.getTimestampStart(),
+                batteryReattribute.getTimestampEnd(),
+                ConvertUtils.encodeBatteryReattribute(batteryReattribute));
+    }
+
+    @VisibleForTesting
+    BatteryReattributeEntity(
+            long timestampStart, long timestampEnd, @NonNull String reattributeData) {
+        this.timestampStart = timestampStart;
+        this.timestampEnd = timestampEnd;
+        this.reattributeData = reattributeData;
+    }
+
+    @NonNull
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder()
+                .append("\nBatteryReattributeEntity{")
+                .append("\n\t" + utcToLocalTimeForLogging(timestampStart))
+                .append("\n\t" + utcToLocalTimeForLogging(timestampEnd))
+                .append("\n}");
+        return builder.toString();
+    }
+}