Add BugReportContentProvider to support new battery usage architecture.

Test: make RunSettingsRoboTests + manually
Bug: 256123932
Change-Id: I8cc48f5c66e5cbd958bdd73ff8e7d6e555bd9c3b

src/com/android/settings/fuelgauge/batteryusage/bugreport/BugReportContentProvider.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2022 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.bugreport;
+
+import android.content.ContentProvider;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.util.Log;
+
+import com.android.settings.fuelgauge.batteryusage.DatabaseUtils;
+
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
+
+/** Provides debug information in the bugreports when device is dumpping. */
+public final class BugReportContentProvider extends ContentProvider {
+    private static final String TAG = "BugReportContentProvider";
+
+    @Override
+    public boolean onCreate() {
+        return true;
+    }
+
+    @Override
+    public void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
+        final Context context = getContext();
+        if (context == null) {
+            Log.w(TAG, "failed to dump BatteryUsage state: null context");
+            return;
+        }
+        if (DatabaseUtils.isWorkProfile(context)) {
+            Log.w(TAG, "ignore battery usage states dump in the work profile");
+            return;
+        }
+        writer.println("dump BatteryUsage states:");
+        LogUtils.dumpUsageDatabaseHist(context, writer);
+    }
+
+    @Override
+    public Cursor query(
+            Uri uri,
+            String[] projection,
+            String selection,
+            String[] selectionArgs,
+            String sortOrder) {
+        throw new UnsupportedOperationException("unsupported!");
+    }
+
+    @Override
+    public String getType(Uri uri) {
+        throw new UnsupportedOperationException("unsupported!");
+    }
+
+    @Override
+    public Uri insert(Uri uri, ContentValues values) {
+        throw new UnsupportedOperationException("unsupported!");
+    }
+
+    @Override
+    public int delete(Uri uri, String selection, String[] selectionArgs) {
+        throw new UnsupportedOperationException("unsupported!");
+    }
+
+    @Override
+    public int update(
+            Uri uri,
+            ContentValues values,
+            String selection,
+            String[] selectionArgs) {
+        throw new UnsupportedOperationException("unsupported!");
+    }
+}

src/com/android/settings/fuelgauge/batteryusage/bugreport/LogUtils.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2022 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.bugreport;
+
+import android.content.Context;
+import android.util.Log;
+
+import com.android.settings.fuelgauge.batteryusage.db.BatteryState;
+import com.android.settings.fuelgauge.batteryusage.db.BatteryStateDao;
+import com.android.settings.fuelgauge.batteryusage.db.BatteryStateDatabase;
+
+import java.io.PrintWriter;
+import java.text.SimpleDateFormat;
+import java.time.Clock;
+import java.time.Duration;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+/** A utility class to aggregate and provide required log data. */
+public final class LogUtils {
+    private static final String TAG = "LogUtils";
+    private static final Duration DUMP_TIME_OFFSET = Duration.ofHours(24);
+    private static final Duration DUMP_TIME_OFFSET_FOR_ENTRY = Duration.ofHours(4);
+
+    @SuppressWarnings("JavaUtilDate")
+    static void dumpUsageDatabaseHist(Context context, PrintWriter writer) {
+        final BatteryStateDao dao =
+                BatteryStateDatabase
+                        .getInstance(context.getApplicationContext())
+                        .batteryStateDao();
+        final long timeOffset =
+                Clock.systemUTC().millis() - DUMP_TIME_OFFSET.toMillis();
+        // Gets all distinct timestamps.
+        final List<Long> timestamps = dao.getDistinctTimestamps(timeOffset);
+        final int distinctCount = timestamps.size();
+        writer.println("\n\tDatabaseHistory:");
+        writer.println("distinct timestamp count:" + distinctCount);
+        Log.w(TAG, "distinct timestamp count:" + distinctCount);
+        if (distinctCount == 0) {
+            return;
+        }
+        // Dumps all distinct timestamps.
+        final SimpleDateFormat formatter =
+                new SimpleDateFormat("MMM dd, HH:mm:ss", Locale.US);
+        timestamps.forEach(timestamp -> {
+            final String formattedTimestamp = formatter.format(new Date(timestamp));
+            writer.println("\t" + formattedTimestamp);
+            Log.w(TAG, "\t" + formattedTimestamp);
+        });
+
+        final List<BatteryState> stateList = dao.getAllAfter(
+                Clock.systemUTC().millis() - DUMP_TIME_OFFSET_FOR_ENTRY.toMillis());
+        stateList.stream().forEach(state -> writer.println(state));
+    }
+
+    private LogUtils() {}
+}