/*
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* Copyright (C) 2010 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;
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import android.content.Context;
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import android.os.Binder;
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import android.os.Environment;
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import android.os.IBinder;
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import android.os.IStoraged;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.os.StatFs;
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import android.os.SystemClock;
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import android.os.storage.StorageManager;
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import android.service.diskstats.DiskStatsAppSizesProto;
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import android.service.diskstats.DiskStatsCachedValuesProto;
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import android.service.diskstats.DiskStatsFreeSpaceProto;
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import android.service.diskstats.DiskStatsServiceDumpProto;
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import android.util.Log;
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import android.util.Slog;
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import android.util.proto.ProtoOutputStream;
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import com.android.internal.util.DumpUtils;
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import com.android.server.storage.DiskStatsFileLogger;
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import com.android.server.storage.DiskStatsLoggingService;
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import libcore.io.IoUtils;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.File;
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import java.io.FileDescriptor;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.PrintWriter;
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/**
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* This service exists only as a "dumpsys" target which reports
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* statistics about the status of the disk.
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*/
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public class DiskStatsService extends Binder {
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private static final String TAG = "DiskStatsService";
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private static final String DISKSTATS_DUMP_FILE = "/data/system/diskstats_cache.json";
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private final Context mContext;
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public DiskStatsService(Context context) {
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mContext = context;
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DiskStatsLoggingService.schedule(context);
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}
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@Override
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protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
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if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, TAG, pw)) return;
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// Run a quick-and-dirty performance test: write 512 bytes
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byte[] junk = new byte[512];
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for (int i = 0; i < junk.length; i++) junk[i] = (byte) i; // Write nonzero bytes
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File tmp = new File(Environment.getDataDirectory(), "system/perftest.tmp");
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FileOutputStream fos = null;
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IOException error = null;
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long before = SystemClock.uptimeMillis();
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try {
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fos = new FileOutputStream(tmp);
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fos.write(junk);
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} catch (IOException e) {
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error = e;
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} finally {
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try { if (fos != null) fos.close(); } catch (IOException e) {}
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}
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long after = SystemClock.uptimeMillis();
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if (tmp.exists()) tmp.delete();
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boolean protoFormat = hasOption(args, "--proto");
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ProtoOutputStream proto = null;
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if (protoFormat) {
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proto = new ProtoOutputStream(fd);
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pw = null;
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proto.write(DiskStatsServiceDumpProto.HAS_TEST_ERROR, error != null);
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if (error != null) {
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proto.write(DiskStatsServiceDumpProto.ERROR_MESSAGE, error.toString());
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} else {
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proto.write(DiskStatsServiceDumpProto.WRITE_512B_LATENCY_MILLIS, after - before);
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}
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} else {
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if (error != null) {
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pw.print("Test-Error: ");
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pw.println(error.toString());
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} else {
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pw.print("Latency: ");
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pw.print(after - before);
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pw.println("ms [512B Data Write]");
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}
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}
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if (protoFormat) {
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reportDiskWriteSpeedProto(proto);
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} else {
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reportDiskWriteSpeed(pw);
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}
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reportFreeSpace(Environment.getDataDirectory(), "Data", pw, proto,
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DiskStatsFreeSpaceProto.FOLDER_DATA);
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reportFreeSpace(Environment.getDownloadCacheDirectory(), "Cache", pw, proto,
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DiskStatsFreeSpaceProto.FOLDER_CACHE);
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reportFreeSpace(new File("/system"), "System", pw, proto,
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DiskStatsFreeSpaceProto.FOLDER_SYSTEM);
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boolean fileBased = StorageManager.isFileEncryptedNativeOnly();
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boolean blockBased = fileBased ? false : StorageManager.isBlockEncrypted();
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if (protoFormat) {
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if (fileBased) {
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proto.write(DiskStatsServiceDumpProto.ENCRYPTION,
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DiskStatsServiceDumpProto.ENCRYPTION_FILE_BASED);
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} else if (blockBased) {
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proto.write(DiskStatsServiceDumpProto.ENCRYPTION,
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DiskStatsServiceDumpProto.ENCRYPTION_FULL_DISK);
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} else {
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proto.write(DiskStatsServiceDumpProto.ENCRYPTION,
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DiskStatsServiceDumpProto.ENCRYPTION_NONE);
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}
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} else if (fileBased) {
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pw.println("File-based Encryption: true");
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}
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if (protoFormat) {
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reportCachedValuesProto(proto);
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} else {
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reportCachedValues(pw);
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}
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if (protoFormat) {
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proto.flush();
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}
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// TODO: Read /proc/yaffs and report interesting values;
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// add configurable (through args) performance test parameters.
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}
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private void reportFreeSpace(File path, String name, PrintWriter pw,
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ProtoOutputStream proto, int folderType) {
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try {
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StatFs statfs = new StatFs(path.getPath());
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long bsize = statfs.getBlockSize();
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long avail = statfs.getAvailableBlocks();
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long total = statfs.getBlockCount();
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if (bsize <= 0 || total <= 0) {
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throw new IllegalArgumentException(
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"Invalid stat: bsize=" + bsize + " avail=" + avail + " total=" + total);
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}
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if (proto != null) {
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long freeSpaceToken = proto.start(DiskStatsServiceDumpProto.PARTITIONS_FREE_SPACE);
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proto.write(DiskStatsFreeSpaceProto.FOLDER, folderType);
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proto.write(DiskStatsFreeSpaceProto.AVAILABLE_SPACE_KB, avail * bsize / 1024);
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proto.write(DiskStatsFreeSpaceProto.TOTAL_SPACE_KB, total * bsize / 1024);
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proto.end(freeSpaceToken);
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} else {
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pw.print(name);
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pw.print("-Free: ");
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pw.print(avail * bsize / 1024);
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pw.print("K / ");
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pw.print(total * bsize / 1024);
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pw.print("K total = ");
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pw.print(avail * 100 / total);
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pw.println("% free");
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}
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} catch (IllegalArgumentException e) {
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if (proto != null) {
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// Empty proto
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} else {
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pw.print(name);
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pw.print("-Error: ");
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pw.println(e.toString());
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}
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return;
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}
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}
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private boolean hasOption(String[] args, String arg) {
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for (String opt : args) {
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if (arg.equals(opt)) {
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return true;
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}
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}
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return false;
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}
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// If you change this method, make sure to modify the Proto version of this method as well.
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private void reportCachedValues(PrintWriter pw) {
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try {
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String jsonString = IoUtils.readFileAsString(DISKSTATS_DUMP_FILE);
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JSONObject json = new JSONObject(jsonString);
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pw.print("App Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.APP_SIZE_AGG_KEY));
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pw.print("App Data Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.APP_DATA_SIZE_AGG_KEY));
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pw.print("App Cache Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.APP_CACHE_AGG_KEY));
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pw.print("Photos Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.PHOTOS_KEY));
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pw.print("Videos Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.VIDEOS_KEY));
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pw.print("Audio Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.AUDIO_KEY));
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pw.print("Downloads Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.DOWNLOADS_KEY));
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pw.print("System Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.SYSTEM_KEY));
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pw.print("Other Size: ");
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pw.println(json.getLong(DiskStatsFileLogger.MISC_KEY));
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pw.print("Package Names: ");
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pw.println(json.getJSONArray(DiskStatsFileLogger.PACKAGE_NAMES_KEY));
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pw.print("App Sizes: ");
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pw.println(json.getJSONArray(DiskStatsFileLogger.APP_SIZES_KEY));
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pw.print("App Data Sizes: ");
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pw.println(json.getJSONArray(DiskStatsFileLogger.APP_DATA_KEY));
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pw.print("Cache Sizes: ");
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pw.println(json.getJSONArray(DiskStatsFileLogger.APP_CACHES_KEY));
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} catch (IOException | JSONException e) {
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Log.w(TAG, "exception reading diskstats cache file", e);
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}
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}
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private void reportCachedValuesProto(ProtoOutputStream proto) {
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try {
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String jsonString = IoUtils.readFileAsString(DISKSTATS_DUMP_FILE);
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JSONObject json = new JSONObject(jsonString);
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long cachedValuesToken = proto.start(DiskStatsServiceDumpProto.CACHED_FOLDER_SIZES);
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proto.write(DiskStatsCachedValuesProto.AGG_APPS_SIZE_KB,
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json.getLong(DiskStatsFileLogger.APP_SIZE_AGG_KEY));
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proto.write(DiskStatsCachedValuesProto.AGG_APPS_DATA_SIZE_KB,
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json.getLong(DiskStatsFileLogger.APP_DATA_SIZE_AGG_KEY));
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proto.write(DiskStatsCachedValuesProto.AGG_APPS_CACHE_SIZE_KB,
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json.getLong(DiskStatsFileLogger.APP_CACHE_AGG_KEY));
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proto.write(DiskStatsCachedValuesProto.PHOTOS_SIZE_KB,
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json.getLong(DiskStatsFileLogger.PHOTOS_KEY));
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proto.write(DiskStatsCachedValuesProto.VIDEOS_SIZE_KB,
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json.getLong(DiskStatsFileLogger.VIDEOS_KEY));
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proto.write(DiskStatsCachedValuesProto.AUDIO_SIZE_KB,
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json.getLong(DiskStatsFileLogger.AUDIO_KEY));
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proto.write(DiskStatsCachedValuesProto.DOWNLOADS_SIZE_KB,
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json.getLong(DiskStatsFileLogger.DOWNLOADS_KEY));
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proto.write(DiskStatsCachedValuesProto.SYSTEM_SIZE_KB,
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json.getLong(DiskStatsFileLogger.SYSTEM_KEY));
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proto.write(DiskStatsCachedValuesProto.OTHER_SIZE_KB,
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json.getLong(DiskStatsFileLogger.MISC_KEY));
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JSONArray packageNamesArray = json.getJSONArray(DiskStatsFileLogger.PACKAGE_NAMES_KEY);
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JSONArray appSizesArray = json.getJSONArray(DiskStatsFileLogger.APP_SIZES_KEY);
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JSONArray appDataSizesArray = json.getJSONArray(DiskStatsFileLogger.APP_DATA_KEY);
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JSONArray cacheSizesArray = json.getJSONArray(DiskStatsFileLogger.APP_CACHES_KEY);
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final int len = packageNamesArray.length();
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if (len == appSizesArray.length()
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&& len == appDataSizesArray.length()
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&& len == cacheSizesArray.length()) {
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for (int i = 0; i < len; i++) {
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long packageToken = proto.start(DiskStatsCachedValuesProto.APP_SIZES);
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proto.write(DiskStatsAppSizesProto.PACKAGE_NAME,
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packageNamesArray.getString(i));
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proto.write(DiskStatsAppSizesProto.APP_SIZE_KB, appSizesArray.getLong(i));
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proto.write(DiskStatsAppSizesProto.APP_DATA_SIZE_KB, appDataSizesArray.getLong(i));
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proto.write(DiskStatsAppSizesProto.CACHE_SIZE_KB, cacheSizesArray.getLong(i));
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proto.end(packageToken);
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}
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} else {
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Slog.wtf(TAG, "Sizes of packageNamesArray, appSizesArray, appDataSizesArray "
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+ " and cacheSizesArray are not the same");
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}
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proto.end(cachedValuesToken);
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} catch (IOException | JSONException e) {
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Log.w(TAG, "exception reading diskstats cache file", e);
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}
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}
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private int getRecentPerf() throws RemoteException, IllegalStateException {
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IBinder binder = ServiceManager.getService("storaged");
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if (binder == null) throw new IllegalStateException("storaged not found");
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IStoraged storaged = IStoraged.Stub.asInterface(binder);
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return storaged.getRecentPerf();
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}
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// Keep reportDiskWriteSpeed and reportDiskWriteSpeedProto in sync
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private void reportDiskWriteSpeed(PrintWriter pw) {
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try {
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long perf = getRecentPerf();
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if (perf != 0) {
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pw.print("Recent Disk Write Speed (kB/s) = ");
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pw.println(perf);
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} else {
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pw.println("Recent Disk Write Speed data unavailable");
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Log.w(TAG, "Recent Disk Write Speed data unavailable!");
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}
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} catch (RemoteException | IllegalStateException e) {
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pw.println(e.toString());
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Log.e(TAG, e.toString());
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}
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}
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private void reportDiskWriteSpeedProto(ProtoOutputStream proto) {
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try {
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long perf = getRecentPerf();
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if (perf != 0) {
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proto.write(DiskStatsServiceDumpProto.BENCHMARKED_WRITE_SPEED_KBPS, perf);
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} else {
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Log.w(TAG, "Recent Disk Write Speed data unavailable!");
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}
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} catch (RemoteException | IllegalStateException e) {
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Log.e(TAG, e.toString());
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}
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}
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}
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