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Commit a9d86027 authored by Daniel Nishi's avatar Daniel Nishi Committed by android-build-merger
Browse files

Add a file collector to the platform. 

am: be770dce

Change-Id: I2b908b6df1ad305207fca596d6c865dfeaecd5c9
parents 9bd20ab6 be770dce

services/core/java/com/android/server/storage/FileCollector.java

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/*

 * Copyright (C) 2016 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/LICENSE2.0

 *

 * 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.server.storage;



import android.annotation.IntDef;

import android.os.storage.StorageManager;

import android.util.ArrayMap;



import java.io.File;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.util.Map;



/**

 * FileCollector walks over a directory and categorizes storage usage by their type.

 */

public class FileCollector {

    private static final int UNRECOGNIZED = -1;

    private static final int IMAGES = 0;

    private static final int VIDEO = 1;

    private static final int AUDIO = 2;

    @Retention(RetentionPolicy.SOURCE)

    @IntDef({

            UNRECOGNIZED,

            IMAGES,

            VIDEO,

            AUDIO })

    private @interface FileTypes {}





    private static final Map<String, Integer> EXTENSION_MAP = new ArrayMap<String, Integer>();

    static {

        // Audio

        EXTENSION_MAP.put("aac", AUDIO);

        EXTENSION_MAP.put("amr", AUDIO);

        EXTENSION_MAP.put("awb", AUDIO);

        EXTENSION_MAP.put("snd", AUDIO);

        EXTENSION_MAP.put("flac", AUDIO);

        EXTENSION_MAP.put("mp3", AUDIO);

        EXTENSION_MAP.put("mpga", AUDIO);

        EXTENSION_MAP.put("mpega", AUDIO);

        EXTENSION_MAP.put("mp2", AUDIO);

        EXTENSION_MAP.put("m4a", AUDIO);

        EXTENSION_MAP.put("aif", AUDIO);

        EXTENSION_MAP.put("aiff", AUDIO);

        EXTENSION_MAP.put("aifc", AUDIO);

        EXTENSION_MAP.put("gsm", AUDIO);

        EXTENSION_MAP.put("mka", AUDIO);

        EXTENSION_MAP.put("m3u", AUDIO);

        EXTENSION_MAP.put("wma", AUDIO);

        EXTENSION_MAP.put("wax", AUDIO);

        EXTENSION_MAP.put("ra", AUDIO);

        EXTENSION_MAP.put("rm", AUDIO);

        EXTENSION_MAP.put("ram", AUDIO);

        EXTENSION_MAP.put("pls", AUDIO);

        EXTENSION_MAP.put("sd2", AUDIO);

        EXTENSION_MAP.put("wav", AUDIO);

        EXTENSION_MAP.put("ogg", AUDIO);

        EXTENSION_MAP.put("oga", AUDIO);

        // Video

        EXTENSION_MAP.put("3gpp", VIDEO);

        EXTENSION_MAP.put("3gp", VIDEO);

        EXTENSION_MAP.put("3gpp2", VIDEO);

        EXTENSION_MAP.put("3g2", VIDEO);

        EXTENSION_MAP.put("avi", VIDEO);

        EXTENSION_MAP.put("dl", VIDEO);

        EXTENSION_MAP.put("dif", VIDEO);

        EXTENSION_MAP.put("dv", VIDEO);

        EXTENSION_MAP.put("fli", VIDEO);

        EXTENSION_MAP.put("m4v", VIDEO);

        EXTENSION_MAP.put("ts", VIDEO);

        EXTENSION_MAP.put("mpeg", VIDEO);

        EXTENSION_MAP.put("mpg", VIDEO);

        EXTENSION_MAP.put("mpe", VIDEO);

        EXTENSION_MAP.put("mp4", VIDEO);

        EXTENSION_MAP.put("vob", VIDEO);

        EXTENSION_MAP.put("qt", VIDEO);

        EXTENSION_MAP.put("mov", VIDEO);

        EXTENSION_MAP.put("mxu", VIDEO);

        EXTENSION_MAP.put("webm", VIDEO);

        EXTENSION_MAP.put("lsf", VIDEO);

        EXTENSION_MAP.put("lsx", VIDEO);

        EXTENSION_MAP.put("mkv", VIDEO);

        EXTENSION_MAP.put("mng", VIDEO);

        EXTENSION_MAP.put("asf", VIDEO);

        EXTENSION_MAP.put("asx", VIDEO);

        EXTENSION_MAP.put("wm", VIDEO);

        EXTENSION_MAP.put("wmv", VIDEO);

        EXTENSION_MAP.put("wmx", VIDEO);

        EXTENSION_MAP.put("wvx", VIDEO);

        EXTENSION_MAP.put("movie", VIDEO);

        EXTENSION_MAP.put("wrf", VIDEO);

        // Images

        EXTENSION_MAP.put("bmp", IMAGES);

        EXTENSION_MAP.put("gif", IMAGES);

        EXTENSION_MAP.put("jpg", IMAGES);

        EXTENSION_MAP.put("jpeg", IMAGES);

        EXTENSION_MAP.put("jpe", IMAGES);

        EXTENSION_MAP.put("pcx", IMAGES);

        EXTENSION_MAP.put("png", IMAGES);

        EXTENSION_MAP.put("svg", IMAGES);

        EXTENSION_MAP.put("svgz", IMAGES);

        EXTENSION_MAP.put("tiff", IMAGES);

        EXTENSION_MAP.put("tif", IMAGES);

        EXTENSION_MAP.put("wbmp", IMAGES);

        EXTENSION_MAP.put("webp", IMAGES);

        EXTENSION_MAP.put("dng", IMAGES);

        EXTENSION_MAP.put("cr2", IMAGES);

        EXTENSION_MAP.put("ras", IMAGES);

        EXTENSION_MAP.put("art", IMAGES);

        EXTENSION_MAP.put("jng", IMAGES);

        EXTENSION_MAP.put("nef", IMAGES);

        EXTENSION_MAP.put("nrw", IMAGES);

        EXTENSION_MAP.put("orf", IMAGES);

        EXTENSION_MAP.put("rw2", IMAGES);

        EXTENSION_MAP.put("pef", IMAGES);

        EXTENSION_MAP.put("psd", IMAGES);

        EXTENSION_MAP.put("pnm", IMAGES);

        EXTENSION_MAP.put("pbm", IMAGES);

        EXTENSION_MAP.put("pgm", IMAGES);

        EXTENSION_MAP.put("ppm", IMAGES);

        EXTENSION_MAP.put("srw", IMAGES);

        EXTENSION_MAP.put("arw", IMAGES);

        EXTENSION_MAP.put("rgb", IMAGES);

        EXTENSION_MAP.put("xbm", IMAGES);

        EXTENSION_MAP.put("xpm", IMAGES);

        EXTENSION_MAP.put("xwd", IMAGES);

    }



    /**

     * Returns the file categorization measurement result.

     * @param path Directory to collect and categorize storage in.

     */

    public static MeasurementResult getMeasurementResult(File path) {

        return collectFiles(StorageManager.maybeTranslateEmulatedPathToInternal(path),

                new MeasurementResult());

    }



    private static MeasurementResult collectFiles(File file, MeasurementResult result) {

        File[] files = file.listFiles();



        if (files == null) {

            return result;

        }



        for (File f : files) {

            if (f.isDirectory()) {

                try {

                    collectFiles(f, result);

                } catch (StackOverflowError e) {

                    return result;

                }

            } else {

                handleFile(result, f);

            }

        }



        return result;

    }



    private static void handleFile(MeasurementResult result, File f) {

        long fileSize = f.length();

        int fileType = EXTENSION_MAP.getOrDefault(getExtensionForFile(f), UNRECOGNIZED);

        switch (fileType) {

            case AUDIO:

                result.audioSize += fileSize;

                break;

            case VIDEO:

                result.videosSize += fileSize;

                break;

            case IMAGES:

                result.imagesSize += fileSize;

                break;

            default:

                result.miscSize += fileSize;

        }

    }



    private static String getExtensionForFile(File file) {

        String fileName = file.getName();

        int index = fileName.lastIndexOf('.');

        if (index == -1) {

            return "";

        }

        return fileName.substring(index + 1).toLowerCase();

    }



    /**

     * MeasurementResult contains a storage categorization result.

     */

    public static class MeasurementResult {

        public long imagesSize;

        public long videosSize;

        public long miscSize;

        public long audioSize;



        /**

         * Sums up the storage taken by all of the categorizable sizes in the measurement.

         */

        public long totalAccountedSize() {

            return imagesSize + videosSize + miscSize + audioSize;

        }

    }

}

services/tests/servicestests/src/com/android/server/storage/FileCollectorTest.java

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/*

 * Copyright (C) 2016 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.server.storage;



import android.test.AndroidTestCase;

import com.android.server.storage.FileCollector.MeasurementResult;

import org.junit.Before;

import org.junit.Rule;

import org.junit.Test;

import org.junit.rules.TemporaryFolder;

import org.junit.runner.RunWith;

import org.junit.runners.JUnit4;



import java.io.File;

import java.io.PrintStream;



import static com.google.common.truth.Truth.assertThat;



@RunWith(JUnit4.class)

public class FileCollectorTest extends AndroidTestCase {

    @Rule

    public TemporaryFolder temporaryFolder;



    @Before

    public void setUp() throws Exception {

        temporaryFolder = new TemporaryFolder();

        temporaryFolder.create();

    }



    @Test

    public void testEmpty() throws Exception {

        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());

        assertThat(result.totalAccountedSize()).isEqualTo(0L);

    }



    @Test

    public void testImageFile() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test.jpg"), "1234");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.imagesSize).isEqualTo(4);

    }



    @Test

    public void testVideoFile() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test.mp4"), "1234");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.videosSize).isEqualTo(4);

    }



    @Test

    public void testAudioFile() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test.mp3"), "1234");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.audioSize).isEqualTo(4);

    }



    @Test

    public void testMiscFile() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test"), "1234");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.miscSize).isEqualTo(4);

    }



    @Test

    public void testNestedFile() throws Exception {

        File directory = temporaryFolder.newFolder();

        writeDataToFile(new File(directory, "test"), "1234");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.miscSize).isEqualTo(4);

    }



    @Test

    public void testMultipleFiles() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test"), "1234");

        writeDataToFile(temporaryFolder.newFile("test2"), "12345");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.miscSize).isEqualTo(9);

    }



    @Test

    public void testTotalSize() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test.jpg"), "1");

        writeDataToFile(temporaryFolder.newFile("test.mp3"), "1");

        writeDataToFile(temporaryFolder.newFile("test.mp4"), "1");

        writeDataToFile(temporaryFolder.newFile("test"), "1");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.totalAccountedSize()).isEqualTo(4);

    }



    @Test

    public void testFileEndsWithPeriod() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test."), "1");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.miscSize).isEqualTo(1);

        assertThat(result.totalAccountedSize()).isEqualTo(1);

    }



    public void testIgnoreFileExtensionCase() throws Exception {

        writeDataToFile(temporaryFolder.newFile("test.JpG"), "1234");



        MeasurementResult result = FileCollector.getMeasurementResult(temporaryFolder.getRoot());



        assertThat(result.imagesSize).isEqualTo(4);

    }



    private void writeDataToFile(File f, String data) throws Exception{

        PrintStream out = new PrintStream(f);

        out.print(data);

        out.close();

    }

}