Returns UsageEvents from previous days (d26bea3a) · Commits · e / os / android_frameworks_base

services/usage/java/com/android/server/usage/UsageStatsUtils.java→services/usage/java/com/android/server/usage/UnixCalendar.java

+99 −0

Original line number	Diff line number	Diff line
		@@ -13,51 +13,87 @@
		* License for the specific language governing permissions and limitations
		* under the License.
		*/

		package com.android.server.usage;

		import android.app.usage.UsageStatsManager;

		import java.util.Calendar;

		/**
		* A collection of utility methods used by the UsageStatsService and accompanying classes.
		* A handy calendar object that knows nothing of Locale's or TimeZones. This simplifies
		* interval book-keeping. It is NOT meant to be used as a user-facing calendar, as it has
		* no concept of Locale or TimeZone.
		*/
		final class UsageStatsUtils {
		private UsageStatsUtils() {}
		public class UnixCalendar {
		private static final long DAY_IN_MILLIS = 24 * 60 * 60 * 1000;
		private static final long WEEK_IN_MILLIS = 7 * DAY_IN_MILLIS;
		private static final long MONTH_IN_MILLIS = 30 * DAY_IN_MILLIS;
		private static final long YEAR_IN_MILLIS = 365 * DAY_IN_MILLIS;
		private long mTime;

		/**
		* Truncates the date to the given UsageStats bucket. For example, if the bucket is
		* {@link UsageStatsManager#INTERVAL_YEARLY}, the date is truncated to the 1st day of the year,
		* with the time set to 00:00:00.
		*
		* @param bucket The UsageStats bucket to truncate to.
		* @param cal The date to truncate.
		*/
		public static void truncateDateTo(int bucket, Calendar cal) {
		cal.set(Calendar.HOUR_OF_DAY, 0);
		cal.set(Calendar.MINUTE, 0);
		cal.set(Calendar.SECOND, 0);
		cal.set(Calendar.MILLISECOND, 0);
		public UnixCalendar(long time) {
		mTime = time;
		}

		public void truncateToDay() {
		mTime -= mTime % DAY_IN_MILLIS;
		}

		public void truncateToWeek() {
		mTime -= mTime % WEEK_IN_MILLIS;
		}

		public void truncateToMonth() {
		mTime -= mTime % MONTH_IN_MILLIS;
		}

		public void truncateToYear() {
		mTime -= mTime % YEAR_IN_MILLIS;
		}

		public void addDays(int val) {
		mTime += val * DAY_IN_MILLIS;
		}

		public void addWeeks(int val) {
		mTime += val * WEEK_IN_MILLIS;
		}

		public void addMonths(int val) {
		mTime += val * MONTH_IN_MILLIS;
		}

		public void addYears(int val) {
		mTime += val * YEAR_IN_MILLIS;
		}

		public void setTimeInMillis(long time) {
		mTime = time;
		}

		public long getTimeInMillis() {
		return mTime;
		}

		switch (bucket) {
		public static void truncateTo(UnixCalendar calendar, int intervalType) {
		switch (intervalType) {
		case UsageStatsManager.INTERVAL_YEARLY:
		cal.set(Calendar.DAY_OF_YEAR, 0);
		calendar.truncateToYear();
		break;

		case UsageStatsManager.INTERVAL_MONTHLY:
		cal.set(Calendar.DAY_OF_MONTH, 0);
		calendar.truncateToMonth();
		break;

		case UsageStatsManager.INTERVAL_WEEKLY:
		cal.set(Calendar.DAY_OF_WEEK, 0);
		calendar.truncateToWeek();
		break;

		case UsageStatsManager.INTERVAL_DAILY:
		calendar.truncateToDay();
		break;

		default:
		throw new UnsupportedOperationException("Can't truncate date to bucket " + bucket);
		throw new UnsupportedOperationException("Can't truncate date to interval " +
		intervalType);
		}
		}
		}

services/usage/java/com/android/server/usage/UsageStatsDatabase.java

+82 −13

Original line number	Diff line number	Diff line
		@@ -21,24 +21,30 @@ import android.app.usage.UsageStatsManager;
		import android.util.AtomicFile;
		import android.util.Slog;

		import java.io.BufferedReader;
		import java.io.BufferedWriter;
		import java.io.File;
		import java.io.FileReader;
		import java.io.FileWriter;
		import java.io.FilenameFilter;
		import java.io.IOException;
		import java.util.ArrayList;
		import java.util.Calendar;
		import java.util.List;

		/**
		* Provides an interface to query for UsageStat data from an XML database.
		*/
		class UsageStatsDatabase {
		private static final int CURRENT_VERSION = 1;

		private static final String TAG = "UsageStatsDatabase";
		private static final boolean DEBUG = UsageStatsService.DEBUG;

		private final Object mLock = new Object();
		private final File[] mIntervalDirs;
		private final TimeSparseArray<AtomicFile>[] mSortedStatFiles;
		private final Calendar mCal;
		private final UnixCalendar mCal;
		private final File mVersionFile;

		public UsageStatsDatabase(File dir) {
		mIntervalDirs = new File[] {
		@@ -47,8 +53,9 @@ class UsageStatsDatabase {
		new File(dir, "monthly"),
		new File(dir, "yearly"),
		};
		mVersionFile = new File(dir, "version");
		mSortedStatFiles = new TimeSparseArray[mIntervalDirs.length];
		mCal = Calendar.getInstance();
		mCal = new UnixCalendar(0);
		}

		/**
		@@ -64,6 +71,8 @@ class UsageStatsDatabase {
		}
		}

		checkVersionLocked();

		final FilenameFilter backupFileFilter = new FilenameFilter() {
		@Override
		public boolean accept(File dir, String name) {
		@@ -88,6 +97,43 @@ class UsageStatsDatabase {
		}
		}

		private void checkVersionLocked() {
		int version;
		try (BufferedReader reader = new BufferedReader(new FileReader(mVersionFile))) {
		version = Integer.parseInt(reader.readLine());
		} catch (NumberFormatException \| IOException e) {
		version = 0;
		}

		if (version != CURRENT_VERSION) {
		Slog.i(TAG, "Upgrading from version " + version + " to " + CURRENT_VERSION);
		doUpgradeLocked(version, CURRENT_VERSION);

		try (BufferedWriter writer = new BufferedWriter(new FileWriter(mVersionFile))) {
		writer.write(Integer.toString(CURRENT_VERSION));
		} catch (IOException e) {
		Slog.e(TAG, "Failed to write new version");
		throw new RuntimeException(e);
		}
		}
		}

		private void doUpgradeLocked(int thisVersion, int nextVersion) {
		if (thisVersion == 0) {
		// Delete all files if we are version 0. This is a pre-release version,
		// so this is fine.
		Slog.i(TAG, "Deleting all usage stats files");
		for (int i = 0; i < mIntervalDirs.length; i++) {
		File[] files = mIntervalDirs[i].listFiles();
		if (files != null) {
		for (File f : files) {
		f.delete();
		}
		}
		}
		}
		}

		/**
		* Get the latest stats that exist for this interval type.
		*/
		@@ -161,25 +207,48 @@ class UsageStatsDatabase {
		throw new IllegalArgumentException("Bad interval type " + intervalType);
		}

		if (endTime < beginTime) {
		final TimeSparseArray<AtomicFile> intervalStats = mSortedStatFiles[intervalType];

		if (endTime <= beginTime) {
		if (DEBUG) {
		Slog.d(TAG, "endTime(" + endTime + ") <= beginTime(" + beginTime + ")");
		}
		return null;
		}

		final int startIndex = mSortedStatFiles[intervalType].closestIndexOnOrBefore(beginTime);
		int startIndex = intervalStats.closestIndexOnOrBefore(beginTime);
		if (startIndex < 0) {
		// All the stats available have timestamps after beginTime, which means they all
		// match.
		startIndex = 0;
		}

		int endIndex = intervalStats.closestIndexOnOrBefore(endTime);
		if (endIndex < 0) {
		// All the stats start after this range ends, so nothing matches.
		if (DEBUG) {
		Slog.d(TAG, "No results for this range. All stats start after.");
		}
		return null;
		}

		int endIndex = mSortedStatFiles[intervalType].closestIndexOnOrAfter(endTime);
		if (intervalStats.keyAt(endIndex) == endTime) {
		// The endTime is exclusive, so if we matched exactly take the one before.
		endIndex--;
		if (endIndex < 0) {
		endIndex = mSortedStatFiles[intervalType].size() - 1;
		// All the stats start after this range ends, so nothing matches.
		if (DEBUG) {
		Slog.d(TAG, "No results for this range. All stats start after.");
		}
		return null;
		}
		}

		try {
		IntervalStats stats = new IntervalStats();
		ArrayList<T> results = new ArrayList<>();
		for (int i = startIndex; i <= endIndex; i++) {
		final AtomicFile f = mSortedStatFiles[intervalType].valueAt(i);
		final AtomicFile f = intervalStats.valueAt(i);

		if (DEBUG) {
		Slog.d(TAG, "Reading stat file " + f.getBaseFile().getAbsolutePath());
		@@ -230,22 +299,22 @@ class UsageStatsDatabase {
		synchronized (mLock) {
		long timeNow = System.currentTimeMillis();
		mCal.setTimeInMillis(timeNow);
		mCal.add(Calendar.YEAR, -3);
		mCal.addYears(-3);
		pruneFilesOlderThan(mIntervalDirs[UsageStatsManager.INTERVAL_YEARLY],
		mCal.getTimeInMillis());

		mCal.setTimeInMillis(timeNow);
		mCal.add(Calendar.MONTH, -6);
		mCal.addMonths(-6);
		pruneFilesOlderThan(mIntervalDirs[UsageStatsManager.INTERVAL_MONTHLY],
		mCal.getTimeInMillis());

		mCal.setTimeInMillis(timeNow);
		mCal.add(Calendar.WEEK_OF_YEAR, -4);
		mCal.addWeeks(-4);
		pruneFilesOlderThan(mIntervalDirs[UsageStatsManager.INTERVAL_WEEKLY],
		mCal.getTimeInMillis());

		mCal.setTimeInMillis(timeNow);
		mCal.add(Calendar.DAY_OF_YEAR, -7);
		mCal.addDays(-7);
		pruneFilesOlderThan(mIntervalDirs[UsageStatsManager.INTERVAL_DAILY],
		mCal.getTimeInMillis());
		}

services/usage/java/com/android/server/usage/UsageStatsService.java

+1 −3

Original line number	Diff line number	Diff line
		@@ -62,9 +62,7 @@ public class UsageStatsService extends SystemService implements
		static final boolean DEBUG = false;
		private static final long TEN_SECONDS = 10 * 1000;
		private static final long TWENTY_MINUTES = 20 * 60 * 1000;
		private static final long TWO_MINUTES = 2 * 60 * 1000;
		private static final long FLUSH_INTERVAL = DEBUG ? TEN_SECONDS : TWENTY_MINUTES;
		private static final long END_TIME_DELAY = DEBUG ? 0 : TWO_MINUTES;

		// Handler message types.
		static final int MSG_REPORT_EVENT = 0;
		@@ -178,7 +176,7 @@ public class UsageStatsService extends SystemService implements
		}

		/**
		* Called by the Bunder stub
		* Called by the Binder stub
		*/
		void shutdown() {
		synchronized (mLock) {

services/usage/java/com/android/server/usage/UserUsageStatsService.java

+119 −94

Original line number	Diff line number	Diff line
		@@ -32,7 +32,6 @@ import java.io.IOException;
		import java.text.SimpleDateFormat;
		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.Calendar;
		import java.util.List;

		/**
		@@ -47,7 +46,7 @@ class UserUsageStatsService {
		private final UsageStatsDatabase mDatabase;
		private final IntervalStats[] mCurrentStats;
		private boolean mStatsChanged = false;
		private final Calendar mDailyExpiryDate;
		private final UnixCalendar mDailyExpiryDate;
		private final StatsUpdatedListener mListener;
		private final String mLogPrefix;

		@@ -56,7 +55,7 @@ class UserUsageStatsService {
		}

		UserUsageStatsService(int userId, File usageStatsDir, StatsUpdatedListener listener) {
		mDailyExpiryDate = Calendar.getInstance();
		mDailyExpiryDate = new UnixCalendar(0);
		mDatabase = new UsageStatsDatabase(usageStatsDir);
		mCurrentStats = new IntervalStats[UsageStatsManager.INTERVAL_COUNT];
		mListener = listener;
		@@ -66,6 +65,7 @@ class UserUsageStatsService {
		void init() {
		mDatabase.init();

		final long timeNow = System.currentTimeMillis();
		int nullCount = 0;
		for (int i = 0; i < mCurrentStats.length; i++) {
		mCurrentStats[i] = mDatabase.getLatestUsageStats(i);
		@@ -73,6 +73,11 @@ class UserUsageStatsService {
		// Find out how many intervals we don't have data for.
		// Ideally it should be all or none.
		nullCount++;
		} else if (mCurrentStats[i].beginTime > timeNow) {
		Slog.e(TAG, mLogPrefix + "Interval " + i + " has stat in the future " +
		mCurrentStats[i].beginTime);
		mCurrentStats[i] = null;
		nullCount++;
		}
		}

		@@ -94,10 +99,11 @@ class UserUsageStatsService {
		// that is reported.
		mDailyExpiryDate.setTimeInMillis(
		mCurrentStats[UsageStatsManager.INTERVAL_DAILY].beginTime);
		mDailyExpiryDate.add(Calendar.DAY_OF_YEAR, 1);
		UsageStatsUtils.truncateDateTo(UsageStatsManager.INTERVAL_DAILY, mDailyExpiryDate);
		Slog.i(TAG, mLogPrefix + "Rollover scheduled for "
		+ sDateFormat.format(mDailyExpiryDate.getTime()));
		mDailyExpiryDate.addDays(1);
		mDailyExpiryDate.truncateToDay();
		Slog.i(TAG, mLogPrefix + "Rollover scheduled @ " +
		sDateFormat.format(mDailyExpiryDate.getTimeInMillis()) +
		"(" + mDailyExpiryDate.getTimeInMillis() + ")");
		}

		// Now close off any events that were open at the time this was saved.
		@@ -195,49 +201,68 @@ class UserUsageStatsService {
		* and bucket, then calls the {@link com.android.server.usage.UsageStatsDatabase.StatCombiner}
		* provided to select the stats to use from the IntervalStats object.
		*/
		private <T> List<T> queryStats(int bucketType, long beginTime, long endTime,
		private <T> List<T> queryStats(int intervalType, final long beginTime, final long endTime,
		StatCombiner<T> combiner) {
		if (bucketType == UsageStatsManager.INTERVAL_BEST) {
		bucketType = mDatabase.findBestFitBucket(beginTime, endTime);
		if (intervalType == UsageStatsManager.INTERVAL_BEST) {
		intervalType = mDatabase.findBestFitBucket(beginTime, endTime);
		if (intervalType < 0) {
		// Nothing saved to disk yet, so every stat is just as equal (no rollover has
		// occurred.
		intervalType = UsageStatsManager.INTERVAL_DAILY;
		}
		}

		if (bucketType < 0 \|\| bucketType >= mCurrentStats.length) {
		if (intervalType < 0 \|\| intervalType >= mCurrentStats.length) {
		if (DEBUG) {
		Slog.d(TAG, mLogPrefix + "Bad bucketType used " + bucketType);
		Slog.d(TAG, mLogPrefix + "Bad intervalType used " + intervalType);
		}
		return null;
		}

		if (beginTime >= mCurrentStats[bucketType].endTime) {
		final IntervalStats currentStats = mCurrentStats[intervalType];

		if (DEBUG) {
		Slog.d(TAG, mLogPrefix + "SELECT * FROM " + intervalType + " WHERE beginTime >= "
		+ beginTime + " AND endTime < " + endTime);
		}

		if (beginTime >= currentStats.endTime) {
		if (DEBUG) {
		Slog.d(TAG, mLogPrefix + "Requesting stats after " + beginTime + " but latest is "
		+ mCurrentStats[bucketType].endTime);
		+ currentStats.endTime);
		}
		// Nothing newer available.
		return null;
		}

		// Truncate the endTime to just before the in-memory stats. Then, we'll append the
		// in-memory stats to the results (if necessary) so as to avoid writing to disk too
		// often.
		final long truncatedEndTime = Math.min(currentStats.beginTime, endTime);

		} else if (beginTime >= mCurrentStats[bucketType].beginTime) {
		// Get the stats from disk.
		List<T> results = mDatabase.queryUsageStats(intervalType, beginTime,
		truncatedEndTime, combiner);
		if (DEBUG) {
		Slog.d(TAG, mLogPrefix + "Returning in-memory stats for bucket " + bucketType);
		}
		// Fast path for retrieving in-memory state.
		ArrayList<T> results = new ArrayList<>();
		combiner.combine(mCurrentStats[bucketType], true, results);
		return results;
		Slog.d(TAG, "Got " + (results != null ? results.size() : 0) + " results from disk");
		Slog.d(TAG, "Current stats beginTime=" + currentStats.beginTime +
		" endTime=" + currentStats.endTime);
		}

		// Flush any changes that were made to disk before we do a disk query.
		// If we're not grabbing the ongoing stats, no need to persist.
		persistActiveStats();

		// Now check if the in-memory stats match the range and add them if they do.
		if (beginTime < currentStats.endTime && endTime > currentStats.beginTime) {
		if (DEBUG) {
		Slog.d(TAG, mLogPrefix + "SELECT * FROM " + bucketType + " WHERE beginTime >= "
		+ beginTime + " AND endTime < " + endTime);
		Slog.d(TAG, mLogPrefix + "Returning in-memory stats");
		}

		if (results == null) {
		results = new ArrayList<>();
		}
		combiner.combine(currentStats, true, results);
		}

		final List<T> results = mDatabase.queryUsageStats(bucketType, beginTime, endTime, combiner);
		if (DEBUG) {
		Slog.d(TAG, mLogPrefix + "Results: " + (results == null ? 0 : results.size()));
		Slog.d(TAG, mLogPrefix + "Results: " + (results != null ? results.size() : 0));
		}
		return results;
		}
		@@ -250,46 +275,47 @@ class UserUsageStatsService {
		return queryStats(bucketType, beginTime, endTime, sConfigStatsCombiner);
		}

		UsageEvents queryEvents(long beginTime, long endTime) {
		if (endTime > mCurrentStats[UsageStatsManager.INTERVAL_DAILY].beginTime) {
		if (beginTime > mCurrentStats[UsageStatsManager.INTERVAL_DAILY].endTime) {
		return null;
		}

		TimeSparseArray<UsageEvents.Event> events =
		mCurrentStats[UsageStatsManager.INTERVAL_DAILY].events;
		if (events == null) {
		return null;
		UsageEvents queryEvents(final long beginTime, final long endTime) {
		final ArraySet<String> names = new ArraySet<>();
		List<UsageEvents.Event> results = queryStats(UsageStatsManager.INTERVAL_DAILY,
		beginTime, endTime, new StatCombiner<UsageEvents.Event>() {
		@Override
		public void combine(IntervalStats stats, boolean mutable,
		List<UsageEvents.Event> accumulatedResult) {
		if (stats.events == null) {
		return;
		}

		final int startIndex = events.closestIndexOnOrAfter(beginTime);
		final int startIndex = stats.events.closestIndexOnOrAfter(beginTime);
		if (startIndex < 0) {
		return null;
		return;
		}

		ArraySet<String> names = new ArraySet<>();
		ArrayList<UsageEvents.Event> results = new ArrayList<>();
		final int size = events.size();
		final int size = stats.events.size();
		for (int i = startIndex; i < size; i++) {
		if (events.keyAt(i) >= endTime) {
		break;
		if (stats.events.keyAt(i) >= endTime) {
		return;
		}
		final UsageEvents.Event event = events.valueAt(i);

		final UsageEvents.Event event = stats.events.valueAt(i);
		names.add(event.mPackage);
		if (event.mClass != null) {
		names.add(event.mClass);
		}
		results.add(event);
		accumulatedResult.add(event);
		}
		String[] table = names.toArray(new String[names.size()]);
		Arrays.sort(table);
		return new UsageEvents(results, table);
		}
		});

		// TODO(adamlesinski): Query the previous days.
		if (results == null \|\| results.isEmpty()) {
		return null;
		}

		String[] table = names.toArray(new String[names.size()]);
		Arrays.sort(table);
		return new UsageEvents(results, table);
		}

		void persistActiveStats() {
		if (mStatsChanged) {
		Slog.i(TAG, mLogPrefix + "Flushing usage stats to disk");
		@@ -360,54 +386,53 @@ class UserUsageStatsService {
		private void loadActiveStats() {
		final long timeNow = System.currentTimeMillis();

		Calendar tempCal = mDailyExpiryDate;
		for (int bucketType = 0; bucketType < mCurrentStats.length; bucketType++) {
		final UnixCalendar tempCal = mDailyExpiryDate;
		for (int intervalType = 0; intervalType < mCurrentStats.length; intervalType++) {
		tempCal.setTimeInMillis(timeNow);
		UsageStatsUtils.truncateDateTo(bucketType, tempCal);
		UnixCalendar.truncateTo(tempCal, intervalType);

		if (mCurrentStats[bucketType] != null &&
		mCurrentStats[bucketType].beginTime == tempCal.getTimeInMillis()) {
		if (mCurrentStats[intervalType] != null &&
		mCurrentStats[intervalType].beginTime == tempCal.getTimeInMillis()) {
		// These are the same, no need to load them (in memory stats are always newer
		// than persisted stats).
		continue;
		}

		final long lastBeginTime = mDatabase.getLatestUsageStatsBeginTime(bucketType);
		if (lastBeginTime >= tempCal.getTimeInMillis()) {
		final long lastBeginTime = mDatabase.getLatestUsageStatsBeginTime(intervalType);
		if (lastBeginTime > timeNow) {
		Slog.e(TAG, mLogPrefix + "Latest usage stats for interval " +
		intervalType + " begins in the future");
		mCurrentStats[intervalType] = null;
		} else if (lastBeginTime >= tempCal.getTimeInMillis()) {
		if (DEBUG) {
		Slog.d(TAG, mLogPrefix + "Loading existing stats (" + lastBeginTime +
		") for bucket " + bucketType);
		}
		mCurrentStats[bucketType] = mDatabase.getLatestUsageStats(bucketType);
		if (DEBUG) {
		if (mCurrentStats[bucketType] != null) {
		Slog.d(TAG, mLogPrefix + "Found " +
		(mCurrentStats[bucketType].events == null ?
		0 : mCurrentStats[bucketType].events.size()) +
		" events");
		}
		Slog.d(TAG, mLogPrefix + "Loading existing stats @ " +
		sDateFormat.format(lastBeginTime) + "(" + lastBeginTime +
		") for interval " + intervalType);
		}
		mCurrentStats[intervalType] = mDatabase.getLatestUsageStats(intervalType);
		} else {
		mCurrentStats[bucketType] = null;
		mCurrentStats[intervalType] = null;
		}

		if (mCurrentStats[bucketType] == null) {
		if (mCurrentStats[intervalType] == null) {
		if (DEBUG) {
		Slog.d(TAG, "Creating new stats (" + tempCal.getTimeInMillis() +
		") for bucket " + bucketType);
		Slog.d(TAG, "Creating new stats @ " +
		sDateFormat.format(tempCal.getTimeInMillis()) + "(" +
		tempCal.getTimeInMillis() + ") for interval " + intervalType);

		}
		mCurrentStats[bucketType] = new IntervalStats();
		mCurrentStats[bucketType].beginTime = tempCal.getTimeInMillis();
		mCurrentStats[bucketType].endTime = timeNow;
		mCurrentStats[intervalType] = new IntervalStats();
		mCurrentStats[intervalType].beginTime = tempCal.getTimeInMillis();
		mCurrentStats[intervalType].endTime = timeNow;
		}
		}
		mStatsChanged = false;
		mDailyExpiryDate.setTimeInMillis(timeNow);
		mDailyExpiryDate.add(Calendar.DAY_OF_YEAR, 1);
		UsageStatsUtils.truncateDateTo(UsageStatsManager.INTERVAL_DAILY, mDailyExpiryDate);
		Slog.i(TAG, mLogPrefix + "Rollover scheduled for "
		+ sDateFormat.format(mDailyExpiryDate.getTime()));
		mDailyExpiryDate.addDays(1);
		mDailyExpiryDate.truncateToDay();
		Slog.i(TAG, mLogPrefix + "Rollover scheduled @ " +
		sDateFormat.format(mDailyExpiryDate.getTimeInMillis()) + "(" +
		tempCal.getTimeInMillis() + ")");
		}