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Commit 81dae8d0 authored by Kurt Partridge's avatar Kurt Partridge
Browse files

delete old ResearchLog files 

cleans out the local directory of files that may have persisted
accidentally because of system crashes, etc.  default lifetime is
curently 1 day.

Bug: 6188932
Change-Id: I4b51169d6dd0eddb6bf8b661165f88e63782ce7d
parent eea34598

java/src/com/android/inputmethod/latin/ResearchLogger.java

+24 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ import android.content.SharedPreferences.Editor; 
import android.inputmethodservice.InputMethodService;

import android.os.Build;

import android.text.TextUtils;

import android.text.format.DateUtils;

import android.util.Log;

import android.view.MotionEvent;

import android.view.inputmethod.CompletionInfo;
@@ -40,6 +41,7 @@ import com.android.inputmethod.latin.RichInputConnection.Range; 
import com.android.inputmethod.latin.define.ProductionFlag;



import java.io.File;

import java.io.FileFilter;

import java.io.IOException;

import java.text.SimpleDateFormat;

import java.util.ArrayList;
@@ -93,6 +95,9 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang 
            Character.codePointAt("\uE000", 0);  // U+E000 is in the "private-use area"

    // U+E001 is in the "private-use area"

    /* package for test */ static final String WORD_REPLACEMENT_STRING = "\uE001";

    private static final String PREF_LAST_CLEANUP_TIME = "pref_last_cleanup_time";

    private static final long DURATION_BETWEEN_DIR_CLEANUP_IN_MS = DateUtils.DAY_IN_MILLIS;

    private static final long MAX_LOGFILE_AGE_IN_MS = DateUtils.DAY_IN_MILLIS;

    // set when LatinIME should ignore an onUpdateSelection() callback that

    // arises from operations in this class

    private static boolean sLatinIMEExpectingUpdateSelection = false;
@@ -124,10 +129,29 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang 
            mUUIDString = getUUID(prefs);

            sIsLogging = prefs.getBoolean(PREF_USABILITY_STUDY_MODE, false);

            prefs.registerOnSharedPreferenceChangeListener(this);



            final long lastCleanupTime = prefs.getLong(PREF_LAST_CLEANUP_TIME, 0L);

            final long now = System.currentTimeMillis();

            if (lastCleanupTime + DURATION_BETWEEN_DIR_CLEANUP_IN_MS < now) {

                final long timeHorizon = now - MAX_LOGFILE_AGE_IN_MS;

                cleanupLoggingDir(mFilesDir, timeHorizon);

                Editor e = prefs.edit();

                e.putLong(PREF_LAST_CLEANUP_TIME, now);

                e.apply();

            }

        }

        mKeyboardSwitcher = keyboardSwitcher;

    }



    private void cleanupLoggingDir(final File dir, final long time) {

        for (File file : dir.listFiles()) {

            if (file.getName().startsWith(ResearchLogger.FILENAME_PREFIX) &&

                    file.lastModified() < time) {

                file.delete();

            }

        }

    }



    private File createLogFile(File filesDir) {

        final StringBuilder sb = new StringBuilder();

        sb.append(FILENAME_PREFIX).append('-');