add new database table for persisting logs. DEBUG builds only for

now. Keep the most recent 5K worth of messages. TODO: add a display
activity and the ability to email them.

xwords4/android/XWords4/src/org/eehouse/android/xw4/DBHelper.java

@@ -43,8 +43,9 @@ public class DBHelper extends SQLiteOpenHelper {
     public static final String TABLE_NAME_PAIRS = "pairs";
     public static final String TABLE_NAME_INVITES = "invites";
     public static final String TABLE_NAME_CHAT = "chat";
+    public static final String TABLE_NAME_LOGS = "logs";
     private static final String DB_NAME = "xwdb";
-    private static final int DB_VERSION = 26;
+    private static final int DB_VERSION = 27;
 
     public static final String GAME_NAME = "GAME_NAME";
     public static final String VISID = "VISID";
@@ -114,6 +115,7 @@ public class DBHelper extends SQLiteOpenHelper {
 
     public static final String SENDER = "SENDER";
     public static final String MESSAGE = "MESSAGE";
+    public static final String TAG = "TAG";
 
     private Context m_context;
 
@@ -216,6 +218,12 @@ public class DBHelper extends SQLiteOpenHelper {
         ,{ MESSAGE, "TEXT" }
     };
 
+    private static final String[][] s_logsSchema = {
+        { TIMESTAMP, "DATETIME DEFAULT CURRENT_TIMESTAMP" },
+        { MESSAGE, "TEXT" },
+        { TAG, "TEXT" },
+    };
+
     public DBHelper( Context context )
     {
         super( context, DB_NAME, null, DB_VERSION );
@@ -241,13 +249,14 @@ public class DBHelper extends SQLiteOpenHelper {
         createPairsTable( db );
         createInvitesTable( db );
         createChatsTable( db );
+        createLogsTable( db );
     }
 
     @Override
     @SuppressWarnings("fallthrough")
     public void onUpgrade( SQLiteDatabase db, int oldVersion, int newVersion ) 
     {
-        DbgUtils.logf( "onUpgrade: old: %d; new: %d", oldVersion, newVersion );
+        DbgUtils.logf( false, "onUpgrade: old: %d; new: %d", oldVersion, newVersion );
 
         boolean madeSumTable = false;
         switch( oldVersion ) {
@@ -310,7 +319,9 @@ public class DBHelper extends SQLiteOpenHelper {
             createInvitesTable( db );
         case 25:
             createChatsTable( db );
-            
+        case 26:
+            createLogsTable( db );
+
             break;
         default:
             db.execSQL( "DROP TABLE " + TABLE_NAME_SUM + ";" );
@@ -419,6 +430,11 @@ public class DBHelper extends SQLiteOpenHelper {
         createTable( db, TABLE_NAME_CHAT, s_chatsSchema );
     }
 
+    private void createLogsTable( SQLiteDatabase db )
+    {
+        createTable( db, TABLE_NAME_LOGS, s_logsSchema );
+    }
+
     // Move all existing games to the row previously named "cur games'
     private void moveToCurGames( SQLiteDatabase db )
     {

xwords4/android/XWords4/src/org/eehouse/android/xw4/DBUtils.java

@@ -67,6 +67,9 @@ public class DBUtils {
     public static final int GROUPID_UNSPEC = -1;
     public static final String KEY_NEWGAMECOUNT = "DBUtils.newGameCount";
 
+    // how many log rows to keep?
+    private static final int LOGLIMIT = 5000;
+
     private static final String DICTS_SEP = ",";
 
     private static final String ROW_ID = "rowid";
@@ -2405,6 +2408,35 @@ public class DBUtils {
         return bytes;
     }
 
+    public static void appendLog( String tag, String msg )
+    {
+        Context context = XWApp.getContext();
+        if ( null != context ) {
+            appendLog( context, msg );
+        }
+    }
+
+    private static void appendLog( Context context, String msg )
+    {
+        ContentValues values = new ContentValues();
+        values.put( DBHelper.MESSAGE, msg );
+
+        initDB( context );
+        synchronized( s_dbHelper ) {
+            SQLiteDatabase db = s_dbHelper.getWritableDatabase();
+            long rowid = db.insert( DBHelper.TABLE_NAME_LOGS, null, values );
+
+            if ( 0 == (rowid % (LOGLIMIT / 10)) ) {
+                String where = 
+                    String.format( "not rowid in (select rowid from %s order by TIMESTAMP desc limit %d)",
+                                   DBHelper.TABLE_NAME_LOGS, LOGLIMIT );
+                int nGone = db.delete( DBHelper.TABLE_NAME_LOGS, where, null );
+                DbgUtils.logf( false, "appendLog(): deleted %d rows", nGone );
+            }
+            db.close();
+        }
+    }
+
     private static void copyGameDB( Context context, boolean toSDCard )
     {
         String name = DBHelper.getDBName();

xwords4/android/XWords4/src/org/eehouse/android/xw4/DbgUtils.java

@@ -61,7 +61,12 @@ public class DbgUtils {
         logEnable( on );
     }
 
-    public static void logf( String msg ) 
+    public static void logf( String msg )
+    {
+        logf( true, msg );
+    }
+
+    public static void logf( boolean persist, String msg ) 
     {
         if ( s_doLog ) {
             String time = "";
@@ -71,15 +76,25 @@ public class DbgUtils {
                 time = s_time.format("[%H:%M:%S]-");
             }
             long id = Thread.currentThread().getId();
-            Log.d( TAG, time + id + "-" + msg );
+            msg = time + id + "-" + msg;
+            Log.d( TAG, msg );
+
+            if ( persist && BuildConfig.DEBUG ) {
+                DBUtils.appendLog( TAG, msg );
+            }
         }
     } // logf
 
     public static void logf( String format, Object... args )
+    {
+        logf( true, format, args );
+    }
+
+    public static void logf( boolean persist, String format, Object... args )
     {
         if ( s_doLog ) {
             Formatter formatter = new Formatter();
-            logf( formatter.format( format, args ).toString() );
+            logf( persist, formatter.format( format, args ).toString() );
         }
     } // logf
 

xwords4/android/XWords4/src/org/eehouse/android/xw4/XWApp.java

@@ -54,10 +54,12 @@ public class XWApp extends Application {
 
     private static UUID s_UUID = null;
     private static Boolean s_onEmulator = null;
+    private static Context s_context = null;
 
     @Override
     public void onCreate()
     {
+        s_context = this;
         super.onCreate();
 
         // This one line should always get logged even if logging is
@@ -118,4 +120,6 @@ public class XWApp extends Application {
         }
         return s_onEmulator;
     }
+
+    public static Context getContext() { return s_context; }
 }