git.gag.com Git - fw/altos/blob - ao-tools/altosui/AltosLog.java

   1 /*
   2  * Copyright © 2010 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package altosui;
  19
  20 import java.io.*;
  21 import java.lang.*;
  22 import java.util.*;
  23 import java.text.ParseException;
  24 import java.util.concurrent.LinkedBlockingQueue;
  25 import altosui.AltosSerial;
  26 import altosui.AltosFile;
  27 import altosui.AltosLine;
  28
  29 /*
  30  * This creates a thread to capture telemetry data and write it to
  31  * a log file
  32  */
  33 class AltosLog implements Runnable {
  34
  35         LinkedBlockingQueue<AltosLine>  input_queue;
  36         LinkedBlockingQueue<String>     pending_queue;
  37         int                             serial;
  38         int                             flight;
  39         FileWriter                      log_file;
  40         Thread                          log_thread;
  41
  42         void close() {
  43                 if (log_file != null) {
  44                         try {
  45                                 log_file.close();
  46                         } catch (IOException io) {
  47                         }
  48                 }
  49                 if (log_thread != null)
  50                         log_thread.interrupt();
  51         }
  52
  53         boolean open (AltosTelemetry telem) throws IOException {
  54                 AltosFile       a = new AltosFile(telem);
  55
  56                 log_file = new FileWriter(a, true);
  57                 if (log_file != null) {
  58                         while (!pending_queue.isEmpty()) {
  59                                 try {
  60                                         String s = pending_queue.take();
  61                                         log_file.write(s);
  62                                         log_file.write('\n');
  63                                 } catch (InterruptedException ie) {
  64                                 }
  65                         }
  66                         log_file.flush();
  67                 }
  68                 return log_file != null;
  69         }
  70
  71         public void run () {
  72                 try {
  73                         for (;;) {
  74                                 AltosLine       line = input_queue.take();
  75                                 if (line.line == null)
  76                                         continue;
  77                                 try {
  78                                         AltosTelemetry  telem = new AltosTelemetry(line.line);
  79                                         if (telem.serial != serial || telem.flight != flight || log_file == null) {
  80                                                 close();
  81                                                 serial = telem.serial;
  82                                                 flight = telem.flight;
  83                                                 open(telem);
  84                                         }
  85                                 } catch (ParseException pe) {
  86                                 } catch (AltosCRCException ce) {
  87                                 }
  88                                 if (log_file != null) {
  89                                         log_file.write(line.line);
  90                                         log_file.write('\n');
  91                                         log_file.flush();
  92                                 } else
  93                                         pending_queue.put(line.line);
  94                         }
  95                 } catch (InterruptedException ie) {
  96                 } catch (IOException ie) {
  97                 }
  98                 close();
  99         }
 100
 101         public AltosLog (AltosSerial s) {
 102                 pending_queue = new LinkedBlockingQueue<String> ();
 103                 input_queue = new LinkedBlockingQueue<AltosLine> ();
 104                 s.add_monitor(input_queue);
 105                 serial = -1;
 106                 flight = -1;
 107                 log_file = null;
 108                 log_thread = new Thread(this);
 109                 log_thread.start();
 110         }
 111 }