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
  26 /*
  27  * This creates a thread to capture telemetry data and write it to
  28  * a log file
  29  */
  30 class AltosLog implements Runnable {
  31
  32         LinkedBlockingQueue<AltosLine>  input_queue;
  33         LinkedBlockingQueue<String>     pending_queue;
  34         int                             serial;
  35         int                             flight;
  36         FileWriter                      log_file;
  37         Thread                          log_thread;
  38
  39         void close() {
  40                 if (log_file != null) {
  41                         try {
  42                                 log_file.close();
  43                         } catch (IOException io) {
  44                         }
  45                 }
  46                 if (log_thread != null)
  47                         log_thread.interrupt();
  48         }
  49
  50         boolean open (AltosTelemetry telem) throws IOException {
  51                 AltosFile       a = new AltosFile(telem);
  52
  53                 log_file = new FileWriter(a, true);
  54                 if (log_file != null) {
  55                         while (!pending_queue.isEmpty()) {
  56                                 try {
  57                                         String s = pending_queue.take();
  58                                         log_file.write(s);
  59                                         log_file.write('\n');
  60                                 } catch (InterruptedException ie) {
  61                                 }
  62                         }
  63                         log_file.flush();
  64                 }
  65                 return log_file != null;
  66         }
  67
  68         public void run () {
  69                 try {
  70                         for (;;) {
  71                                 AltosLine       line = input_queue.take();
  72                                 if (line.line == null)
  73                                         continue;
  74                                 try {
  75                                         AltosTelemetry  telem = new AltosTelemetry(line.line);
  76                                         if (telem.serial != serial || telem.flight != flight || log_file == null) {
  77                                                 close();
  78                                                 serial = telem.serial;
  79                                                 flight = telem.flight;
  80                                                 open(telem);
  81                                         }
  82                                 } catch (ParseException pe) {
  83                                 } catch (AltosCRCException ce) {
  84                                 }
  85                                 if (log_file != null) {
  86                                         log_file.write(line.line);
  87                                         log_file.write('\n');
  88                                         log_file.flush();
  89                                 } else
  90                                         pending_queue.put(line.line);
  91                         }
  92                 } catch (InterruptedException ie) {
  93                 } catch (IOException ie) {
  94                 }
  95                 close();
  96         }
  97
  98         public AltosLog (AltosSerial s) {
  99                 pending_queue = new LinkedBlockingQueue<String> ();
 100                 input_queue = new LinkedBlockingQueue<AltosLine> ();
 101                 s.add_monitor(input_queue);
 102                 serial = -1;
 103                 flight = -1;
 104                 log_file = null;
 105                 log_thread = new Thread(this);
 106                 log_thread.start();
 107         }
 108 }