git.gag.com Git - fw/altos/blob - altoslib/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; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 package org.altusmetrum.altoslib_14;
  20
  21 import java.io.*;
  22 import java.text.*;
  23 import java.util.concurrent.*;
  24
  25 /*
  26  * This creates a thread to capture telemetry data and write it to
  27  * a log file
  28  */
  29 public class AltosLog implements Runnable {
  30
  31         LinkedBlockingQueue<AltosLine>  input_queue;
  32         LinkedBlockingQueue<String>     pending_queue;
  33         int                             serial;
  34         int                             flight;
  35         int                             receiver_serial;
  36         FileWriter                      log_file;
  37         Thread                          log_thread;
  38         AltosFile                       file;
  39         AltosLink                       link;
  40
  41         private void close_log_file() {
  42                 if (log_file != null) {
  43                         try {
  44                                 log_file.close();
  45                         } catch (IOException io) {
  46                         }
  47                         log_file = null;
  48                 }
  49         }
  50
  51         public void close() {
  52                 link.remove_monitor(input_queue);
  53                 close_log_file();
  54                 if (log_thread != null) {
  55                         log_thread.interrupt();
  56                         log_thread = null;
  57                 }
  58         }
  59
  60         public File file() {
  61                 return file;
  62         }
  63
  64         boolean open (AltosCalData cal_data) throws IOException, InterruptedException {
  65                 AltosFile       a = new AltosFile(cal_data);
  66
  67                 log_file = new FileWriter(a, true);
  68                 if (log_file != null) {
  69                         while (!pending_queue.isEmpty()) {
  70                                 String s = pending_queue.take();
  71                                 log_file.write(s);
  72                                 log_file.write('\n');
  73                         }
  74                         log_file.flush();
  75                         file = a;
  76                         AltosPreferences.set_logfile(link.serial, file);
  77                 }
  78                 return log_file != null;
  79         }
  80
  81         public void run () {
  82                 try {
  83                         AltosConfigData receiver_config = link.config_data();
  84                         AltosCalData    cal_data = new AltosCalData();
  85                         AltosState      state = null;
  86                         cal_data.set_receiver_serial(receiver_config.serial);
  87                         for (;;) {
  88                                 AltosLine       line = input_queue.take();
  89                                 if (line.line == null)
  90                                         continue;
  91                                 try {
  92                                         AltosTelemetry  telem = AltosTelemetry.parse(line.line);
  93                                         if (state == null)
  94                                                 state = new AltosState(cal_data);
  95                                         telem.provide_data(state);
  96
  97                                         if (cal_data.serial != serial ||
  98                                             cal_data.flight != flight ||
  99                                             log_file == null)
 100                                         {
 101                                                 close_log_file();
 102                                                 serial = cal_data.serial;
 103                                                 flight = cal_data.flight;
 104                                                 state = null;
 105                                                 if (cal_data.serial != AltosLib.MISSING &&
 106                                                     cal_data.flight != AltosLib.MISSING)
 107                                                         open(cal_data);
 108                                         }
 109                                 } catch (ParseException pe) {
 110                                 } catch (AltosCRCException ce) {
 111                                 }
 112                                 if (log_file != null) {
 113                                         log_file.write(line.line);
 114                                         log_file.write('\n');
 115                                         log_file.flush();
 116                                 } else
 117                                         pending_queue.put(line.line);
 118                         }
 119                 } catch (InterruptedException ie) {
 120                 } catch (TimeoutException te) {
 121                 } catch (IOException ie) {
 122                 }
 123                 close();
 124         }
 125
 126         public AltosLog (AltosLink link) {
 127                 pending_queue = new LinkedBlockingQueue<String> ();
 128                 input_queue = new LinkedBlockingQueue<AltosLine> ();
 129                 link.add_monitor(input_queue);
 130                 serial = -1;
 131                 flight = -1;
 132                 this.link = link;
 133                 log_file = null;
 134                 log_thread = new Thread(this);
 135                 log_thread.start();
 136         }
 137 }