/* * Copyright © 2010 Keith Packard * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ package altosui; import java.io.*; import java.lang.*; import java.util.*; import java.text.ParseException; import java.util.concurrent.LinkedBlockingQueue; /* * This creates a thread to capture telemetry data and write it to * a log file */ class AltosLog implements Runnable { LinkedBlockingQueue input_queue; LinkedBlockingQueue pending_queue; int serial; int flight; FileWriter log_file; Thread log_thread; AltosFile file; private void close_log_file() { if (log_file != null) { try { log_file.close(); } catch (IOException io) { } log_file = null; } } void close() { close_log_file(); if (log_thread != null) { log_thread.interrupt(); log_thread = null; } } File file() { return file; } boolean open (AltosRecord telem) throws IOException { AltosFile a = new AltosFile(telem); System.out.printf("open %s\n", a.toString()); log_file = new FileWriter(a, true); if (log_file != null) { while (!pending_queue.isEmpty()) { try { String s = pending_queue.take(); log_file.write(s); log_file.write('\n'); } catch (InterruptedException ie) { } } log_file.flush(); file = a; } return log_file != null; } public void run () { try { AltosRecord previous = null; for (;;) { AltosLine line = input_queue.take(); if (line.line == null) continue; try { AltosRecord telem = AltosTelemetry.parse(line.line, previous); if (telem.serial != 0 && telem.flight != 0 && (telem.serial != serial || telem.flight != flight || log_file == null)) { close_log_file(); serial = telem.serial; flight = telem.flight; open(telem); } previous = telem; } catch (ParseException pe) { } catch (AltosCRCException ce) { } if (log_file != null) { log_file.write(line.line); log_file.write('\n'); log_file.flush(); } else pending_queue.put(line.line); } } catch (InterruptedException ie) { } catch (IOException ie) { } close(); } public AltosLog (AltosSerial s) { pending_queue = new LinkedBlockingQueue (); input_queue = new LinkedBlockingQueue (); s.add_monitor(input_queue); serial = -1; flight = -1; log_file = null; log_thread = new Thread(this); log_thread.start(); } }