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/*
* Copyright © 2010 Keith Packard <keithp@keithp.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 org.altusmetrum.altoslib_14;
import java.io.*;
import java.text.*;
import java.util.concurrent.*;
/*
* This creates a thread to capture telemetry data and write it to
* a log file
*/
public class AltosLog implements Runnable {
LinkedBlockingQueue<AltosLine> input_queue;
LinkedBlockingQueue<String> pending_queue;
int serial;
int flight;
int receiver_serial;
FileWriter log_file;
Thread log_thread;
AltosFile file;
AltosLink link;
AltosLogTrace trace;
private void trace(String format, Object ... arguments) {
if (trace != null)
trace.trace(format, arguments);
}
private void close_log_file() {
if (log_file != null) {
try {
log_file.close();
} catch (IOException io) {
}
log_file = null;
}
}
public void close() {
link.remove_monitor(input_queue);
close_log_file();
if (log_thread != null) {
log_thread.interrupt();
log_thread = null;
}
}
public File file() {
return file;
}
boolean open (AltosCalData cal_data) throws IOException, InterruptedException {
trace("open serial %d flight %d receiver_serial %d",
cal_data.serial,
cal_data.flight,
cal_data.receiver_serial);
AltosFile a = new AltosFile(cal_data);
trace("open file %s\n", a.getPath());
try {
log_file = new FileWriter(a, true);
} catch (IOException ie) {
log_file = null;
trace("open file failed\n");
if (trace != null)
trace.open_failed(a);
}
if (log_file != null) {
trace("open file success\n");
while (!pending_queue.isEmpty()) {
String s = pending_queue.take();
log_file.write(s);
log_file.write('\n');
}
log_file.flush();
file = a;
AltosPreferences.set_logfile(link.serial, file);
}
return log_file != null;
}
public void run () {
trace("log run start\n");
try {
AltosConfigData receiver_config = link.config_data();
AltosCalData cal_data = new AltosCalData();
AltosState state = null;
cal_data.set_receiver_serial(receiver_config.serial);
for (;;) {
AltosLine line = input_queue.take();
if (line.line == null)
continue;
try {
AltosTelemetry telem = AltosTelemetry.parse(line.line);
if (state == null)
state = new AltosState(cal_data);
telem.provide_data(state);
if (cal_data.serial != serial ||
cal_data.flight != flight ||
log_file == null)
{
close_log_file();
serial = cal_data.serial;
flight = cal_data.flight;
state = null;
if (cal_data.serial != AltosLib.MISSING &&
cal_data.flight != AltosLib.MISSING)
open(cal_data);
}
} 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) {
trace("interrupted exception\n");
} catch (TimeoutException te) {
trace("timeout exception\n");
} catch (IOException ie) {
trace("io exception %s message %s\n", ie.toString(), ie.getMessage());
}
trace("log run done\n");
close();
}
public AltosLog (AltosLink link, AltosLogTrace trace) {
pending_queue = new LinkedBlockingQueue<String> ();
input_queue = new LinkedBlockingQueue<AltosLine> ();
link.add_monitor(input_queue);
serial = -1;
flight = -1;
this.trace = trace;
this.link = link;
log_file = null;
log_thread = new Thread(this);
log_thread.start();
}
public AltosLog (AltosLink link) {
this(link, null);
}
}
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