public void addListener(long min_delta_bytes, final LongTermStatsListener listener) {
listeners.add(new Object[] {listener, min_delta_bytes, session_total});
dispatcher.dispatch(
new AERunnable() {
public void runSupport() {
listener.updated(LongTermStatsImpl.this);
}
});
}
private void write(int record_type, long[] line_stats) {
synchronized (this) {
try {
final long now = SystemTime.getCurrentTime();
final long now_mins = now / (1000 * 60);
String[] bits = utc_date_format.format(new Date(now)).split(",");
String year = bits[0];
String month = bits[1];
String day = bits[2];
String current_rel_file = year + File.separator + month + File.separator + day + ".dat";
String line;
String stats_str = "";
if (record_type == RT_SESSION_START) {
// absolute values
for (int i = 0; i < line_stats.length; i++) {
stats_str += "," + line_stats[i];
line_stats_prev[i] = 0;
}
day_cache = null;
} else {
// relative values
long[] diffs = new long[STAT_ENTRY_COUNT];
for (int i = 0; i < line_stats.length; i++) {
long diff = line_stats[i] - line_stats_prev[i];
session_total += diff;
diffs[i] = diff;
stats_str += "," + diff;
line_stats_prev[i] = line_stats[i];
stat_averages[i].update(diff);
}
if (day_cache != null) {
if (day_cache.isForDay(year, month, day)) {
day_cache.addRecord(now_mins, diffs);
}
}
}
if (record_type != RT_SESSION_STATS) {
line =
(record_type == RT_SESSION_START ? "s," : "e,")
+ VERSION
+ ","
+ now_mins
+ stats_str;
} else {
line = stats_str.substring(1);
}
if (writer == null || !writer_rel_file.equals(current_rel_file)) {
// first open of a file or file switch
if (writer != null) {
// file switch
if (record_type != RT_SESSION_START) {
writer.println(line);
}
writer.close();
if (writer.checkError()) {
writer = null;
throw (new IOException("Write faled"));
}
writer = null;
}
// no point in opening a new file just to record the session-end
if (record_type != RT_SESSION_END) {
File file = new File(stats_dir, current_rel_file);
file.getParentFile().mkdirs();
writer = new PrintWriter(new FileWriter(file, true));
writer_rel_file = current_rel_file;
if (record_type == RT_SESSION_START) {
writer.println(line);
} else {
// first entry in a new file, files always start with a session-start so they
// can be processed in isolation so reset the session data and start a new one
st_p_sent += line_stats[0];
st_d_sent += line_stats[1];
st_p_received += line_stats[2];
st_d_received += line_stats[3];
st_dht_sent += line_stats[4];
st_dht_received += line_stats[5];
ss_p_sent += line_stats[0];
ss_d_sent += line_stats[1];
ss_p_received += line_stats[2];
ss_d_received += line_stats[3];
ss_dht_sent += line_stats[4];
ss_dht_received += line_stats[5];
stats_str = "";
long[] st_stats =
new long[] {
st_p_sent, st_d_sent, st_p_received, st_d_received, st_dht_sent, st_dht_received
};
for (int i = 0; i < st_stats.length; i++) {
stats_str += "," + st_stats[i];
line_stats_prev[i] = 0;
}
line = "s," + VERSION + "," + now_mins + stats_str;
writer.println(line);
}
}
} else {
writer.println(line);
}
} catch (Throwable e) {
Debug.out("Failed to write long term stats", e);
} finally {
if (writer != null) {
if (record_type == RT_SESSION_END) {
writer.close();
}
if (writer.checkError()) {
Debug.out("Failed to write long term stats");
writer.close();
writer = null;
} else {
if (record_type == RT_SESSION_END) {
writer = null;
}
}
}
}
}
if (record_type != RT_SESSION_END) {
final List<LongTermStatsListener> to_fire = new ArrayList<LongTermStatsListener>();
for (Object[] entry : listeners) {
long diff = session_total - (Long) entry[2];
if (diff >= (Long) entry[1]) {
entry[2] = session_total;
to_fire.add((LongTermStatsListener) entry[0]);
}
}
if (to_fire.size() > 0) {
dispatcher.dispatch(
new AERunnable() {
@Override
public void runSupport() {
for (LongTermStatsListener l : to_fire) {
try {
l.updated(LongTermStatsImpl.this);
} catch (Throwable e) {
Debug.out(e);
}
}
}
});
}
}
}