public static void fromCRAWDAD(
LinkTrace links,
InputStream in,
double timeMul,
long ticsPerSecond,
long offset,
IdGenerator idGen)
throws IOException {
StatefulWriter<LinkEvent, Link> linkWriter = links.getWriter();
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = br.readLine()) != null) {
String[] elems = line.split("[ \t]+");
Integer id1 = idGen.getInternalId(elems[0]);
Integer id2 = idGen.getInternalId(elems[1]);
long begin = (long) (Long.parseLong(elems[2]) * timeMul) + offset;
long end = (long) (Long.parseLong(elems[3]) * timeMul) + offset;
linkWriter.queue(begin, new LinkEvent(id1, id2, LinkEvent.UP));
linkWriter.queue(end, new LinkEvent(id1, id2, LinkEvent.DOWN));
}
linkWriter.flush();
linkWriter.setProperty(Trace.timeUnitKey, Units.toTimeUnit(ticsPerSecond));
idGen.writeTraceInfo(linkWriter);
linkWriter.close();
br.close();
}
@Override
public void convert() throws IOException {
final AdjacencyMap.Arcs<ArcEvent> to_bring_down = new AdjacencyMap.Arcs<ArcEvent>();
final StatefulWriter<ArcEvent, Arc> upper_writer = _upper.getWriter();
final StatefulReader<ArcEvent, Arc> lower_reader = _lower.getReader();
lower_reader.seek(_lower.minTime());
upper_writer.setInitState(_lower.minTime(), lower_reader.referenceState());
long last_time = _lower.minTime();
long time = last_time;
final long eta = _lower.eta();
while (lower_reader.hasNext()) {
time = lower_reader.nextTime();
if (time > last_time + eta) {
for (final ArcEvent aev : to_bring_down.values()) upper_writer.queue(last_time, aev);
to_bring_down.clear();
}
boolean first_down = true;
for (final ArcEvent aev : lower_reader.next()) { // assumes that all
// UP event come
// before all DOWN
// events
final Arc a = aev.arc();
if (aev.isUp()) {
if (to_bring_down.containsKey(a)) to_bring_down.remove(a);
else upper_writer.queue(time, aev);
} else { // down event. Just queue for next time step
if (first_down) { // first flush previous time's down events
for (final ArcEvent dev : to_bring_down.values()) upper_writer.queue(last_time, dev);
to_bring_down.clear();
first_down = false;
}
to_bring_down.put(a, aev);
}
}
upper_writer.flush(last_time);
last_time = time;
}
// flush final events
for (final ArcEvent dev : to_bring_down.values()) upper_writer.queue(last_time, dev);
upper_writer.flush();
upper_writer.setPropertiesFromTrace(_lower);
_lower.copyOverTraceInfo(upper_writer);
upper_writer.close();
lower_reader.close();
}