private void addRows(Scanner scanner, String type, Table trace) {
for (Entry<Key, Value> entry : scanner) {
RemoteSpan span = TraceFormatter.getRemoteSpan(entry);
if (span.description.equals(type)) {
trace.addRow(span, Long.valueOf(span.stop - span.start), span.svc + ":" + span.sender);
}
}
}
@Override
public void pageBody(HttpServletRequest req, HttpServletResponse resp, StringBuilder sb)
throws Exception {
final String type = getType(req);
int minutes = getMinutes(req);
long endTime = System.currentTimeMillis();
long startTime = endTime - minutes * 60 * 1000;
Entry<Scanner, UserGroupInformation> entry = getScanner(sb);
final Scanner scanner = entry.getKey();
if (scanner == null) {
return;
}
Range range =
new Range(
new Text("start:" + Long.toHexString(startTime)),
new Text("start:" + Long.toHexString(endTime)));
scanner.setRange(range);
final Table trace = new Table("trace", "Traces for " + getType(req));
trace.addSortableColumn("Start", new ShowTraceLinkType(), "Start Time");
trace.addSortableColumn("ms", new DurationType(), "Span time");
trace.addUnsortableColumn("Source", new StringType<String>(), "Service and location");
if (null != entry.getValue()) {
entry
.getValue()
.doAs(
new PrivilegedAction<Void>() {
@Override
public Void run() {
addRows(scanner, type, trace);
return null;
}
});
} else {
addRows(scanner, type, trace);
}
trace.generate(req, sb);
}
