public Map<String, Double> getLoadStatus() {
// find available segments
Map<String, Set<DataSegment>> availableSegments = Maps.newHashMap();
for (DataSegment dataSegment : getAvailableDataSegments()) {
Set<DataSegment> segments = availableSegments.get(dataSegment.getDataSource());
if (segments == null) {
segments = Sets.newHashSet();
availableSegments.put(dataSegment.getDataSource(), segments);
}
segments.add(dataSegment);
}
// find segments currently loaded
Map<String, Set<DataSegment>> segmentsInCluster = Maps.newHashMap();
for (DruidServer druidServer : serverInventoryView.getInventory()) {
for (DruidDataSource druidDataSource : druidServer.getDataSources()) {
Set<DataSegment> segments = segmentsInCluster.get(druidDataSource.getName());
if (segments == null) {
segments = Sets.newHashSet();
segmentsInCluster.put(druidDataSource.getName(), segments);
}
segments.addAll(druidDataSource.getSegments());
}
}
// compare available segments with currently loaded
Map<String, Double> loadStatus = Maps.newHashMap();
for (Map.Entry<String, Set<DataSegment>> entry : availableSegments.entrySet()) {
String dataSource = entry.getKey();
Set<DataSegment> segmentsAvailable = entry.getValue();
Set<DataSegment> loadedSegments = segmentsInCluster.get(dataSource);
if (loadedSegments == null) {
loadedSegments = Sets.newHashSet();
}
Set<DataSegment> unloadedSegments = Sets.difference(segmentsAvailable, loadedSegments);
loadStatus.put(
dataSource,
100
* ((double) (segmentsAvailable.size() - unloadedSegments.size())
/ (double) segmentsAvailable.size()));
}
return loadStatus;
}
