private void seedTiles(StorageBroker storageBroker, TileRange tr, final WMSLayer tl)
throws Exception {
final String layerName = tl.getName();
// define the meta tile size to 1,1 so we hit all the tiles
final TileRangeIterator trIter = new TileRangeIterator(tr, tl.getMetaTilingFactors());
long[] gridLoc = trIter.nextMetaGridLocation(new long[3]);
while (gridLoc != null) {
Map<String, String> fullParameters = tr.getParameters();
final ConveyorTile tile =
new ConveyorTile(
storageBroker,
layerName,
tr.getGridSetId(),
gridLoc,
tr.getMimeType(),
fullParameters,
null,
null);
tile.setTileLayer(tl);
tl.seedTile(tile, false);
gridLoc = trIter.nextMetaGridLocation(gridLoc);
}
}
private List<ConveyorTile> getTiles(StorageBroker storageBroker, TileRange tr, final WMSLayer tl)
throws Exception {
final String layerName = tl.getName();
// define the meta tile size to 1,1 so we hit all the tiles
final TileRangeIterator trIter = new TileRangeIterator(tr, new int[] {1, 1});
long[] gridLoc = trIter.nextMetaGridLocation(new long[3]);
// six concurrent requests max
ExecutorService requests = Executors.newFixedThreadPool(6);
ExecutorCompletionService completer = new ExecutorCompletionService(requests);
List<Future<ConveyorTile>> futures = new ArrayList<Future<ConveyorTile>>();
while (gridLoc != null) {
Map<String, String> fullParameters = tr.getParameters();
final ConveyorTile tile =
new ConveyorTile(
storageBroker,
layerName,
tr.getGridSetId(),
gridLoc,
tr.getMimeType(),
fullParameters,
null,
null);
futures.add(
completer.submit(
new Callable<ConveyorTile>() {
public ConveyorTile call() throws Exception {
try {
return tl.getTile(tile);
} catch (OutsideCoverageException oce) {
return null;
}
}
}));
gridLoc = trIter.nextMetaGridLocation(gridLoc);
}
// these assertions could be externalized
List<ConveyorTile> results = new ArrayList<ConveyorTile>();
for (int i = 0; i < futures.size(); i++) {
ConveyorTile get = futures.get(i).get();
if (get != null) {
results.add(get);
}
}
requests.shutdown();
return results;
}