/**
* Initializes the layer, creating internal structures for calculating grid location and so forth.
*
* <p>Subclasses shall implement {@link #initializeInternal(GridSetBroker)} for anything else
*/
@Override
public final boolean initialize(GridSetBroker gridSetBroker) {
if (this.expireCacheList == null) {
this.expireCacheList = new ArrayList<ExpirationRule>(1);
if (this.expireCache == null) {
expireCacheList.add(new ExpirationRule(0, GWCVars.CACHE_NEVER_EXPIRE));
} else {
int expireCacheInt = Integer.parseInt(expireCache);
if (expireCacheInt == GWCVars.CACHE_USE_WMS_BACKEND_VALUE) {
saveExpirationHeaders = true;
}
expireCacheList.add(new ExpirationRule(0, expireCacheInt));
}
}
if (this.expireClientsList == null) {
this.expireClientsList = new ArrayList<ExpirationRule>(1);
if (this.expireClients == null) {
expireClientsList.add(new ExpirationRule(0, 7200));
} else {
int expireClientsInt = Integer.parseInt(expireClients);
if (expireClientsInt == GWCVars.CACHE_USE_WMS_BACKEND_VALUE) {
saveExpirationHeaders = true;
} else if (expireClientsInt == GWCVars.CACHE_NEVER_EXPIRE) {
// One year should do
expireClientsInt = 3600 * 24 * 365;
}
expireClientsList.add(new ExpirationRule(0, expireClientsInt));
}
}
try {
// mimetypes
this.formats = new ArrayList<MimeType>();
if (mimeFormats != null) {
for (String fmt : mimeFormats) {
formats.add(MimeType.createFromFormat(fmt));
}
}
if (formats.size() == 0) {
formats.add(0, MimeType.createFromFormat("image/png"));
formats.add(1, MimeType.createFromFormat("image/jpeg"));
}
} catch (GeoWebCacheException gwce) {
log.error(gwce.getMessage());
gwce.printStackTrace();
}
if (subSets == null) {
subSets = new HashMap<String, GridSubset>();
}
if (this.gridSubsets != null) {
Iterator<XMLGridSubset> iter = gridSubsets.iterator();
while (iter.hasNext()) {
XMLGridSubset xmlGridSubset = iter.next();
GridSubset gridSubset = xmlGridSubset.getGridSubSet(gridSetBroker);
if (gridSubset == null) {
log.error(
xmlGridSubset.getGridSetName()
+ " is not known by the GridSetBroker, skipping for layer "
+ name);
} else {
subSets.put(gridSubset.getName(), gridSubset);
}
}
this.gridSubsets = null;
}
// Convert version 1.1.x and 1.0.x grid objects
if (grids != null && !grids.isEmpty()) {
Iterator<XMLOldGrid> iter = grids.values().iterator();
while (iter.hasNext()) {
GridSubset converted = iter.next().convertToGridSubset(gridSetBroker);
subSets.put(converted.getSRS().toString(), converted);
}
// Null it for the garbage collector
grids = null;
}
if (this.subSets.size() == 0) {
subSets.put(
gridSetBroker.WORLD_EPSG4326.getName(),
GridSubsetFactory.createGridSubSet(gridSetBroker.WORLD_EPSG4326));
subSets.put(
gridSetBroker.WORLD_EPSG3857.getName(),
GridSubsetFactory.createGridSubSet(gridSetBroker.WORLD_EPSG3857));
}
return initializeInternal(gridSetBroker);
}
GridSubset findBestGridSubset(WMSMapContent map) {
GetMapRequest req = map.getRequest();
Map formatOpts = req.getFormatOptions();
GridSetBroker gridSetBroker = gwc.getGridSetBroker();
GridSet gridSet = null;
// first check format options to see if explicitly specified
if (formatOpts.containsKey("gridset")) {
gridSet = gridSetBroker.get(formatOpts.get("gridset").toString());
}
// next check srs
if (gridSet == null) {
gridSet = gridSetBroker.get(req.getSRS().toUpperCase());
}
if (gridSet != null) {
return GridSubsetFactory.createGridSubSet(gridSet);
}
CoordinateReferenceSystem crs = map.getCoordinateReferenceSystem();
// look up epsg code
Integer epsgCode = null;
try {
epsgCode = CRS.lookupEpsgCode(crs, false);
} catch (Exception e) {
throw new ServiceException("Unable to determine epsg code for " + crs, e);
}
if (epsgCode == null) {
throw new ServiceException("Unable to determine epsg code for " + crs);
}
SRS srs = SRS.getSRS(epsgCode);
// figure out the appropriate grid sub set
Set<GridSubset> gridSubsets = new LinkedHashSet<GridSubset>();
for (MapLayerInfo l : req.getLayers()) {
TileLayer tl = gwc.getTileLayerByName(l.getName());
if (tl == null) {
throw new ServiceException("No tile layer for " + l.getName());
}
List<GridSubset> theseGridSubsets = tl.getGridSubsetsForSRS(srs);
if (gridSubsets.isEmpty()) {
gridSubsets.addAll(theseGridSubsets);
} else {
gridSubsets.retainAll(theseGridSubsets);
}
if (gridSubsets.isEmpty()) {
throw new ServiceException(
"No suitable " + epsgCode + " grid subset for " + req.getLayers());
}
}
if (gridSubsets.size() > 1) {
if (LOGGER.isLoggable(Level.WARNING)) {
StringBuilder msg = new StringBuilder("Found multiple grid subsets: ");
for (GridSubset gs : gridSubsets) {
msg.append(gs.getName()).append(", ");
}
msg.setLength(msg.length() - 2);
msg.append(". Choosing first.");
LOGGER.warning(msg.toString());
}
}
return gridSubsets.iterator().next();
}