public ByteBuffer run(Retriever retriever) {
if (!retriever.getState().equals(Retriever.RETRIEVER_STATE_SUCCESSFUL)) return null;
HTTPRetriever htr = (HTTPRetriever) retriever;
if (htr.getResponseCode() == HttpURLConnection.HTTP_NO_CONTENT) {
// Mark tile as missing to avoid excessive attempts
MercatorTiledImageLayer.this.levels.markResourceAbsent(tile);
return null;
}
if (htr.getResponseCode() != HttpURLConnection.HTTP_OK) return null;
URLRetriever r = (URLRetriever) retriever;
ByteBuffer buffer = r.getBuffer();
String suffix = WWIO.makeSuffixForMimeType(htr.getContentType());
if (suffix == null) {
return null; // TODO: log error
}
String path = tile.getPath().substring(0, tile.getPath().lastIndexOf("."));
path += suffix;
final File outFile = WorldWind.getDataFileStore().newFile(path);
if (outFile == null) return null;
try {
WWIO.saveBuffer(buffer, outFile);
return buffer;
} catch (IOException e) {
e.printStackTrace(); // TODO: log error
return null;
}
}
protected boolean loadTile(Tile tile, java.net.URL url) {
if (WWIO.isFileOutOfDate(url, this.placeNameServiceSet.getExpiryTime())) {
// The file has expired. Delete it then request download of newer.
this.getDataFileStore().removeFile(url);
String message = Logging.getMessage("generic.DataFileExpired", url);
Logging.logger().fine(message);
return false;
}
PlaceNameChunk tileData;
synchronized (this.fileLock) {
tileData = readTileData(tile, url);
}
if (tileData == null) {
// Assume that something's wrong with the file and delete it.
this.getDataFileStore().removeFile(url);
tile.getPlaceNameService()
.markResourceAbsent(tile.getPlaceNameService().getTileNumber(tile.row, tile.column));
String message = Logging.getMessage("generic.DeletedCorruptDataFile", url);
Logging.logger().fine(message);
return false;
}
tile.setDataChunk(tileData);
WorldWind.getMemoryCache(Tile.class.getName()).add(tile.getFileCachePath(), tile);
return true;
}
protected void saveBuffer(java.nio.ByteBuffer buffer, java.io.File outFile)
throws java.io.IOException {
synchronized (this.fileLock) // sychronized with read of file in RequestTask.run()
{
WWIO.saveBuffer(buffer, outFile);
}
}
@Override
protected ByteBuffer handleXMLContent() throws IOException {
// Check for an exception report
String s = WWIO.byteBufferToString(this.getRetriever().getBuffer(), 1024, null);
if (s.contains("<ExceptionReport>")) {
// TODO: Parse the xml and include only the message text in the log message.
StringBuilder sb = new StringBuilder(this.getRetriever().getName());
sb.append("\n");
sb.append(WWIO.byteBufferToString(this.getRetriever().getBuffer(), 2048, null));
Logging.logger().warning(sb.toString());
return null;
}
this.saveBuffer();
return this.getRetriever().getBuffer();
}
private BufferedImage requestImage(MercatorTextureTile tile, String mimeType)
throws URISyntaxException {
String pathBase = tile.getPath().substring(0, tile.getPath().lastIndexOf("."));
String suffix = WWIO.makeSuffixForMimeType(mimeType);
String path = pathBase + suffix;
URL url = WorldWind.getDataFileStore().findFile(path, false);
if (url == null) // image is not local
return null;
if (WWIO.isFileOutOfDate(url, tile.getLevel().getExpiryTime())) {
// The file has expired. Delete it.
WorldWind.getDataFileStore().removeFile(url);
String message = Logging.getMessage("generic.DataFileExpired", url);
Logging.logger().fine(message);
} else {
try {
File imageFile = new File(url.toURI());
BufferedImage image = ImageIO.read(imageFile);
if (image == null) {
String message = Logging.getMessage("generic.ImageReadFailed", imageFile);
throw new RuntimeException(message);
}
this.levels.unmarkResourceAbsent(tile);
return image;
} catch (IOException e) {
// Assume that something's wrong with the file and delete it.
gov.nasa.worldwind.WorldWind.getDataFileStore().removeFile(url);
this.levels.markResourceAbsent(tile);
String message = Logging.getMessage("generic.DeletedCorruptDataFile", url);
Logging.logger().info(message);
}
}
return null;
}