/**
* Determines the storage directory for a file, using its spatial properties run through the
* Geohash algorithm.
*
* <p>The resulting format is xx/xxx, which is specific to the NOAA NAM dataset, because this will
* place each unique grid point in its own directory.
*/
private static String getStorageDir(String outputDir, Metadata meta) {
Coordinates coords = meta.getSpatialProperties().getCoordinates();
String location = GeoHash.encode(coords.getLatitude(), coords.getLongitude(), 10);
String subDir = location.substring(0, 2) + "/" + location.substring(2, 5);
return outputDir + "/" + subDir;
}
/** Creates a block/metadata pair subset for indexing. */
public static Block createBlock(String name, Metadata meta) throws IOException {
Metadata m = new Metadata(name);
addIndexField("visibility", meta, m);
addIndexField("pressure", meta, m);
addIndexField("total_precipitation", meta, m);
addIndexField("precipitable_water", meta, m);
addIndexField("temperature_surface", meta, m);
addIndexField("total_cloud_cover", meta, m);
addIndexField("snow_depth", meta, m);
m.setTemporalProperties(meta.getTemporalProperties());
m.setSpatialProperties(meta.getSpatialProperties());
Block block = new Block("samples", m, Serializer.serialize(meta));
return block;
}