// read in the index, create if it doesnt exist or is out of date
public static Grib1TimePartition factory(
TimePartitionCollection tpc, CollectionManager.Force force, Formatter f) throws IOException {
Grib1TimePartitionBuilder builder =
new Grib1TimePartitionBuilder(tpc.getCollectionName(), new File(tpc.getRoot()), tpc);
builder.readOrCreateIndex(force, f);
return builder.tp;
}
// called by tdm
public static boolean update(TimePartitionCollection tpc, Formatter f) throws IOException {
Grib1TimePartitionBuilder builder =
new Grib1TimePartitionBuilder(tpc.getCollectionName(), new File(tpc.getRoot()), tpc);
if (!builder.needsUpdate()) return false;
builder.readOrCreateIndex(CollectionManager.Force.always, f);
builder.gc.close();
return true;
}
private boolean createPartitionedIndex(Formatter f) throws IOException {
long start = System.currentTimeMillis();
// create partitions based on TimePartitionCollections object
for (CollectionManager dcm : tpc.makePartitions()) {
tp.addPartition(dcm);
}
List<TimePartition.Partition> bad = new ArrayList<TimePartition.Partition>();
for (TimePartition.Partition dc : tp.getPartitions()) {
try {
dc.makeGribCollection(f); // ensure collection has been read successfully
if (trace) f.format(" Open partition %s%n", dc.getDcm().getCollectionName());
} catch (Throwable t) {
logger.error(" Failed to open partition " + dc.getName(), t);
f.format(" FAIL on partition %s (remove) %n", dc.getDcm().getCollectionName());
bad.add(dc); // LOOK may be a file leak ?
}
}
// remove ones that failed
for (TimePartition.Partition p : bad) tp.removePartition(p);
// choose the "canonical" partition, aka prototype
int n = tp.getPartitions().size();
if (n == 0) {
logger.error(" Nothing in this partition = " + tp.getName());
f.format(" FAIL Partition empty collection = %s%n", tp.getName());
return false;
}
int idx = tpc.getProtoIndex(n);
TimePartition.Partition canon = tp.getPartitions().get(idx);
f.format(" Using canonical partition %s%n", canon.getDcm().getCollectionName());
// check consistency across vert and ens coords
if (!checkPartitions(canon, f)) {
logger.error(
" Partition check failed, index not written on {} message = {}",
tp.getName(),
f.toString());
f.format(" FAIL Partition check collection = %s%n", tp.getName());
return false;
}
// make the time coordinates, place results into canon
createPartitionedTimeCoordinates(canon, f);
// ready to write the index file
writeIndex(canon, f);
// close open gc's
tp.cleanup();
long took = System.currentTimeMillis() - start;
f.format(" CreatePartitionedIndex took %d msecs%n", took);
return true;
}
/**
* write new index if needed
*
* @param tpc use this collection
* @param force force index
* @param f put status messagess here
* @return true if index was written
* @throws IOException on error
*/
public static boolean writeIndexFile(
TimePartitionCollection tpc, CollectionManager.Force force, Formatter f) throws IOException {
Grib1TimePartitionBuilder builder = null;
try {
builder =
new Grib1TimePartitionBuilder(tpc.getCollectionName(), new File(tpc.getRoot()), tpc);
return builder.readOrCreateIndex(force, f);
} finally {
if ((builder != null) && (builder.tp != null)) builder.tp.close();
}
}
private Grib1TimePartitionBuilder(String name, File directory, TimePartitionCollection tpc) {
FeatureCollectionConfig.GribConfig config =
(tpc == null)
? null
: (FeatureCollectionConfig.GribConfig)
tpc.getAuxInfo(FeatureCollectionConfig.AUX_GRIB_CONFIG);
this.tp = new Grib1TimePartition(name, directory, config);
this.gc = tp;
this.tpc = tpc;
}
private boolean needsUpdate(long collectionLastModified, Formatter f) throws IOException {
CollectionManager.ChangeChecker cc = Grib1Index.getChangeChecker();
for (CollectionManager dcm :
tpc.makePartitions()) { // LOOK not really right, since we dont know if these files are the
// same as in the index
File idxFile = GribCollection.getIndexFile(dcm);
if (!idxFile.exists()) return true;
if (collectionLastModified < idxFile.lastModified()) return true;
for (MFile mfile : dcm.getFiles()) {
if (cc.hasChangedSince(mfile, idxFile.lastModified())) return true;
}
}
return false;
}
