/*package*/ static Fingerprint load(File file) throws IOException {
XmlFile configFile = getConfigFile(file);
if (!configFile.exists()) return null;
long start = 0;
if (logger.isLoggable(Level.FINE)) start = System.currentTimeMillis();
try {
Fingerprint f = (Fingerprint) configFile.read();
if (logger.isLoggable(Level.FINE))
logger.fine(
"Loading fingerprint " + file + " took " + (System.currentTimeMillis() - start) + "ms");
if (f.facets == null) f.facets = new PersistedList<FingerprintFacet>(f);
for (FingerprintFacet facet : f.facets) facet._setOwner(f);
return f;
} catch (IOException e) {
if (file.exists() && file.length() == 0) {
// Despite the use of AtomicFile, there are reports indicating that people often see
// empty XML file, presumably either due to file system corruption (perhaps by sudden
// power loss, etc.) or abnormal program termination.
// generally we don't want to wipe out user data just because we can't load it,
// but if the file size is 0, which is what's reported in HUDSON-2012, then it seems
// like recovering it silently by deleting the file is not a bad idea.
logger.log(Level.WARNING, "Size zero fingerprint. Disk corruption? " + configFile, e);
file.delete();
return null;
}
logger.log(Level.WARNING, "Failed to load " + configFile, e);
throw e;
}
}
