/**
* Clears out everything associated with this resource bundle in the hopes that we can download it
* afresh and everything will work the next time around.
*/
public void wipeBundle(boolean deleteJar) {
// clear out our cache directory
if (_cache != null) {
FileUtil.recursiveClean(_cache);
}
// delete our unpack stamp file
if (_unpacked != null) {
_unpacked.delete();
}
// clear out any .jarv file that Getdown might be maintaining so
// that we ensure that it is revalidated
File vfile = new File(FileUtil.resuffix(_source, ".jar", ".jarv"));
if (vfile.exists() && !vfile.delete()) {
log.warning("Failed to delete vfile", "file", vfile);
}
// close and delete our source jar file
if (deleteJar && _source != null) {
closeJar();
if (!_source.delete()) {
log.warning("Failed to delete source", "source", _source, "exists", _source.exists());
}
}
}
/**
* Called by the resource manager once it has ensured that our resource jar file is up to date and
* ready for reading.
*
* @return true if we successfully unpacked our resources, false if we encountered errors in doing
* so.
*/
public boolean sourceIsReady() {
// make a note of our source's last modification time
_sourceLastMod = _source.lastModified();
// if we are unpacking files, the time to do so is now
if (_unpacked != null && _unpacked.lastModified() != _sourceLastMod) {
try {
resolveJarFile();
} catch (IOException ioe) {
log.warning("Failure resolving jar file", "source", _source, ioe);
wipeBundle(true);
return false;
}
log.info("Unpacking into " + _cache + "...");
if (!_cache.exists()) {
if (!_cache.mkdir()) {
log.warning("Failed to create bundle cache directory", "dir", _cache);
closeJar();
// we are hopelessly f****d
return false;
}
} else {
FileUtil.recursiveClean(_cache);
}
// unpack the jar file (this will close the jar when it's done)
if (!FileUtil.unpackJar(_jarSource, _cache)) {
// if something went awry, delete everything in the hopes
// that next time things will work
wipeBundle(true);
return false;
}
// if everything unpacked smoothly, create our unpack stamp
try {
_unpacked.createNewFile();
if (!_unpacked.setLastModified(_sourceLastMod)) {
log.warning("Failed to set last mod on stamp file", "file", _unpacked);
}
} catch (IOException ioe) {
log.warning("Failure creating stamp file", "file", _unpacked, ioe);
// no need to stick a fork in things at this point
}
}
return true;
}
