/**
* Read FFMPEG metadata from the object if it exists
*
* @param object: The object to extract data from
*/
private void readMetadata(DigitalObject object) {
Set<String> pids = object.getPayloadIdList();
if (pids.contains(METADATA_PAYLOAD)) {
try {
Payload payload = object.getPayload(METADATA_PAYLOAD);
JsonConfigHelper data = new JsonConfigHelper(payload.open());
payload.close();
oldMetadata = data.getJsonMap("outputs");
// for (String k : oldMetadata.keySet()) {
// log.debug("\n====\n{}\n===\n{}", k, oldMetadata.get(k));
// }
} catch (IOException ex) {
log.error("Error parsing metadata JSON: ", ex);
} catch (StorageException ex) {
log.error("Error accessing metadata payload: ", ex);
}
}
}
/**
* Stream data from specified payload into a file in our temp cache.
*
* @param object: The digital object to use
* @param pid: The payload ID to extract
* @return File: The cached File
* @throws FileNotFoundException: If accessing the cache fails
* @throws StorageException: If accessing the object in storage fails
* @throws IOException: If the data copy fails
*/
private File cacheFile(DigitalObject object, String pid)
throws FileNotFoundException, StorageException, IOException {
// Get our cache location
File file = new File(outputDir, pid);
FileOutputStream tempFileOut = new FileOutputStream(file);
// Get payload from storage
Payload payload = object.getPayload(pid);
try {
// Copy to cache
IOUtils.copy(payload.open(), tempFileOut);
} catch (IOException ex) {
payload.close();
throw ex;
}
// Close and return
payload.close();
tempFileOut.close();
return file;
}