/**
* @param request The archive request to handle.
* @param results The previous identification results for the archive format.
* @return
*/
private boolean handleArchive(
IdentificationRequest request, IdentificationResultCollection results) {
boolean jobCountDecremented = false;
String archiveFormat = getArchiveFormat(results);
if (archiveFormat != null) {
results.setArchive(true);
ResourceId id = resultHandler.handle(results);
jobCounter.incrementPostProcess();
RequestIdentifier identifier = request.getIdentifier();
identifier.setResourceId(id);
if (identifier.getAncestorId() == null) {
identifier.setAncestorId(id.getId());
}
submissionQueue.add(request.getIdentifier());
jobCounter.decrement();
jobCountDecremented = true;
try {
// BNO: Does this always return the same archive handler for any given container format?
// And will it end up using the same submission gateway, or a new one with a different
// thread pool?
ArchiveHandler handler = archiveHandlerFactory.getHandler(archiveFormat);
handler.handle(request);
// CHECKSTYLE:OFF
} catch (Exception e) {
// CHECKSTYLE:ON
String causeMessage = "";
if (e.getCause() != null) {
causeMessage = e.getCause().getMessage();
}
final String message =
String.format(
ARCHIVE_ERROR,
archiveFormat,
request.getIdentifier().getUri().toString(),
e.getMessage(),
causeMessage);
log.warn(message);
resultHandler.handleError(
new IdentificationException(request, IdentificationErrorType.OTHER, e));
} finally {
submissionQueue.remove(request.getIdentifier());
jobCounter.decrementPostProcess();
}
} else {
ResourceId id = resultHandler.handle(results);
request.getIdentifier().setNodeId(id.getId());
}
return jobCountDecremented;
}
private IdentificationResultCollection handleContainer(
IdentificationRequest request, IdentificationResultCollection results) throws IOException {
// process a container format (ole2, odf, ooxml etc)
String containerFormat = getContainerFormat(results);
try {
if (containerFormatResolver != null && containerFormat != null) {
ContainerIdentifier containerIdentifier =
containerIdentifierFactory.getIdentifier(containerFormat);
containerIdentifier.setMaxBytesToScan(maxBytesToScan);
IdentificationResultCollection containerResults = containerIdentifier.submit(request);
droidCore.removeLowerPriorityHits(containerResults);
droidCore.checkForExtensionsMismatches(containerResults, request.getExtension());
containerResults.setFileLength(request.size());
containerResults.setRequestMetaData(request.getRequestMetaData());
return containerResults.getResults().isEmpty() ? null : containerResults;
}
// CHECKSTYLE:OFF - rules say don't catch this, but other code keeps on throwing them.
// Don't prejudice any results so far because other code isn't following 'the rules'.
} catch (Exception e) {
// CHECKSTYLE:ON
String causeMessage = "";
if (e.getCause() != null) {
causeMessage = e.getCause().getMessage();
}
final String message =
String.format(
CONTAINER_ERROR,
containerFormat,
request.getIdentifier().getUri().toString(),
e.getMessage(),
causeMessage);
log.warn(message);
}
return null;
}
private void closeRequest() {
requests.remove(request);
try {
request.close();
} catch (IOException e) {
log.error(String.format("Error closing request [%s]", request.getIdentifier().getUri()), e);
}
}
@Override
protected void done() {
boolean jobCountDecremented = false;
try {
generateHash(request);
IdentificationResultCollection results = get();
IdentificationResultCollection containerResults = handleContainer(request, results);
if (containerResults == null) {
// no container results - process the normal results.
droidCore.removeLowerPriorityHits(results);
results = handleExtensions(request, results);
// Are we processing archive formats?
if ((processArchives || processWebArchives) && archiveFormatResolver != null) {
jobCountDecremented = handleArchive(request, results);
} else { // just process the results so far:
results.setArchive(getArchiveFormat(results) != null);
ResourceId id = resultHandler.handle(results);
request.getIdentifier().setResourceId(id);
}
} else { // we have possible container formats:
droidCore.removeLowerPriorityHits(containerResults);
containerResults = handleExtensions(request, containerResults);
ResourceId id = resultHandler.handle(containerResults);
request.getIdentifier().setResourceId(id);
}
} catch (ExecutionException e) {
final Throwable cause = e.getCause();
log.error(cause.getStackTrace(), cause);
resultHandler.handleError(
new IdentificationException(request, IdentificationErrorType.OTHER, cause));
} catch (InterruptedException e) {
log.debug(e);
} catch (IOException e) {
resultHandler.handleError(
new IdentificationException(request, IdentificationErrorType.OTHER, e));
} finally {
closeRequest();
if (!jobCountDecremented) {
jobCounter.decrement();
}
}
}
