public List<StorageItem> doRetrieveItems(ResourceStoreRequest request)
throws GroupItemNotFoundException, StorageException {
ArrayList<StorageItem> items = new ArrayList<StorageItem>();
RepositoryItemUid uid = createUid(request.getRequestPath());
final boolean isRequestGroupLocalOnly =
request.isRequestGroupLocalOnly()
|| uid.getBooleanAttributeValue(IsGroupLocalOnlyAttribute.class);
final HashMap<Repository, Throwable> memberThrowables = new HashMap<Repository, Throwable>();
if (!isRequestGroupLocalOnly) {
if (USE_CHARGER_FOR_GROUP_REQUESTS) {
List<Callable<StorageItem>> callables = new ArrayList<Callable<StorageItem>>();
for (Repository repository : getRequestRepositories(request)) {
if (!request.getProcessedRepositories().contains(repository.getId())) {
callables.add(new ItemRetrieveCallable(getLogger(), repository, request));
} else {
if (getLogger().isDebugEnabled()) {
getLogger()
.debug(
String.format(
"Repository %s member of group %s was already processed during this request! Skipping it from processing. Request: %s",
RepositoryStringUtils.getHumanizedNameString(repository),
RepositoryStringUtils.getHumanizedNameString(this),
request.toString()));
}
}
}
try {
return chargerHolder
.getCharger()
.submit(callables, new AllArrivedChargeStrategy<StorageItem>(), this)
.getResult();
} catch (RejectedExecutionException e) {
// this will not happen
} catch (StorageException e) {
throw e;
} catch (Exception e) {
// will not happen, ItemRetrieveCallable supresses all except StorageException!
// just to make compiler happy
throw new LocalStorageException("Ouch!", e);
}
} else {
for (Repository repository : getRequestRepositories(request)) {
if (!request.getProcessedRepositories().contains(repository.getId())) {
try {
StorageItem item = repository.retrieveItem(false, request);
items.add(item);
} catch (ItemNotFoundException e) {
// ignored, but bookkeeping happens now
memberThrowables.put(repository, e);
} catch (RepositoryNotAvailableException e) {
if (getLogger().isDebugEnabled()) {
getLogger()
.debug(
RepositoryStringUtils.getFormattedMessage(
"Member repository %s is not available, request failed.",
e.getRepository()));
}
// ignored, but bookkeeping happens now
memberThrowables.put(repository, e);
} catch (StorageException e) {
throw e;
} catch (IllegalOperationException e) {
getLogger().warn("Member repository request failed", e);
// ignored, but bookkeeping happens now
memberThrowables.put(repository, e);
}
} else {
if (getLogger().isDebugEnabled()) {
getLogger()
.debug(
String.format(
"Repository %s member of group %s was already processed during this request! Skipping it from processing. Request: %s",
RepositoryStringUtils.getHumanizedNameString(repository),
RepositoryStringUtils.getHumanizedNameString(this),
request.toString()));
}
}
}
}
}
if (items.isEmpty()) {
if (!isRequestGroupLocalOnly) {
throw new GroupItemNotFoundException(request, this, memberThrowables);
} else {
throw new GroupItemNotFoundException(
reasonFor(
request,
this,
"The %s not found in local storage of group repository %s (no member processing happened).",
request.getRequestPath(),
this),
memberThrowables);
}
}
return items;
}
