Examples with Delegate javax.decorator.Delegate used on opensource projects

Example 1 with Delegate

use of javax.decorator.Delegate in project indy by Commonjava.

the class IndexingContentManagerDecorator method retrieve.

@Override
public Transfer retrieve(final ArtifactStore store, final String path, final EventMetadata eventMetadata) throws IndyWorkflowException {
    Logger logger = LoggerFactory.getLogger(getClass());
    logger.trace("Looking for indexed path: {} in: {}", path, store.getKey());
    Transfer transfer = getIndexedTransfer(store.getKey(), null, path, TransferOperation.DOWNLOAD);
    if (transfer != null) {
        logger.debug("Found indexed transfer: {}. Returning.", transfer);
        return transfer;
    }
    StoreType type = store.getKey().getType();
    if (StoreType.group == type) {
        ConcreteResource resource = new ConcreteResource(LocationUtils.toLocation(store), path);
        if (nfc.isMissing(resource)) {
            logger.debug("{} is marked as missing. Returning null.", resource);
            return null;
        }
        logger.debug("No group index hits. Devolving to member store indexes.");
        KeyedLocation location = LocationUtils.toLocation(store);
        SpecialPathInfo specialPathInfo = specialPathManager.getSpecialPathInfo(location, path, store.getPackageType());
        if (specialPathInfo == null || !specialPathInfo.isMergable()) {
            transfer = getIndexedMemberTransfer((Group) store, path, TransferOperation.DOWNLOAD, (member) -> {
                try {
                    return delegate.retrieve(member, path);
                } catch (IndyWorkflowException e) {
                    logger.error(String.format("Failed to retrieve() for member path: %s:%s. Reason: %s", member.getKey(), path, e.getMessage()), e);
                }
                return null;
            });
            if (transfer != null) {
                nfc.clearMissing(resource);
                return transfer;
            }
            logger.debug("No index hits. Delegating to main content manager for: {} in: {}", path, store);
        } else {
            logger.debug("Merged content. Delegating to main content manager for: {} in: {}", path, store);
            transfer = delegate.retrieve(store, path, eventMetadata);
            if (transfer == null) {
                nfc.addMissing(resource);
            }
            return transfer;
        }
    }
    transfer = delegate.retrieve(store, path, eventMetadata);
    if (transfer != null) {
        logger.debug("Got transfer from delegate: {} (will index)", transfer);
        indexManager.indexTransferIn(transfer, store.getKey());
    }
    logger.debug("Returning transfer: {}", transfer);
    return transfer;
}