public InternalCacheEntry retrieveFromRemoteSource(Object key, InvocationContext ctx)
throws Exception {
ClusteredGetCommand get = cf.buildClusteredGetCommand(key, ctx.getFlags());
List<Address> targets = locate(key);
targets.remove(getSelf());
ResponseFilter filter = new ClusteredGetResponseValidityFilter(targets);
Map<Address, Response> responses =
rpcManager.invokeRemotely(
targets,
get,
ResponseMode.SYNCHRONOUS,
configuration.getSyncReplTimeout(),
false,
filter);
if (!responses.isEmpty()) {
for (Response r : responses.values()) {
if (r instanceof SuccessfulResponse) {
InternalCacheValue cacheValue =
(InternalCacheValue) ((SuccessfulResponse) r).getResponseValue();
return cacheValue.toInternalCacheEntry(key);
}
}
}
return null;
}
private InternalCacheEntry unmarshall(Object o, Object key)
throws IOException, ClassNotFoundException {
if (o == null) return null;
byte b[] = (byte[]) o;
InternalCacheValue v = (InternalCacheValue) getMarshaller().objectFromByteBuffer(b);
return v.toInternalCacheEntry(key);
}
public InternalCacheEntry load(Object key) throws CacheLoaderException {
if (!(isCacheReady() && isLocalCall())) return null;
ClusteredGetCommand clusteredGetCommand = new ClusteredGetCommand(key, cache.getName());
Collection<Response> responses = doRemoteCall(clusteredGetCommand);
if (responses.isEmpty()) return null;
// Remove duplicates before deciding if multiple responses were received
Set<Response> setResponses = new HashSet(responses);
if (setResponses.size() > 1)
throw new CacheLoaderException(
String.format(
"Responses contains more than 1 element and these elements are not equal, so can't decide which one to use: %s",
setResponses));
for (Response r : setResponses) {
if (r.isSuccessful() && r instanceof SuccessfulResponse) {
InternalCacheValue value = (InternalCacheValue) ((SuccessfulResponse) r).getResponseValue();
return value.toInternalCacheEntry(key);
}
}
String message = "Unknown responses from remote cache: " + responses;
log.error(message);
throw new CacheLoaderException(message);
}
