static VoldemortFilter getFilterFromRequest(
VAdminProto.VoldemortFilter request,
VoldemortConfig voldemortConfig,
NetworkClassLoader networkClassLoader) {
VoldemortFilter filter = null;
byte[] classBytes = ProtoUtils.decodeBytes(request.getData()).get();
String className = request.getName();
logger.debug("Attempt to load VoldemortFilter class:" + className);
try {
if (voldemortConfig.isNetworkClassLoaderEnabled()) {
// TODO: network class loader was throwing NoClassDefFound for
// voldemort.server package classes, Need testing and fixes
logger.warn("NetworkLoader is experimental and should not be used for now.");
Class<?> cl = networkClassLoader.loadClass(className, classBytes, 0, classBytes.length);
filter = (VoldemortFilter) cl.newInstance();
} else {
Class<?> cl = Thread.currentThread().getContextClassLoader().loadClass(className);
filter = (VoldemortFilter) cl.newInstance();
}
} catch (Exception e) {
throw new VoldemortException("Failed to load and instantiate the filter class", e);
}
return filter;
}
public VAdminProto.GetMetadataResponse handleGetMetadata(VAdminProto.GetMetadataRequest request) {
VAdminProto.GetMetadataResponse.Builder response = VAdminProto.GetMetadataResponse.newBuilder();
try {
ByteArray key = ProtoUtils.decodeBytes(request.getKey());
String keyString = ByteUtils.getString(key.get(), "UTF-8");
if (MetadataStore.METADATA_KEYS.contains(keyString)) {
List<Versioned<byte[]>> versionedList = metadataStore.get(key);
int size = (versionedList.size() > 0) ? 1 : 0;
if (size > 0) {
Versioned<byte[]> versioned = versionedList.get(0);
response.setVersion(ProtoUtils.encodeVersioned(versioned));
}
} else {
throw new VoldemortException(
"Metadata Key passed " + keyString + " is not handled yet ...");
}
} catch (VoldemortException e) {
response.setError(ProtoUtils.encodeError(errorCodeMapper, e));
logger.error("handleGetMetadata failed for request(" + request.toString() + ")", e);
}
return response.build();
}
private Message handleGetVersion(GetRequest request, Store<ByteArray, byte[]> store) {
VProto.GetVersionResponse.Builder response = VProto.GetVersionResponse.newBuilder();
try {
List<Version> versions = store.getVersions(ProtoUtils.decodeBytes(request.getKey()));
for (Version version : versions) response.addVersions(ProtoUtils.encodeClock(version));
} catch (VoldemortException e) {
response.setError(ProtoUtils.encodeError(getErrorMapper(), e));
}
return response.build();
}
private VProto.GetResponse handleGet(VProto.GetRequest request, Store<ByteArray, byte[]> store) {
VProto.GetResponse.Builder response = VProto.GetResponse.newBuilder();
try {
List<Versioned<byte[]>> values = store.get(ProtoUtils.decodeBytes(request.getKey()));
for (Versioned<byte[]> versioned : values)
response.addVersioned(ProtoUtils.encodeVersioned(versioned));
} catch (VoldemortException e) {
response.setError(ProtoUtils.encodeError(getErrorMapper(), e));
}
return response.build();
}
private VProto.PutResponse handlePut(VProto.PutRequest request, Store<ByteArray, byte[]> store) {
VProto.PutResponse.Builder response = VProto.PutResponse.newBuilder();
try {
ByteArray key = ProtoUtils.decodeBytes(request.getKey());
Versioned<byte[]> value = ProtoUtils.decodeVersioned(request.getVersioned());
store.put(key, value);
} catch (VoldemortException e) {
response.setError(ProtoUtils.encodeError(getErrorMapper(), e));
}
return response.build();
}
private VProto.DeleteResponse handleDelete(
VProto.DeleteRequest request, Store<ByteArray, byte[]> store) {
VProto.DeleteResponse.Builder response = VProto.DeleteResponse.newBuilder();
try {
boolean success =
store.delete(
ProtoUtils.decodeBytes(request.getKey()),
ProtoUtils.decodeClock(request.getVersion()));
response.setSuccess(success);
} catch (VoldemortException e) {
response.setSuccess(false);
response.setError(ProtoUtils.encodeError(getErrorMapper(), e));
}
return response.build();
}
private VProto.GetAllResponse handleGetAll(
VProto.GetAllRequest request, Store<ByteArray, byte[]> store) {
VProto.GetAllResponse.Builder response = VProto.GetAllResponse.newBuilder();
try {
List<ByteArray> keys = new ArrayList<ByteArray>(request.getKeysCount());
for (ByteString string : request.getKeysList()) keys.add(ProtoUtils.decodeBytes(string));
Map<ByteArray, List<Versioned<byte[]>>> values = store.getAll(keys);
for (Map.Entry<ByteArray, List<Versioned<byte[]>>> entry : values.entrySet()) {
VProto.KeyedVersions.Builder keyedVersion =
VProto.KeyedVersions.newBuilder().setKey(ProtoUtils.encodeBytes(entry.getKey()));
for (Versioned<byte[]> version : entry.getValue())
keyedVersion.addVersions(ProtoUtils.encodeVersioned(version));
response.addValues(keyedVersion);
}
} catch (VoldemortException e) {
response.setError(ProtoUtils.encodeError(getErrorMapper(), e));
}
return response.build();
}
public VAdminProto.UpdateMetadataResponse handleUpdateMetadata(
VAdminProto.UpdateMetadataRequest request) {
VAdminProto.UpdateMetadataResponse.Builder response =
VAdminProto.UpdateMetadataResponse.newBuilder();
try {
ByteArray key = ProtoUtils.decodeBytes(request.getKey());
String keyString = ByteUtils.getString(key.get(), "UTF-8");
if (MetadataStore.METADATA_KEYS.contains(keyString)) {
Versioned<byte[]> versionedValue = ProtoUtils.decodeVersioned(request.getVersioned());
metadataStore.put(new ByteArray(ByteUtils.getBytes(keyString, "UTF-8")), versionedValue);
}
} catch (VoldemortException e) {
response.setError(ProtoUtils.encodeError(errorCodeMapper, e));
logger.error("handleUpdateMetadata failed for request(" + request.toString() + ")", e);
}
return response.build();
}