@Override
public long isReady(long tid, Master environment) throws Exception {
try {
String namespaceId = Tables.getNamespaceId(environment.getInstance(), tableId);
return Utils.reserveNamespace(namespaceId, tid, false, false, TableOperation.DELETE)
+ Utils.reserveTable(tableId, tid, true, true, TableOperation.DELETE);
} catch (IllegalArgumentException ex) {
if (ex.getCause() != null && ex.getCause() instanceof TableNotFoundException) {
return 0;
}
throw ex;
}
}
@Override
public Repo<Master> call(long tid, Master environment) throws Exception {
try {
String namespaceId = Tables.getNamespaceId(environment.getInstance(), tableId);
TableManager.getInstance().transitionTableState(tableId, TableState.DELETING);
environment.getEventCoordinator().event("deleting table %s ", tableId);
return new CleanUp(tableId, namespaceId);
} catch (IllegalArgumentException ex) {
if (ex.getCause() != null && ex.getCause() instanceof TableNotFoundException) {
return null;
}
throw ex;
}
}
@Override
public Repo<Master> call(long id, Master master) throws Exception {
Instance instance = master.getInstance();
IZooReaderWriter zoo = ZooReaderWriter.getInstance();
Utils.tableNameLock.lock();
try {
Utils.checkNamespaceDoesNotExist(instance, newName, namespaceId, TableOperation.RENAME);
final String tap =
ZooUtil.getRoot(instance)
+ Constants.ZNAMESPACES
+ "/"
+ namespaceId
+ Constants.ZNAMESPACE_NAME;
zoo.mutate(
tap,
null,
null,
new Mutator() {
@Override
public byte[] mutate(byte[] current) throws Exception {
final String currentName = new String(current);
if (currentName.equals(newName))
return null; // assume in this case the operation is running again, so we are done
if (!currentName.equals(oldName)) {
throw new AcceptableThriftTableOperationException(
null,
oldName,
TableOperation.RENAME,
TableOperationExceptionType.NAMESPACE_NOTFOUND,
"Name changed while processing");
}
return newName.getBytes();
}
});
Tables.clearCache(instance);
} finally {
Utils.tableNameLock.unlock();
Utils.unreserveNamespace(namespaceId, id, true);
}
LoggerFactory.getLogger(RenameNamespace.class)
.debug("Renamed namespace " + namespaceId + " " + oldName + " " + newName);
return null;
}
@Override
public void undo(long tid, Master environment) throws Exception {
String namespaceId = Tables.getNamespaceId(environment.getInstance(), tableId);
Utils.unreserveNamespace(namespaceId, tid, false);
Utils.unreserveTable(tableId, tid, true);
}