private static void putTablespace(Tablespace space, boolean override) {
// It is a device to keep the relationship among name, URI, and tablespace 1:1:1.
boolean nameExist = SPACES_URIS_MAP.containsKey(space.getName());
boolean uriExist = TABLE_SPACES.containsKey(space.uri);
boolean mismatch = nameExist && !SPACES_URIS_MAP.get(space.getName()).equals(space.getUri());
mismatch = mismatch || uriExist && TABLE_SPACES.get(space.uri).equals(space);
if (!override && mismatch) {
throw new RuntimeException("Name or URI of Tablespace must be unique.");
}
SPACES_URIS_MAP.put(space.getName(), space.getUri());
// We must guarantee that the same uri results in the same tablespace instance.
TABLE_SPACES.put(space.getUri(), space);
}
@VisibleForTesting
public static Optional<Tablespace> addTableSpaceForTest(Tablespace space) {
Tablespace existing;
synchronized (SPACES_URIS_MAP) {
String scheme = UriUtil.getScheme(space.getUri());
if (!TABLE_SPACE_HANDLERS.containsKey(scheme)) {
TABLE_SPACE_HANDLERS.put(scheme, space.getClass());
}
// Remove existing one
SPACES_URIS_MAP.remove(space.getName());
existing = TABLE_SPACES.remove(space.getUri());
// Add anotherone for test
registerTableSpace(space.name, space.uri, space.getConfig(), true, true);
}
// if there is an existing one, return it.
return Optional.fromNullable(existing);
}