@Override
public CNSSubscription getSubscription(String arn) throws Exception {
// read form index to get composite col-name
CmbColumnSlice<String, String> slice =
cassandraHandler.readColumnSlice(
AbstractDurablePersistence.CNS_KEYSPACE,
columnFamilySubscriptionsIndex,
arn,
null,
null,
1,
CMB_SERIALIZER.STRING_SERIALIZER,
CMB_SERIALIZER.STRING_SERIALIZER,
CMB_SERIALIZER.STRING_SERIALIZER);
if (slice != null) {
// get Column from main table
String colName = slice.getColumns().get(0).getName();
CnsSubscriptionProtocol protocol = getEndpointAndProtoIndexValProtocol(colName);
String endpoint = getEndpointAndProtoIndexValEndpoint(colName);
CmbComposite columnName = cassandraHandler.getCmbComposite(endpoint, protocol.name());
CmbColumn<CmbComposite, String> column =
cassandraHandler.readColumn(
AbstractDurablePersistence.CNS_KEYSPACE,
columnFamilySubscriptions,
Util.getCnsTopicArn(arn),
columnName,
CMB_SERIALIZER.STRING_SERIALIZER,
CMB_SERIALIZER.COMPOSITE_SERIALIZER,
CMB_SERIALIZER.STRING_SERIALIZER);
if (column != null) {
CNSSubscription s = extractSubscriptionFromColumn(column, Util.getCnsTopicArn(arn));
s.checkIsValid();
return s;
}
}
return null;
}
