/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ambari.server.topology.validators;
import java.util.HashSet;
import java.util.Set;
import org.apache.ambari.server.topology.ClusterTopology;
import org.apache.ambari.server.topology.InvalidTopologyException;
import org.apache.ambari.server.topology.TopologyValidator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Validates configuration types related to services specified in the blueprint.
* If the cluster creation template contains configuration types that are not related to services in the blueprint the
* validator fails interrupting the cluster provisioning.
*/
public class ClusterConfigTypeValidator implements TopologyValidator {
private static final Logger LOGGER = LoggerFactory.getLogger(ClusterConfigTypeValidator.class);
@Override
public void validate(ClusterTopology topology) throws InvalidTopologyException {
// config types in from the request / configuration is always set in the request instance
Set<String> topologyClusterConfigTypes = new HashSet(topology.getConfiguration().getAllConfigTypes());
LOGGER.debug("Cluster config types: {}", topologyClusterConfigTypes);
if (topologyClusterConfigTypes.isEmpty()) {
LOGGER.debug("No config types to be checked.");
return;
}
// collecting all config types for services in the blueprint (from the related stack)
Set<String> stackServiceConfigTypes = new HashSet<>();
for (String serviceName : topology.getBlueprint().getServices()) {
stackServiceConfigTypes.addAll(topology.getBlueprint().getStack().getConfigurationTypes(serviceName));
}
// identifying invalid config types
Set<String> configTypeIntersection = new HashSet<>(topologyClusterConfigTypes);
if (configTypeIntersection.retainAll(stackServiceConfigTypes)) {
// there are config types not present in the stack for the services listed in the blueprint
// get the wrong config types
Set<String> invalidConfigTypes = new HashSet<>(topologyClusterConfigTypes);
invalidConfigTypes.removeAll(configTypeIntersection);
LOGGER.error("The following config typess are wrong: {}", invalidConfigTypes);
throw new InvalidTopologyException("The following configuration types are invalid: " + invalidConfigTypes.toString());
}
}
}