/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.controller.internal;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.controller.AmbariManagementController;
import org.apache.ambari.server.controller.RootServiceRequest;
import org.apache.ambari.server.controller.RootServiceResponse;
import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
import org.apache.ambari.server.controller.spi.NoSuchResourceException;
import org.apache.ambari.server.controller.spi.Predicate;
import org.apache.ambari.server.controller.spi.Request;
import org.apache.ambari.server.controller.spi.Resource;
import org.apache.ambari.server.controller.spi.SystemException;
import org.apache.ambari.server.controller.spi.UnsupportedPropertyException;
import org.apache.ambari.server.controller.spi.Resource.Type;
import org.apache.ambari.server.controller.utilities.PropertyHelper;
public class RootServiceResourceProvider extends ReadOnlyResourceProvider {
public static final String SERVICE_NAME_PROPERTY_ID = PropertyHelper
.getPropertyId("RootService", "service_name");
private Set<String> pkPropertyIds = new HashSet<String>(
Arrays.asList(new String[] { SERVICE_NAME_PROPERTY_ID }));
protected RootServiceResourceProvider(Set<String> propertyIds,
Map<Type, String> keyPropertyIds,
AmbariManagementController managementController) {
super(propertyIds, keyPropertyIds, managementController);
}
@Override
public Set<Resource> getResources(Request request, Predicate predicate)
throws SystemException, UnsupportedPropertyException,
NoSuchResourceException, NoSuchParentResourceException {
final Set<RootServiceRequest> requests = new HashSet<RootServiceRequest>();
if (predicate == null) {
requests.add(getRequest(Collections.<String, Object>emptyMap()));
} else {
for (Map<String, Object> propertyMap : getPropertyMaps(predicate)) {
requests.add(getRequest(propertyMap));
}
}
Set<String> requestedIds = getRequestPropertyIds(request, predicate);
Set<RootServiceResponse> responses = getResources(new Command<Set<RootServiceResponse>>() {
@Override
public Set<RootServiceResponse> invoke() throws AmbariException {
return getManagementController().getRootServices(requests);
}
});
Set<Resource> resources = new HashSet<Resource>();
for (RootServiceResponse response : responses) {
Resource resource = new ResourceImpl(Resource.Type.RootService);
setResourceProperty(resource, SERVICE_NAME_PROPERTY_ID,
response.getServiceName(), requestedIds);
resources.add(resource);
}
return resources;
}
private RootServiceRequest getRequest(Map<String, Object> properties) {
return new RootServiceRequest((String) properties.get(SERVICE_NAME_PROPERTY_ID));
}
@Override
protected Set<String> getPKPropertyIds() {
return pkPropertyIds ;
}
}