/**
* 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.api.resources;
import org.apache.ambari.server.api.query.render.DefaultRenderer;
import org.apache.ambari.server.api.query.render.MinimalRenderer;
import org.apache.ambari.server.api.query.render.Renderer;
import org.apache.ambari.server.api.services.Request;
import org.apache.ambari.server.api.util.TreeNode;
import org.apache.ambari.server.controller.spi.ClusterController;
import org.apache.ambari.server.controller.spi.Resource;
import org.apache.ambari.server.controller.spi.Schema;
import org.apache.ambari.server.controller.utilities.ClusterControllerHelper;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
/**
* Base resource definition. Contains behavior common to all resource types.
*/
public abstract class BaseResourceDefinition implements ResourceDefinition {
/**
* Resource type. One of {@link Resource.Type}
*/
private Resource.Type m_type;
/**
* Constructor.
*
* @param resourceType resource type
*/
public BaseResourceDefinition(Resource.Type resourceType) {
m_type = resourceType;
}
@Override
public Resource.Type getType() {
return m_type;
}
@Override
public Set<SubResourceDefinition> getSubResourceDefinitions() {
return Collections.emptySet();
}
@Override
public List<PostProcessor> getPostProcessors() {
List<PostProcessor> listProcessors = new ArrayList<PostProcessor>();
listProcessors.add(new BaseHrefPostProcessor());
return listProcessors;
}
@Override
public Renderer getRenderer(String name) {
if (name == null || name.equals("default")) {
return new DefaultRenderer();
} else if (name.equals("minimal")) {
return new MinimalRenderer();
} else {
throw new IllegalArgumentException("Invalid renderer name: " + name +
" for resource of type: " + m_type);
}
}
ClusterController getClusterController() {
return ClusterControllerHelper.getClusterController();
}
@Override
public boolean equals(Object o) {
boolean result =false;
if(this == o) result = true;
if(o instanceof BaseResourceDefinition){
BaseResourceDefinition other = (BaseResourceDefinition) o;
if(m_type == other.m_type )
result = true;
}
return result;
}
@Override
public int hashCode() {
return m_type.hashCode();
}
class BaseHrefPostProcessor implements PostProcessor {
@Override
public void process(Request request, TreeNode<Resource> resultNode, String href) {
Resource r = resultNode.getObject();
TreeNode<Resource> parent = resultNode.getParent();
if (parent.getName() != null) {
int i = href.indexOf("?");
if (i != -1) {
href = href.substring(0, i);
}
if (!href.endsWith("/")) {
href = href + '/';
}
Schema schema = getClusterController().getSchema(r.getType());
Object id = r.getPropertyValue(schema.getKeyPropertyId(r.getType()));
href = parent.getProperty("isCollection").equals("true") ?
href + id : href + parent.getName() + '/' + id;
}
resultNode.setProperty("href", href);
}
}
}