/*
* 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.kafka.clients.admin;
import java.util.Objects;
/**
* A filter which matches Resource objects.
*/
public class ResourceFilter {
private final ResourceType resourceType;
private final String name;
public static final ResourceFilter ANY = new ResourceFilter(ResourceType.ANY, null);
public ResourceFilter(ResourceType resourceType, String name) {
Objects.requireNonNull(resourceType);
this.resourceType = resourceType;
this.name = name;
}
public ResourceType resourceType() {
return resourceType;
}
public String name() {
return name;
}
@Override
public String toString() {
return "(resourceType=" + resourceType + ", name=" + ((name == null) ? "<any>" : name) + ")";
}
/**
* Return true if this ResourceFilter has any UNKNOWN components.
*/
public boolean unknown() {
return resourceType.unknown();
}
@Override
public boolean equals(Object o) {
if (!(o instanceof ResourceFilter))
return false;
ResourceFilter other = (ResourceFilter) o;
return resourceType.equals(other.resourceType) && Objects.equals(name, other.name);
}
@Override
public int hashCode() {
return Objects.hash(resourceType, name);
}
public boolean matches(Resource other) {
if ((name != null) && (!name.equals(other.name())))
return false;
if ((resourceType != ResourceType.ANY) && (!resourceType.equals(other.resourceType())))
return false;
return true;
}
public boolean matchesAtMostOne() {
return findIndefiniteField() == null;
}
public String findIndefiniteField() {
if (resourceType == ResourceType.ANY)
return "Resource type is ANY.";
if (resourceType == ResourceType.UNKNOWN)
return "Resource type is UNKNOWN.";
if (name == null)
return "Resource name is NULL.";
return null;
}
}