sentry-core/sentry-core-model-kafka/src/main/java/org/apache/sentry/core/model/kafka/KafkaModelAuthorizables.java

/*
 * 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.sentry.core.model.kafka;

import org.apache.sentry.core.common.utils.KeyValue;
import org.apache.sentry.core.model.kafka.KafkaAuthorizable.AuthorizableType;
import org.apache.shiro.config.ConfigurationException;

public class KafkaModelAuthorizables {
  public static KafkaAuthorizable from(KeyValue keyValue) throws ConfigurationException {
    String prefix = keyValue.getKey().toLowerCase();
    String name = keyValue.getValue();
    for (AuthorizableType type : AuthorizableType.values()) {
      if (prefix.equalsIgnoreCase(type.name())) {
        return from(type, name);
      }
    }
    return null;
  }

  public static KafkaAuthorizable from(String keyValue) throws ConfigurationException {
    return from(new KeyValue(keyValue));
  }

  public static KafkaAuthorizable from(AuthorizableType type, String name) throws ConfigurationException {
    switch (type) {
      case HOST:
        return new Host(name);
      case CLUSTER: {
        if (!name.equals(Cluster.NAME)) {
          throw new ConfigurationException("Kafka's cluster resource can only have name " + Cluster.NAME);
        }
        return new Cluster();
      }
      case TOPIC:
        return new Topic(name);
      case CONSUMERGROUP:
        return new ConsumerGroup(name);
      case TRANSACTIONALID:
        return new TransactionalId(name);
      default:
        return null;
    }
  }
}