/*
 * 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
 *
 *   https://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.accumulo.manager.tableOps.namespace.create;

import static java.util.Objects.requireNonNull;

import java.util.HashMap;
import java.util.Map;

import org.apache.accumulo.core.data.NamespaceId;
import org.apache.accumulo.core.fate.Repo;
import org.apache.accumulo.manager.Manager;
import org.apache.accumulo.manager.tableOps.ManagerRepo;
import org.apache.accumulo.manager.tableOps.Utils;

public class CreateNamespace extends ManagerRepo {
  private static final long serialVersionUID = 1L;

  private final NamespaceInfo namespaceInfo;

  public CreateNamespace(String user, String namespaceName, Map<String,String> props) {
    namespaceInfo = new NamespaceInfo();
    namespaceInfo.namespaceName = namespaceName;
    namespaceInfo.user = user;
    namespaceInfo.props = new HashMap<>(requireNonNull(props));
  }

  @Override
  public long isReady(long tid, Manager environment) {
    return 0;
  }

  @Override
  public Repo<Manager> call(long tid, Manager manager) throws Exception {
    Utils.getIdLock().lock();
    try {
      namespaceInfo.namespaceId =
          Utils.getNextId(namespaceInfo.namespaceName, manager.getContext(), NamespaceId::of);
      return new SetupNamespacePermissions(namespaceInfo);
    } finally {
      Utils.getIdLock().unlock();
    }

  }

  @Override
  public void undo(long tid, Manager env) {
    // nothing to do, the namespace id was allocated!
  }

}
