/**
 * 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.pulsar.zookeeper;

import java.util.concurrent.CompletableFuture;

import org.apache.zookeeper.ZooKeeper;

public interface ZooKeeperClientFactory {
    enum SessionType {
        /**
         * Create a normal ZK session that requires a valid quorum
         */
        ReadWrite,

        /**
         * Create a ZK session that allow the client to stay connected (in read only mode) to a ZK server that has lost
         * the quorum
         */
        AllowReadOnly,
    }

    /**
     * Return a future yielding a connected ZooKeeper client
     *
     * @param conf
     * @return
     */
    CompletableFuture<ZooKeeper> create(String serverList, SessionType sessionType, int zkSessionTimeoutMillis);
}
