/**
* 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.zookeeper_voltpatches;
import org.apache.log4j.Logger;
import org.apache.zookeeper_voltpatches.CreateMode;
import org.apache.zookeeper_voltpatches.KeeperException;
/***
* CreateMode value determines how the znode is created on ZooKeeper.
*/
public enum CreateMode {
/**
* The znode will not be automatically deleted upon client's disconnect.
*/
PERSISTENT(0, false, false),
/**
* The znode will not be automatically deleted upon client's disconnect, and
* its name will be appended with a monotonically increasing number.
*/
PERSISTENT_SEQUENTIAL(2, false, true),
/**
* The znode will be deleted upon the client's disconnect.
*/
EPHEMERAL(1, true, false),
/**
* The znode will be deleted upon the client's disconnect, and its name will
* be appended with a monotonically increasing number.
*/
EPHEMERAL_SEQUENTIAL(3, true, true);
private static final Logger LOG = Logger.getLogger(CreateMode.class);
private boolean ephemeral;
private boolean sequential;
private int flag;
CreateMode(int flag, boolean ephemeral, boolean sequential) {
this.flag = flag;
this.ephemeral = ephemeral;
this.sequential = sequential;
}
public boolean isEphemeral() {
return ephemeral;
}
public boolean isSequential() {
return sequential;
}
public int toFlag() {
return flag;
}
/**
* Map an integer value to a CreateMode value
*/
static public CreateMode fromFlag(int flag) throws KeeperException {
switch (flag) {
case 0:
return CreateMode.PERSISTENT;
case 1:
return CreateMode.EPHEMERAL;
case 2:
return CreateMode.PERSISTENT_SEQUENTIAL;
case 3:
return CreateMode.EPHEMERAL_SEQUENTIAL;
default:
LOG.error("Received an invalid flag value to convert to a CreateMode");
throw new KeeperException.BadArgumentsException();
}
}
}