/*
* 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.ignite.internal.util.nio;
import java.util.concurrent.atomic.AtomicInteger;
/**
* Meta keys for {@link GridNioSession}.
*/
public enum GridNioSessionMetaKey {
/** NIO parser state. */
PARSER_STATE,
/** SSL Meta. */
SSL_META,
/** NIO operation (request type). */
NIO_OPERATION,
/** Last future. */
LAST_FUT,
/** Client marshaller. */
MARSHALLER,
/** Client marshaller ID. */
MARSHALLER_ID,
/** Message writer. */
MSG_WRITER;
/** Maximum count of NIO session keys in system. */
public static final int MAX_KEYS_CNT = 64;
/** NIO session key generator. */
private static final AtomicInteger keyGen = new AtomicInteger(GridNioSessionMetaKey.values().length);
/**
* Returns next NIO session key ordinal for non-existing enum value.
* <p>
* NOTE: Maximum count of NIO session keys in system is limited by {@link #MAX_KEYS_CNT}.
*
* @return NIO session key ordinal for non-existing enum value.
*/
public static int nextUniqueKey() {
int res = keyGen.getAndIncrement();
if (res >= MAX_KEYS_CNT)
throw new IllegalStateException("Maximum count of NIO session keys in system is limited by: " +
MAX_KEYS_CNT);
return res;
}
}