org.apache.bookkeeper.statelib.impl.Constants Maven / Gradle / Ivy
/*
* 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.bookkeeper.statelib.impl;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
/**
* Default a few constants used across implementation.
*/
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class Constants {
public static final String LEDGER_METADATA_APPLICATION_STREAM_STORAGE = "bk-stream-storage-service";
public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
public static final byte[] NULL_START_KEY = EMPTY_BYTE_ARRAY;
public static final byte[] NULL_END_KEY = new byte[] { 0 };
public static final long INVALID_REVISION = -1L;
public static boolean isNullStartKey(byte[] key) {
return null != key && key.length == 0;
}
public static boolean isNullEndKey(byte[] key) {
return null != key && key.length == 1 && key[0] == 0;
}
}