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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed 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.onosproject.net.group;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.Arrays;
/**
* Default implementation of group key interface.
*/
public class DefaultGroupKey implements GroupKey {
private final byte[] key;
protected static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
public DefaultGroupKey(byte[] key) {
this.key = checkNotNull(key);
}
@Override
public byte[] key() {
return key;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof DefaultGroupKey)) {
return false;
}
DefaultGroupKey that = (DefaultGroupKey) o;
return (Arrays.equals(this.key, that.key));
}
@Override
public int hashCode() {
return Arrays.hashCode(this.key);
}
/**
* Returns a hex string representation of the byte array that is used
* as a group key. This solution was adapted from
* http://stackoverflow.com/questions/9655181/
*/
@Override
public String toString() {
char[] hexChars = new char[key.length * 2];
for (int j = 0; j < key.length; j++) {
int v = key[j] & 0xFF;
hexChars[j * 2] = HEX_ARRAY[v >>> 4];
hexChars[j * 2 + 1] = HEX_ARRAY[v & 0x0F];
}
return "GroupKey:0x" + new String(hexChars);
}
}
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