| /* |
| * Copyright 2014 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.onlab.util; |
| |
| import java.util.Arrays; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.MoreObjects.ToStringHelper; |
| |
| /** |
| * Helper to print byte[] length and hashCode. |
| */ |
| public final class ByteArraySizeHashPrinter { |
| |
| private final byte[] bytes; |
| |
| /** |
| * Returns ByteArraySizeHashPrinter wrapping given byte[]. |
| * |
| * @param bytes bytes to wrap around |
| * @return ByteArraySizeHashPrinter |
| */ |
| public static ByteArraySizeHashPrinter of(byte[] bytes) { |
| return new ByteArraySizeHashPrinter(bytes); |
| } |
| |
| /** |
| * Returns ByteArraySizeHashPrinter wrapping given byte[]. |
| * |
| * @param bytes bytes to wrap around |
| * @return null if {@code bytes == null}, ByteArraySizeHashPrinter otherwise |
| */ |
| public static ByteArraySizeHashPrinter orNull(byte[] bytes) { |
| if (bytes == null) { |
| return null; |
| } |
| return new ByteArraySizeHashPrinter(bytes); |
| } |
| |
| public ByteArraySizeHashPrinter(byte[] bytes) { |
| this.bytes = bytes; |
| } |
| |
| @Override |
| public String toString() { |
| ToStringHelper helper = MoreObjects.toStringHelper("byte[]"); |
| if (bytes != null) { |
| helper.add("length", bytes.length) |
| .add("hash", Arrays.hashCode(bytes)); |
| } else { |
| helper.addValue(bytes); |
| } |
| return helper.toString(); |
| } |
| } |