com.lithium.flow.util.HashFunctions.java Source code

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Here is the source code for com.lithium.flow.util.HashFunctions.java

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/*
 * Copyright 2015 Lithium Technologies, Inc.
 *
 * 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 com.lithium.flow.util;

import static com.google.common.base.Preconditions.checkNotNull;

import javax.annotation.Nonnull;

import com.google.common.hash.HashFunction;
import com.google.common.hash.Hashing;

/**
 * @author Matt Ayres
 */
public class HashFunctions {
    @Nonnull
    public static HashFunction of(@Nonnull String name) {
        checkNotNull(name);
        switch (name) {
        case "adler32":
            return Hashing.adler32();
        case "crc32":
            return Hashing.crc32();
        case "md5":
            return Hashing.md5();
        case "sha1":
            return Hashing.sha1();
        case "sha256":
            return Hashing.sha256();
        case "sha512":
            return Hashing.sha512();
        case "sipHash24":
            return Hashing.sipHash24();
        case "murmur3_32":
            return Hashing.murmur3_32();
        case "murmur3_128":
            return Hashing.murmur3_128();
        default:
            throw new RuntimeException("unknown hash: " + name);
        }
    }
}