MiscUtils.java

/**
 * Copyright © 2016-2017 The Thingsboard Authors
 *
 * 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.thingsboard.server.utils;

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

import java.nio.charset.Charset;


/**
 * @author Andrew Shvayka
 */
public class MiscUtils {

    public static final Charset UTF8 = Charset.forName("UTF-8");

    public static String missingProperty(String propertyName) {
        return "The " + propertyName + " property need to be set!";
    }

    public static HashFunction forName(String name) {
        switch (name) {
            case "murmur3_32":
                return Hashing.murmur3_32();
            case "murmur3_128":
                return Hashing.murmur3_128();
            case "crc32":
                return Hashing.crc32();
            case "md5":
                return Hashing.md5();
            default:
                throw new IllegalArgumentException("Can't find hash function with name " + name);
        }
    }
}