com.linkedin.databus2.schemas.utils.Utils.java Source code

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Here is the source code for com.linkedin.databus2.schemas.utils.Utils.java

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package com.linkedin.databus2.schemas.utils;
/*
 *
 * Copyright 2013 LinkedIn Corp. All rights reserved
 *
 * 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.
 *
*/

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.codec.binary.Hex;

/**
 * "Borrowed" largely from com.linkedin.avro.utils.Utils
 */
public class Utils {
    public static final Hex HEX = new Hex();

    public static byte[] md5(byte[] bytes) {
        try {
            MessageDigest digest = MessageDigest.getInstance("md5");
            return digest.digest(bytes);
        } catch (NoSuchAlgorithmException e) {
            throw new IllegalStateException("This can't happen.", e);
        }
    }

    public static byte[] utf8(String s) {
        try {
            return s.getBytes("UTF-8");
        } catch (UnsupportedEncodingException e) {
            throw new IllegalStateException("This can't happen");
        }
    }

    public static <T> T notNull(T t) {
        if (t == null)
            throw new IllegalArgumentException("Null value not allowed.");
        else
            return t;
    }

    public static boolean equals(Object x, Object y) {
        if (x == y)
            return true;
        else if (x == null)
            return false;
        else if (y == null)
            return false;
        else
            return x.equals(y);
    }

    public static List<File> toFiles(List<String> strs) {
        List<File> files = new ArrayList<File>();
        for (String s : strs)
            files.add(new File(s));
        return files;
    }

    public static byte[] getBytes(String s, String enc) {
        try {
            return s.getBytes(enc);
        } catch (UnsupportedEncodingException exp) {
            throw new RuntimeException(exp);
        }
    }

}