com.kumbaya.dht.Keys.java Source code

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Here is the source code for com.kumbaya.dht.Keys.java

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/**
 * Copyright 2010, 2011 Google 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.kumbaya.dht;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.limewire.mojito.EntityKey;
import org.limewire.mojito.KUID;
import org.limewire.mojito.db.DHTValueType;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Keys {
    private static final Log logger = LogFactory.getLog(Keys.class);

    public static KUID of(String key) {
        try {
            MessageDigest md = MessageDigest.getInstance("SHA1");
            KUID result = KUID.createWithBytes(md.digest(key.getBytes("UTF-8")));
            md.reset();
            return result;
        } catch (UnsupportedEncodingException e) {
            logger.warn("failed to encode key: " + key, e);
            return null;
        } catch (NoSuchAlgorithmException e) {
            logger.warn("failed to encode key: " + key, e);
            return null;
        }
    }

    public static EntityKey as(KUID key) {
        return as(key, DHTValueType.TEXT);
    }

    public static EntityKey as(KUID key, DHTValueType type) {
        return EntityKey.createEntityKey(key, type);
    }
}