com.mirantis.cachemod.filter.HashedKeyProvider.java Source code

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Here is the source code for com.mirantis.cachemod.filter.HashedKeyProvider.java

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/*
 * Copyright 2011 Mirantis Inc. 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.
 */

package com.mirantis.cachemod.filter;

import java.security.NoSuchAlgorithmException;

import org.apache.commons.codec.binary.Base64;

public class HashedKeyProvider extends AbstractKeyProvider {

    @Override
    protected String shortQueryString(String queryString) {
        return Base64.encodeBase64String(digest(queryString)).replace('/', '_');
    }

    private byte[] digest(String str) {
        try {
            java.security.MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
            return digest.digest(str.getBytes());
        } catch (NoSuchAlgorithmException e) {
            // ignore exception
            return str.getBytes();
        }

    }

}