cassandra-trunk/test/unit/org/apache/cassandra/hints/HintsEncryptionTest.java
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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 */
package org.apache.cassandra.hints;

import java.util.Arrays;

import javax.crypto.Cipher;

import com.google.common.collect.ImmutableMap;
import org.junit.Before;
import org.junit.Test;

import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.security.EncryptionContext;
import org.apache.cassandra.security.EncryptionContextGenerator;

public class HintsEncryptionTest extends AlteredHints
{
    EncryptionContext encryptionContext;
    Cipher cipher;

    @Before
    public void setup()
    {
        encryptionContext = EncryptionContextGenerator.createContext(true);
        DatabaseDescriptor.setEncryptionContext(encryptionContext);
    }

    @Test
    public void encryptedHints() throws Exception
    {
        multiFlushAndDeserializeTest();
    }

    boolean looksLegit(HintsWriter writer)
    {
        if (!(writer instanceof EncryptedHintsWriter))
            return false;

        EncryptedHintsWriter encryptedHintsWriter = (EncryptedHintsWriter)writer;
        cipher = encryptedHintsWriter.getCipher();

        return encryptedHintsWriter.getCompressor().getClass().isAssignableFrom(encryptionContext.getCompressor().getClass());
    }

    boolean looksLegit(ChecksummedDataInput checksummedDataInput)
    {
        if (!(checksummedDataInput instanceof EncryptedChecksummedDataInput))
            return false;

        EncryptedChecksummedDataInput encryptedDataInput = (EncryptedChecksummedDataInput)checksummedDataInput;

        return Arrays.equals(cipher.getIV(), encryptedDataInput.getCipher().getIV()) &&
               encryptedDataInput.getCompressor().getClass().isAssignableFrom(encryptionContext.getCompressor().getClass());
    }

    ImmutableMap<String, Object> params()
    {
        ImmutableMap<String, Object> compressionParams = ImmutableMap.<String, Object>builder()
                                                         .putAll(encryptionContext.toHeaderParameters())
                                                         .build();
        return ImmutableMap.<String, Object>builder()
               .put(HintsDescriptor.ENCRYPTION, compressionParams)
               .build();
    }
}
