/*
 * 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
 * limitations under the License.
 */

package org.apache.ignite.internal.encryption;

import java.util.Arrays;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.internal.IgniteEx;
import org.apache.ignite.internal.IgniteInterruptedCheckedException;
import org.apache.ignite.internal.managers.encryption.GroupKey;
import org.apache.ignite.internal.util.typedef.T2;
import org.apache.ignite.internal.util.typedef.internal.CU;
import org.apache.ignite.spi.encryption.keystore.KeystoreEncryptionKey;
import org.apache.ignite.testframework.GridTestUtils;
import org.jetbrains.annotations.Nullable;
import org.junit.Test;

import static org.apache.ignite.cache.CacheWriteSynchronizationMode.FULL_SYNC;

/**
 * Tests to check encryption of entry bigger then page size.
 */
public class EncryptedCacheBigEntryTest extends AbstractEncryptionTest {
    /** {@inheritDoc} */
    @Override protected void afterTestsStopped() throws Exception {
        cleanPersistenceDir();
    }

    /** {@inheritDoc} */
    @Override protected void afterTest() throws Exception {
        stopAllGrids(false);

        cleanPersistenceDir();
    }

    /** @throws Exception If failed. */
    @Test
    public void testCreateEncryptedCacheWithBigEntry() throws Exception {
        T2<IgniteEx, IgniteEx> grids = startTestGrids(true);

        createEncryptedCache(grids.get1(), grids.get2(), cacheName(), null);

        checkEncryptedCaches(grids.get1(), grids.get2());

        int grpId = CU.cacheGroupId(cacheName(), null);

        KeystoreEncryptionKey keyBeforeRestart =
            (KeystoreEncryptionKey)grids.get1().context().encryption().getActiveKey(grpId).key();

        stopAllGrids();

        grids = startTestGrids(false);

        checkEncryptedCaches(grids.get1(), grids.get2());

        GroupKey grpKeyAfterRestart = grids.get1().context().encryption().getActiveKey(grpId);

        assertNotNull(grpKeyAfterRestart);

        KeystoreEncryptionKey keyAfterRestart = (KeystoreEncryptionKey)grpKeyAfterRestart.key();

        assertNotNull(keyAfterRestart);
        assertNotNull(keyAfterRestart.key());

        assertEquals(keyBeforeRestart.key(), keyAfterRestart.key());
    }

    /** {@inheritDoc} */
    @Override protected void createEncryptedCache(IgniteEx grid0, @Nullable IgniteEx grid1, String cacheName,
        String cacheGroup, boolean putData) throws IgniteInterruptedCheckedException {
        CacheConfiguration<Integer, byte[]> ccfg = new CacheConfiguration<Integer, byte[]>(cacheName)
            .setWriteSynchronizationMode(FULL_SYNC)
            .setGroupName(cacheGroup)
            .setEncryptionEnabled(true);

        IgniteCache<Integer, byte[]> cache = grid0.createCache(ccfg);

        if (grid1 != null)
            GridTestUtils.waitForCondition(() -> grid1.cachex(cacheName()) != null, 2_000L);

        if (putData) {
            cache.put(1, bigArray(grid0));

            assertTrue(Arrays.equals(bigArray(grid0), cache.get(1)));
        }
    }

    /** {@inheritDoc} */
    @Override protected void checkData(IgniteEx grid0) {
        IgniteCache<Integer, byte[]> cache = grid0.cache(cacheName());

        assertTrue(Arrays.equals(bigArray(grid0), cache.get(1)));
    }

    /** */
    private byte[] bigArray(IgniteEx grid) {
        int arrSz = grid.configuration().getDataStorageConfiguration().getPageSize() * 3;

        byte[] bigArr = new byte[arrSz];

        for (int i = 0; i < bigArr.length; i++)
            bigArr[i] = (byte)i;

        return bigArr;
    }
}