modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/CacheIteratorScanQueryTest.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
 * limitations under the License.
 */

package org.apache.ignite.internal.processors.cache;

import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.cache.query.QueryCursor;
import org.apache.ignite.cache.query.ScanQuery;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.lang.IgnitePredicate;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;

import javax.cache.Cache;
import java.util.Collections;
import java.util.List;
import org.junit.Test;

import static org.apache.ignite.cache.CacheMode.PARTITIONED;
import static org.apache.ignite.cache.CacheMode.REPLICATED;

/**
 * Node filter test.
 */
public class CacheIteratorScanQueryTest extends GridCommonAbstractTest {
    /** Cache configurations. */
    private CacheConfiguration[] ccfgs = null;

    /** */
    public CacheIteratorScanQueryTest() {
        super(false);
    }

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

    /** {@inheritDoc} */
    @Override protected IgniteConfiguration getConfiguration(String name) throws Exception {
        IgniteConfiguration cfg = super.getConfiguration(name);

        cfg.setCacheConfiguration(ccfgs);

        return cfg;
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testScanQuery() throws Exception {
        Ignite server = startGrid(0);

        ccfgs = new CacheConfiguration[] {
            new CacheConfiguration("test-cache-replicated").setCacheMode(REPLICATED)
                .setNodeFilter(new AlwaysFalseCacheFilter()),
            new CacheConfiguration("test-cache-partitioned").setCacheMode(PARTITIONED)
                .setNodeFilter(new AlwaysFalseCacheFilter())
        };

        Ignite client = startClientGrid(1);

        assertEquals(2, server.cluster().nodes().size());
        assertEquals(1, server.cluster().forServers().nodes().size());
        assertEquals(1, server.cluster().forClients().nodes().size());

        assertEquals(2, client.cluster().nodes().size());
        assertEquals(1, client.cluster().forServers().nodes().size());
        assertEquals(1, client.cluster().forClients().nodes().size());

        for (CacheConfiguration cfg : ccfgs) {
            IgniteCache<Object, Object> cache = client.cache(cfg.getName());

            assertNotNull(cache);
            assertNotNull(cache.iterator());
            assertFalse(cache.iterator().hasNext());
        }
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testQueryGetAllClientSide() throws Exception {
        Ignite server = startGrid(0);

        IgniteCache<Integer, Integer> cache = server.getOrCreateCache(DEFAULT_CACHE_NAME);

        Ignite client = startClientGrid(1);

        IgniteCache<Integer, Integer> cliCache = client.cache(DEFAULT_CACHE_NAME);

        for (int i = 0; i < 100_000; i++)
            cache.put(i, i);

        ScanQuery<Integer, Integer> qry = new ScanQuery<>();

        qry.setPageSize(100);

        try (QueryCursor<Cache.Entry<Integer, Integer>> cur = cliCache.query(qry)) {
            List<Cache.Entry<Integer, Integer>> res = cur.getAll();

            assertEquals(100_000, res.size());

            Collections.sort(res, (e1, e2) -> {
                    return e1.getKey().compareTo(e2.getKey());
            });

            int exp = 0;

            for (Cache.Entry<Integer, Integer> e : res) {
                assertEquals(exp, e.getKey().intValue());
                assertEquals(exp, e.getValue().intValue());

                exp++;
            }
        }
    }

    /**
     * Return always false.
     */
    public static class AlwaysFalseCacheFilter implements IgnitePredicate<ClusterNode> {
        /** {@inheritDoc} */
        @Override public boolean apply(ClusterNode node) {
            return false;
        }
    }
}