/*
 * 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;

import java.util.Arrays;
import java.util.Collection;
import java.util.Map;
import java.util.UUID;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCheckedException;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.internal.util.typedef.F;
import org.apache.ignite.internal.util.typedef.internal.CU;
import org.apache.ignite.lang.IgnitePredicate;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.junit.Test;

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

/**
 * Tests affinity mapping.
 */
public class GridAffinitySelfTest extends GridCommonAbstractTest {
    /** {@inheritDoc} */
    @Override protected IgniteConfiguration getConfiguration(String igniteInstanceName) throws Exception {
        IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);

        if (!igniteInstanceName.endsWith("1")) {
            assert igniteInstanceName.endsWith("2");

            CacheConfiguration cacheCfg = defaultCacheConfiguration();

            cacheCfg.setCacheMode(PARTITIONED);
            cacheCfg.setBackups(1);

            cfg.setCacheConfiguration(cacheCfg);
        }

        return cfg;
    }

    /** {@inheritDoc} */
    @Override protected void beforeTest() throws Exception {
        startGrid(2);

        startClientGrid(1);
    }

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

    /**
     * @throws IgniteCheckedException If failed.
     */
    @Test
    public void testAffinity() throws Exception {
        Ignite g1 = grid(1);
        Ignite g2 = grid(2);

        assert caches(g1).isEmpty();
        assert F.first(caches(g2)).getCacheMode() == PARTITIONED;

        awaitPartitionMapExchange();

        Map<ClusterNode, Collection<String>> map = g1.<String>affinity(DEFAULT_CACHE_NAME).mapKeysToNodes(F.asList("1"));

        assertNotNull(map);
        assertEquals("Invalid map size: " + map.size(), 1, map.size());
        assertEquals(F.first(map.keySet()), g2.cluster().localNode());

        UUID id1 = g1.affinity(DEFAULT_CACHE_NAME).mapKeyToNode("2").id();

        assertNotNull(id1);
        assertEquals(g2.cluster().localNode().id(), id1);

        UUID id2 = g1.affinity(DEFAULT_CACHE_NAME).mapKeyToNode("3").id();

        assertNotNull(id2);
        assertEquals(g2.cluster().localNode().id(), id2);
    }

    /**
     * @param g Grid.
     * @return Non-system caches.
     */
    private Collection<CacheConfiguration> caches(Ignite g) {
        return F.view(Arrays.asList(g.configuration().getCacheConfiguration()), new IgnitePredicate<CacheConfiguration>() {
            @Override public boolean apply(CacheConfiguration c) {
                return !CU.UTILITY_CACHE_NAME.equals(c.getName());
            }
        });
    }
}