/*
 * 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.p2p;

import java.util.UUID;
import org.apache.ignite.Ignite;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.events.Event;
import org.apache.ignite.events.EventType;
import org.apache.ignite.lang.IgniteBiPredicate;
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;
import static org.apache.ignite.cache.CacheRebalanceMode.SYNC;
import static org.apache.ignite.cache.CacheWriteSynchronizationMode.FULL_SYNC;
import static org.apache.ignite.configuration.DeploymentMode.CONTINUOUS;

/**
 * Tests for continuous deployment with cache and changing topology.
 */
public class GridP2PContinuousDeploymentSelfTest extends GridCommonAbstractTest {
    /** Number of grids cache. */
    private static final int GRID_CNT = 2;

    /** Name for Ignite instance without cache. */
    private static final String IGNITE_INSTANCE_NAME = "grid-no-cache";

    /** First test task name. */
    private static final String TEST_TASK_1 = "org.apache.ignite.tests.p2p.GridP2PContinuousDeploymentTask1";

    /** Second test task name. */
    private static final String TEST_TASK_2 = "org.apache.ignite.tests.p2p.GridP2PContinuousDeploymentTask2";

    /** Test predicate. */
    private static final String TEST_PREDICATE = "org.apache.ignite.tests.p2p.GridEventConsumeFilter";

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

        cfg.setDeploymentMode(CONTINUOUS);

        if (IGNITE_INSTANCE_NAME.equals(igniteInstanceName))
            cfg.setCacheConfiguration();
        else
            cfg.setCacheConfiguration(cacheConfiguration());

        cfg.setPeerClassLoadingEnabled(true);

        return cfg;
    }

    /**
     * @return Cache configuration.
     * @throws Exception In case of error.
     */
    protected CacheConfiguration cacheConfiguration() throws Exception {
        CacheConfiguration cfg = defaultCacheConfiguration();

        cfg.setCacheMode(PARTITIONED);
        cfg.setBackups(1);
        cfg.setWriteSynchronizationMode(FULL_SYNC);
        cfg.setRebalanceMode(SYNC);

        return cfg;
    }

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

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

    /**
     * @throws Exception If failed.
     */
    @SuppressWarnings("unchecked")
    @Test
    public void testDeployment() throws Exception {
        startGridsMultiThreaded(GRID_CNT);

        Ignite ignite = startGrid(IGNITE_INSTANCE_NAME);

        Class cls = getExternalClassLoader().loadClass(TEST_TASK_1);

        compute(ignite.cluster().forRemotes()).execute(cls, null);

        stopGrid(IGNITE_INSTANCE_NAME);

        ignite = startGrid(IGNITE_INSTANCE_NAME);

        cls = getExternalClassLoader().loadClass(TEST_TASK_2);

        compute(ignite.cluster().forRemotes()).execute(cls, null);

        stopGrid(IGNITE_INSTANCE_NAME);
    }

    /**
     * Tests that server node joins correctly to existing cluster if it has deployed user class with enabled P2P.
     *
     * @throws Exception If failed.
     */
    @Test
    public void testServerJoinWithP2PClassDeployedInCluster() throws Exception {
        startGrids(GRID_CNT);

        ClassLoader extLdr = getExternalClassLoader();

        Ignite client = startClientGrid(2);

        Class<?> cls = extLdr.loadClass(TEST_PREDICATE);

        client.events().remoteListen(
            new IgniteBiPredicate<UUID, Event>() {
                @Override public boolean apply(UUID uuid, Event event) {
                    return true;
                }
            },
            (IgnitePredicate<Event>)cls.newInstance(),
            EventType.EVT_CACHE_OBJECT_PUT
        );

        Ignite srv = startGrid(3);

        srv.events().remoteListen(
            new IgniteBiPredicate<UUID, Event>() {
                @Override public boolean apply(UUID uuid, Event event) {
                    return true;
                }
            },
            (IgnitePredicate<Event>)cls.newInstance(),
            EventType.EVT_CACHE_OBJECT_PUT
        );

        awaitPartitionMapExchange();
    }
}