/*
 * 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.query.continuous;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import javax.cache.configuration.FactoryBuilder;
import javax.cache.event.CacheEntryEvent;
import javax.cache.event.CacheEntryListenerException;
import javax.cache.event.CacheEntryUpdatedListener;
import javax.cache.processor.EntryProcessorException;
import javax.cache.processor.MutableEntry;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.cache.CacheAtomicityMode;
import org.apache.ignite.cache.CacheEntryEventSerializableFilter;
import org.apache.ignite.cache.CacheEntryProcessor;
import org.apache.ignite.cache.CacheMode;
import org.apache.ignite.cache.CacheWriteSynchronizationMode;
import org.apache.ignite.cache.query.ContinuousQuery;
import org.apache.ignite.cache.query.QueryCursor;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.internal.IgniteInternalFuture;
import org.apache.ignite.internal.IgniteInterruptedCheckedException;
import org.apache.ignite.internal.util.tostring.GridToStringInclude;
import org.apache.ignite.internal.util.typedef.PA;
import org.apache.ignite.internal.util.typedef.internal.S;
import org.apache.ignite.internal.util.typedef.internal.U;
import org.apache.ignite.lang.IgniteAsyncCallback;
import org.apache.ignite.resources.IgniteInstanceResource;
import org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi;
import org.apache.ignite.spi.eventstorage.memory.MemoryEventStorageSpi;
import org.apache.ignite.testframework.GridTestUtils;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.apache.ignite.transactions.Transaction;
import org.junit.Test;

import static org.apache.ignite.cache.CacheAtomicityMode.ATOMIC;
import static org.apache.ignite.cache.CacheAtomicityMode.TRANSACTIONAL;
import static org.apache.ignite.cache.CacheMode.PARTITIONED;
import static org.apache.ignite.cache.CacheMode.REPLICATED;
import static org.apache.ignite.cache.CacheWriteSynchronizationMode.FULL_SYNC;
import static org.apache.ignite.cache.CacheWriteSynchronizationMode.PRIMARY_SYNC;
import static org.apache.ignite.transactions.TransactionConcurrency.PESSIMISTIC;
import static org.apache.ignite.transactions.TransactionIsolation.REPEATABLE_READ;

/**
 *
 */
public class CacheContinuousQueryOrderingEventTest extends GridCommonAbstractTest {
    /** */
    public static final int LISTENER_CNT = 3;

    /** */
    public static final int KEYS = 10;

    /** */
    private static final int NODES = 5;

    /** */
    public static final int ITERATION_CNT = 100;

    /** */
    private static volatile boolean fail;

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

        ((TcpCommunicationSpi)cfg.getCommunicationSpi()).setSharedMemoryPort(-1);

        MemoryEventStorageSpi storeSpi = new MemoryEventStorageSpi();
        storeSpi.setExpireCount(100);

        cfg.setEventStorageSpi(storeSpi);

        return cfg;
    }

    /** {@inheritDoc} */
    @Override protected void beforeTestsStarted() throws Exception {
        super.beforeTestsStarted();

        startGridsMultiThreaded(NODES - 1);

        startClientGrid(NODES - 1);
    }

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

        fail = false;
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testAtomicOnheapTwoBackup() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 2, ATOMIC, PRIMARY_SYNC);

        doOrderingTest(ccfg, false);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testTxOnheapTwoBackup() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 2, TRANSACTIONAL, FULL_SYNC);

        doOrderingTest(ccfg, false);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testTxOnheapWithoutBackup() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 0, TRANSACTIONAL, PRIMARY_SYNC);

        doOrderingTest(ccfg, false);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testTxOnheapWithoutBackupFullSync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 0, TRANSACTIONAL, FULL_SYNC);

        doOrderingTest(ccfg, false);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testAtomicOnheapWithoutBackup() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 0, ATOMIC, PRIMARY_SYNC);

        doOrderingTest(ccfg, false);
    }

    // ASYNC

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testAtomicOnheapTwoBackupAsync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 2, ATOMIC, PRIMARY_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testAtomicOnheapTwoBackupAsyncFullSync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 2, ATOMIC, FULL_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testAtomicReplicatedAsync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(REPLICATED, 0, ATOMIC, PRIMARY_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testAtomicReplicatedAsyncFullSync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(REPLICATED, 0, ATOMIC, FULL_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testAtomicOnheapWithoutBackupAsync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 0, ATOMIC, PRIMARY_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testTxOnheapTwoBackupAsync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 2, TRANSACTIONAL, PRIMARY_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testTxOnheapAsync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 0, TRANSACTIONAL, PRIMARY_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testTxOnheapAsyncFullSync() throws Exception {
        CacheConfiguration<Object, Object> ccfg = cacheConfiguration(PARTITIONED, 0, TRANSACTIONAL, FULL_SYNC);

        doOrderingTest(ccfg, true);
    }

    /**
     * @param ccfg Cache configuration.
     * @param async Async filter.
     * @throws Exception If failed.
     */
    protected void doOrderingTest(
        final CacheConfiguration ccfg,
        final boolean async)
        throws Exception {
        ignite(0).createCache(ccfg);

        awaitCacheOnClient(grid(NODES - 1), ccfg.getName());

        List<QueryCursor<?>> qries = new ArrayList<>();

        try {
            List<BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>>> rcvdEvts =
                new ArrayList<>(LISTENER_CNT * NODES);

            final AtomicInteger qryCntr = new AtomicInteger(0);

            final int threadCnt = 20;

            for (int idx = 0; idx < NODES; idx++) {
                for (int i = 0; i < LISTENER_CNT; i++) {
                    BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>> queue =
                        new ArrayBlockingQueue<>(ITERATION_CNT * threadCnt);

                    ContinuousQuery qry = new ContinuousQuery();

                    if (async) {
                        qry.setLocalListener(new TestCacheAsyncEventListener(queue, qryCntr));

                        qry.setRemoteFilterFactory(FactoryBuilder.factoryOf(
                            new CacheTestRemoteFilterAsync(ccfg.getName())));
                    }
                    else {
                        qry.setLocalListener(new TestCacheEventListener(queue, qryCntr));

                        qry.setRemoteFilterFactory(FactoryBuilder.factoryOf(
                            new CacheTestRemoteFilter(ccfg.getName())));
                    }

                    rcvdEvts.add(queue);

                    IgniteCache<Object, Object> cache = grid(idx).cache(ccfg.getName());

                    QueryCursor qryCursor = cache.query(qry);

                    qries.add(qryCursor);
                }
            }

            IgniteInternalFuture<Long> f = GridTestUtils.runMultiThreadedAsync(new Runnable() {
                @Override public void run() {
                    ThreadLocalRandom rnd = ThreadLocalRandom.current();

                    for (int i = 0; i < ITERATION_CNT; i++) {
                        IgniteCache<QueryTestKey, QueryTestValue> cache =
                            grid(rnd.nextInt(NODES)).cache(ccfg.getName());

                        QueryTestKey key = new QueryTestKey(rnd.nextInt(KEYS));

                        boolean startTx = atomicityMode(cache) != ATOMIC && rnd.nextBoolean();

                        Transaction tx = null;

                        boolean committed = false;

                        while (!committed && !Thread.currentThread().isInterrupted()) {
                            try {
                                if (startTx)
                                    tx = cache.unwrap(Ignite.class).transactions().txStart(PESSIMISTIC, REPEATABLE_READ);

                                if ((cache.get(key) == null) || rnd.nextBoolean()) {
                                    cache.invoke(key, new CacheEntryProcessor<QueryTestKey, QueryTestValue, Object>() {
                                        @Override public Object process(
                                            MutableEntry<QueryTestKey, QueryTestValue> entry,
                                            Object... arguments)
                                            throws EntryProcessorException {
                                            if (entry.exists())
                                                entry.setValue(new QueryTestValue(entry.getValue().val1 + 1));
                                            else
                                                entry.setValue(new QueryTestValue(0));

                                            return null;
                                        }
                                    });
                                }
                                else {
                                    QueryTestValue val;
                                    QueryTestValue newVal;

                                    do {
                                        val = cache.get(key);

                                        newVal = val == null ?
                                            new QueryTestValue(0) : new QueryTestValue(val.val1 + 1);
                                    }
                                    while (!cache.replace(key, val, newVal));
                                }

                                if (tx != null)
                                    tx.commit();

                                committed = true;
                            }
                            finally {
                                if (tx != null)
                                    tx.close();
                            }
                        }
                    }
                }
            }, threadCnt, "put-thread");

            f.get(15, TimeUnit.SECONDS);

            GridTestUtils.waitForCondition(new PA() {
                @Override public boolean apply() {
                    return qryCntr.get() >= ITERATION_CNT * threadCnt * LISTENER_CNT * NODES;
                }
            }, 1000L);

            for (BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>> queue : rcvdEvts)
                checkEvents(queue, ITERATION_CNT * threadCnt);

            assertFalse("Ordering invocations of filter broken.", fail);
        }
        finally {
            for (QueryCursor<?> qry : qries)
                qry.close();

            ignite(0).destroyCache(ccfg.getName());
        }
    }

    /**
     * @param queue Event queue.
     * @throws Exception If failed.
     */
    private void checkEvents(BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>> queue, int expCnt)
        throws Exception {
        CacheEntryEvent<QueryTestKey, QueryTestValue> evt;
        int cnt = 0;
        Map<QueryTestKey, Integer> vals = new HashMap<>();

        while ((evt = queue.poll(100, TimeUnit.MILLISECONDS)) != null) {
            assertNotNull(evt);
            assertNotNull(evt.getKey());

            Integer preVal = vals.get(evt.getKey());

            if (preVal == null)
                assertEquals(new QueryTestValue(0), evt.getValue());
            else {
                if (!new QueryTestValue(preVal + 1).equals(evt.getValue()))
                    assertEquals("Key event: " + evt.getKey(), new QueryTestValue(preVal + 1), evt.getValue());
            }

            vals.put(evt.getKey(), evt.getValue().val1);

            ++cnt;
        }

        assertEquals(expCnt, cnt);
    }

    /** {@inheritDoc} */
    @Override protected long getTestTimeout() {
        return TimeUnit.MINUTES.toMillis(8);
    }

    /**
     *
     */
    @IgniteAsyncCallback
    private static class CacheTestRemoteFilterAsync extends CacheTestRemoteFilter {
        /**
         * @param cacheName Cache name.
         */
        public CacheTestRemoteFilterAsync(String cacheName) {
            super(cacheName);
        }
    }

    /**
     *
     */
    private static class CacheTestRemoteFilter implements
        CacheEntryEventSerializableFilter<QueryTestKey, QueryTestValue> {
        /** */
        private Map<QueryTestKey, QueryTestValue> prevVals = new ConcurrentHashMap<>();

        /** */
        @IgniteInstanceResource
        private Ignite ignite;

        /** */
        private String cacheName;

        /**
         * @param cacheName Cache name.
         */
        public CacheTestRemoteFilter(String cacheName) {
            this.cacheName = cacheName;
        }

        /** {@inheritDoc} */
        @Override public boolean evaluate(CacheEntryEvent<? extends QueryTestKey, ? extends QueryTestValue> e) {
            if (affinity(ignite.cache(cacheName)).isPrimary(ignite.cluster().localNode(), e.getKey())) {
                QueryTestValue prevVal = prevVals.put(e.getKey(), e.getValue());

                if (prevVal != null) {
                    if (!new QueryTestValue(prevVal.val1 + 1).equals(e.getValue()))
                        fail = true;
                }
            }

            return true;
        }
    }

    /**
     *
     */
    @IgniteAsyncCallback
    private static class TestCacheAsyncEventListener extends TestCacheEventListener {
        /**
         * @param queue Queue.
         * @param cntr Received events counter.
         */
        public TestCacheAsyncEventListener(BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>> queue,
            AtomicInteger cntr) {
            super(queue, cntr, false);
        }
    }

    /**
     *
     */
    private static class TestCacheEventListener implements CacheEntryUpdatedListener<QueryTestKey, QueryTestValue> {
        /** */
        private final BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>> queue;

        /** */
        private final AtomicInteger cntr;

        /** */
        private final boolean delayOp;

        /**
         * @param queue Queue.
         * @param cntr Received events counter.
         */
        public TestCacheEventListener(BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>> queue,
            AtomicInteger cntr) {
            this(queue, cntr, true);
        }

        /**
         * @param queue Queue.
         * @param cntr Received events counter.
         * @param delayOp Delay operation to ensure verification of the serialization of notifications.
         */
        public TestCacheEventListener(BlockingQueue<CacheEntryEvent<QueryTestKey, QueryTestValue>> queue,
            AtomicInteger cntr, boolean delayOp) {
            this.queue = queue;
            this.cntr = cntr;
            this.delayOp = delayOp;
        }

        /** {@inheritDoc} */
        @Override public void onUpdated(Iterable<CacheEntryEvent<? extends QueryTestKey,
            ? extends QueryTestValue>> evts) {
            if (delayOp && ThreadLocalRandom.current().nextInt(5) == 1) {
                try {
                    U.sleep(10);
                }
                catch (IgniteInterruptedCheckedException ex) {
                    throw new CacheEntryListenerException(ex);
                }
            }

            for (CacheEntryEvent<? extends QueryTestKey, ? extends QueryTestValue> e : evts) {
                queue.add((CacheEntryEvent<QueryTestKey, QueryTestValue>)e);

                cntr.incrementAndGet();
            }
        }
    }

    /**
     * @param cacheMode Cache mode.
     * @param backups Number of backups.
     * @param atomicityMode Cache atomicity mode.
     * @param writeMode Cache write mode.
     * @return Cache configuration.
     */
    protected CacheConfiguration<Object, Object> cacheConfiguration(
        CacheMode cacheMode,
        int backups,
        CacheAtomicityMode atomicityMode,
        CacheWriteSynchronizationMode writeMode) {
        CacheConfiguration<Object, Object> ccfg = new CacheConfiguration<>(DEFAULT_CACHE_NAME);

        ccfg.setName("test-cache-" + atomicityMode + "-" + cacheMode + "-" + backups + "-" + UUID.randomUUID());
        // TODO GG-11220 (remove setName when fixed).
        ccfg.setAtomicityMode(atomicityMode);
        ccfg.setCacheMode(cacheMode);
        ccfg.setWriteSynchronizationMode(writeMode);

        if (cacheMode == PARTITIONED)
            ccfg.setBackups(backups);

        return ccfg;
    }

    /**
     *
     */
    public static class QueryTestKey implements Serializable, Comparable {
        /** */
        private final Integer key;

        /**
         * @param key Key.
         */
        public QueryTestKey(Integer key) {
            this.key = key;
        }

        /** {@inheritDoc} */
        @Override public boolean equals(Object o) {
            if (this == o)
                return true;

            if (o == null || getClass() != o.getClass())
                return false;

            QueryTestKey that = (QueryTestKey)o;

            return key.equals(that.key);
        }

        /** {@inheritDoc} */
        @Override public int hashCode() {
            return key.hashCode();
        }

        /** {@inheritDoc} */
        @Override public String toString() {
            return S.toString(QueryTestKey.class, this);
        }

        /** {@inheritDoc} */
        @Override public int compareTo(Object o) {
            return key - ((QueryTestKey)o).key;
        }
    }

    /**
     *
     */
    public static class QueryTestValue implements Serializable {
        /** */
        @GridToStringInclude
        protected final Integer val1;

        /** */
        @GridToStringInclude
        protected final String val2;

        /**
         * @param val Value.
         */
        public QueryTestValue(Integer val) {
            this.val1 = val;
            this.val2 = String.valueOf(val);
        }

        /** {@inheritDoc} */
        @Override public boolean equals(Object o) {
            if (this == o)
                return true;

            if (o == null || getClass() != o.getClass())
                return false;

            QueryTestValue that = (QueryTestValue)o;

            return val1.equals(that.val1) && val2.equals(that.val2);
        }

        /** {@inheritDoc} */
        @Override public int hashCode() {
            int res = val1.hashCode();

            res = 31 * res + val2.hashCode();

            return res;
        }

        /** {@inheritDoc} */
        @Override public String toString() {
            return S.toString(QueryTestValue.class, this);
        }
    }
}

