CMap2EngineReplicatorTest.java

/*
 * Copyright 2016 higherfrequencytrading.com
 *
 *  Licensed 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 net.openhft.chronicle.engine.map;

import net.openhft.chronicle.bytes.Bytes;
import net.openhft.chronicle.bytes.BytesStore;
import net.openhft.chronicle.core.threads.ThreadDump;
import net.openhft.chronicle.engine.api.EngineReplication.ModificationIterator;
import net.openhft.chronicle.engine.api.EngineReplication.ReplicationEntry;
import net.openhft.chronicle.map.ChronicleMap;
import net.openhft.chronicle.map.ChronicleMapBuilder;
import net.openhft.chronicle.wire.TextWire;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

import java.nio.ByteBuffer;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;

import static java.nio.ByteBuffer.allocateDirect;
import static java.nio.charset.StandardCharsets.ISO_8859_1;
import static net.openhft.chronicle.bytes.NativeBytesStore.wrap;
import static net.openhft.chronicle.hash.replication.SingleChronicleHashReplication.builder;

/**
 * Created by Rob Austin
 */

public class CMap2EngineReplicatorTest {

    private ThreadDump threadDump;

    @Before
    public void threadDump() {
        threadDump = new ThreadDump();
    }

    @After
    public void checkThreadDump() {
        threadDump.assertNoNewThreads();
    }

    /**
     * tests when the put has come locally from the server map
     */
    @Test
    public void testLocalPut() throws InterruptedException {

        @Nullable final CMap2EngineReplicator replicator = new CMap2EngineReplicator(null);

        ChronicleMap<String, String> map = ChronicleMapBuilder.of(String.class, String.class).
                replication(builder().engineReplication(replicator).createWithId((byte) 2)).create();

        @Nullable final ModificationIterator modificationIterator = replicator.acquireModificationIterator((byte) 1);
        map.put("hello", "world");

        @NotNull BlockingQueue<ReplicationEntry> q = new ArrayBlockingQueue<>(1);

        while (modificationIterator.hasNext()) {
            modificationIterator.nextEntry(q::add);
        }

        final ReplicationEntry entry = q.take();

        Assert.assertEquals("hello", new TextWire(entry.key().bytesForRead()).getValueIn().text());

        @Nullable final BytesStore value = entry.value();
        Assert.assertEquals("world", (value == null) ? null : new TextWire(value.bytesForRead()).getValueIn().text());

        Assert.assertEquals(2, entry.identifier());
    }

    /**
     * tests when the put has come locally from another map with a remote identifier
     */
    @Test
    public void testRemotePut() {

        @NotNull final CMap2EngineReplicator replicator = new CMap2EngineReplicator(null);

        ChronicleMap map = ChronicleMapBuilder.of(String.class, String.class).
                replication(builder().engineReplication(replicator).createWithId((byte) 2)).create();

        final Bytes<ByteBuffer> key = wrap(allocateDirect(1024)).bytesForWrite();
        final Bytes<ByteBuffer> value = wrap(allocateDirect(1024)).bytesForWrite();

        key.write("hello".getBytes(ISO_8859_1));
        value.write("world".getBytes(ISO_8859_1));

        replicator.put(key, value, (byte) 1, System.currentTimeMillis());

        Assert.assertEquals("world", map.get("hello"));

    }
}