/*
* 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.kafka.streams.state.internals;
import org.apache.kafka.common.serialization.Serializer;
import org.apache.kafka.streams.processor.StreamPartitioner;
import org.apache.kafka.streams.processor.internals.RecordCollectorImpl;
import org.apache.kafka.streams.state.StateSerdes;
import org.apache.kafka.test.MockProcessorContext;
import org.junit.After;
import org.junit.Test;
import java.util.HashMap;
import java.util.Map;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
public class StoreChangeLoggerTest {
private final String topic = "topic";
private final Map<Integer, String> logged = new HashMap<>();
private final MockProcessorContext context = new MockProcessorContext(StateSerdes.withBuiltinTypes(topic, Integer.class, String.class),
new RecordCollectorImpl(null, "StoreChangeLoggerTest") {
@SuppressWarnings("unchecked")
@Override
public <K1, V1> void send(final String topic,
final K1 key,
final V1 value,
final Integer partition,
final Long timestamp,
final Serializer<K1> keySerializer,
final Serializer<V1> valueSerializer) {
logged.put((Integer) key, (String) value);
}
@Override
public <K1, V1> void send(final String topic,
final K1 key,
final V1 value,
final Long timestamp,
final Serializer<K1> keySerializer,
final Serializer<V1> valueSerializer,
final StreamPartitioner<? super K1, ? super V1> partitioner) {
throw new UnsupportedOperationException();
}
}
);
private final StoreChangeLogger<Integer, String> changeLogger = new StoreChangeLogger<>(topic, context, StateSerdes.withBuiltinTypes(topic, Integer.class, String.class));
@After
public void after() {
context.close();
}
@SuppressWarnings("unchecked")
@Test
public void testAddRemove() throws Exception {
context.setTime(1);
changeLogger.logChange(0, "zero");
changeLogger.logChange(1, "one");
changeLogger.logChange(2, "two");
assertEquals("zero", logged.get(0));
assertEquals("one", logged.get(1));
assertEquals("two", logged.get(2));
changeLogger.logChange(0, null);
assertNull(logged.get(0));
}
}