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* 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.
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package org.apache.kafka.streams.kstream.internals;
import org.apache.kafka.clients.producer.internals.DefaultPartitioner;
import org.apache.kafka.common.Cluster;
import org.apache.kafka.common.Node;
import org.apache.kafka.common.PartitionInfo;
import org.apache.kafka.common.serialization.ByteArraySerializer;
import org.apache.kafka.common.serialization.ByteArrayDeserializer;
import org.apache.kafka.common.serialization.IntegerSerializer;
import org.apache.kafka.common.serialization.Serializer;
import org.apache.kafka.common.serialization.StringSerializer;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.apache.kafka.common.serialization.Deserializer;
import org.apache.kafka.streams.StreamsConfig;
import org.apache.kafka.streams.kstream.Windowed;
import org.junit.Test;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Random;
import java.util.Map;
import java.util.HashMap;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
public class WindowedStreamPartitionerTest {
private String topicName = "topic";
private IntegerSerializer intSerializer = new IntegerSerializer();
private StringSerializer stringSerializer = new StringSerializer();
private List<PartitionInfo> infos = Arrays.asList(
new PartitionInfo(topicName, 0, Node.noNode(), new Node[0], new Node[0]),
new PartitionInfo(topicName, 1, Node.noNode(), new Node[0], new Node[0]),
new PartitionInfo(topicName, 2, Node.noNode(), new Node[0], new Node[0]),
new PartitionInfo(topicName, 3, Node.noNode(), new Node[0], new Node[0]),
new PartitionInfo(topicName, 4, Node.noNode(), new Node[0], new Node[0]),
new PartitionInfo(topicName, 5, Node.noNode(), new Node[0], new Node[0])
);
private Cluster cluster = new Cluster("cluster", Collections.singletonList(Node.noNode()), infos,
Collections.<String>emptySet(), Collections.<String>emptySet());
@Test
public void testCopartitioning() {
Random rand = new Random();
DefaultPartitioner defaultPartitioner = new DefaultPartitioner();
WindowedSerializer<Integer> windowedSerializer = new WindowedSerializer<>(intSerializer);
WindowedStreamPartitioner<Integer, String> streamPartitioner = new WindowedStreamPartitioner<>(topicName, windowedSerializer);
for (int k = 0; k < 10; k++) {
Integer key = rand.nextInt();
byte[] keyBytes = intSerializer.serialize(topicName, key);
String value = key.toString();
byte[] valueBytes = stringSerializer.serialize(topicName, value);
Integer expected = defaultPartitioner.partition("topic", key, keyBytes, value, valueBytes, cluster);
for (int w = 1; w < 10; w++) {
TimeWindow window = new TimeWindow(10 * w, 20 * w);
Windowed<Integer> windowedKey = new Windowed<>(key, window);
Integer actual = streamPartitioner.partition(windowedKey, value, infos.size());
assertEquals(expected, actual);
}
}
}
@Test
public void testWindowedSerializerNoArgConstructors() {
Map<String, String> props = new HashMap<>();
// test key[value].serializer.inner.class takes precedence over serializer.inner.class
WindowedSerializer<StringSerializer> windowedSerializer = new WindowedSerializer<>();
props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "host:1");
props.put(StreamsConfig.APPLICATION_ID_CONFIG, "appId");
props.put("key.serializer.inner.class", "org.apache.kafka.common.serialization.StringSerializer");
props.put("serializer.inner.class", "org.apache.kafka.common.serialization.StringSerializer");
windowedSerializer.configure(props, true);
Serializer<?> inner = windowedSerializer.innerSerializer();
assertNotNull("Inner serializer should be not null", inner);
assertTrue("Inner serializer type should be StringSerializer", inner instanceof StringSerializer);
// test serializer.inner.class
props.put("serializer.inner.class", "org.apache.kafka.common.serialization.ByteArraySerializer");
props.remove("key.serializer.inner.class");
props.remove("value.serializer.inner.class");
WindowedSerializer<?> windowedSerializer1 = new WindowedSerializer<>();
windowedSerializer1.configure(props, false);
Serializer<?> inner1 = windowedSerializer1.innerSerializer();
assertNotNull("Inner serializer should be not null", inner1);
assertTrue("Inner serializer type should be ByteArraySerializer", inner1 instanceof ByteArraySerializer);
}
@Test
public void testWindowedDeserializerNoArgConstructors() {
Map<String, String> props = new HashMap<>();
// test key[value].deserializer.inner.class takes precedence over serializer.inner.class
WindowedDeserializer<StringSerializer> windowedDeserializer = new WindowedDeserializer<>();
props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "host:1");
props.put(StreamsConfig.APPLICATION_ID_CONFIG, "appId");
props.put("key.deserializer.inner.class", "org.apache.kafka.common.serialization.StringDeserializer");
props.put("deserializer.inner.class", "org.apache.kafka.common.serialization.StringDeserializer");
windowedDeserializer.configure(props, true);
Deserializer<?> inner = windowedDeserializer.innerDeserializer();
assertNotNull("Inner deserializer should be not null", inner);
assertTrue("Inner deserializer type should be StringDeserializer", inner instanceof StringDeserializer);
// test deserializer.inner.class
props.put("deserializer.inner.class", "org.apache.kafka.common.serialization.ByteArrayDeserializer");
props.remove("key.deserializer.inner.class");
props.remove("value.deserializer.inner.class");
WindowedDeserializer<?> windowedDeserializer1 = new WindowedDeserializer<>();
windowedDeserializer1.configure(props, false);
Deserializer<?> inner1 = windowedDeserializer1.innerDeserializer();
assertNotNull("Inner deserializer should be not null", inner1);
assertTrue("Inner deserializer type should be ByteArrayDeserializer", inner1 instanceof ByteArrayDeserializer);
}
}