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152
app/src/main/java/org/astraea/app/homework/SendYourData.java
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| /* | ||
| * 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.astraea.app.homework; | ||
|
|
||
| import com.beust.jcommander.Parameter; | ||
| import java.io.Closeable; | ||
| import java.io.IOException; | ||
| import java.nio.ByteBuffer; | ||
| import java.time.Duration; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.IntStream; | ||
| import org.apache.kafka.clients.producer.KafkaProducer; | ||
| import org.apache.kafka.clients.producer.ProducerConfig; | ||
| import org.apache.kafka.clients.producer.ProducerRecord; | ||
| import org.apache.kafka.common.serialization.ByteArraySerializer; | ||
| import org.apache.kafka.common.serialization.Serializer; | ||
| import org.astraea.app.argument.NonNegativeIntegerField; | ||
| import org.astraea.app.argument.StringListField; | ||
| import org.astraea.common.admin.Admin; | ||
| import org.astraea.common.admin.TopicPartition; | ||
|
|
||
| public class SendYourData { | ||
|
|
||
| private static final int NUMBER_OF_PARTITIONS = 4; | ||
|
|
||
| public static void main(String[] args) throws IOException { | ||
| execute(Argument.parse(new Argument(), args)); | ||
| } | ||
|
|
||
| public static void execute(final Argument param) throws IOException { | ||
| try (var admin = Admin.of(param.bootstrapServers())) { | ||
| param.topics.forEach( | ||
| t -> | ||
| admin | ||
| .creator() | ||
| .topic(t) | ||
| .numberOfReplicas((short) 1) | ||
| .numberOfPartitions(NUMBER_OF_PARTITIONS) | ||
| .run() | ||
| .toCompletableFuture() | ||
| .join()); | ||
| admin.waitCluster( | ||
| Set.copyOf(param.topics), | ||
| clusterInfo -> clusterInfo.topicNames().containsAll(param.topics), | ||
| Duration.ofSeconds(10), | ||
| 1); | ||
| } | ||
| var start = System.currentTimeMillis(); | ||
| var max = Runtime.getRuntime().totalMemory(); | ||
| var last = -1L; | ||
| try (var sender = new YourSender(param.bootstrapServers())) { | ||
| IntStream.range(0, param.count) | ||
| .forEach(index -> sender.send(param.topics, new Key(index, index, index))); | ||
| if (System.currentTimeMillis() - last > 5000) { | ||
| max = Math.max(max, Runtime.getRuntime().totalMemory()); | ||
| last = System.currentTimeMillis(); | ||
| } | ||
| } | ||
| var elapsed = (System.currentTimeMillis() - start); | ||
| max = Runtime.getRuntime().totalMemory(); | ||
|
|
||
| try (var admin = Admin.of(param.bootstrapServers())) { | ||
| var offsets = | ||
| param.topics.stream() | ||
| .collect( | ||
| Collectors.toUnmodifiableMap( | ||
| t -> t, | ||
| t -> | ||
| admin | ||
| .latestOffsets( | ||
| IntStream.range(0, NUMBER_OF_PARTITIONS) | ||
| .mapToObj(i -> TopicPartition.of(t, i)) | ||
| .collect(Collectors.toSet())) | ||
| .toCompletableFuture() | ||
| .join() | ||
| .values() | ||
| .stream() | ||
| .mapToLong(i -> i) | ||
| .sum())); | ||
| System.out.println("elapsed=" + elapsed); | ||
| System.out.println("memory=" + max); | ||
| offsets.forEach((t, o) -> System.out.println(t + "=" + o)); | ||
| } | ||
| } | ||
|
|
||
| public record Key(int v0, int v1, int v2) {} | ||
|
|
||
| public static class YourSender implements Closeable { | ||
| private final KafkaProducer<Key, byte[]> producer; | ||
|
|
||
| @Override | ||
| public void close() throws IOException { | ||
| producer.close(); | ||
| } | ||
|
|
||
| public YourSender(String bootstrapServers) { | ||
| Serializer<Key> serializer = | ||
| (topic, key) -> { | ||
| var buffer = ByteBuffer.allocate(Long.BYTES + Integer.BYTES + Long.BYTES); | ||
| buffer.putInt(key.v0); | ||
| buffer.putInt(key.v1); | ||
| buffer.putInt(key.v2); | ||
| buffer.flip(); | ||
| var bytes = new byte[buffer.remaining()]; | ||
| buffer.get(bytes); | ||
| return bytes; | ||
| }; | ||
| producer = | ||
| new KafkaProducer<>( | ||
| Map.of(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers), | ||
| serializer, | ||
| new ByteArraySerializer()); | ||
| } | ||
|
|
||
| public void send(List<String> topic, Key key) { | ||
| topic.forEach(t -> producer.send(new ProducerRecord<>(t, key, null))); | ||
| } | ||
| } | ||
|
|
||
| public static class Argument extends org.astraea.app.argument.Argument { | ||
| @Parameter( | ||
| names = {"--topics"}, | ||
| description = "List<String>: topic names which you subscribed", | ||
| validateWith = StringListField.class, | ||
| listConverter = StringListField.class, | ||
| required = true) | ||
| List<String> topics; | ||
|
|
||
| @Parameter( | ||
| names = {"--count"}, | ||
| description = "Long: the record count", | ||
| validateWith = NonNegativeIntegerField.class) | ||
| int count = 100; | ||
| } | ||
| } |
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