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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2020, Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import java.io.IOException;
import java.io.PrintWriter;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.KafkaException;
import java.lang.Integer;
import java.util.HashMap;
import java.util.Properties;
public class TransactionProducerCli {
enum TransactionType {
None,
BeginAbort,
BeginCommit,
BeginOpen,
ContinueAbort,
ContinueCommit,
ContinueOpen
}
enum FlushType {
DoFlush,
DontFlush
}
static Producer<byte[], byte[]> createProducer(String testid, String id, String brokerList, boolean transactional) {
Properties producerConfig = new Properties();
producerConfig.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, brokerList);
producerConfig.put(ProducerConfig.CLIENT_ID_CONFIG, transactional ? "transactional-producer-" + id : "producer-" + id);
producerConfig.put(ProducerConfig.ENABLE_IDEMPOTENCE_CONFIG, true);
if (transactional) {
producerConfig.put(ProducerConfig.TRANSACTIONAL_ID_CONFIG, "test-transactional-id-" + testid + "-" + id);
}
producerConfig.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.ByteArraySerializer");
producerConfig.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.ByteArraySerializer");
producerConfig.put(ProducerConfig.LINGER_MS_CONFIG, "5"); // ensure batching.
Producer<byte[], byte[]> producer = new KafkaProducer<>(producerConfig);
if (transactional) {
producer.initTransactions();
}
return producer;
}
static void makeTestMessages(
Producer<byte[], byte[]> producer,
String topic, int partition,
int idStart, int count,
TransactionType tt,
FlushType flush) throws InterruptedException {
byte[] payload = { 0x10, 0x20, 0x30, 0x40 };
if (tt != TransactionType.None &&
tt != TransactionType.ContinueOpen &&
tt != TransactionType.ContinueCommit &&
tt != TransactionType.ContinueAbort) {
producer.beginTransaction();
}
for (int i = 0; i <count; ++i) {
ProducerRecord<byte[], byte[]> r = partition != -1
? new ProducerRecord<byte[],byte[]>(topic, partition, new byte[] { (byte)(i + idStart) }, payload)
: new ProducerRecord<byte[], byte[]>(topic, new byte[] { (byte)(i + idStart) }, payload);
producer.send(r);
}
if (flush == FlushType.DoFlush) {
producer.flush();
}
if (tt == TransactionType.BeginAbort || tt == TransactionType.ContinueAbort) {
producer.abortTransaction();
} else if (tt == TransactionType.BeginCommit || tt == TransactionType.ContinueCommit) {
producer.commitTransaction();
}
}
static String[] csvSplit(String input) {
return input.split("\\s*,\\s*");
}
public static void main (String[] args) throws Exception {
String bootstrapServers = args[0];
HashMap<String, Producer<byte[], byte[]>> producers = new HashMap<String, Producer<byte[], byte[]>>();
String topic = null;
String testid = null;
/* Parse commands */
for (int i = 1 ; i < args.length ; i++) {
String cmd[] = csvSplit(args[i]);
System.out.println("TransactionProducerCli.java: command: '" + args[i] + "'");
if (cmd[0].equals("sleep")) {
Thread.sleep(Integer.decode(cmd[1]));
} else if (cmd[0].equals("exit")) {
System.exit(Integer.decode(cmd[1]));
} else if (cmd[0].equals("topic")) {
topic = cmd[1];
} else if (cmd[0].equals("testid")) {
testid = cmd[1];
} else if (cmd[0].startsWith("producer")) {
Producer<byte[], byte[]> producer = producers.get(cmd[0]);
if (producer == null) {
producer = createProducer(testid, cmd[0], bootstrapServers,
TransactionType.valueOf(cmd[4]) != TransactionType.None);
producers.put(cmd[0], producer);
}
makeTestMessages(producer, /* producer */
topic, /* topic */
Integer.decode(cmd[1]), /* partition, or -1 for any */
Integer.decode(cmd[2]), /* idStart */
Integer.decode(cmd[3]), /* msg count */
TransactionType.valueOf(cmd[4]), /* TransactionType */
FlushType.valueOf(cmd[5])); /* Flush */
} else {
throw new Exception("Unknown command: " + args[i]);
}
}
producers.forEach((k,p) -> p.close());
}
}
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