first commit

This commit is contained in:
Shautvast 2024-11-18 17:31:39 +01:00
commit 51dcc1bf27
9 changed files with 1164 additions and 0 deletions

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.gitignore vendored Normal file
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target/
!.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
!**/src/test/**/target/
### IntelliJ IDEA ###
.idea/modules.xml
.idea/jarRepositories.xml
.idea/compiler.xml
.idea/libraries/
*.iws
*.iml
*.ipr
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
!**/src/main/**/build/
!**/src/test/**/build/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store

1
README.md Normal file
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https://blog.top-squad.nl/kafka TBD

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version: '3.5'
services:
schema-registry:
image: confluentinc/cp-schema-registry:latest
hostname: schema-registry
depends_on:
- kafka1
- kafka2
- kafka3
ports:
- "8081:8081"
environment:
SCHEMA_REGISTRY_HOST_NAME: schema-registry
SCHEMA_REGISTRY_LISTENERS: http://schema-registry:8081
SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: PLAINTEXT://kafka1:19092,PLAINTEXT://kafka2:19093,PLAINTEXT://kafka3:19094
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
SCHEMA_REGISTRY_DEBUG: 'true'
kafka1:
image: confluentinc/cp-kafka:latest
hostname: kafka1
container_name: kafka1
ports:
- "39092:39092"
environment:
KAFKA_LISTENERS: BROKER://kafka1:19092,EXTERNAL://kafka1:39092,CONTROLLER://kafka1:9093
KAFKA_ADVERTISED_LISTENERS: BROKER://kafka1:19092,EXTERNAL://localhost:39092
KAFKA_INTER_BROKER_LISTENER_NAME: BROKER
KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
KAFKA_PROCESS_ROLES: 'controller,broker'
KAFKA_NODE_ID: 1
KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka1:9093,2@kafka2:9093,3@kafka3:9093'
KAFKA_METADATA_LOG_SEGMENT_MS: 15000
KAFKA_METADATA_MAX_RETENTION_MS: 1200000
KAFKA_METADATA_LOG_MAX_RECORD_BYTES_BETWEEN_SNAPSHOTS: 2800
KAFKA_LOG_DIRS: '/tmp/kraft-combined-logs'
CLUSTER_ID: 'mycluster'
volumes:
- kafka1-data:/var/lib/kafka/data
kafka2:
image: confluentinc/cp-kafka:latest
hostname: kafka2
container_name: kafka2
ports:
- "39093:39093"
environment:
KAFKA_LISTENERS: BROKER://kafka2:19093,EXTERNAL://kafka2:39093,CONTROLLER://kafka2:9093
KAFKA_ADVERTISED_LISTENERS: BROKER://kafka2:19093,EXTERNAL://kafka2:39093
KAFKA_INTER_BROKER_LISTENER_NAME: BROKER
KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
KAFKA_PROCESS_ROLES: 'controller,broker'
KAFKA_NODE_ID: 2
KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka1:9093,2@kafka2:9093,3@kafka3:9093'
KAFKA_METADATA_LOG_SEGMENT_MS: 15000
KAFKA_METADATA_MAX_RETENTION_MS: 1200000
KAFKA_METADATA_LOG_MAX_RECORD_BYTES_BETWEEN_SNAPSHOTS: 2800
KAFKA_LOG_DIRS: '/tmp/kraft-combined-logs'
CLUSTER_ID: 'mycluster'
volumes:
- kafka2-data:/var/lib/kafka/data
kafka3:
image: confluentinc/cp-kafka:latest
hostname: kafka3
container_name: kafka3
ports:
- "39094:39094"
environment:
KAFKA_LISTENERS: BROKER://kafka3:19094,EXTERNAL://kafka3:39094,CONTROLLER://kafka3:9093
KAFKA_ADVERTISED_LISTENERS: BROKER://kafka3:19094,EXTERNAL://kafka3:39094
KAFKA_INTER_BROKER_LISTENER_NAME: BROKER
KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
KAFKA_PROCESS_ROLES: 'controller,broker'
KAFKA_NODE_ID: 3
KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka1:9093,2@kafka2:9093,3@kafka3:9093'
KAFKA_METADATA_LOG_SEGMENT_MS: 15000
KAFKA_METADATA_MAX_RETENTION_MS: 1200000
KAFKA_METADATA_LOG_MAX_RECORD_BYTES_BETWEEN_SNAPSHOTS: 2800
KAFKA_LOG_DIRS: '/tmp/kraft-combined-logs'
CLUSTER_ID: 'mycluster'
volumes:
- kafka3-data:/var/lib/kafka/data
volumes:
kafka1-data:
kafka2-data:
kafka3-data:

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java/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.github.shautvast</groupId>
<artifactId>avro-example</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>22</maven.compiler.source>
<maven.compiler.target>22</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<avro.version>1.11.4</avro.version>
<kafka.version>3.8.0</kafka.version>
<kafka.serializer.version>7.7.1</kafka.serializer.version>
</properties>
<repositories>
<repository>
<id>confluent</id>
<url>https://packages.confluent.io/maven/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.apache.avro</groupId>
<artifactId>avro</artifactId>
<version>${avro.version}</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>${kafka.version}</version>
</dependency>
<dependency>
<groupId>io.confluent</groupId>
<artifactId>kafka-avro-serializer</artifactId>
<version>${kafka.serializer.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.avro</groupId>
<artifactId>avro-maven-plugin</artifactId>
<version>${avro.version}</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>schema</goal>
</goals>
<configuration>
<stringType>String</stringType>
<sourceDirectory>${project.basedir}/src/main/resources/avro/</sourceDirectory>
<outputDirectory>${project.build.directory}/generated/java/</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>3.5.0</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>${project.build.directory}/generated/java</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

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package org.github.shautvast.avro;
import example.avro.Person;
import io.confluent.kafka.serializers.KafkaAvroSerializer;
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.clients.producer.RecordMetadata;
import org.apache.kafka.common.serialization.StringSerializer;
import java.util.Properties;
import java.util.concurrent.Future;
public class Main {
public static void main(String[] args) {
Properties properties = new Properties();
properties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092,localhost:9093,localhost:9094");
properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, KafkaAvroSerializer.class);
properties.put("schema.registry.url", "http://localhost:8081");
Person person = new Person();
person.setName("Arthur Dent");
person.setFavoriteNumber(42);
person.setHeight(1.90);
// Prepare a message to send
ProducerRecord<String, Person> record = new ProducerRecord<>("rustonomicon", "arthur", person);
try (KafkaProducer<String, Person> producer = new KafkaProducer<>(properties)) {
// Send the message; note that this is asynchronous
Future<RecordMetadata> future = producer.send(record);
// For this example, we're going to block and get the response; don't do this in production!
RecordMetadata metadata = future.get();
// Print the offset and partition of the message
System.out.println("Message sent to partition " + metadata.partition() + ", offset " + metadata.offset());
} catch (Exception e) {
e.printStackTrace();
}
}
}

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{
"namespace": "example.avro",
"type" : "record",
"name" : "Person",
"doc" : "Ape descendent creature dwelling on planet Earth",
"aliases": ["Human"],
"fields" : [
{
"name" : "name",
"type" : "string"
},
{
"name" : "favorite_number",
"type" : "int"
},
{
"name" : "height",
"type" : "double"
}
]
}

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13
rust/Cargo.toml Normal file
View file

@ -0,0 +1,13 @@
[package]
name = "rust"
version = "0.1.0"
edition = "2021"
[dependencies]
kafka = "0.10"
apache-avro = "0.17.0"
anyhow = "1.0"
# serde_avro_derive = "0.3.1"
serde_avro_fast = "2.0.0"
serde_derive = "1.0.215"
serde = "1.0.215"

58
rust/src/main.rs Normal file
View file

@ -0,0 +1,58 @@
use kafka::{client::GroupOffsetStorage, consumer::Consumer};
fn main() -> anyhow::Result<()> {
let schema: serde_avro_fast::Schema = r#"
{
"namespace": "example.avro",
"type" : "record",
"name" : "Person",
"doc" : "Ape descendent creature dwelling on planet Earth",
"aliases": ["Human"],
"fields" : [
{
"name" : "name",
"type" : "string"
},
{
"name" : "favorite_number",
"type" : "int"
},
{
"name" : "height",
"type" : "double"
}
]
}"#
.parse()
.expect("Failed to parse schema");
let mut consumer = Consumer::from_hosts(vec!["localhost:19092".into()])
.with_topic_partitions("rustonomicon".to_owned(), &[0])
.with_group("mygroup".into())
.with_offset_storage(Some(GroupOffsetStorage::Kafka))
.create()
.unwrap();
loop {
let message = consumer.poll()?;
for ms in message.iter() {
for m in ms.messages().iter() {
let person = serde_avro_fast::from_datum_slice::<Person>(&m.value[5..], &schema)
.expect("Failed to deserialize");
println!("{:?}", person.name);
consumer.consume_message("rustonomicon", ms.partition(), m.offset)?;
}
consumer.commit_consumed()?;
}
}
// Ok(())
}
#[derive(Debug, PartialEq, serde::Serialize, serde::Deserialize)]
struct Person<'a> {
name: &'a str,
favorite_number: u32,
height: f64,
}