--- /dev/null
+#!/bin/bash
+
+IMAGE=juplo/technick-check:1.0-SNAPSHOT
+
+if [ "$1" = "cleanup" ]
+then
+ docker compose -f docker/docker-compose.yml down -t0 -v --remove-orphans
+ mvn clean
+ exit
+fi
+
+docker compose -f docker/docker-compose.yml up -d --remove-orphans kafka-1 kafka-2 kafka-3
+docker compose -f docker/docker-compose.yml rm -svf technick-check
+
+if [[
+ $(docker image ls -q $IMAGE) == "" ||
+ "$1" = "build"
+]]
+then
+ mvn clean install || exit
+else
+ echo "Using image existing images:"
+ docker image ls $IMAGE
+fi
+
+docker compose -f docker/docker-compose.yml up --remove-orphans setup || exit 1
+
+
+docker compose -f docker/docker-compose.yml up -d technick-check
--- /dev/null
+#!/bin/bash
+
+IMAGE=juplo/technick-check:1.0-SNAPSHOT
+
+if [ "$1" = "cleanup" ]
+then
+ docker compose -f docker/docker-compose.yml down -t0 -v --remove-orphans
+ mvn clean
+ exit
+fi
+
+docker compose -f docker/docker-compose.yml up -d --remove-orphans kafka-1 kafka-2 kafka-3
+docker compose -f docker/docker-compose.yml rm -svf technick-check
+
+if [[
+ $(docker image ls -q $IMAGE) == "" ||
+ "$1" = "build"
+]]
+then
+ mvn clean install || exit
+else
+ echo "Using image existing images:"
+ docker image ls $IMAGE
+fi
+
+docker compose -f docker/docker-compose.yml up --remove-orphans setup || exit 1
+
+
+docker compose -f docker/docker-compose.yml up -d technick-check
+++ /dev/null
-#!/bin/bash
-
-IMAGE=juplo/spring-producer:1.0-kafkatemplate-SNAPSHOT
-
-if [ "$1" = "cleanup" ]
-then
- docker compose -f docker/docker-compose.yml down -t0 -v --remove-orphans
- mvn clean
- exit
-fi
-
-docker compose -f docker/docker-compose.yml up -d --remove-orphans kafka-1 kafka-2 kafka-3
-docker compose -f docker/docker-compose.yml rm -svf producer
-
-if [[
- $(docker image ls -q $IMAGE) == "" ||
- "$1" = "build"
-]]
-then
- mvn clean install || exit
-else
- echo "Using image existing images:"
- docker image ls $IMAGE
-fi
-
-docker compose -f docker/docker-compose.yml up --remove-orphans setup || exit 1
-
-
-docker compose -f docker/docker-compose.yml up -d producer
-docker compose -f docker/docker-compose.yml up -d peter ute
-sleep 15
-
-docker compose -f docker/docker-compose.yml stop producer
-
-echo
-echo "Von peter empfangen:"
-docker compose -f docker/docker-compose.yml logs peter | grep '\ test\/.'
-echo
-echo "Von ute empfangen:"
-docker compose -f docker/docker-compose.yml logs ute | grep '\ test\/.'
-
-docker compose -f docker/docker-compose.yml stop peter ute
- kafka-2
- kafka-3
- producer:
- image: juplo/spring-producer:1.0-kafkatemplate-SNAPSHOT
- environment:
- spring.kafka.bootstrap-servers: kafka:9092
- spring.kafka.client-id: producer
- juplo.producer.topic: test
-
- consumer:
- image: juplo/simple-consumer:1.0-SNAPSHOT
- command: kafka:9092 test my-group consumer
-
- peter:
- image: juplo/simple-consumer:1.0-SNAPSHOT
- command: kafka:9092 test my-group peter
-
- ute:
- image: juplo/simple-consumer:1.0-SNAPSHOT
- command: kafka:9092 test my-group ute
+ technick-check:
+ image: juplo/technick-check:1.0-SNAPSHOT
volumes:
zookeeper-data:
</parent>
<groupId>de.juplo.kafka</groupId>
- <artifactId>spring-producer</artifactId>
- <name>Spring Producer</name>
- <description>A Simple Producer, based on the KafkaTemplate and Spring Boot, that sends messages via Kafka</description>
- <version>1.0-kafkatemplate-SNAPSHOT</version>
+ <artifactId>technick-check</artifactId>
+ <version>1.0-SNAPSHOT</version>
<properties>
<java.version>21</java.version>
+++ /dev/null
-package de.juplo.kafka;
-
-import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.ConfigurableApplicationContext;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.kafka.core.KafkaTemplate;
-
-import java.time.Duration;
-
-
-@Configuration
-@EnableConfigurationProperties(ApplicationProperties.class)
-public class ApplicationConfiguration
-{
- @Bean
- public ExampleProducer exampleProducer(
- ApplicationProperties properties,
- KafkaProperties kafkaProperties,
- KafkaTemplate<String, String> kafkaTemplate,
- ConfigurableApplicationContext applicationContext)
- {
- return
- new ExampleProducer(
- kafkaProperties.getClientId(),
- properties.getProducerProperties().getTopic(),
- properties.getProducerProperties().getThrottle() == null
- ? Duration.ofMillis(500)
- : properties.getProducerProperties().getThrottle(),
- kafkaTemplate,
- () -> applicationContext.close());
- }
-}
+++ /dev/null
-package de.juplo.kafka;
-
-import jakarta.validation.constraints.NotEmpty;
-import jakarta.validation.constraints.NotNull;
-import lombok.Getter;
-import lombok.Setter;
-import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.validation.annotation.Validated;
-
-import java.time.Duration;
-
-
-@ConfigurationProperties(prefix = "juplo")
-@Validated
-@Getter
-@Setter
-public class ApplicationProperties
-{
- @NotNull
- private ProducerProperties producer;
-
-
- public ProducerProperties getProducerProperties()
- {
- return producer;
- }
-
-
- @Validated
- @Getter
- @Setter
- static class ProducerProperties
- {
- @NotNull
- @NotEmpty
- private String topic;
- private Duration throttle;
- }
-}
+++ /dev/null
-package de.juplo.kafka;
-
-import lombok.extern.slf4j.Slf4j;
-import org.apache.kafka.clients.producer.RecordMetadata;
-import org.springframework.kafka.core.KafkaTemplate;
-import org.springframework.kafka.support.SendResult;
-
-import java.time.Duration;
-import java.util.concurrent.CompletableFuture;
-
-
-@Slf4j
-public class ExampleProducer implements Runnable
-{
- private final String id;
- private final String topic;
- private final Duration throttle;
- private final KafkaTemplate<String, String> kafkaTemplate;
- private final Thread workerThread;
- private final Runnable closeCallback;
-
- private volatile boolean running = true;
- private long produced = 0;
-
-
- public ExampleProducer(
- String id,
- String topic,
- Duration throttle,
- KafkaTemplate<String, String> kafkaTemplate,
- Runnable closeCallback)
- {
- this.id = id;
- this.topic = topic;
- this.throttle = throttle;
- this.kafkaTemplate = kafkaTemplate;
-
- workerThread = new Thread(this, "ExampleProducer Worker-Thread");
- workerThread.start();
-
- this.closeCallback = closeCallback;
- }
-
-
- @Override
- public void run()
- {
- long i = 0;
-
- try
- {
- for (; running; i++)
- {
- send(Long.toString(i%10), Long.toString(i));
-
- if (throttle.isPositive())
- {
- try
- {
- Thread.sleep(throttle);
- }
- catch (InterruptedException e)
- {
- log.warn("{} - Interrupted while throttling!", e);
- }
- }
- }
- }
- catch (Exception e)
- {
- log.error("{} - Unexpected error!", id, e);
- log.info("{} - Triggering exit of application!", id);
- new Thread(closeCallback).start();
- }
- finally
- {
- log.info("{}: Produced {} messages in total, exiting!", id, produced);
- }
- }
-
- void send(String key, String value)
- {
- final long time = System.currentTimeMillis();
-
- kafkaTemplate.send(topic, key, value).whenComplete((result, e) ->
- {
- long now = System.currentTimeMillis();
- if (e == null)
- {
- // HANDLE SUCCESS
- RecordMetadata metadata = result.getRecordMetadata();
- log.debug(
- "{} - Sent message {}={}, partition={}, offset={}, timestamp={}, latency={}ms",
- id,
- key,
- value,
- metadata.partition(),
- metadata.offset(),
- metadata.timestamp(),
- now - time
- );
- }
- else
- {
- // HANDLE ERROR
- log.error(
- "{} - ERROR for message {}={}, latency={}ms: {}",
- id,
- key,
- value,
- now - time,
- e.toString()
- );
- }
- });
-
- long now = System.currentTimeMillis();
- produced++;
- log.trace(
- "{} - Queued message {}={}, latency={}ms",
- id,
- key,
- value,
- now - time
- );
- }
-
-
- public void shutdown() throws InterruptedException
- {
- log.info("{} joining the worker-thread...", id);
- running = false;
- workerThread.join();
- }
-}
+++ /dev/null
-package de.juplo.kafka;
-
-import lombok.extern.slf4j.Slf4j;
-import org.apache.kafka.clients.consumer.ConsumerRecord;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.test.context.TestConfiguration;
-import org.springframework.context.annotation.Bean;
-import org.springframework.kafka.annotation.KafkaListener;
-import org.springframework.kafka.test.context.EmbeddedKafka;
-import org.springframework.test.web.servlet.MockMvc;
-
-import java.time.Duration;
-import java.util.LinkedList;
-import java.util.List;
-
-import static de.juplo.kafka.ApplicationTests.PARTITIONS;
-import static de.juplo.kafka.ApplicationTests.TOPIC;
-import static org.awaitility.Awaitility.await;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-
-@SpringBootTest(
- properties = {
- "spring.kafka.consumer.auto-offset-reset=earliest",
- "juplo.producer.topic=" + TOPIC})
-@AutoConfigureMockMvc
-@EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS)
-@Slf4j
-public class ApplicationTests
-{
- static final String TOPIC = "FOO";
- static final int PARTITIONS = 10;
-
- @Autowired
- MockMvc mockMvc;
- @Autowired
- Consumer consumer;
-
-
- @BeforeEach
- public void clear()
- {
- consumer.received.clear();
- }
-
-
- @Test
- public void testApplicationStartup()
- {
- await("Application is healthy")
- .atMost(Duration.ofSeconds(5))
- .untilAsserted(() -> mockMvc
- .perform(get("/actuator/health"))
- .andExpect(status().isOk())
- .andExpect(jsonPath("status").value("UP")));
- }
-
- @Test
- public void testSendMessage() throws Exception
- {
- await("Some messages were send")
- .atMost(Duration.ofSeconds(5))
- .until(() -> consumer.received.size() >= 1);
- }
-
-
- static class Consumer
- {
- final List<ConsumerRecord<String, String>> received = new LinkedList<>();
-
- @KafkaListener(groupId = "TEST", topics = TOPIC)
- public void receive(ConsumerRecord<String, String> record)
- {
- log.debug("Received message: {}", record);
- received.add(record);
- }
- }
-
- @TestConfiguration
- static class Configuration
- {
- @Bean
- Consumer consumer()
- {
- return new Consumer();
- }
- }
-}
projects / demos / kafka / training / commitdiff