| /* |
| * 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.apache.flink.statefun.playground.java.showcase.part6.serving; |
| |
| import org.apache.flink.statefun.playground.java.showcase.part1.types.UserLogin; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.testcontainers.Testcontainers; |
| import org.testcontainers.containers.BindMode; |
| import org.testcontainers.containers.GenericContainer; |
| import org.testcontainers.containers.KafkaContainer; |
| import org.testcontainers.containers.Network; |
| import org.testcontainers.containers.output.Slf4jLogConsumer; |
| import org.testcontainers.utility.DockerImageName; |
| |
| /** |
| * A Java program that starts a few containerized processes using {@link Testcontainers}: |
| * |
| * <ul> |
| * <li>A set of StateFun processes, including a manager and a worker. |
| * <li>A Kafka broker, to be used as an ingress and egress for our User Greeter application. |
| * <li>A single-threaded Kafka producer that writes mock user login events (JSON messages) to the |
| * ingress Kafka topic. |
| * </ul> |
| * |
| * <p>This program is intended to run side-by-side against functions that are served by the {@link |
| * GreeterAppServer} program. |
| * |
| * <p>If you want to play around a bit, you can also modify the JSONs being sent to the ingress |
| * Kafka topic by modifying the {@literal user-logins.txt} file under {@literal src/main/resources}, |
| * and then restarting this program. If you do touch the JSONs, remember to also adapt the {@link |
| * UserLogin} class with the changes. |
| */ |
| public final class StatefulFunctionsRuntimeProcesses { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(StatefulFunctionsRuntimeProcesses.class); |
| |
| private static final Network NETWORK = Network.newNetwork(); |
| |
| private static final KafkaContainer KAFKA = kafkaContainer(NETWORK); |
| private static final GenericContainer<?> STATEFUN_MANAGER = managerContainer(NETWORK); |
| private static final GenericContainer<?> STATEFUN_WORKER = |
| workerContainer(NETWORK).dependsOn(STATEFUN_MANAGER, KAFKA); |
| private static final GenericContainer<?> KAFKA_JSON_PRODUCER = |
| jsonProducerContainer(NETWORK).dependsOn(STATEFUN_WORKER, KAFKA); |
| |
| public static void main(String[] args) throws Exception { |
| try { |
| KAFKA.start(); |
| STATEFUN_MANAGER.start(); |
| |
| Testcontainers.exposeHostPorts(GreeterAppServer.PORT); |
| STATEFUN_WORKER.start(); |
| KAFKA_JSON_PRODUCER.start(); |
| |
| sleep(); |
| } finally { |
| KAFKA_JSON_PRODUCER.stop(); |
| STATEFUN_WORKER.stop(); |
| STATEFUN_MANAGER.stop(); |
| KAFKA.stop(); |
| } |
| } |
| |
| private static KafkaContainer kafkaContainer(Network network) { |
| return new KafkaContainer(DockerImageName.parse("confluentinc/cp-kafka:5.4.3")) |
| .withNetwork(network) |
| .withNetworkAliases("kafka"); |
| } |
| |
| private static GenericContainer<?> managerContainer(Network network) { |
| return new GenericContainer<>(DockerImageName.parse("apache/flink-statefun:3.3.0")) |
| .withNetwork(network) |
| .withNetworkAliases("statefun-manager") |
| .withEnv("ROLE", "master") |
| .withEnv("MASTER_HOST", "statefun-manager") |
| .withExposedPorts(8081) |
| .withLogConsumer(new Slf4jLogConsumer(LOG)) |
| .withClasspathResourceMapping( |
| "module.yaml", "/opt/statefun/modules/greeter/module.yaml", BindMode.READ_ONLY); |
| } |
| |
| private static GenericContainer<?> workerContainer(Network network) { |
| return new GenericContainer<>(DockerImageName.parse("apache/flink-statefun:3.3.0")) |
| .withNetwork(network) |
| .withNetworkAliases("statefun-worker") |
| .withEnv("ROLE", "worker") |
| .withEnv("MASTER_HOST", "statefun-manager") |
| .withClasspathResourceMapping( |
| "module.yaml", "/opt/statefun/modules/greeter/module.yaml", BindMode.READ_ONLY); |
| } |
| |
| private static GenericContainer<?> jsonProducerContainer(Network network) { |
| return new GenericContainer<>( |
| DockerImageName.parse("ververica/statefun-playground-producer:latest")) |
| .withNetwork(network) |
| .withClasspathResourceMapping( |
| "user-logins.txt", "/opt/statefun/user-logins.txt", BindMode.READ_ONLY) |
| .withEnv("APP_PATH", "/opt/statefun/user-logins.txt") |
| .withEnv("APP_KAFKA_HOST", "kafka:9092") |
| .withEnv("APP_KAFKA_TOPIC", "user-logins") |
| .withEnv("APP_JSON_PATH", "user_id"); |
| } |
| |
| private static void sleep() throws Exception { |
| while (true) { |
| Thread.sleep(10000); |
| } |
| } |
| } |