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Kostromin, Maksim
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‎.gitignore‎

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**/src/main/gen/**
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target/
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!.mvn/wrapper/maven-wrapper.jar
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!**/src/main/**/target/
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!**/src/test/**/target/
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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build/
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!**/src/main/**/build/
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!**/src/test/**/build/
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### VS Code ###
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.vscode/

‎.mvn/wrapper/MavenWrapperDownloader.java‎

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/*
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* Copyright 2007-present the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import java.net.*;
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import java.io.*;
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import java.nio.channels.*;
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import java.util.Properties;
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public class MavenWrapperDownloader {
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private static final String WRAPPER_VERSION = "0.5.6";
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/**
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* Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
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*/
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private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
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+ WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
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/**
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* Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
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* use instead of the default one.
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*/
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private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
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".mvn/wrapper/maven-wrapper.properties";
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/**
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* Path where the maven-wrapper.jar will be saved to.
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*/
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private static final String MAVEN_WRAPPER_JAR_PATH =
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".mvn/wrapper/maven-wrapper.jar";
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/**
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* Name of the property which should be used to override the default download url for the wrapper.
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*/
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private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
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public static void main(String args[]) {
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System.out.println("- Downloader started");
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File baseDirectory = new File(args[0]);
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System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
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// If the maven-wrapper.properties exists, read it and check if it contains a custom
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// wrapperUrl parameter.
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File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
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String url = DEFAULT_DOWNLOAD_URL;
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if (mavenWrapperPropertyFile.exists()) {
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FileInputStream mavenWrapperPropertyFileInputStream = null;
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try {
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mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
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Properties mavenWrapperProperties = new Properties();
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mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
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url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
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} catch (IOException e) {
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System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
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} finally {
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try {
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if (mavenWrapperPropertyFileInputStream != null) {
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mavenWrapperPropertyFileInputStream.close();
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}
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} catch (IOException e) {
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// Ignore ...
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}
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}
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}
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System.out.println("- Downloading from: " + url);
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File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
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if (!outputFile.getParentFile().exists()) {
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if (!outputFile.getParentFile().mkdirs()) {
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System.out.println(
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"- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
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}
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}
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System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
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try {
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downloadFileFromURL(url, outputFile);
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System.out.println("Done");
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System.exit(0);
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} catch (Throwable e) {
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System.out.println("- Error downloading");
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e.printStackTrace();
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System.exit(1);
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}
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}
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private static void downloadFileFromURL(String urlString, File destination) throws Exception {
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if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
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String username = System.getenv("MVNW_USERNAME");
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char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
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Authenticator.setDefault(new Authenticator() {
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@Override
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protected PasswordAuthentication getPasswordAuthentication() {
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return new PasswordAuthentication(username, password);
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}
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});
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}
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URL website = new URL(urlString);
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ReadableByteChannel rbc;
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rbc = Channels.newChannel(website.openStream());
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FileOutputStream fos = new FileOutputStream(destination);
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fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
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fos.close();
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rbc.close();
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}
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}

‎.mvn/wrapper/maven-wrapper.jar‎

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‎.mvn/wrapper/maven-wrapper.properties‎

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distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.2/apache-maven-3.8.2-bin.zip
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wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

‎README.md‎

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# Spring cloud stream + RabbitMQ + Protobuf
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This repository contains RabbitMQ Protobuf starters with its usage
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samples for `spring-rabbit` and
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`spring-cloud-starter-stream-rabbit` modules
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## Quickstart
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```bash
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git clone --depth=0 https://github.com/daggerok/spring-cloud-stream-protobuf-rabbitmq.git my-app && cd $_
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```
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```bash
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./mvnw -f rabbitmq docker:start
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./mvnw clean test
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./mvnw -f rabbitmq docker:stop docker:remove
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```
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## Integration testing
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```bash
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rm -rf ~/.m2/repository/com/github/daggerok
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./mvnw -f rabbitmq docker:start
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./mvnw clean install -DskipTests
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./mvnw -f consumer spring-boot:run # to create durable, then CTRL+C
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./mvnw -f producer spring-boot:run # then in a separate terminal:
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http :8080 message="Hello, World" # and press CTRL+C for producer
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./mvnw -f consumer spring-boot:run # check message and press CTRL+C
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./mvnw -f rabbitmq docker:stop docker:remove
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```
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<!--
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# Getting Started
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### Reference Documentation
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For further reference, please consider the following sections:
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* [Official Apache Maven documentation](https://maven.apache.org/guides/index.html)
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* [Spring Boot Maven Plugin Reference Guide](https://docs.spring.io/spring-boot/docs/2.5.5/maven-plugin/reference/html/)
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* [Create an OCI image](https://docs.spring.io/spring-boot/docs/2.5.5/maven-plugin/reference/html/#build-image)
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* [Spring Web](https://docs.spring.io/spring-boot/docs/2.5.5/reference/htmlsingle/#boot-features-developing-web-applications)
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### Guides
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The following guides illustrate how to use some features concretely:
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* [Building a RESTful Web Service](https://spring.io/guides/gs/rest-service/)
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* [Serving Web Content with Spring MVC](https://spring.io/guides/gs/serving-web-content/)
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* [Building REST services with Spring](https://spring.io/guides/tutorials/bookmarks/)
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-->

‎api/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<groupId>com.github.daggerok.protorabbit</groupId>
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<artifactId>spring-cloud-stream-protobuf-rabbitmq</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<packaging>jar</packaging>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>api</artifactId>
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<name>${project.parent.artifactId}:${project.artifactId}</name>
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<description>Spring Cloud Stream Protobuf RabbitMQ api</description>
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<dependencies>
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<dependency>
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<groupId>com.google.protobuf</groupId>
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<artifactId>protobuf-java</artifactId>
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<version>${protobuf-java.version}</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<!-- cleanup src/main/gen on maven clean goal -->
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<plugin>
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<artifactId>maven-clean-plugin</artifactId>
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</plugin>
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<!-- add src/main/gen as an additional java maven sources folder -->
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>build-helper-maven-plugin</artifactId>
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</plugin>
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<!-- src/main/proto/**/*.proto -> src/main/gen/**/*.java -->
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<plugin>
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<groupId>com.github.os72</groupId>
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<artifactId>protoc-jar-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎api/src/main/proto/api.proto‎

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syntax = "proto2";
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package com.github.daggerok.protorabbit;
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option java_package = "com.github.daggerok.protorabbit";
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option java_outer_classname = "ApiProtos";
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message Greeting {
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optional string message = 1;
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}

‎consumer/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<groupId>com.github.daggerok.protorabbit</groupId>
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<artifactId>spring-cloud-stream-protobuf-rabbitmq</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<packaging>jar</packaging>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>consumer</artifactId>
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<name>${project.parent.artifactId}:${project.artifactId}</name>
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<description>Spring Cloud Stream Protobuf RabbitMQ consumer app</description>
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<dependencies>
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<dependency>
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<groupId>com.github.daggerok.protorabbit</groupId>
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<artifactId>spring-cloud-stream-rabbit-protobuf-starter</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<!---->
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<dependency>
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<groupId>com.github.daggerok.protorabbit</groupId>
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<artifactId>api</artifactId>
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<version>${project.version}</version>
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</dependency>
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<!---->
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-stream</artifactId>
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<scope>test</scope>
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<classifier>test-binder</classifier>
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<type>test-jar</type>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎consumer/src/main/kotlin/com/github/daggerok/spring_cloud_stream_rabbitmq_protobuf/ConsumerApplication.kt‎

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package com.github.daggerok.spring_cloud_stream_rabbitmq_protobuf
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import com.github.daggerok.protorabbit.ApiProtos.Greeting
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import java.util.function.Consumer
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import org.apache.logging.log4j.kotlin.logger
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import org.springframework.boot.autoconfigure.SpringBootApplication
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import org.springframework.boot.runApplication
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import org.springframework.context.annotation.Bean
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import org.springframework.context.annotation.Configuration
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@Configuration
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class ConsumerConfig {
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@Bean
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fun consumingFunction() = Consumer<Greeting> {
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log.info { "Consuming: $it" }
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}
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companion object {
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val log = logger()
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}
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}
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@SpringBootApplication
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class ConsumerApplication
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fun main(args: Array<String>) {
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runApplication<ConsumerApplication>(*args)
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}

‎consumer/src/main/resources/application.yaml‎

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spring:
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application:
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name: consumer
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output:
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ansi:
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enabled: always
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rabbitmq:
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host: 127.0.0.1
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port: 5672
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virtual-host: /
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username: guest
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password: guest
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cloud:
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function:
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definition: consumingFunction
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stream:
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bindings:
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consumingFunction-in-0:
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destination: myDestination
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group: consumingFunctionGroup@${spring.application.name}
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content-type: application/x-protobuf
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default-binder: rabbit
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rabbit:
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bindings:
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consumingFunction-in-0:
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consumer:
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durableSubscription: true
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missingQueuesFatal: true
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maxConcurrency: 1
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batchSize: 1
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prefetch: 1
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server:
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port: 0

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