First pass at producer

.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+**/Properties/launchSettings.json
+
+# VS Code
+.vscode/
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding add-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# Visual Studio code coverage results
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+
+# NCrunch
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+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
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+AutoTest.Net/
+
+# Web workbench (sass)
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+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# TODO: Comment the next line if you want to checkin your web deploy settings
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
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+
+# Microsoft Azure Emulator
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+# Windows Store app package directories and files
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+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
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+
+# SQL Server files
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+# Business Intelligence projects
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+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
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+# Typescript v1 declaration files
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+# Visual Studio 6 build log
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+# Visual Studio 6 workspace options file
+*.opt
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+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
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+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# CodeRush
+.cr/
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+data
+
+init-mongo.js

automated-testing-demo.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "producer", "producer\producer.csproj", "{07F2A1EB-D35E-4B80-B913-CF7D1FE0594E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "consumer", "consumer\consumer.csproj", "{1F8DAF6D-67B2-43C4-ACFD-38B8541722C3}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{07F2A1EB-D35E-4B80-B913-CF7D1FE0594E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{07F2A1EB-D35E-4B80-B913-CF7D1FE0594E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{07F2A1EB-D35E-4B80-B913-CF7D1FE0594E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{07F2A1EB-D35E-4B80-B913-CF7D1FE0594E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1F8DAF6D-67B2-43C4-ACFD-38B8541722C3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1F8DAF6D-67B2-43C4-ACFD-38B8541722C3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1F8DAF6D-67B2-43C4-ACFD-38B8541722C3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1F8DAF6D-67B2-43C4-ACFD-38B8541722C3}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

consumer/Program.cs

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+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

consumer/consumer.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Confluent.Kafka" Version="2.4.0" />
+    <PackageReference Include="MongoDB.Driver" Version="2.26.0" />
+  </ItemGroup>
+
+</Project>

docker-compose.yml

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+version: "3.1"
+
+services:
+  mongo:
+    image: mongo
+    restart: always
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: mongo
+      MONGO_INITDB_ROOT_PASSWORD: mongo
+      MONGO_INITDB_DATABASE: mongo
+    ports:
+      - 27017:27017
+    volumes:
+      - ./init-mongo.js:/docker-entrypoint-initdb.d/init-mongo.js:ro
+      - ./data:/data/db
+  zookeeper:
+    image: confluentinc/cp-zookeeper:7.4.4
+    environment:
+      ZOOKEEPER_CLIENT_PORT: 2181
+      ZOOKEEPER_TICK_TIME: 2000
+    ports:
+      - 22181:2181
+  
+  kafka:
+    image: confluentinc/cp-kafka:7.4.4
+    depends_on:
+      - zookeeper
+    ports:
+      - 29092:29092
+    environment:
+      KAFKA_BROKER_ID: 1
+      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
+      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,PLAINTEXT_HOST://localhost:29092
+      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
+      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
+      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1

producer/Model/DataModel.cs

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+namespace Model
+{
+    public class DataModel 
+    {
+        public DataModel(string id)
+        {
+            this.id = id;
+        }
+
+        public string id { get; set; }
+
+        public string? name { get; set; }
+
+        public string? description { get; set; }
+
+        public string? notes { get; set; }
+    }
+}

producer/Producer.cs

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+using System;
+using System.Threading.Tasks;
+using Confluent.Kafka;
+using Model;
+
+class Producer
+{
+    public static async Task Main (string[] args)
+    {
+        var config = new ProducerConfig { BootstrapServers = "localhost:9092" };
+
+        using (var producerBuilder = new ProducerBuilder<string, DataModel>(config).Build())
+        {
+            try
+            {
+                var msg = new Message<string, DataModel>
+                {
+                    Key = System.Guid.NewGuid().ToString(),
+                    Value = new DataModel(System.Guid.NewGuid().ToString())
+                    {
+                        name = "Name",
+                        description = "Description",
+                        notes = "This is a test object"
+                    }
+                };
+
+                var dr = await producerBuilder.ProduceAsync("test-topic", msg);
+                Console.WriteLine($"Delivered '{dr.Value}' to '{dr.TopicPartitionOffset}'");
+            }
+            catch (ProduceException<string, DataModel> e)
+            {
+                Console.WriteLine($"Delivery failed: {e.Error.Reason}");
+            }
+        }
+        
+    }
+}

producer/producer.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Confluent.Kafka" Version="2.4.0" />
+  </ItemGroup>
+
+</Project>