Refactor to allow single consumer with multiple handlers #96
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,24 +1,24 @@ | ||
| <!-- For more info on central package management go to https://devblogs.microsoft.com/nuget/introducing-central-package-management/ --> | ||
| <Project> | ||
| <PropertyGroup> | ||
| <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <PackageVersion Include="AwesomeAssertions" Version="9.1.0" /> | ||
| <PackageVersion Include="coverlet.collector" Version="6.0.4" /> | ||
| <PackageVersion Include="FluentAssertions" Version="7.0.0" /> | ||
| <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" /> | ||
| <PackageVersion Include="NSubstitute" Version="5.3.0" /> | ||
| <PackageVersion Include="xunit" Version="2.9.3" /> | ||
| <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.1" /> | ||
| <PackageVersion Include="Confluent.Kafka" Version="2.11.0" /> | ||
| <PackageVersion Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.3.0" /> | ||
| <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="4.10.0" /> | ||
| <PackageVersion Include="Microsoft.Extensions.Hosting" Version="9.0.7" /> | ||
| <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.7" /> | ||
| <PackageVersion Include="SonarAnalyzer.CSharp" Version="10.13.0.120203" /> | ||
| <PackageVersion Include="System.Linq.Async" Version="6.0.3" /> | ||
| <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.0.3" /> | ||
| <PackageVersion Include="RocksDB" Version="10.2.1.58549" /> | ||
| </ItemGroup> | ||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| using MinimalKafka.Aggregates; | ||
|
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| namespace Examples.Aggregate; | ||
|
|
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| /// <summary> | ||
| /// Example aggregate for testing purposes. Supports increment, decrement, and set operations on a counter. | ||
| /// </summary> | ||
| public record Test : IAggregate<Guid, Test, TestCommands> | ||
| { | ||
| /// <summary> | ||
| /// Gets the aggregate identifier. | ||
| /// </summary> | ||
| public Guid Id { get; init; } | ||
|
|
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| /// <summary> | ||
| /// Gets the aggregate version. | ||
| /// </summary> | ||
| public int Version { get; init; } | ||
|
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| /// <summary> | ||
| /// Gets the current counter value. | ||
| /// </summary> | ||
| public int Counter { get; init; } | ||
|
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| /// <summary> | ||
| /// Creates a new instance of <see cref="Test"/> aggregate from a command. | ||
| /// </summary> | ||
| /// <param name="command">The command to initialize the aggregate.</param> | ||
| /// <returns>A new <see cref="Test"/> aggregate wrapped in a <see cref="Result{Test}"/>.</returns> | ||
| public static Result<Test> Create(TestCommands command) | ||
| => new Test() { Id = command.Id, Version = 0 }; | ||
|
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| /// <summary> | ||
| /// Applies a command to the current state and returns the resulting state. | ||
| /// </summary> | ||
| /// <param name="state">The current aggregate state.</param> | ||
| /// <param name="command">The command to apply.</param> | ||
| /// <returns>The new state as a <see cref="Result{Test}"/>.</returns> | ||
| public static Result<Test> Apply(Test state, TestCommands command) | ||
| { | ||
| var result = command.CommandName switch | ||
| { | ||
| nameof(Create) => Create(command), | ||
| nameof(Increment) => state.Increment(), | ||
| nameof(Decrement) => state.Decrement(), | ||
| nameof(SetCounter) => state.SetCounter(command.SetCounter!), | ||
| _ => Result.Failed(state, "Unknown command: " + command.CommandName) | ||
| }; | ||
|
|
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| if (result.IsSuccess) | ||
| { | ||
| return result.State with { Version = state.Version + 1 }; | ||
| } | ||
|
|
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| return result; | ||
| } | ||
|
|
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| /// <summary> | ||
| /// Increments the counter by one. | ||
| /// </summary> | ||
| /// <returns>New state if successful, or failed result if out of bounds.</returns> | ||
| public Result<Test> Increment() | ||
| { | ||
| if (Counter >= 100) | ||
| { | ||
| return Result.Failed(this, "Counter cannot exceed 100."); | ||
| } | ||
|
|
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| return this with { Counter = Counter + 1 }; | ||
| } | ||
|
|
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| /// <summary> | ||
| /// Decrements the counter by one. | ||
| /// </summary> | ||
| /// <returns>New state if successful, or failed result if out of bounds.</returns> | ||
| public Result<Test> Decrement() | ||
| { | ||
| if (Counter <= 0) | ||
| { | ||
| return Result.Failed(this, "Counter cannot be less than 0."); | ||
| } | ||
|
|
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| return this with { Counter = Counter - 1 }; | ||
| } | ||
|
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| /// <summary> | ||
| /// Sets the counter to a specific value using the <see cref="SetCounter"/> command. | ||
| /// </summary> | ||
| /// <param name="cmd">The command containing the new counter value.</param> | ||
| /// <returns>New state if within bounds, or failed result otherwise.</returns> | ||
| public Result<Test> SetCounter(SetCounter cmd) | ||
| { | ||
| if (cmd.Counter < 0) | ||
| { | ||
| return Result.Failed(this, "Counter cannot be less than 0."); | ||
| } | ||
|
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| if (cmd.Counter > 100) | ||
| { | ||
| return Result.Failed(this, "Counter cannot be more than 100."); | ||
| } | ||
|
|
||
| return this with { Counter = cmd.Counter }; | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| using MinimalKafka.Aggregates; | ||
|
|
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| namespace Examples.Aggregate; | ||
|
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| public class TestCommands : IAggregateCommands<Guid> | ||
| { | ||
| public Guid Id { get; init; } = Guid.NewGuid(); | ||
| public required int Version { get; init; } | ||
| public required string CommandName { get; init; } | ||
| public SetCounter? SetCounter { get; set; } | ||
|
|
||
| } | ||
|
|
||
| public record SetCounter(int Counter); |
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