TaskExecutor is a .NET library designed for efficient and controlled task execution. It supports concurrency management, task queuing, error handling, and graceful shutdown, making it ideal for applications requiring robust asynchronous task processing.
TaskExecutor is a .NET 8.0 library that provides a concurrency-controlled task execution framework. It allows you to enqueue tasks and execute them with a specified level of concurrency.
This library implements the Active Object design pattern, which decouples method execution from method invocation to enhance concurrency and simplify synchronized access to shared resources.
Features
Limited Concurrent Tasks: Restrict the number of tasks running simultaneously.
Automatic Task Execution: Automatically start a new task as soon as one completes.
Concurrency Control: Dynamically adjust the number of concurrent tasks.
Task Queue: Enqueue tasks with unique IDs and execute them asynchronously.
Error Handling: Capture and handle task-specific errors via an event.
Graceful Shutdown: Stop the executor and wait for running tasks to complete.
Getting Started
Prerequisites
.NET 8.0 SDK
Installation via NuGet
You can install the TaskExecutor library via NuGet Package Manager:
dotnet add package task-executor
Or add the following to your .csproj file:
<PackageReference Include="task-executor" Version="*" />
Replace * with the desired version.
Using the Library
To use the TaskExecutor library in your project:
Add a reference to the TaskExecutor project or include the compiled DLL in your application.
Create an instance of the TaskExecutor class and configure it as needed.
Example Test Application
A test application is included in the repository to demonstrate how to use the TaskExecutor library. The test application is located in the TaskExecutorApp project.
Running the Test Application
Open a terminal in the project directory.
Build the solution: dotnet build
Run the test application: dotnet run --project TaskExecutorApp
Example Code
The Program.cs file in the TaskExecutorApp project demonstrates how to use the TaskExecutor library:
var cts = new CancellationTokenSource();
using var executor = new TaskExecutor.TaskExecutor(3, cts.Token);
executor.OnTaskError += (id, ex) => Console.WriteLine($"Task {id} error: {ex.Message}");
for (int i = 0; i < 20; i++)
{
int id = i;
executor.EnqueueTask(id, async () =>
{
Console.WriteLine($"Task {id} started");
await Task.Delay(Random.Shared.Next(2000, 5000));
Console.WriteLine($"Task {id} finished");
});
}
await Task.Delay(1000);
while (executor.HasRunningTasks)
{
await Task.Delay(1000);
}
await executor.StopAsync();
Project Structure
TaskExecutor/: Contains the TaskExecutor library source code.
TaskExecutor.cs: Core implementation of the TaskExecutor class.
TaskForExecute.cs: Represents a task with an ID and a function to execute.
TaskExecutorApp/: Test application demonstrating the usage of the TaskExecutor library.
Program.cs: Example usage of the TaskExecutor.
TaskExecutor.sln: Solution file for building the library and test application.
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