Orleans Graph

A library for managing and validating grain call transitions in Microsoft Orleans applications. It allows you to define allowed communication patterns between grains and enforce them at runtime.

Features

• Define allowed grain-to-grain communication patterns
• Validate grain call transitions at runtime
• Detect and prevent circular dependencies
• Support for method-level granularity
• Reentrancy control
• Client-to-grain call validation

Installation

dotnet add package ManagedCode.Orleans.Graph

Usage

Configure Silo

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrainTransition<GrainA, GrainB>()
         .Method(a => a.MethodA1(), b => b.MethodB1())
         .And()
         .AllowClientCallGrain<GrainA>();
});

Configure Client

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrainTransition<GrainA, GrainB>()
         .AllMethods()
         .And()
         .AllowClientCallGrain<GrainA>();
});

Example

Here are more examples of how to configure the graph in your Orleans application:

Example 1: Simple Grain-to-Grain Transition

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrainTransition<GrainA, GrainB>()
         .AllMethods();
});

Example 2: Method-Level Transition

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrainTransition<GrainA, GrainB>()
         .Method(a => a.MethodA1(), b => b.MethodB1());
});

Example 3: Allowing Reentrancy

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrainTransition<GrainA, GrainB>()
         .WithReentrancy()
         .AllMethods();
});

Example 4: Multiple Transitions

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrainTransition<GrainA, GrainB>()
         .AllMethods()
         .And()
         .AddGrainTransition<GrainB, GrainC>()
         .AllMethods();
});

Example 5: Client-to-Grain Call Validation

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AllowClientCallGrain<GrainA>()
         .And()
         .AddGrainTransition<GrainA, GrainB>()
         .AllMethods();
});

Example 6: Detecting and Preventing Circular Dependencies

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrainTransition<GrainA, GrainB>()
         .AllMethods()
         .And()
         .AddGrainTransition<GrainB, GrainC>()
         .AllMethods()
         .And()
         .AddGrainTransition<GrainC, GrainA>()
         .AllMethods();
});

Example 7: Simple Self-Call

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrain<IGrainA>()
         .WithReentrancy();
});

Example 8: Self-Call with All Methods

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrain<IGrainA>()
         .AllMethods()
         .WithReentrancy();
});

Example 9: Self-Call with Specific Method and Parameters

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrain<IGrainA>()
         .Method(a => a.MethodA1(GraphParam.Any<int>()))
         .WithReentrancy();
});

Example 10: Self-Call with Client Call Validation

builder.AddOrleansGraph()
       .CreateGraph(graph =>
{
    graph.AddGrain<IGrainA>()
         .AllowClientCallGrain()
         .WithReentrancy();
});

These examples demonstrate various ways to configure a grain to call itself, including method-level granularity, reentrancy, and client call validation.

License

This project is licensed under the MIT License.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Support

If you have any questions or run into issues, please open an issue on the GitHub repository.

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Created and maintained by ManagedCode