csharp-sdk/src/ModelContextProtocol/Configuration/McpServerOptionsSetup.cs
Stephen Toub 8d4f51da50
Fix McpServerResource registration (#411)
- Add missing filling of ResourceCollection in McpServerOptionsSetup
- Remove AIFunctionMcpServerXx.ToString overrides; for resources, it was changing behavior undesirably, and for the others it was duplicate code.
- Fix notification method used for resource list changes.
- Fix type in WithResources parameter name.
2025-05-14 09:08:59 -04:00

83 lines
3.6 KiB
C#

using ModelContextProtocol.Server;
using Microsoft.Extensions.Options;
using ModelContextProtocol.Utils;
namespace Microsoft.Extensions.DependencyInjection;
/// <summary>
/// Configures the McpServerOptions using addition services from DI.
/// </summary>
/// <param name="serverHandlers">The server handlers configuration options.</param>
/// <param name="serverTools">Tools individually registered.</param>
/// <param name="serverPrompts">Prompts individually registered.</param>
/// <param name="serverResources">Resources individually registered.</param>
internal sealed class McpServerOptionsSetup(
IOptions<McpServerHandlers> serverHandlers,
IEnumerable<McpServerTool> serverTools,
IEnumerable<McpServerPrompt> serverPrompts,
IEnumerable<McpServerResource> serverResources) : IConfigureOptions<McpServerOptions>
{
/// <summary>
/// Configures the given McpServerOptions instance by setting server information
/// and applying custom server handlers and tools.
/// </summary>
/// <param name="options">The options instance to be configured.</param>
public void Configure(McpServerOptions options)
{
Throw.IfNull(options);
// Collect all of the provided tools into a tools collection. If the options already has
// a collection, add to it, otherwise create a new one. We want to maintain the identity
// of an existing collection in case someone has provided their own derived type, wants
// change notifications, etc.
McpServerPrimitiveCollection<McpServerTool> toolCollection = options.Capabilities?.Tools?.ToolCollection ?? [];
foreach (var tool in serverTools)
{
toolCollection.TryAdd(tool);
}
if (!toolCollection.IsEmpty)
{
options.Capabilities ??= new();
options.Capabilities.Tools ??= new();
options.Capabilities.Tools.ToolCollection = toolCollection;
}
// Collect all of the provided prompts into a prompts collection. If the options already has
// a collection, add to it, otherwise create a new one. We want to maintain the identity
// of an existing collection in case someone has provided their own derived type, wants
// change notifications, etc.
McpServerPrimitiveCollection<McpServerPrompt> promptCollection = options.Capabilities?.Prompts?.PromptCollection ?? [];
foreach (var prompt in serverPrompts)
{
promptCollection.TryAdd(prompt);
}
if (!promptCollection.IsEmpty)
{
options.Capabilities ??= new();
options.Capabilities.Prompts ??= new();
options.Capabilities.Prompts.PromptCollection = promptCollection;
}
// Collect all of the provided resources into a resources collection. If the options already has
// a collection, add to it, otherwise create a new one. We want to maintain the identity
// of an existing collection in case someone has provided their own derived type, wants
// change notifications, etc.
McpServerPrimitiveCollection<McpServerResource> resourceCollection = options.Capabilities?.Resources?.ResourceCollection ?? [];
foreach (var resource in serverResources)
{
resourceCollection.TryAdd(resource);
}
if (!resourceCollection.IsEmpty)
{
options.Capabilities ??= new();
options.Capabilities.Resources ??= new();
options.Capabilities.Resources.ResourceCollection = resourceCollection;
}
// Apply custom server handlers.
serverHandlers.Value.OverwriteWithSetHandlers(options);
}
}