caca2ae61d* Overhaul tool handling
- Renames [McpTool{Type}] to [McpServerTool{Type}], in order to distinguish representations of tools on the server from tools on the client.
- Enables [McpServerTool] methods to have arguments injected from DI, as well as a specific set of types from the implementation directly, like IMcpServer.
- Renames WithTools to WithToolsFromAssembly.
- All of the WithToolsXx methods now publish each individual McpServerTool into DI; other code can do so as well. The options setup code gathers all of the tools from DI and combines them into a collection which is then stored in McpServerOptions and used to construct the server.
- The server tools specified via DI as well as manually-provided handlers, using CallToolHandler as a fallback in case the requested tool doesn't exist in the tools collection, and ListToolsHandler augments the information for whatever tools exist.
- The tools are stored in McpServerOptions in a new McpServerToolCollection type, which is a thread-safe container that exposes add/removal notification. Adding/removing tools triggers a change notification that in turn sends a notification to the client about a tools update.
- The ServerOptions are exposed from the server instance.
- Removed cursor-based APIs from McpClientExtensions.
- Changed McpClientExtensions APIs to return `Task<IList<...>` rather than `IAsyncEnumerable<...>`.
I'm sure this will need to evolve further before we're "done", but it's a significant improvement from where we are now. One area I'm not super happy with is the notifying collection; that might work ok for a stdio server, where you can grab the created collection from the server's options and mutate it, but I don't know how well that's going to work for sse servers.
* Make McpServerTool{Collection} extensible
* Fix README.md example
* Add notifications test
* Address feedback
37 lines
No EOL
1 KiB
C#
37 lines
No EOL
1 KiB
C#
using ModelContextProtocol;
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using Microsoft.Extensions.Hosting;
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using Serilog;
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Log.Logger = new LoggerConfiguration()
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.MinimumLevel.Verbose() // Capture all log levels
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.WriteTo.File(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "logs", "TestServer_.log"),
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rollingInterval: RollingInterval.Day,
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outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj}{NewLine}{Exception}")
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.WriteTo.Debug()
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.WriteTo.Console(standardErrorFromLevel: Serilog.Events.LogEventLevel.Verbose)
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.CreateLogger();
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try
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{
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Log.Information("Starting server...");
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var builder = Host.CreateApplicationBuilder(args);
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builder.Services.AddSerilog();
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builder.Services.AddMcpServer()
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.WithStdioServerTransport()
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.WithToolsFromAssembly();
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var app = builder.Build();
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await app.RunAsync();
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return 0;
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}
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catch (Exception ex)
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{
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Log.Fatal(ex, "Host terminated unexpectedly");
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return 1;
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}
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finally
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{
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await Log.CloseAndFlushAsync();
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} |