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mcp: optimize dispatching and simplify test harness

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- Use StaticStringMap and enums for method, tool, and resource lookups.
- Implement comptime JSON minification for tool schemas.
- Refactor router and harness to use more efficient buffered polling.
- Consolidate integration tests and add synchronous unit tests.
This commit is contained in:
Adrià Arrufat
2026-03-02 20:53:14 +09:00
parent a7872aa054
commit 73565c4493
6 changed files with 357 additions and 350 deletions
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53
src/mcp/resources.zig
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@@ -64,6 +64,16 @@ const ResourceStreamingResult = struct {
};
};
const ResourceUri = enum {
@"mcp://page/html",
@"mcp://page/markdown",
};
const resource_map = std.StaticStringMap(ResourceUri).initComptime(.{
.{ "mcp://page/html", .@"mcp://page/html" },
.{ "mcp://page/markdown", .@"mcp://page/markdown" },
});
pub fn handleRead(server: *Server, arena: std.mem.Allocator, req: protocol.Request) !void {
if (req.params == null) {
return server.sendError(req.id.?, .InvalidParams, "Missing params");
@@ -73,26 +83,31 @@ pub fn handleRead(server: *Server, arena: std.mem.Allocator, req: protocol.Reque
return server.sendError(req.id.?, .InvalidParams, "Invalid params");
};
if (std.mem.eql(u8, params.uri, "mcp://page/html")) {
const result: ResourceStreamingResult = .{
.contents = &.{.{
.uri = params.uri,
.mimeType = "text/html",
.text = .{ .server = server, .format = .html },
}},
};
try server.sendResult(req.id.?, result);
} else if (std.mem.eql(u8, params.uri, "mcp://page/markdown")) {
const result: ResourceStreamingResult = .{
.contents = &.{.{
.uri = params.uri,
.mimeType = "text/markdown",
.text = .{ .server = server, .format = .markdown },
}},
};
try server.sendResult(req.id.?, result);
} else {
const uri = resource_map.get(params.uri) orelse {
return server.sendError(req.id.?, .InvalidRequest, "Resource not found");
};
switch (uri) {
.@"mcp://page/html" => {
const result: ResourceStreamingResult = .{
.contents = &.{.{
.uri = params.uri,
.mimeType = "text/html",
.text = .{ .server = server, .format = .html },
}},
};
try server.sendResult(req.id.?, result);
},
.@"mcp://page/markdown" => {
const result: ResourceStreamingResult = .{
.contents = &.{.{
.uri = params.uri,
.mimeType = "text/markdown",
.text = .{ .server = server, .format = .markdown },
}},
};
try server.sendResult(req.id.?, result);
},
}
}