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Merge feat/http-to-mcp: to_mcp gateway projection (4-tool gateway, rmcp StreamableHttpService)

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Implements src/adapters/to_mcp.rs: ToMcpGateway rmcp ServerHandler with 4 fixed
gateway tools (search/schema/call/batch). search dispatches services/list (ACL-
filtered, excludes Subscriptions), schema dispatches services/schema, call/batch
dispatch via GatewayDispatch::invoke with ResponseEnvelope→CallToolResult mapping.
Bearer auth via shared middleware around nest_service. Identity survives rmcp
framing (research §6 #2 confirmed). Feature-gated behind mcp; stdio NOT built
(ADR-037). Pure projection. 16 unit tests.

# Conflicts:
#	crates/alknet-http/src/server/adapter.rs
This commit is contained in:
glm-5.2
2026-07-01 19:24:33 +00:00
parent 974fcde923 64696fec97
commit b127699aad
3 changed files with 873 additions and 3 deletions
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25
crates/alknet-http/src/server/adapter.rs
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@@ -17,7 +17,7 @@ use async_trait::async_trait;
use axum::http::StatusCode;
use axum::middleware::from_fn_with_state;
use axum::response::IntoResponse;
use axum::routing::{get, post};
use axum::routing::get;
use axum::Router;
use hyper_util::rt::{TokioExecutor, TokioIo};
use hyper_util::server::conn::auto::Builder as HyperBuilder;
@@ -35,6 +35,10 @@ use super::gateway_routes;
use super::healthz::healthz;
use crate::websocket::upgrade::ws_upgrade_handler;
use crate::websocket::upgrade::WS_UPGRADE_PATH;
#[cfg(feature = "mcp")]
use crate::adapters::to_mcp_service;
#[cfg(feature = "mcp")]
use crate::gateway::GatewayDispatch;
const ALPN_HTTP1: &[u8] = b"http/1.1";
const ALPN_H2: &[u8] = b"h2";
@@ -150,14 +154,28 @@ impl HttpAdapter {
fn build_router(state: RouterState, extra_routes: Option<Router>) -> Router {
let auth_state = Arc::clone(&state.identity_provider);
#[cfg(feature = "mcp")]
let mcp_router: Router<RouterState> = {
let dispatch = Arc::new(GatewayDispatch::new(
Arc::clone(&state.registry),
Arc::clone(&state.identity_provider),
));
Router::new()
.nest_service("/mcp", to_mcp_service(dispatch))
.layer(from_fn_with_state(auth_state.clone(), bearer_auth_middleware))
};
#[cfg(not(feature = "mcp"))]
let mcp_router: Router<RouterState> = Router::new();
let default: Router<RouterState> = Router::new()
.merge(gateway_routes::gateway_router())
.route("/openapi.json", get(not_implemented))
.route("/mcp", post(not_implemented))
.route(WS_UPGRADE_PATH, get(ws_upgrade_handler))
.route_layer(from_fn_with_state(auth_state.clone(), bearer_auth_middleware))
.route("/healthz", get(healthz))
.fallback(decoy_fallback);
.fallback(decoy_fallback)
.merge(mcp_router);
let with_extras = match extra_routes {
Some(extra) => {
@@ -269,6 +287,7 @@ impl AsyncWrite for QuicStream {
#[cfg(test)]
mod tests {
use super::*;
use axum::routing::post;
use tokio::io::{duplex, AsyncReadExt, AsyncWriteExt};
struct NoopProvider;