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feat: lazy load mcp server

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This commit is contained in:
dswbx
2025-09-23 13:46:39 +02:00
parent 54eee8cd34
commit 49aee37199
13 changed files with 56 additions and 32 deletions
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2
app/__test__/app/AppServer.spec.ts
View File

@@ -16,6 +16,7 @@ describe("AppServer", () => {
mcp: {
enabled: false,
path: "/api/system/mcp",
logLevel: "warning",
},
});
}
@@ -38,6 +39,7 @@ describe("AppServer", () => {
mcp: {
enabled: false,
path: "/api/system/mcp",
logLevel: "warning",
},
});
}

1
app/__test__/app/mcp/mcp.auth.test.ts
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@@ -44,6 +44,7 @@ describe("mcp auth", async () => {
},
});
await app.build();
await app.getMcpClient().ping();
server = app.mcp!;
server.setLogLevel("error");
server.onNotification((message) => {

5
app/__test__/app/mcp/mcp.base.test.ts
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@@ -34,6 +34,11 @@ describe("mcp", () => {
});
await app.build();
// expect mcp to not be loaded yet
expect(app.mcp).toBeNull();
// after first request, mcp should be loaded
await app.getMcpClient().listTools();
expect(app.mcp?.tools.length).toBeGreaterThan(0);
});
});

1
app/__test__/app/mcp/mcp.data.test.ts
View File

@@ -50,6 +50,7 @@ describe("mcp data", async () => {
},
});
await app.build();
await app.getMcpClient().ping();
server = app.mcp!;
server.setLogLevel("error");
server.onNotification((message) => {

1
app/__test__/app/mcp/mcp.media.test.ts
View File

@@ -39,6 +39,7 @@ describe("mcp media", async () => {
},
});
await app.build();
await app.getMcpClient().ping();
server = app.mcp!;
server.setLogLevel("error");
server.onNotification((message) => {

1
app/__test__/app/mcp/mcp.server.test.ts
View File

@@ -24,6 +24,7 @@ describe("mcp system", async () => {
},
});
await app.build();
await app.getMcpClient().ping();
server = app.mcp!;
});

1
app/__test__/app/mcp/mcp.system.test.ts
View File

@@ -23,6 +23,7 @@ describe("mcp system", async () => {
},
});
await app.build();
await app.getMcpClient().ping();
server = app.mcp!;
});

2
app/package.json
View File

@@ -65,7 +65,7 @@
"hono": "4.8.3",
"json-schema-library": "10.0.0-rc7",
"json-schema-to-ts": "^3.1.1",
"jsonv-ts": "0.8.2",
"jsonv-ts": "0.8.4",
"kysely": "0.27.6",
"lodash-es": "^4.17.21",
"oauth4webapi": "^2.11.1",

6
app/src/App.ts
View File

@@ -302,13 +302,13 @@ export class App<
}
getMcpClient() {
if (!this.mcp) {
const config = this.modules.get("server").config.mcp;
if (!config.enabled) {
throw new Error("MCP is not enabled");
}
const mcpPath = this.modules.get("server").config.mcp.path;
return new McpClient({
url: "http://localhost" + mcpPath,
url: "http://localhost" + config.path,
fetch: this.server.request,
});
}

2
app/src/modules/mcp/system-mcp.ts
View File

@@ -6,7 +6,7 @@ import { getVersion } from "core/env";
export function getSystemMcp(app: App) {
const middlewareServer = getMcpServer(app.server);
const appConfig = app.modules.configs();
//const appConfig = app.modules.configs();
const { version, ...appSchema } = app.getSchema();
const schema = s.strictObject(appSchema);
const result = [...schema.walk({ maxDepth: 3 })];

6
app/src/modules/server/AppServer.ts
View File

@@ -1,6 +1,6 @@
import { Exception } from "core/errors";
import { isDebug } from "core/env";
import { $console, s } from "bknd/utils";
import { $console, mcpLogLevels, s } from "bknd/utils";
import { $object } from "modules/mcp";
import { cors } from "hono/cors";
import { Module } from "modules/Module";
@@ -25,6 +25,10 @@ export const serverConfigSchema = $object(
mcp: s.strictObject({
enabled: s.boolean({ default: false }),
path: s.string({ default: "/api/system/mcp" }),
logLevel: s.string({
enum: mcpLogLevels,
default: "warning",
}),
}),
},
{

18
app/src/modules/server/SystemController.ts
View File

@@ -70,6 +70,10 @@ export class SystemController extends Controller {
this.registerMcp();
app.server.use(
mcpMiddleware({
setup: async () => {
if (!this._mcpServer) {
this._mcpServer = getSystemMcp(app);
this._mcpServer.onNotification((message) => {
if (message.method === "notification/message") {
@@ -87,16 +91,20 @@ export class SystemController extends Controller {
const level = consoleMap[message.params.level];
if (!level) return;
$console[level]("MCP notification", message.params.message ?? message.params);
$console[level](
"MCP notification",
message.params.message ?? message.params,
);
}
});
app.server.use(
mcpMiddleware({
}
return {
server: this._mcpServer,
};
},
sessionsEnabled: true,
debug: {
logLevel: "debug",
logLevel: config.mcp.logLevel as any,
explainEndpoint: true,
},
endpoint: {

6
bun.lock
View File

@@ -15,7 +15,7 @@
},
"app": {
"name": "bknd",
"version": "0.18.0-rc.4",
"version": "0.18.0-rc.6",
"bin": "./dist/cli/index.js",
"dependencies": {
"@cfworker/json-schema": "^4.1.1",
@@ -35,7 +35,7 @@
"hono": "4.8.3",
"json-schema-library": "10.0.0-rc7",
"json-schema-to-ts": "^3.1.1",
"jsonv-ts": "0.8.2",
"jsonv-ts": "0.8.4",
"kysely": "0.27.6",
"lodash-es": "^4.17.21",
"oauth4webapi": "^2.11.1",
@@ -2529,7 +2529,7 @@
"jsonpointer": ["jsonpointer@5.0.1", "", {}, "sha512-p/nXbhSEcu3pZRdkW1OfJhpsVtW1gd4Wa1fnQc9YLiTfAjn0312eMKimbdIQzuZl9aa9xUGaRlP9T/CJE/ditQ=="],
"jsonv-ts": ["jsonv-ts@0.8.2", "", { "optionalDependencies": { "hono": "*" }, "peerDependencies": { "typescript": "^5.0.0" } }, "sha512-1Z7+maCfoGGqBPu5vN8rU9gIsW7OatYmn+STBTPkybbtNqeMzAoJDDrXHjsZ89x5dPH9W+OgMpNLtN0ouwiMYg=="],
"jsonv-ts": ["jsonv-ts@0.8.4", "", { "optionalDependencies": { "hono": "*" }, "peerDependencies": { "typescript": "^5.0.0" } }, "sha512-TZOyAVGBZxHuzk09NgJCx2dbeh0XqVWVKHU1PtIuvjT9XO7zhvAD02RcVisJoUdt2rJNt3zlyeNQ2b8MMPc+ug=="],
"jsonwebtoken": ["jsonwebtoken@9.0.2", "", { "dependencies": { "jws": "^3.2.2", "lodash.includes": "^4.3.0", "lodash.isboolean": "^3.0.3", "lodash.isinteger": "^4.0.4", "lodash.isnumber": "^3.0.3", "lodash.isplainobject": "^4.0.6", "lodash.isstring": "^4.0.1", "lodash.once": "^4.0.0", "ms": "^2.1.1", "semver": "^7.5.4" } }, "sha512-PRp66vJ865SSqOlgqS8hujT5U4AOgMfhrwYIuIhfKaoSCZcirrmASQr8CX7cUg+RMih+hgznrjp99o+W4pJLHQ=="],