17649929543

Committed 11 Sep 2025 03:45PM UTC coverage: 81.448% (+0.1%) from 81.306%

Build # 17649929543

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web-flow

Commit Message

fix: add argument validation - MCP-188 (#542)

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143 of 143 new or added lines in 13 files covered. (100.0%)

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/src/common/connectionManager.ts

import { EventEmitter } from "events";
import type { MongoClientOptions } from "mongodb";
import { ConnectionString } from "mongodb-connection-string-url";
import { NodeDriverServiceProvider } from "@mongosh/service-provider-node-driver";
import { type ConnectionInfo, generateConnectionInfoFromCliArgs } from "@mongosh/arg-parser";
import type { DeviceId } from "../helpers/deviceId.js";
import { defaultDriverOptions, setupDriverConfig, type DriverOptions, type UserConfig } from "./config.js";
import { MongoDBError, ErrorCodes } from "./errors.js";
import { type LoggerBase, LogId } from "./logger.js";
import { packageInfo } from "./packageInfo.js";
import { type AppNameComponents, setAppNameParamIfMissing } from "../helpers/connectionOptions.js";

export interface AtlasClusterConnectionInfo {
    username: string;
    projectId: string;
    clusterName: string;
    expiryDate: Date;
}

export interface ConnectionSettings {
    connectionString: string;
    atlas?: AtlasClusterConnectionInfo;
}

type ConnectionTag = "connected" | "connecting" | "disconnected" | "errored";
type OIDCConnectionAuthType = "oidc-auth-flow" | "oidc-device-flow";
export type ConnectionStringAuthType = "scram" | "ldap" | "kerberos" | OIDCConnectionAuthType | "x.509";

export interface ConnectionState {
    tag: ConnectionTag;
    connectionStringAuthType?: ConnectionStringAuthType;
    connectedAtlasCluster?: AtlasClusterConnectionInfo;
}

export interface ConnectionStateConnected extends ConnectionState {
    tag: "connected";
    serviceProvider: NodeDriverServiceProvider;
}

export interface ConnectionStateConnecting extends ConnectionState {
    tag: "connecting";
    serviceProvider: NodeDriverServiceProvider;
    oidcConnectionType: OIDCConnectionAuthType;
    oidcLoginUrl?: string;
    oidcUserCode?: string;
}

export interface ConnectionStateDisconnected extends ConnectionState {
    tag: "disconnected";
}

export interface ConnectionStateErrored extends ConnectionState {
    tag: "errored";
    errorReason: string;
}

export type AnyConnectionState =
    | ConnectionStateConnected
    | ConnectionStateConnecting
    | ConnectionStateDisconnected
    | ConnectionStateErrored;

export interface ConnectionManagerEvents {
    "connection-request": [AnyConnectionState];
    "connection-success": [ConnectionStateConnected];
    "connection-time-out": [ConnectionStateErrored];
    "connection-close": [ConnectionStateDisconnected];
    "connection-error": [ConnectionStateErrored];
}

/**
 * For a few tests, we need the changeState method to force a connection state
 * which is we have this type to typecast the actual ConnectionManager with
 * public changeState (only to make TS happy).
 */
export type TestConnectionManager = ConnectionManager & {
    changeState<Event extends keyof ConnectionManagerEvents, State extends ConnectionManagerEvents[Event][0]>(
        event: Event,
        newState: State
    ): State;
};

export abstract class ConnectionManager {
    protected clientName: string;
    protected readonly _events: EventEmitter<ConnectionManagerEvents>;
    readonly events: Pick<EventEmitter<ConnectionManagerEvents>, "on" | "off" | "once">;
    private state: AnyConnectionState;

    constructor() {
        this.clientName = "unknown";
        this.events = this._events = new EventEmitter<ConnectionManagerEvents>();
        this.state = { tag: "disconnected" };
    }

    get currentConnectionState(): AnyConnectionState {
        return this.state;
    }

    protected changeState<Event extends keyof ConnectionManagerEvents, State extends ConnectionManagerEvents[Event][0]>(
        event: Event,
        newState: State
    ): State {
        this.state = newState;
        // TypeScript doesn't seem to be happy with the spread operator and generics
        // eslint-disable-next-line
        this._events.emit(event, ...([newState] as any));
        return newState;
    }

    setClientName(clientName: string): void {
        this.clientName = clientName;
    }

    abstract connect(settings: ConnectionSettings): Promise<AnyConnectionState>;

    abstract disconnect(): Promise<ConnectionStateDisconnected | ConnectionStateErrored>;
}

export class MCPConnectionManager extends ConnectionManager {
    private deviceId: DeviceId;
    private bus: EventEmitter;

    constructor(
        private userConfig: UserConfig,
        private driverOptions: DriverOptions,
        private logger: LoggerBase,
        deviceId: DeviceId,
        bus?: EventEmitter
    ) {
        super();
        this.bus = bus ?? new EventEmitter();
        this.bus.on("mongodb-oidc-plugin:auth-failed", this.onOidcAuthFailed.bind(this));
        this.bus.on("mongodb-oidc-plugin:auth-succeeded", this.onOidcAuthSucceeded.bind(this));
        this.deviceId = deviceId;
    }

    async connect(settings: ConnectionSettings): Promise<AnyConnectionState> {
        this._events.emit("connection-request", this.currentConnectionState);

        if (this.currentConnectionState.tag === "connected" || this.currentConnectionState.tag === "connecting") {
            await this.disconnect();
        }

        let serviceProvider: NodeDriverServiceProvider;
        let connectionInfo: ConnectionInfo;
        let connectionStringAuthType: ConnectionStringAuthType = "scram";

        try {
            settings = { ...settings };
            const appNameComponents: AppNameComponents = {
                appName: `${packageInfo.mcpServerName} ${packageInfo.version}`,
                deviceId: this.deviceId.get(),
                clientName: this.clientName,
            };

            settings.connectionString = await setAppNameParamIfMissing({
                connectionString: settings.connectionString,
                components: appNameComponents,
            });

            connectionInfo = generateConnectionInfoFromCliArgs({
                ...this.userConfig,
                ...this.driverOptions,
                connectionSpecifier: settings.connectionString,
            });

            if (connectionInfo.driverOptions.oidc) {
                connectionInfo.driverOptions.oidc.allowedFlows ??= ["auth-code"];
                connectionInfo.driverOptions.oidc.notifyDeviceFlow ??= this.onOidcNotifyDeviceFlow.bind(this);
            }

            connectionInfo.driverOptions.proxy ??= { useEnvironmentVariableProxies: true };
            connectionInfo.driverOptions.applyProxyToOIDC ??= true;

            connectionStringAuthType = MCPConnectionManager.inferConnectionTypeFromSettings(
                this.userConfig,
                connectionInfo
            );

            serviceProvider = await NodeDriverServiceProvider.connect(
                connectionInfo.connectionString,
                {
                    productDocsLink: "https://github.com/mongodb-js/mongodb-mcp-server/",
                    productName: "MongoDB MCP",
                    ...connectionInfo.driverOptions,
                },
                undefined,
                this.bus
            );
        } catch (error: unknown) {
            const errorReason = error instanceof Error ? error.message : `${error as string}`;
            this.changeState("connection-error", {
                tag: "errored",
                errorReason,
                connectionStringAuthType,
                connectedAtlasCluster: settings.atlas,
            });
            throw new MongoDBError(ErrorCodes.MisconfiguredConnectionString, errorReason);
        }

        try {
            if (connectionStringAuthType.startsWith("oidc")) {
                void this.pingAndForget(serviceProvider);

                return this.changeState("connection-request", {
                    tag: "connecting",
                    connectedAtlasCluster: settings.atlas,
                    serviceProvider,
                    connectionStringAuthType,
                    oidcConnectionType: connectionStringAuthType as OIDCConnectionAuthType,
                });
            }

            await serviceProvider?.runCommand?.("admin", { hello: 1 });

            return this.changeState("connection-success", {
                tag: "connected",
                connectedAtlasCluster: settings.atlas,
                serviceProvider,
                connectionStringAuthType,
            });
        } catch (error: unknown) {
            const errorReason = error instanceof Error ? error.message : `${error as string}`;
            this.changeState("connection-error", {
                tag: "errored",
                errorReason,
                connectionStringAuthType,
                connectedAtlasCluster: settings.atlas,
            });
            throw new MongoDBError(ErrorCodes.NotConnectedToMongoDB, errorReason);
        }
    }

    async disconnect(): Promise<ConnectionStateDisconnected | ConnectionStateErrored> {
        if (this.currentConnectionState.tag === "disconnected" || this.currentConnectionState.tag === "errored") {
            return this.currentConnectionState;
        }

        if (this.currentConnectionState.tag === "connected" || this.currentConnectionState.tag === "connecting") {
            try {
                await this.currentConnectionState.serviceProvider?.close(true);
            } finally {
                this.changeState("connection-close", {
                    tag: "disconnected",
                });
            }
        }

        return { tag: "disconnected" };
    }

    private onOidcAuthFailed(error: unknown): void {
        if (
            this.currentConnectionState.tag === "connecting" &&
            this.currentConnectionState.connectionStringAuthType?.startsWith("oidc")
        ) {
            void this.disconnectOnOidcError(error);
        }
    }

    private onOidcAuthSucceeded(): void {
        if (
            this.currentConnectionState.tag === "connecting" &&
            this.currentConnectionState.connectionStringAuthType?.startsWith("oidc")
        ) {
            this.changeState("connection-success", { ...this.currentConnectionState, tag: "connected" });
        }

        this.logger.info({
            id: LogId.oidcFlow,
            context: "mongodb-oidc-plugin:auth-succeeded",
            message: "Authenticated successfully.",
        });
    }

    private onOidcNotifyDeviceFlow(flowInfo: { verificationUrl: string; userCode: string }): void {
        if (
            this.currentConnectionState.tag === "connecting" &&
            this.currentConnectionState.connectionStringAuthType?.startsWith("oidc")
        ) {
            this.changeState("connection-request", {
                ...this.currentConnectionState,
                tag: "connecting",
                connectionStringAuthType: "oidc-device-flow",
                oidcLoginUrl: flowInfo.verificationUrl,
                oidcUserCode: flowInfo.userCode,
            });
        }

        this.logger.info({
            id: LogId.oidcFlow,
            context: "mongodb-oidc-plugin:notify-device-flow",
            message: "OIDC Flow changed automatically to device flow.",
        });
    }

    static inferConnectionTypeFromSettings(
        config: UserConfig,
        settings: { connectionString: string }
    ): ConnectionStringAuthType {
        const connString = new ConnectionString(settings.connectionString);
        const searchParams = connString.typedSearchParams<MongoClientOptions>();

        switch (searchParams.get("authMechanism")) {
            case "MONGODB-OIDC": {
                if (config.transport === "stdio" && config.browser) {
                    return "oidc-auth-flow";
                }

                if (config.transport === "http" && config.httpHost === "127.0.0.1" && config.browser) {
                    return "oidc-auth-flow";
                }

                return "oidc-device-flow";
            }
            case "MONGODB-X509":
                return "x.509";
            case "GSSAPI":
                return "kerberos";
            case "PLAIN":
                if (searchParams.get("authSource") === "$external") {
                    return "ldap";
                }
                return "scram";
            // default should catch also null, but eslint complains
            // about it.
            case null:
            default:
                return "scram";
        }
    }

    private async pingAndForget(serviceProvider: NodeDriverServiceProvider): Promise<void> {
        try {
            await serviceProvider?.runCommand?.("admin", { hello: 1 });
        } catch (error: unknown) {
            this.logger.warning({
                id: LogId.oidcFlow,
                context: "pingAndForget",
                message: String(error),
            });
        }
    }

    private async disconnectOnOidcError(error: unknown): Promise<void> {
        try {
            await this.disconnect();
        } catch (error: unknown) {
            this.logger.warning({
                id: LogId.oidcFlow,
                context: "disconnectOnOidcError",
                message: String(error),
            });
        } finally {
            this.changeState("connection-error", { tag: "errored", errorReason: String(error) });
        }
    }
}

/**
 * Consumers of MCP server library have option to bring their own connection
 * management if they need to. To support that, we enable injecting connection
 * manager implementation through a factory function.
 */
export type ConnectionManagerFactoryFn = (createParams: {
    logger: LoggerBase;
    deviceId: DeviceId;
    userConfig: UserConfig;
}) => Promise<ConnectionManager>;

export const createMCPConnectionManager: ConnectionManagerFactoryFn = ({ logger, deviceId, userConfig }) => {
    const driverOptions = setupDriverConfig({
        config: userConfig,
        defaults: defaultDriverOptions,
    });

    return Promise.resolve(new MCPConnectionManager(userConfig, driverOptions, logger, deviceId));
};

1	import { EventEmitter } from "events";	2✔
2	import type { MongoClientOptions } from "mongodb";
3	import { ConnectionString } from "mongodb-connection-string-url";	2✔
4	import { NodeDriverServiceProvider } from "@mongosh/service-provider-node-driver";	2✔
5	import { type ConnectionInfo, generateConnectionInfoFromCliArgs } from "@mongosh/arg-parser";	2✔
6	import type { DeviceId } from "../helpers/deviceId.js";
7	import { defaultDriverOptions, setupDriverConfig, type DriverOptions, type UserConfig } from "./config.js";	2✔
8	import { MongoDBError, ErrorCodes } from "./errors.js";	2✔
9	import { type LoggerBase, LogId } from "./logger.js";	2✔
10	import { packageInfo } from "./packageInfo.js";	2✔
11	import { type AppNameComponents, setAppNameParamIfMissing } from "../helpers/connectionOptions.js";	2✔
12
13	export interface AtlasClusterConnectionInfo {
14	username: string;
15	projectId: string;
16	clusterName: string;
17	expiryDate: Date;
18	}
19
20	export interface ConnectionSettings {
21	connectionString: string;
22	atlas?: AtlasClusterConnectionInfo;
23	}
24
25	type ConnectionTag = "connected" \| "connecting" \| "disconnected" \| "errored";
26	type OIDCConnectionAuthType = "oidc-auth-flow" \| "oidc-device-flow";
27	export type ConnectionStringAuthType = "scram" \| "ldap" \| "kerberos" \| OIDCConnectionAuthType \| "x.509";
28
29	export interface ConnectionState {
30	tag: ConnectionTag;
31	connectionStringAuthType?: ConnectionStringAuthType;
32	connectedAtlasCluster?: AtlasClusterConnectionInfo;
33	}
34
35	export interface ConnectionStateConnected extends ConnectionState {
36	tag: "connected";
37	serviceProvider: NodeDriverServiceProvider;
38	}
39
40	export interface ConnectionStateConnecting extends ConnectionState {
41	tag: "connecting";
42	serviceProvider: NodeDriverServiceProvider;
43	oidcConnectionType: OIDCConnectionAuthType;
44	oidcLoginUrl?: string;
45	oidcUserCode?: string;
46	}
47
48	export interface ConnectionStateDisconnected extends ConnectionState {
49	tag: "disconnected";
50	}
51
52	export interface ConnectionStateErrored extends ConnectionState {
53	tag: "errored";
54	errorReason: string;
55	}
56
57	export type AnyConnectionState =
58	\| ConnectionStateConnected
59	\| ConnectionStateConnecting
60	\| ConnectionStateDisconnected
61	\| ConnectionStateErrored;
62
63	export interface ConnectionManagerEvents {
64	"connection-request": [AnyConnectionState];
65	"connection-success": [ConnectionStateConnected];
66	"connection-time-out": [ConnectionStateErrored];
67	"connection-close": [ConnectionStateDisconnected];
68	"connection-error": [ConnectionStateErrored];
69	}
70
71	/**
72	* For a few tests, we need the changeState method to force a connection state
73	* which is we have this type to typecast the actual ConnectionManager with
74	* public changeState (only to make TS happy).
75	*/
76	export type TestConnectionManager = ConnectionManager & {
77	changeState<Event extends keyof ConnectionManagerEvents, State extends ConnectionManagerEvents[Event][0]>(
78	event: Event,
79	newState: State
80	): State;
81	};
82
83	export abstract class ConnectionManager {	2✔
84	protected clientName: string;
85	protected readonly _events: EventEmitter<ConnectionManagerEvents>;
86	readonly events: Pick<EventEmitter<ConnectionManagerEvents>, "on" \| "off" \| "once">;
87	private state: AnyConnectionState;
88
89	constructor() {	2✔
90	this.clientName = "unknown";	70✔
91	this.events = this._events = new EventEmitter<ConnectionManagerEvents>();	70✔
92	this.state = { tag: "disconnected" };	70✔
93	}	70✔
94
95	get currentConnectionState(): AnyConnectionState {	2✔
96	return this.state;	4,092✔
97	}	4,092✔
98
99	protected changeState<Event extends keyof ConnectionManagerEvents, State extends ConnectionManagerEvents[Event][0]>(	2✔
100	event: Event,	470✔
101	newState: State	470✔
102	): State {	470✔
103	this.state = newState;	470✔
104	// TypeScript doesn't seem to be happy with the spread operator and generics
105	// eslint-disable-next-line
106	this._events.emit(event, ...([newState] as any));	470✔
107	return newState;	470✔
108	}	470✔
109
110	setClientName(clientName: string): void {	2✔
111	this.clientName = clientName;	62✔
112	}	62✔
113
114	abstract connect(settings: ConnectionSettings): Promise<AnyConnectionState>;
115
116	abstract disconnect(): Promise<ConnectionStateDisconnected \| ConnectionStateErrored>;
117	}	2✔
118
119	export class MCPConnectionManager extends ConnectionManager {	2✔
120	private deviceId: DeviceId;
121	private bus: EventEmitter;
122
123	constructor(	2✔
124	private userConfig: UserConfig,	70✔
125	private driverOptions: DriverOptions,	70✔
126	private logger: LoggerBase,	70✔
127	deviceId: DeviceId,	70✔
128	bus?: EventEmitter	70✔
129	) {	70✔
130	super();	70✔
131	this.bus = bus ?? new EventEmitter();	70✔
132	this.bus.on("mongodb-oidc-plugin:auth-failed", this.onOidcAuthFailed.bind(this));	70✔
133	this.bus.on("mongodb-oidc-plugin:auth-succeeded", this.onOidcAuthSucceeded.bind(this));	70✔
134	this.deviceId = deviceId;	70✔
135	}	70✔
136
137	async connect(settings: ConnectionSettings): Promise<AnyConnectionState> {	2✔
138	this._events.emit("connection-request", this.currentConnectionState);	232✔
139
140	if (this.currentConnectionState.tag === "connected" \|\| this.currentConnectionState.tag === "connecting") {	232✔
141	await this.disconnect();	13✔
142	}	13✔
143
144	let serviceProvider: NodeDriverServiceProvider;	232✔
145	let connectionInfo: ConnectionInfo;	232✔
146	let connectionStringAuthType: ConnectionStringAuthType = "scram";	232✔
147
148	try {	232✔
149	settings = { ...settings };	232✔
150	const appNameComponents: AppNameComponents = {	232✔
151	appName: `${packageInfo.mcpServerName} ${packageInfo.version}`,	232✔
152	deviceId: this.deviceId.get(),	232✔
153	clientName: this.clientName,	232✔
154	};	232✔
155
156	settings.connectionString = await setAppNameParamIfMissing({	232✔
157	connectionString: settings.connectionString,	232✔
158	components: appNameComponents,	232✔
159	});	232✔
160
161	connectionInfo = generateConnectionInfoFromCliArgs({	232✔
162	...this.userConfig,	232✔
163	...this.driverOptions,	232✔
164	connectionSpecifier: settings.connectionString,	232✔
165	});	232✔
166
167	if (connectionInfo.driverOptions.oidc) {	232!
168	connectionInfo.driverOptions.oidc.allowedFlows ??= ["auth-code"];	7✔
169	connectionInfo.driverOptions.oidc.notifyDeviceFlow ??= this.onOidcNotifyDeviceFlow.bind(this);	7✔
170	}	7✔
171
172	connectionInfo.driverOptions.proxy ??= { useEnvironmentVariableProxies: true };	232✔
173	connectionInfo.driverOptions.applyProxyToOIDC ??= true;	232✔
174
175	connectionStringAuthType = MCPConnectionManager.inferConnectionTypeFromSettings(	232✔
176	this.userConfig,	232✔
177	connectionInfo	232✔
178	);	232✔
179
180	serviceProvider = await NodeDriverServiceProvider.connect(	232✔
181	connectionInfo.connectionString,	232✔
182	{	232✔
183	productDocsLink: "https://github.com/mongodb-js/mongodb-mcp-server/",	232✔
184	productName: "MongoDB MCP",	232✔
185	...connectionInfo.driverOptions,	232✔
186	},	232✔
187	undefined,	232✔
188	this.bus	232✔
189	);	232✔
190	} catch (error: unknown) {	228!
191	const errorReason = error instanceof Error ? error.message : `${error as string}`;	12!
192	this.changeState("connection-error", {	12✔
193	tag: "errored",	12✔
194	errorReason,	12✔
195	connectionStringAuthType,	12✔
196	connectedAtlasCluster: settings.atlas,	12✔
197	});	12✔
198	throw new MongoDBError(ErrorCodes.MisconfiguredConnectionString, errorReason);	12✔
199	}	12✔
200
201	try {	220✔
202	if (connectionStringAuthType.startsWith("oidc")) {	232!
203	void this.pingAndForget(serviceProvider);	7✔
204
205	return this.changeState("connection-request", {	7✔
206	tag: "connecting",	7✔
207	connectedAtlasCluster: settings.atlas,	7✔
208	serviceProvider,	7✔
209	connectionStringAuthType,	7✔
210	oidcConnectionType: connectionStringAuthType as OIDCConnectionAuthType,	7✔
211	});	7✔
212	}	7✔
213
214	await serviceProvider?.runCommand?.("admin", { hello: 1 });	213✔
215
216	return this.changeState("connection-success", {	210✔
217	tag: "connected",	210✔
218	connectedAtlasCluster: settings.atlas,	210✔
219	serviceProvider,	210✔
220	connectionStringAuthType,	210✔
221	});	210✔
222	} catch (error: unknown) {	225!
223	const errorReason = error instanceof Error ? error.message : `${error as string}`;	3!
224	this.changeState("connection-error", {	3✔
225	tag: "errored",	3✔
226	errorReason,	3✔
227	connectionStringAuthType,	3✔
228	connectedAtlasCluster: settings.atlas,	3✔
229	});	3✔
230	throw new MongoDBError(ErrorCodes.NotConnectedToMongoDB, errorReason);	3✔
231	}	3✔
232	}	232✔
233
234	async disconnect(): Promise<ConnectionStateDisconnected \| ConnectionStateErrored> {	2✔
235	if (this.currentConnectionState.tag === "disconnected" \|\| this.currentConnectionState.tag === "errored") {	498✔
236	return this.currentConnectionState;	291✔
237	}	291✔
238
239	if (this.currentConnectionState.tag === "connected" \|\| this.currentConnectionState.tag === "connecting") {	498!
240	try {	207✔
241	await this.currentConnectionState.serviceProvider?.close(true);	207✔
242	} finally {	207✔
243	this.changeState("connection-close", {	207✔
244	tag: "disconnected",	207✔
245	});	207✔
246	}	207✔
247	}	207✔
248
249	return { tag: "disconnected" };	207✔
250	}	498✔
251
252	private onOidcAuthFailed(error: unknown): void {	2✔
253	if (	×
254	this.currentConnectionState.tag === "connecting" &&	×
255	this.currentConnectionState.connectionStringAuthType?.startsWith("oidc")	×
256	) {	×
257	void this.disconnectOnOidcError(error);	×
258	}	×
259	}	×
260
261	private onOidcAuthSucceeded(): void {	2✔
262	if (	10✔
263	this.currentConnectionState.tag === "connecting" &&	10✔
264	this.currentConnectionState.connectionStringAuthType?.startsWith("oidc")	7✔
265	) {	10✔
266	this.changeState("connection-success", { ...this.currentConnectionState, tag: "connected" });	7✔
267	}	7✔
268
269	this.logger.info({	10✔
270	id: LogId.oidcFlow,	10✔
271	context: "mongodb-oidc-plugin:auth-succeeded",	10✔
272	message: "Authenticated successfully.",	10✔
273	});	10✔
274	}	10✔
275
276	private onOidcNotifyDeviceFlow(flowInfo: { verificationUrl: string; userCode: string }): void {	2✔
277	if (	1✔
278	this.currentConnectionState.tag === "connecting" &&	1✔
279	this.currentConnectionState.connectionStringAuthType?.startsWith("oidc")	1✔
280	) {	1✔
281	this.changeState("connection-request", {	1✔
282	...this.currentConnectionState,	1✔
283	tag: "connecting",	1✔
284	connectionStringAuthType: "oidc-device-flow",	1✔
285	oidcLoginUrl: flowInfo.verificationUrl,	1✔
286	oidcUserCode: flowInfo.userCode,	1✔
287	});	1✔
288	}	1✔
289
290	this.logger.info({	1✔
291	id: LogId.oidcFlow,	1✔
292	context: "mongodb-oidc-plugin:notify-device-flow",	1✔
293	message: "OIDC Flow changed automatically to device flow.",	1✔
294	});	1✔
295	}	1✔
296
297	static inferConnectionTypeFromSettings(	2✔
298	config: UserConfig,	241✔
299	settings: { connectionString: string }	241✔
300	): ConnectionStringAuthType {	241✔
301	const connString = new ConnectionString(settings.connectionString);	241✔
302	const searchParams = connString.typedSearchParams<MongoClientOptions>();	241✔
303
304	switch (searchParams.get("authMechanism")) {	241✔
305	case "MONGODB-OIDC": {	241!
306	if (config.transport === "stdio" && config.browser) {	11✔
307	return "oidc-auth-flow";	7✔
308	}	7✔
309
310	if (config.transport === "http" && config.httpHost === "127.0.0.1" && config.browser) {	11✔
311	return "oidc-auth-flow";	1✔
312	}	1✔
313
314	return "oidc-device-flow";	3✔
315	}	3✔
316	case "MONGODB-X509":	241!
317	return "x.509";	1✔
318	case "GSSAPI":	241!
319	return "kerberos";	1✔
320	case "PLAIN":	241!
321	if (searchParams.get("authSource") === "$external") {	2✔
322	return "ldap";	1✔
323	}	1✔
324	return "scram";	1✔
325	// default should catch also null, but eslint complains
326	// about it.
327	case null:	241✔
328	default:	241✔
329	return "scram";	226✔
330	}	241✔
331	}	241✔
332
333	private async pingAndForget(serviceProvider: NodeDriverServiceProvider): Promise<void> {	2✔
334	try {	7✔
335	await serviceProvider?.runCommand?.("admin", { hello: 1 });	7✔
336	} catch (error: unknown) {	7!
UNCOV 337	this.logger.warning({	×
UNCOV 338	id: LogId.oidcFlow,	×
UNCOV 339	context: "pingAndForget",	×
UNCOV 340	message: String(error),	×
UNCOV 341	});	×
UNCOV 342	}	×
343	}	7✔
344
345	private async disconnectOnOidcError(error: unknown): Promise<void> {	2✔
346	try {	×
347	await this.disconnect();	×
348	} catch (error: unknown) {	×
349	this.logger.warning({	×
350	id: LogId.oidcFlow,	×
351	context: "disconnectOnOidcError",	×
352	message: String(error),	×
353	});	×
354	} finally {	×
355	this.changeState("connection-error", { tag: "errored", errorReason: String(error) });	×
356	}	×
357	}	×
358	}	2✔
359
360	/**
361	* Consumers of MCP server library have option to bring their own connection
362	* management if they need to. To support that, we enable injecting connection
363	* manager implementation through a factory function.
364	*/
365	export type ConnectionManagerFactoryFn = (createParams: {
366	logger: LoggerBase;
367	deviceId: DeviceId;
368	userConfig: UserConfig;
369	}) => Promise<ConnectionManager>;
370
371	export const createMCPConnectionManager: ConnectionManagerFactoryFn = ({ logger, deviceId, userConfig }) => {	2✔
372	const driverOptions = setupDriverConfig({	7✔
373	config: userConfig,	7✔
374	defaults: defaultDriverOptions,	7✔
375	});	7✔
376
377	return Promise.resolve(new MCPConnectionManager(userConfig, driverOptions, logger, deviceId));	7✔
378	};	7✔

mongodb-js / mongodb-mcp-server / 17649929543

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