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Fix automatic log level handling for sessionless connections (#917)

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Cliff Hall 2025-09-09 16:35:08 -04:00 • committed by GitHub
commit ebf39330f3
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1 changed files with 158 additions and 6 deletions
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8
src/server/index.ts
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@ -117,7 +117,7 @@ export class Server<
const transportSessionId: string | undefined = extra.sessionId || extra.requestInfo?.headers['mcp-session-id'] as string || undefined;
const { level } = request.params;
const parseResult = LoggingLevelSchema.safeParse(level);
if (transportSessionId && parseResult.success) {
if (parseResult.success) {
this._loggingLevels.set(transportSessionId, parseResult.data);
}
return {};
@ -126,7 +126,7 @@ export class Server<
}
// Map log levels by session id
private _loggingLevels = new Map<string, LoggingLevel>();
private _loggingLevels = new Map<string | undefined, LoggingLevel>();
// Map LogLevelSchema to severity index
private readonly LOG_LEVEL_SEVERITY = new Map(
@ -134,7 +134,7 @@ export class Server<
);
// Is a message with the given level ignored in the log level set for the given session id?
private isMessageIgnored = (level: LoggingLevel, sessionId: string): boolean => {
private isMessageIgnored = (level: LoggingLevel, sessionId?: string): boolean => {
const currentLevel = this._loggingLevels.get(sessionId);
return (currentLevel)
? this.LOG_LEVEL_SEVERITY.get(level)! < this.LOG_LEVEL_SEVERITY.get(currentLevel)!
@ -398,7 +398,7 @@ export class Server<
*/
async sendLoggingMessage(params: LoggingMessageNotification["params"], sessionId?: string) {
if (this._capabilities.logging) {
if (!sessionId || !this.isMessageIgnored(params.level, sessionId)) {
if (!this.isMessageIgnored(params.level, sessionId)) {
return this.notification({method: "notifications/message", params})
}
}