notifyResourceUpdated method

void notifyResourceUpdated(String uri, { ResourceContent? content, })

Notify clients about a resource update

uri The URI of the updated resource content Optional resource content. If provided, sends ResourceContentInfo format. If omitted, sends only URI (MCP 2025-03-26 standard compliant).

Implementation

void notifyResourceUpdated(String uri, {ResourceContent? content}) {
  // Invalidate cache
  _resourceCache.remove(uri);

  if (!isConnected || !capabilities.hasResources) return;

  final subscribers = _resourceSubscriptions[uri];
  if (subscribers == null || subscribers.isEmpty) return;

  // Build notification based on whether content is provided
  final Map<String, dynamic> notification;
  if (content != null) {
    // Extended format with ResourceContentInfo structure
    notification = {
      'uri': uri,
      'content': {
        'uri': uri,
        'text': content.text,
        'blob': content.blob,
        'mimeType': content.mimeType,
      },
    };
  } else {
    // Standard MCP 2025-03-26 format (URI only)
    notification = {
      'uri': uri,
    };
  }

  for (final sessionId in subscribers) {
    if (_sessions.containsKey(sessionId)) {
      _sendNotification(sessionId, 'notifications/resources/updated', notification);
    }
  }
}