Roo-Code/src/services/mcp
Seth Miller f839d4c27b
fix: prevent MCP server restart when toggling tool permissions (#8633)
* fix: prevent MCP server restart when toggling tool permissions

Add isProgrammaticUpdate flag to distinguish between programmatic config
updates and user-initiated file changes. Skip file watcher processing
during programmatic updates to prevent unnecessary server restarts.

* fix(mcp): prevent server reconnection when toggling disabled state

Fixed bug where MCP servers would reconnect instead of staying disabled when toggled off. The issue was that toggleServerDisabled() used stale in-memory config instead of reading the fresh config from disk after writing the disabled flag.

Changes:
Added readServerConfigFromFile() helper to read and validate server config from disk
Updated disable path to read fresh config before calling connectToServer()
Updated enable path to read fresh config before calling connectToServer()
This ensures the disabled: true flag is properly read, causing connectToServer() to create a disabled placeholder connection instead of actually connecting the server.

+ refactor(mcp): use safeWriteJson for atomic config writes

Replace JSON.stringify + fs.writeFile with safeWriteJson in McpHub.ts
to prevent data corruption through atomic writes with file locking.

* fix(mcp): prevent race condition in isProgrammaticUpdate flag

Replace multiple independent reset timers with a single timer that gets
cleared and rescheduled on each programmatic config update. This prevents
the flag from being reset prematurely when multiple rapid updates occur,
which could cause unwanted server restarts during the file watcher's
debounce period.

+ fix(mcp): ensure isProgrammaticUpdate flag cleanup with try-finally

Wrap safeWriteJson() calls in try-finally blocks to guarantee the
isProgrammaticUpdate flag is always reset, even if the write operation
fails. This prevents the flag from being stuck at true indefinitely,
which would cause subsequent user-initiated config changes to be
silently ignored.
2025-10-28 19:42:22 -04:00
..
__tests__ Move @roo-code/cloud to the Roo-Code repo (#7503) 2025-08-28 11:18:45 -07:00
McpHub.ts fix: prevent MCP server restart when toggling tool permissions (#8633) 2025-10-28 19:42:22 -04:00
McpServerManager.ts fix: prevent race conditions in McpServerManager singleton initialization 2025-02-07 17:12:39 -03:00