| 1 | package plugin |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | ) |
| 9 | |
| 10 | func (t *sdkSessionTransport) call(ctx context.Context, method string, params any) (json.RawMessage, error) { |
| 11 | managed, err := t.acquire(ctx) |
| 12 | if err != nil { |
| 13 | return nil, t.sanitizeError(err, nil) |
| 14 | } |
| 15 | result, err := t.invokeManaged(ctx, managed, method, params) |
| 16 | if err == nil { |
| 17 | t.clearRuntimeError(managed) |
| 18 | return result, nil |
| 19 | } |
| 20 | |
| 21 | if isExplicitMCPSessionMissing(err) || managed.session.ID() == "" && t.isStreamableHTTPNotFound(err) { |
| 22 | if managed.session.ID() == "" { |
| 23 | endpointErr := fmt.Errorf("MCP endpoint returned HTTP 404 without an established session: %w", err) |
| 24 | t.noteRuntimeError(managed, SessionErrorProtocol, endpointErr) |
| 25 | return nil, t.sanitizeError(endpointErr, managed) |
| 26 | } |
| 27 | t.noteRuntimeError(managed, SessionErrorSessionMissing, err) |
| 28 | t.invalidate(managed) |
| 29 | replacement, rebuildErr := t.acquire(ctx) |
| 30 | if rebuildErr != nil { |
| 31 | return nil, t.sanitizeError(fmt.Errorf("MCP session expired; rebuild failed: %w", rebuildErr), managed) |
| 32 | } |
| 33 | result, err = t.invokeManaged(ctx, replacement, method, params) |
| 34 | if err == nil { |
| 35 | t.clearRuntimeError(replacement) |
| 36 | return result, nil |
| 37 | } |
| 38 | return nil, t.sanitizeError(err, replacement) |
| 39 | } |
| 40 | |
| 41 | if isTerminalSDKError(err) || isAmbiguousTransportError(err) || errors.Is(err, context.DeadlineExceeded) { |
| 42 | kind := SessionErrorStreamClosed |
| 43 | if errors.Is(err, context.DeadlineExceeded) { |
| 44 | kind = SessionErrorTimeout |
| 45 | } else if !isTerminalSDKError(err) { |
| 46 | kind = SessionErrorTransport |
| 47 | } |
| 48 | t.noteRuntimeError(managed, kind, err) |
| 49 | t.invalidate(managed) |
| 50 | if safeToReplayMCPMethod(method) { |
| 51 | replacement, rebuildErr := t.acquire(ctx) |
| 52 | if rebuildErr != nil { |
| 53 | return nil, t.sanitizeError(fmt.Errorf("MCP connection closed; rebuild failed: %w", rebuildErr), managed) |
| 54 | } |
| 55 | result, err = t.invokeManaged(ctx, replacement, method, params) |
| 56 | if err == nil { |
| 57 | t.clearRuntimeError(replacement) |
| 58 | return result, nil |
| 59 | } |
| 60 | return nil, t.sanitizeError(err, replacement) |
| 61 | } |
| 62 | t.startAutoReconnect() |
| 63 | return nil, t.sanitizeError(fmt.Errorf("MCP tool connection closed after dispatch; execution result is unknown and the call was not retried: %w", err), managed) |
| 64 | } |
| 65 | |
| 66 | kind := classifySessionError(err) |
| 67 | t.noteRuntimeError(managed, kind, err) |
| 68 | return nil, t.sanitizeError(err, managed) |
| 69 | } |
| 70 |