chenhg5/cc-connect · error

googlechat: create response missing message name

Error message

googlechat: create response missing message name

What it means

This error is thrown when the Google Chat API response to the create-message call decodes as JSON but the `name` field is empty. The message resource name (e.g. "spaces/AAA/messages/MMM") is required to build the PATCH URL used by UpdateMessage, so without it the library cannot hand back a usable preview handle. It is a defensive check that the API returned a well-formed message resource.

Solutions

1. Verify the response actually comes from the Google Chat API (correct chatAPIBase, no proxy substitution)
2. Check the API error payload in the body — an auth or permission failure often returns JSON without a message resource
3. Confirm the platform adapter version matches the current Google Chat API response schema (name field is required)
4. Enable request/response logging for the chat API call and inspect the payload

handle, err := p.SendPreviewStart(ctx, rctx, initialText)
if err != nil {
    if strings.Contains(err.Error(), "missing message name") {
        slog.Warn("googlechat preview: API returned no message name; verify API schema and auth", "error", err)
    }
    return fmt.Errorf("start streaming preview: %w", err)
}

When it happens

Trigger: SendPreviewStart decodes the response successfully but msg.Name == "" — the JSON body was valid yet lacked a "name" field (or it was empty), e.g. an unexpected success payload or an error-shaped JSON body sent with a misleading status code.

Common situations: Google Chat API version/behavior changes altering the response shape; a proxy returning a valid-JSON but non-message body; misconfigured auth causing an API error JSON (e.g. {"error":{...}}) to come back; custom chatAPIBase pointing at an endpoint that does not return message resources.

Understand the failure class

Background: "invalid response format", "malformed payload", "missing data field": when an API returns 200 but the response shape is wrong — this error's family across 23 libraries.

Related errors

• googlechat: build update request
• googlechat: invalid preview handle type %T
• googlechat: parse create response
• googlechat: upload: decode response
• googlechat: upload: empty resourceName in response

AI-assisted analysis of chenhg5/cc-connect@4000b2338a (2026-09-06). Data as JSON: /api/errors/9b2cc06f40a748a8. Report an issue: GitHub.

Appendix: source

Thrown at platform/googlechat/streaming.go:60

	resp, err := p.doRequest(req)
	if err != nil {
		return nil, fmt.Errorf("googlechat: send preview: %w", err)
	}
	defer func() {
		if err := resp.Body.Close(); err != nil {
			slog.Warn("googlechat: close preview response body", "error", err)
		}
	}()
	var msg struct {
		Name string `json:"name"`
	}
	if err := json.NewDecoder(resp.Body).Decode(&msg); err != nil {
		return nil, fmt.Errorf("googlechat: parse create response: %w", err)
	}
	// drain any bytes json.Decoder left unread so the connection is reusable
	_, _ = io.Copy(io.Discard, resp.Body)
	if msg.Name == "" {
		return nil, fmt.Errorf("googlechat: create response missing message name")
	}
	return &previewHandle{name: msg.Name}, nil
}

// buildUpdateRequest builds the PATCH URL and JSON body to update a message's text.
func buildUpdateRequest(msgName, content string) (string, []byte, error) {
	u := chatAPIBase + msgName + "?updateMask=text"
	b, err := json.Marshal(map[string]any{"text": content})
	if err != nil {
		return "", nil, fmt.Errorf("googlechat: marshal update body: %w", err)
	}
	return u, b, nil
}

// UpdateMessage patches the preview message text in place. The engine passes the
// handle returned by SendPreviewStart (not the reply context). Implements
// core.MessageUpdater.
func (p *Platform) UpdateMessage(ctx context.Context, handle any, content string) error {

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