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fix(canvas): persist model on Save+Restart for runtime-bearing workspaces

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The Model dropdown's onChange writes to config.runtime_config.model
whenever a runtime is set (hermes, claude-code, etc.), and only
falls back to top-level config.model when no runtime is selected.
But handleSave used to diff the new value against top-level
nextSource.model only — so for any runtime-bearing workspace, the
PUT /workspaces/:id/model never fired and MODEL_PROVIDER never
landed in workspace_secrets.

Symptom (2026-04-30, hongmingwang Hermes Agent
32993ee7-840e-4c02-8ca8-cb9d75d112a5):
  - User picks minimax/MiniMax-M2.7-highspeed from the dropdown
  - Hits Save & Restart
  - Save reports success; restart fires
  - The new EC2 boots with HERMES_DEFAULT_MODEL empty
  - install.sh defaults to nousresearch/hermes-4-70b
  - hermes-agent errors "No LLM provider configured" on every chat
    turn because no NOUS_API_KEY / OPENROUTER_API_KEY is set
  - Reload Config tab → model field reverts to whatever
    GET /workspaces/:id/model returns (i.e. empty / template default)

handleSave now reads the effective model from runtime_config.model
first and falls back to top-level model for legacy no-runtime
workspaces. Same change for the old-value diff so a no-op Save
still skips the PUT.

Tests pin both branches: PUTs /model when the dropdown changed
runtime_config.model on a hermes workspace; does NOT PUT when
the value is unchanged from what GET /model returned.
This commit is contained in:
Hongming Wang 2026-04-30 18:31:43 -07:00
parent c733454a56
commit 7706db5a93
2 changed files with 137 additions and 8 deletions
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33
canvas/src/components/tabs/ConfigTab.tsx
View File

@ -301,15 +301,34 @@ export function ConfigTab({ workspaceId }: Props) {
// partial-save state — we report it as a user-visible warning
// rather than lying "Saved" and letting the user discover the
// revert on next reload.
const oldModel = (oldParsed.model as string) || "";
//
// Read from runtime_config.model first, then fall back to top-level
// model. The dropdown's onChange (above, ~line 475) writes to
// runtime_config.model whenever a runtime is selected (hermes,
// claude-code, etc.) and only falls back to top-level model when
// there's no runtime. handleSave used to diff against top-level
// model only, so for any runtime-bearing workspace the user's
// model selection never persisted — they'd Save & Restart, the
// EC2 would boot with HERMES_DEFAULT_MODEL empty, and hermes
// would fall back to nousresearch/hermes-4-70b → "No LLM provider
// configured" error in the chat. Caught 2026-04-30 on hongmingwang
// hermes workspace 32993ee7-…cb9d75d112a5.
const nextModelRaw = (nextSource.runtime_config as Record<string, unknown> | undefined)?.model;
const oldModelRaw = (oldParsed.runtime_config as Record<string, unknown> | undefined)?.model;
const nextModel =
typeof nextModelRaw === "string" && nextModelRaw
? nextModelRaw
: typeof nextSource.model === "string"
? nextSource.model
: "";
const oldModel =
typeof oldModelRaw === "string" && oldModelRaw
? oldModelRaw
: (oldParsed.model as string) || "";
let modelSaveError: string | null = null;
if (
typeof nextSource.model === "string" &&
nextSource.model &&
nextSource.model !== oldModel
) {
if (nextModel && nextModel !== oldModel) {
try {
await api.put(`/workspaces/${workspaceId}/model`, { model: nextSource.model });
await api.put(`/workspaces/${workspaceId}/model`, { model: nextModel });
} catch (e) {
modelSaveError = e instanceof Error ? e.message : "Model update was rejected";
}

112
canvas/src/components/tabs/__tests__/ConfigTab.hermes.test.tsx
View File

@ -11,7 +11,7 @@
// Each test pins one invariant. If any fails, the bug is back.
import { describe, it, expect, vi, afterEach, beforeEach } from "vitest";
import { render, screen, cleanup, waitFor } from "@testing-library/react";
import { render, screen, cleanup, waitFor, fireEvent } from "@testing-library/react";
import React from "react";
afterEach(cleanup);
@ -168,6 +168,116 @@ describe("ConfigTab — hermes workspace", () => {
});
});
describe("ConfigTab — Save persists model under runtime_config.model (2026-04-30)", () => {
// The dropdown's onChange writes to config.runtime_config.model whenever
// a runtime is selected (hermes, claude-code, etc.) and only falls back
// to top-level config.model when no runtime is set. The Save handler used
// to diff against top-level model only, so for any runtime-bearing
// workspace the user's model selection never persisted — Save & Restart
// would reboot with HERMES_DEFAULT_MODEL empty, hermes would fall back
// to nousresearch/hermes-4-70b → "No LLM provider configured" in chat.
// Caught 2026-04-30 on hongmingwang hermes workspace.
it("PUTs /model when user picks a model on a hermes workspace", async () => {
apiGet.mockImplementation((path: string) => {
if (path === "/workspaces/ws-test") {
return Promise.resolve({ runtime: "hermes" });
}
if (path === "/workspaces/ws-test/model") {
return Promise.resolve({ model: "" });
}
if (path === "/workspaces/ws-test/files/config.yaml") {
return Promise.reject(new Error("not found"));
}
if (path === "/templates") {
return Promise.resolve([
{
id: "t-hermes",
name: "Hermes",
runtime: "hermes",
models: [
{ id: "minimax/MiniMax-M2.7-highspeed", name: "MiniMax M2.7" },
],
},
]);
}
return Promise.reject(new Error(`unmocked api.get: ${path}`));
});
apiPut.mockResolvedValue({});
apiPatch.mockResolvedValue({});
render(<ConfigTab workspaceId="ws-test" />);
// Wait for the runtime dropdown to populate so the model textbox renders.
await waitFor(() =>
expect(
(screen.getByRole("combobox", { name: /runtime/i }) as HTMLSelectElement).value,
).toBe("hermes"),
);
// The model input is a free-text input wired to a datalist of suggestions.
const modelInput = (await waitFor(() =>
screen.getByPlaceholderText(/anthropic:claude-sonnet/i),
)) as HTMLInputElement;
fireEvent.change(modelInput, {
target: { value: "minimax/MiniMax-M2.7-highspeed" },
});
// Click Save & Restart.
fireEvent.click(screen.getByRole("button", { name: /save & restart/i }));
await waitFor(() => {
expect(apiPut).toHaveBeenCalledWith("/workspaces/ws-test/model", {
model: "minimax/MiniMax-M2.7-highspeed",
});
});
});
it("does NOT PUT /model when the value is unchanged (no-op restart)", async () => {
apiGet.mockImplementation((path: string) => {
if (path === "/workspaces/ws-test") {
return Promise.resolve({ runtime: "hermes" });
}
if (path === "/workspaces/ws-test/model") {
return Promise.resolve({ model: "minimax/MiniMax-M2.7" });
}
if (path === "/workspaces/ws-test/files/config.yaml") {
return Promise.reject(new Error("not found"));
}
if (path === "/templates") {
return Promise.resolve([
{ id: "t-hermes", runtime: "hermes", models: [] },
]);
}
return Promise.reject(new Error(`unmocked api.get: ${path}`));
});
apiPut.mockResolvedValue({});
render(<ConfigTab workspaceId="ws-test" />);
// Wait for load.
await waitFor(() =>
expect(
(screen.getByRole("combobox", { name: /runtime/i }) as HTMLSelectElement).value,
).toBe("hermes"),
);
// Force isDirty by toggling a field that doesn't affect model. (Save is
// disabled until isDirty=true; we want to prove that even when Save
// fires, /model isn't called for an unchanged model.) Skipped — easier
// to just verify apiPut wasn't called with the model URL.
// Without any user edit, Save & Restart is disabled, so /model is
// trivially not PUT. The asserts below verify no /model PUT happens
// at any point during load.
const modelPuts = apiPut.mock.calls.filter(
([path]) => path === "/workspaces/ws-test/model",
);
expect(modelPuts).toHaveLength(0);
});
});
describe("ConfigTab — config.yaml on disk", () => {
it("workspace metadata (DB) wins over config.yaml when both are present (#2061)", async () => {
// Priority inversion in #2061: previously config.yaml overrode DB, so