| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "context" |
| 6 | "crypto/sha256" |
| 7 | "encoding/hex" |
| 8 | "encoding/json" |
| 9 | "errors" |
| 10 | "fmt" |
| 11 | "io" |
| 12 | "net/http" |
| 13 | "strings" |
| 14 | "time" |
| 15 | |
| 16 | "reasonix/internal/config" |
| 17 | ) |
| 18 | |
| 19 | type remoteModelSettingsStatus struct { |
| 20 | Application *ModelApplicationDetails `json:"application,omitempty"` |
| 21 | config.ModelSettingsOwnership |
| 22 | Version int `json:"version"` |
| 23 | Revision string `json:"revision"` |
| 24 | Model string `json:"model"` |
| 25 | SessionPath string `json:"sessionPath"` |
| 26 | OwnedRevisions []string `json:"ownedRevisions"` |
| 27 | UnversionedOwners bool `json:"unversionedOwners"` |
| 28 | } |
| 29 | |
| 30 | func credentialProxyScope(host, workspace string) string { |
| 31 | sum := sha256.Sum256(fmt.Appendf(nil, "%d:%s%s", len(host), host, workspace)) |
| 32 | return hex.EncodeToString(sum[:]) |
| 33 | } |
| 34 | |
| 35 | // Status refreshes already run when foreground/background work settles. Read |
| 36 | // ownership under the manager gate, then reject receipts overtaken by source |
| 37 | // refreshes using the Serve-wide ownership sequence. |
| 38 | func (a *App) refreshRemoteModelOwnership(ctx context.Context, tabID string, client *http.Client, generation uint64) { |
| 39 | a.remoteMu.Lock() |
| 40 | manager, ok := a.remoteRuntime.(*desktopRemoteManager) |
| 41 | a.remoteMu.Unlock() |
| 42 | if !ok { |
| 43 | return |
| 44 | } |
| 45 | a.remoteTabMu.Lock() |
| 46 | tab := a.remoteTabs[tabID] |
| 47 | if tab == nil || tab.client != client || tab.gen != generation || tab.settings.revision == "" { |
| 48 | a.remoteTabMu.Unlock() |
| 49 | return |
| 50 | } |
| 51 | host, workspace, path := tab.ref.HostID, tab.ref.Workspace, tab.routing.currentPath |
| 52 | a.remoteTabMu.Unlock() |
| 53 | managed := manager.managed(host) |
| 54 | if managed == nil { |
| 55 | return |
| 56 | } |
| 57 | managed.serveMu.Lock() |
| 58 | defer managed.serveMu.Unlock() |
| 59 | if !manager.isCurrent(host, managed) { |
| 60 | return |
| 61 | } |
| 62 | manager.mu.Lock() |
| 63 | server := managed.serves[workspace] |
| 64 | base := "" |
| 65 | if server != nil { |
| 66 | base = server.view.LocalURL |
| 67 | } |
| 68 | manager.mu.Unlock() |
| 69 | if base == "" { |
| 70 | return |
| 71 | } |
| 72 | status, err := remoteModelSettingsRequest(ctx, client, base, path, nil) |
| 73 | if err == nil && manager.isCurrent(host, managed) { |
| 74 | if !a.reconcileCredentialProxyGenerations(host, workspace, status) { |
| 75 | return |
| 76 | } |
| 77 | // Serve may have applied a new snapshot itself for a browser or queued |
| 78 | // turn. Reflect that acknowledgement on the same bound Desktop target. |
| 79 | if cfg, loadErr := config.LoadModelRuntimeSnapshot("."); loadErr == nil { |
| 80 | for _, provider := range cfg.Providers { |
| 81 | for _, modelID := range provider.ModelList() { |
| 82 | ref := provider.Name + "/" + modelID |
| 83 | if remoteSnapshotProviderName(provider.Name, modelID)+"/"+modelID != status.Model || cfg.ModelRuntimeFingerprint(ref) != status.Revision { |
| 84 | continue |
| 85 | } |
| 86 | a.remoteTabMu.Lock() |
| 87 | if current := a.remoteTabs[tabID]; current == tab && current.client == client && current.gen == generation && current.routing.currentPath == path && status.SessionPath == path { |
| 88 | current.model, current.settings.revision = ref, status.Revision |
| 89 | current.settings.generation, current.settings.sessionPath = generation, path |
| 90 | current.settings.failure, current.settings.failureRevision = "", "" |
| 91 | } |
| 92 | a.remoteTabMu.Unlock() |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | // Each model has its own immutable tunnel token. Provider names are stable |
| 100 | // across revisions; only the virtual credentials and resolver content change. |
| 101 | func remoteSnapshotProviderName(provider, model string) string { |
| 102 | sum := sha256.Sum256([]byte(model)) |
| 103 | return provider + "-" + hex.EncodeToString(sum[:6]) |
| 104 | } |
| 105 | |
| 106 | func (a *App) buildRemoteModelSettings(host, workspace, model string, remotePort int, cfg *config.Config) (*config.ModelRuntimeSettings, string, error) { |
| 107 | offerID, err := config.NewModelSettingsOfferID() |
| 108 | if err != nil { |
| 109 | return nil, "", err |
| 110 | } |
| 111 | return a.buildRemoteModelSettingsOffer(host, workspace, model, remotePort, cfg, offerID) |
| 112 | } |
| 113 | |
| 114 | func (a *App) buildRemoteModelSettingsOffer(host, workspace, model string, remotePort int, cfg *config.Config, offerID string) (_ *config.ModelRuntimeSettings, _ string, buildErr error) { |
| 115 | defer func() { |
| 116 | if buildErr != nil { |
| 117 | a.finishCredentialProxyOffer(host, workspace, offerID) |
| 118 | } |
| 119 | }() |
| 120 | revision := cfg.ModelRuntimeFingerprint(model) |
| 121 | bundle := &config.ModelRuntimeSettings{OfferID: offerID, Revision: revision, ProxyURL: fmt.Sprintf("http://127.0.0.1:%d", remotePort), Credentials: map[string]string{}, Preferences: cfg.RuntimeModelPreferences()} |
| 122 | refs := map[string]string{} |
| 123 | for _, base := range cfg.Providers { |
| 124 | if !base.Configured() || !modelProviderAccessAllowed(cfg.Desktop.ProviderAccess, base.Name) { |
| 125 | continue |
| 126 | } |
| 127 | for _, modelID := range base.ModelList() { |
| 128 | ref := base.Name + "/" + modelID |
| 129 | entry, ok := cfg.ResolveModel(ref) |
| 130 | if !ok { |
| 131 | continue |
| 132 | } |
| 133 | route, err := a.applyCredentialProxySnapshot(host, workspace, ref, cfg, revision, offerID) |
| 134 | if err != nil { |
| 135 | return nil, "", err |
| 136 | } |
| 137 | p := *entry |
| 138 | p.Name = remoteSnapshotProviderName(base.Name, modelID) |
| 139 | p.ModelsURL, p.BalanceURL, p.APIKeyEnv = "", "", "" |
| 140 | p.Headers, p.ExtraBody = nil, nil |
| 141 | p.NoProxy = true |
| 142 | p.Model, p.Default, p.Models = modelID, "", nil |
| 143 | bundle.Providers = append(bundle.Providers, p) |
| 144 | bundle.Credentials[p.Name] = route.token |
| 145 | if ref == model { |
| 146 | bundle.SourceToken = route.token |
| 147 | } |
| 148 | refs[ref] = p.Name + "/" + modelID |
| 149 | if modelID == base.DefaultModel() { |
| 150 | refs[base.Name] = refs[ref] |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | mapRef := func(ref string) string { |
| 155 | if mapped := refs[ref]; mapped != "" { |
| 156 | return mapped |
| 157 | } |
| 158 | return ref |
| 159 | } |
| 160 | p := &bundle.Preferences |
| 161 | p.PlannerModel, p.VisionModel, p.WebSearchModel = mapRef(p.PlannerModel), mapRef(p.VisionModel), mapRef(p.WebSearchModel) |
| 162 | p.GuardianModel, p.RecoveryModel, p.SubagentModel = mapRef(p.GuardianModel), mapRef(p.RecoveryModel), mapRef(p.SubagentModel) |
| 163 | p.SubagentModels = map[string]string{} |
| 164 | for name, ref := range cfg.Agent.SubagentModels { |
| 165 | p.SubagentModels[name] = mapRef(ref) |
| 166 | } |
| 167 | if refs[model] == "" { |
| 168 | return nil, "", fmt.Errorf("no available remote model in saved settings") |
| 169 | } |
| 170 | bundle.References = refs |
| 171 | return bundle, refs[model], nil |
| 172 | } |
| 173 | |
| 174 | func (a *App) finishCredentialProxyOffer(host, workspace, offerID string) { |
| 175 | if offerID == "" { |
| 176 | return |
| 177 | } |
| 178 | a.credProxyMu.Lock() |
| 179 | p := a.credProxy |
| 180 | a.credProxyMu.Unlock() |
| 181 | if p == nil { |
| 182 | return |
| 183 | } |
| 184 | p.mu.Lock() |
| 185 | defer p.mu.Unlock() |
| 186 | scope := credentialProxyScope(host, workspace) |
| 187 | for _, route := range p.routes { |
| 188 | if route.scope == scope { |
| 189 | delete(route.holds, offerID) |
| 190 | } |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | // updateMu serializes reservations; releasing one only needs the route lock. |
| 195 | // Refuse excess candidates without evicting a runtime or an accepted request. |
| 196 | func (p *credentialProxy) validateModelSettingsOfferCapacity(up proxyUpstream) error { |
| 197 | if up.offerID == "" { |
| 198 | return nil |
| 199 | } |
| 200 | p.mu.Lock() |
| 201 | defer p.mu.Unlock() |
| 202 | offers := map[string]bool{} |
| 203 | for _, route := range p.routes { |
| 204 | if route.scope != up.scope { |
| 205 | continue |
| 206 | } |
| 207 | if route.holds[up.offerID] { |
| 208 | return nil |
| 209 | } |
| 210 | for id := range route.holds { |
| 211 | offers[id] = true |
| 212 | } |
| 213 | } |
| 214 | if len(offers) >= 64 { |
| 215 | return fmt.Errorf("too many unacknowledged model settings offers for this session") |
| 216 | } |
| 217 | return nil |
| 218 | } |
| 219 | |
| 220 | // A managed Serve can refresh at its own run boundary, including durable |
| 221 | // inbox dispatch. Authentication is the currently owned immutable route token; |
| 222 | // the request cannot choose a local workspace or disclose a real credential. |
| 223 | func (a *App) serveModelSettingsSource(w http.ResponseWriter, r *http.Request, route *credProxyRoute) { |
| 224 | if r.Method != http.MethodPost { |
| 225 | http.Error(w, "method not allowed", http.StatusMethodNotAllowed) |
| 226 | return |
| 227 | } |
| 228 | var request config.ModelSettingsSourceRequest |
| 229 | decoder := json.NewDecoder(http.MaxBytesReader(w, r.Body, 64<<10)) |
| 230 | decoder.DisallowUnknownFields() |
| 231 | if err := decoder.Decode(&request); err != nil || len(request.OfferID) != 32 || (request.Mode != "prepare" && request.Mode != "finish" && request.Mode != "inspect") { |
| 232 | http.Error(w, "invalid model settings request", http.StatusBadRequest) |
| 233 | return |
| 234 | } |
| 235 | if _, err := hex.DecodeString(request.OfferID); err != nil { |
| 236 | http.Error(w, "invalid model settings offer", http.StatusBadRequest) |
| 237 | return |
| 238 | } |
| 239 | if request.Mode == "inspect" { |
| 240 | cfg, err := config.LoadModelRuntimeSnapshot(".") |
| 241 | if err != nil { |
| 242 | http.Error(w, "cannot verify saved settings", http.StatusServiceUnavailable) |
| 243 | return |
| 244 | } |
| 245 | response := config.ModelSettingsSourceResponse{Version: 1, Revision: cfg.ModelRuntimeFingerprint(route.ref)} |
| 246 | if route.modelSnapshot != nil { |
| 247 | if entry, ok := route.modelSnapshot.ResolveModel(route.ref); ok { |
| 248 | response.ConnectionTarget = config.SafeModelConnectionTarget(config.ProviderEffectiveRequestURL(entry)) |
| 249 | } |
| 250 | } |
| 251 | if request.AppliedRevision != route.revision { |
| 252 | response.ContinuationUnavailable = "configuration ownership changed" |
| 253 | } else if err := config.ValidateModelRuntimeContinuation(route.modelSnapshot, cfg); err != nil { |
| 254 | response.ContinuationUnavailable = err.Error() |
| 255 | } else { |
| 256 | response.CanContinue = true |
| 257 | } |
| 258 | w.Header().Set("Content-Type", "application/json") |
| 259 | _ = json.NewEncoder(w).Encode(response) |
| 260 | return |
| 261 | } |
| 262 | offers := []string{request.PreviousOfferID} |
| 263 | if request.Mode == "finish" { |
| 264 | offers = append(offers, request.OfferID) |
| 265 | } |
| 266 | if !a.reconcileCredentialProxyGenerations(route.host, route.workspace, remoteModelSettingsStatus{ModelSettingsOwnership: request.ModelSettingsOwnership, Version: 1, OwnedRevisions: request.OwnedRevisions, UnversionedOwners: request.UnversionedOwners}, offers...) { |
| 267 | http.Error(w, "stale model settings ownership", http.StatusConflict) |
| 268 | return |
| 269 | } |
| 270 | cfg, err := config.LoadModelRuntimeSnapshot(".") |
| 271 | if err != nil { |
| 272 | http.Error(w, "cannot read saved model settings", http.StatusServiceUnavailable) |
| 273 | return |
| 274 | } |
| 275 | model := request.Model |
| 276 | if model == "" { |
| 277 | model = route.ref |
| 278 | } |
| 279 | model, err = resolveModelSettingsRuntime(cfg, model) |
| 280 | if err != nil { |
| 281 | http.Error(w, "choose an available model in Desktop Settings before starting another run", http.StatusConflict) |
| 282 | return |
| 283 | } |
| 284 | response := config.ModelSettingsSourceResponse{Version: 1, Revision: cfg.ModelRuntimeFingerprint(model)} |
| 285 | if request.Mode == "prepare" && request.AppliedRevision != response.Revision { |
| 286 | if request.RemotePort < 1 || request.RemotePort > 65535 { |
| 287 | http.Error(w, "invalid credential tunnel port", http.StatusBadRequest) |
| 288 | return |
| 289 | } |
| 290 | response.Settings, response.Ref, err = a.buildRemoteModelSettingsOffer(route.host, route.workspace, model, request.RemotePort, cfg, request.OfferID) |
| 291 | if err != nil { |
| 292 | http.Error(w, "cannot prepare saved model settings", http.StatusConflict) |
| 293 | return |
| 294 | } |
| 295 | if !a.reserveCredentialProxyInstall(route.host, route.workspace, request.OfferID, response.Revision, request.OwnershipIncarnation) { |
| 296 | a.finishCredentialProxyOffer(route.host, route.workspace, request.OfferID) |
| 297 | http.Error(w, "model settings owner was replaced", http.StatusConflict) |
| 298 | return |
| 299 | } |
| 300 | } |
| 301 | w.Header().Set("Content-Type", "application/json") |
| 302 | _ = json.NewEncoder(w).Encode(response) |
| 303 | } |
| 304 | |
| 305 | const remoteModelSettingsUpgradeHint = "saved model settings require a newer remote Serve; upgrade or safely reconnect after its current work finishes" |
| 306 | |
| 307 | type remoteModelSettingsRejection struct { |
| 308 | message string |
| 309 | // unsupported marks rejections that mean the remote Serve predates the |
| 310 | // model-settings protocol entirely (no /model-settings route at all). |
| 311 | unsupported bool |
| 312 | } |
| 313 | |
| 314 | func (e *remoteModelSettingsRejection) Error() string { return e.message } |
| 315 | |
| 316 | // isRemoteModelSettingsUnsupported reports whether err means the remote Serve |
| 317 | // cannot speak the model-settings protocol, as opposed to refusing a specific |
| 318 | // snapshot (ownership conflicts, busy turns, and other transient rejections). |
| 319 | func isRemoteModelSettingsUnsupported(err error) bool { |
| 320 | var rejected *remoteModelSettingsRejection |
| 321 | return errors.As(err, &rejected) && rejected.unsupported |
| 322 | } |
| 323 | |
| 324 | func remoteModelSettingsRequest(ctx context.Context, client *http.Client, base, expectedPath string, body any) (remoteModelSettingsStatus, error) { |
| 325 | var result remoteModelSettingsStatus |
| 326 | method := http.MethodGet |
| 327 | var data []byte |
| 328 | if body != nil { |
| 329 | method = http.MethodPost |
| 330 | var err error |
| 331 | data, err = json.Marshal(body) |
| 332 | if err != nil { |
| 333 | return result, err |
| 334 | } |
| 335 | } |
| 336 | req, err := http.NewRequestWithContext(ctx, method, serveURL(base, "/model-settings"), bytes.NewReader(data)) |
| 337 | if err != nil { |
| 338 | return result, err |
| 339 | } |
| 340 | req.Header.Set("Content-Type", "application/json") |
| 341 | if expectedPath != "" { |
| 342 | req.Header.Set(expectedSessionPathHeader, expectedPath) |
| 343 | } |
| 344 | resp, err := client.Do(req) |
| 345 | if err != nil { |
| 346 | return result, err |
| 347 | } |
| 348 | defer resp.Body.Close() |
| 349 | if resp.StatusCode == http.StatusNotFound || resp.StatusCode == http.StatusMethodNotAllowed { |
| 350 | return result, &remoteModelSettingsRejection{message: remoteModelSettingsUpgradeHint, unsupported: true} |
| 351 | } |
| 352 | if resp.StatusCode != http.StatusOK { |
| 353 | detail, _ := io.ReadAll(io.LimitReader(resp.Body, 2048)) |
| 354 | return result, &remoteModelSettingsRejection{message: fmt.Sprintf("remote model settings status %d: %s", resp.StatusCode, strings.TrimSpace(string(detail)))} |
| 355 | } |
| 356 | payload, err := io.ReadAll(io.LimitReader(resp.Body, 1<<20)) |
| 357 | if err != nil { |
| 358 | return result, err |
| 359 | } |
| 360 | if err := json.Unmarshal(payload, &result); err != nil { |
| 361 | // Older Serves answer unknown routes with the HTML index; classify that |
| 362 | // document response as an unsupported model-settings protocol. |
| 363 | if trimmed := bytes.TrimSpace(payload); len(trimmed) > 0 && trimmed[0] == '<' { |
| 364 | return result, &remoteModelSettingsRejection{message: remoteModelSettingsUpgradeHint, unsupported: true} |
| 365 | } |
| 366 | return result, fmt.Errorf("decode remote model settings status: %w", err) |
| 367 | } |
| 368 | if result.Version != 1 { |
| 369 | return result, fmt.Errorf("remote Serve does not support immutable model settings") |
| 370 | } |
| 371 | return result, nil |
| 372 | } |
| 373 | |
| 374 | // ensureRemoteModelSettings is the Desktop remote run-admission boundary. |
| 375 | // Approval/ask/steer replies bypass it because they belong to the accepted run. |
| 376 | // The returned generation scopes the admission (revision or legacy skip) to one |
| 377 | // tab generation; callers must re-admit before a target that no longer runs it. |
| 378 | func (a *App) ensureRemoteModelSettings(tabID string) (string, uint64, error) { |
| 379 | if !a.remoteTabLocalProxy(tabID) { |
| 380 | return "", 0, nil |
| 381 | } |
| 382 | for { |
| 383 | cfg, err := config.LoadModelRuntimeSnapshot(".") |
| 384 | if err != nil { |
| 385 | return "", 0, err |
| 386 | } |
| 387 | a.remoteTabMu.Lock() |
| 388 | tab := a.remoteTabs[tabID] |
| 389 | if tab == nil { |
| 390 | a.remoteTabMu.Unlock() |
| 391 | return "", 0, fmt.Errorf("remote session is no longer available") |
| 392 | } |
| 393 | model, applied, generation, path := tab.model, tab.settings.revision, tab.gen, tab.routing.currentPath |
| 394 | valid := tab.settings.generation == generation && tab.settings.sessionPath == path |
| 395 | // Generation 0 is an unrecorded verdict, not a legacy one: fresh and |
| 396 | // restored tabs run generation 0 before their first attachment. |
| 397 | unsupported := tab.settings.unsupportedGen != 0 && tab.settings.unsupportedGen == generation |
| 398 | a.remoteTabMu.Unlock() |
| 399 | if unsupported { |
| 400 | return "", generation, nil |
| 401 | } |
| 402 | if model == "" { |
| 403 | model = resolveNewSessionModel(cfg) |
| 404 | } |
| 405 | desired := cfg.ModelRuntimeFingerprint(model) |
| 406 | if valid && applied == desired { |
| 407 | return applied, generation, nil |
| 408 | } |
| 409 | next, err := resolveModelSettingsRuntime(cfg, model) |
| 410 | if err == nil { |
| 411 | err = a.SetRemoteTabModel(tabID, next) |
| 412 | } |
| 413 | if err != nil { |
| 414 | if isRemoteModelSettingsUnsupported(err) { |
| 415 | // A legacy Serve cannot apply snapshots; admit without a revision |
| 416 | // only when the verdict belongs to the current connection. |
| 417 | a.remoteTabMu.Lock() |
| 418 | current := a.remoteTabs[tabID] |
| 419 | recorded := current == tab && current.gen == generation && current.routing.currentPath == path |
| 420 | if recorded { |
| 421 | current.settings.unsupportedGen = generation |
| 422 | } |
| 423 | a.remoteTabMu.Unlock() |
| 424 | if !recorded { |
| 425 | // A reconnect replaced the probe's target mid-flight; the |
| 426 | // replacement Serve may speak the protocol, so re-probe it |
| 427 | // instead of admitting against the retired fence. |
| 428 | continue |
| 429 | } |
| 430 | return "", generation, nil |
| 431 | } |
| 432 | a.remoteTabMu.Lock() |
| 433 | if current := a.remoteTabs[tabID]; current == tab && current.gen == generation && current.routing.currentPath == path { |
| 434 | current.settings.failure = modelSettingsIssue("apply_failed", err).Message |
| 435 | current.settings.failureRevision = desired |
| 436 | } |
| 437 | a.remoteTabMu.Unlock() |
| 438 | if detail := a.remoteModelApplicationDetails(tabID); detail != nil { |
| 439 | return "", 0, &modelApplicationError{cause: err, details: detail} |
| 440 | } |
| 441 | return "", 0, fmt.Errorf("model settings were saved but the remote session could not apply them: %w", err) |
| 442 | } |
| 443 | a.remoteTabMu.Lock() |
| 444 | acknowledged := tab.settings.revision != "" && tab.settings.generation == tab.gen && tab.settings.sessionPath == tab.routing.currentPath |
| 445 | a.remoteTabMu.Unlock() |
| 446 | if !acknowledged { |
| 447 | return "", 0, fmt.Errorf("remote session did not acknowledge the saved model settings") |
| 448 | } |
| 449 | // Read the current file again: another save may have won during the |
| 450 | // remote build. Never admit a new request with that stale completion. |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | func (a *App) appendRemoteModelSettingsStatus(result *ModelSettingsResult) { |
| 455 | cfg, err := config.LoadModelRuntimeSnapshot(".") |
| 456 | if err != nil { |
| 457 | return |
| 458 | } // the global read failure is already in the result |
| 459 | a.remoteTabMu.Lock() |
| 460 | defer a.remoteTabMu.Unlock() |
| 461 | for _, tab := range a.remoteTabs { |
| 462 | if tab == nil { |
| 463 | continue |
| 464 | } |
| 465 | host, ok := cfg.RemoteHost(tab.ref.HostID) |
| 466 | if !ok || !host.CredentialProxyEnabled() { |
| 467 | continue |
| 468 | } |
| 469 | model := tab.model |
| 470 | if model == "" { |
| 471 | model = resolveNewSessionModel(cfg) |
| 472 | } |
| 473 | desired := cfg.ModelRuntimeFingerprint(model) |
| 474 | // Generation 0 is an unrecorded verdict: a not-yet-attached tab has not |
| 475 | // probed any Serve and must stay pending, not claim not_required. |
| 476 | if tab.settings.unsupportedGen != 0 && tab.settings.unsupportedGen == tab.gen { |
| 477 | // Legacy targets never apply snapshots, so report them as not required |
| 478 | // instead of leaving the settings receipt pending indefinitely. |
| 479 | result.Targets = append(result.Targets, ModelSettingsTarget{TabID: tab.id, Title: tab.topicTitle, Application: "not_required", AppliedRevision: tab.settings.revision, DesiredRevision: desired}) |
| 480 | continue |
| 481 | } |
| 482 | state := "applied" |
| 483 | if tab.settings.revision != desired || tab.settings.generation != tab.gen || tab.settings.sessionPath != tab.routing.currentPath { |
| 484 | state = "pending" |
| 485 | blocked := tab.settings.details != nil && tab.settings.details.Code == "model_settings_pending" |
| 486 | if tab.settings.failure != "" && tab.settings.failureRevision == desired && !blocked { |
| 487 | state = "failed" |
| 488 | result.Application = "failed" |
| 489 | result.Issues = append(result.Issues, ModelSettingsIssue{Code: "remote_apply_failed", Message: tab.settings.failure}) |
| 490 | } else if result.Application != "failed" { |
| 491 | result.Application = "pending" |
| 492 | } |
| 493 | } |
| 494 | target := ModelSettingsTarget{TabID: tab.id, Title: tab.topicTitle, Application: state, AppliedRevision: tab.settings.revision, DesiredRevision: desired} |
| 495 | if state != "applied" { |
| 496 | target.Details = tab.settings.details |
| 497 | } |
| 498 | result.Targets = append(result.Targets, target) |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | // remoteModelApplicationState is scoped to one acknowledged session binding. |
| 503 | type remoteModelApplicationState struct { |
| 504 | details *ModelApplicationDetails |
| 505 | detailsGeneration uint64 |
| 506 | detailsPath string |
| 507 | revision string |
| 508 | failure string |
| 509 | failureRevision string |
| 510 | generation uint64 |
| 511 | sessionPath string |
| 512 | // unsupportedGen records a generation whose Serve predates model-settings; |
| 513 | // a reconnect or replacement generation probes the protocol again. |
| 514 | unsupportedGen uint64 |
| 515 | } |
| 516 | |
| 517 | func applyRemoteModelSettingsSnapshot(ctx context.Context, client *http.Client, base, expectedPath, remoteRef string, bundle *config.ModelRuntimeSettings, status remoteModelSettingsStatus) (remoteModelSettingsStatus, error) { |
| 518 | var err error |
| 519 | if status.Revision != bundle.Revision || status.Model != remoteRef { |
| 520 | body := map[string]any{"version": 1, "ref": remoteRef, "settings": bundle} |
| 521 | status, err = remoteModelSettingsRequest(ctx, client, base, expectedPath, body) |
| 522 | if err != nil { |
| 523 | readCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second) |
| 524 | defer cancel() |
| 525 | observed, readErr := remoteModelSettingsRequest(readCtx, client, base, expectedPath, nil) |
| 526 | if readErr != nil { |
| 527 | return status, err |
| 528 | } |
| 529 | if observed.Revision != bundle.Revision || observed.Model != remoteRef { |
| 530 | return observed, err |
| 531 | } |
| 532 | status = observed |
| 533 | } |
| 534 | } |
| 535 | if status.Revision != bundle.Revision || status.Model != remoteRef { |
| 536 | return status, fmt.Errorf("remote model settings acknowledgement did not match the submitted snapshot") |
| 537 | } |
| 538 | return status, nil |
| 539 | } |
| 540 |