| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "errors" |
| 5 | "fmt" |
| 6 | "log/slog" |
| 7 | "strings" |
| 8 | |
| 9 | "reasonix/internal/config" |
| 10 | "reasonix/internal/control" |
| 11 | "reasonix/internal/extension/providerext" |
| 12 | ) |
| 13 | |
| 14 | var errModelSettingsSuperseded = errors.New("model settings changed while building the session") |
| 15 | |
| 16 | type tabModelApplicationState struct { |
| 17 | startupRetry bool |
| 18 | failure *modelSettingsApplyFailure |
| 19 | } |
| 20 | |
| 21 | type modelSettingsApplyFailure struct { |
| 22 | controller control.SessionAPI |
| 23 | revision string |
| 24 | message string |
| 25 | } |
| 26 | |
| 27 | type modelSettingsSnapshot interface { |
| 28 | ModelSettingsState() (applied, desired string, err error) |
| 29 | } |
| 30 | |
| 31 | func modelSettingsNeedApply(ctrl control.SessionAPI) (bool, error) { |
| 32 | snapshot, ok := ctrl.(modelSettingsSnapshot) |
| 33 | if !ok { |
| 34 | return false, nil |
| 35 | } |
| 36 | applied, desired, err := snapshot.ModelSettingsState() |
| 37 | return applied != desired, err |
| 38 | } |
| 39 | |
| 40 | // Model writes own only persisted configuration. Runtime admission applies the |
| 41 | // latest effective snapshot before accepting the next run, including when the |
| 42 | // write came from another process. Saving never requires a visible session. |
| 43 | func (a *App) applyModelConfigChange(mutate func(*config.Config) error) error { |
| 44 | _, err := a.applyModelConfigChangeWithWarning("model settings", mutate) |
| 45 | return err |
| 46 | } |
| 47 | |
| 48 | func (a *App) applyModelConfigChangeWithWarning(setting string, mutate func(*config.Config) error) (string, error) { |
| 49 | return a.applyModelConfigChangeWithSave(setting, mutate, nil) |
| 50 | } |
| 51 | |
| 52 | func (a *App) applyModelConfigChangeWithSave(setting string, mutate func(*config.Config) error, save func(*config.Config, string) error) (string, error) { |
| 53 | err := func() error { |
| 54 | unlock := config.LockUserConfigEdits() |
| 55 | defer unlock() |
| 56 | unlockCredentials, err := config.LockUserCredentialEdits() |
| 57 | if err != nil { |
| 58 | return err |
| 59 | } |
| 60 | defer unlockCredentials() |
| 61 | cfg, path, err := a.loadDesktopUserConfigForEdit() |
| 62 | if err != nil { |
| 63 | return err |
| 64 | } |
| 65 | baseline := cfg.ModelSettingsBaseline() |
| 66 | defer cfg.CleanupStagedModelCredentialsLocked(path) |
| 67 | if err := mutate(cfg); err != nil { |
| 68 | return err |
| 69 | } |
| 70 | if save == nil { |
| 71 | return cfg.SaveModelSettingsTo(path, baseline) |
| 72 | } |
| 73 | return save(cfg, path) |
| 74 | }() |
| 75 | if err != nil { |
| 76 | return "", err |
| 77 | } |
| 78 | a.modelSettingsSaved(setting) |
| 79 | return "", nil |
| 80 | } |
| 81 | |
| 82 | func (a *App) modelSettingsSaved(setting string) { |
| 83 | a.invalidateAuxiliaryProviderOperations() |
| 84 | a.mu.RLock() |
| 85 | count, active := len(a.tabs), a.activeTabID != "" |
| 86 | var retry []*WorkspaceTab |
| 87 | var apply []string |
| 88 | for _, tab := range a.tabs { |
| 89 | if tab != nil && tab.Ctrl == nil && tab.modelApplication.startupRetry { |
| 90 | retry = append(retry, tab) |
| 91 | } |
| 92 | if tab != nil && tab.Ctrl != nil { |
| 93 | apply = append(apply, tab.ID) |
| 94 | } |
| 95 | } |
| 96 | a.mu.RUnlock() |
| 97 | slog.Debug("model settings persisted", "setting", setting, "visibleSessions", count, "hasActiveSession", active) |
| 98 | a.refreshActiveTabMetaExtras() |
| 99 | for _, id := range apply { |
| 100 | a.scheduleDeferredRebuild(id, "saved model settings") |
| 101 | } |
| 102 | if a.ctx != nil { |
| 103 | for _, tab := range retry { |
| 104 | a.scheduleDeferredStartupBuild(tab.ID) |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | // refreshTabModelSettings runs outside the turn admission read lock. The |
| 110 | // existing rebuild owner protects build/swap; no second scheduling authority. |
| 111 | func (a *App) refreshTabModelSettings(tab *WorkspaceTab) error { |
| 112 | a.runtimeRebuildMu.Lock() |
| 113 | defer a.runtimeRebuildMu.Unlock() |
| 114 | tab.turnStartMu.Lock() |
| 115 | defer tab.turnStartMu.Unlock() |
| 116 | for { |
| 117 | if err := a.reqCtx().Err(); err != nil { |
| 118 | return err |
| 119 | } |
| 120 | current := a.controllerForTab(tab) |
| 121 | snapshot, ok := current.(modelSettingsSnapshot) |
| 122 | if !ok { |
| 123 | return nil |
| 124 | } |
| 125 | applied, attempted, err := snapshot.ModelSettingsState() |
| 126 | if err != nil { |
| 127 | return fmt.Errorf("read saved model settings: %w", err) |
| 128 | } |
| 129 | if applied == attempted { |
| 130 | return nil |
| 131 | } |
| 132 | a.mu.RLock() |
| 133 | failure := tab.modelApplication.failure |
| 134 | a.mu.RUnlock() |
| 135 | if failure != nil && failure.controller == current && failure.revision == attempted { |
| 136 | return newModelApplicationError(current, errors.New(failure.message)) |
| 137 | } |
| 138 | if err := a.rebuildSettingTurnLocked("saved model settings", tab, false, true); err != nil { |
| 139 | if errors.Is(err, errModelSettingsSuperseded) { |
| 140 | continue |
| 141 | } |
| 142 | var busy *rebuildBusyError |
| 143 | if errors.As(err, &busy) { |
| 144 | a.scheduleDeferredRebuild(tab.ID, "saved model settings") |
| 145 | } |
| 146 | if current != nil && !errors.As(err, &busy) { |
| 147 | a.mu.Lock() |
| 148 | if a.ownsRuntimeTabLocked(tab) && tab.Ctrl == current { |
| 149 | tab.modelApplication.failure = &modelSettingsApplyFailure{current, attempted, modelSettingsIssue("apply_failed", err).Message} |
| 150 | } |
| 151 | a.mu.Unlock() |
| 152 | } |
| 153 | return newModelApplicationError(current, err) |
| 154 | } |
| 155 | return nil |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | // Preserve a selected model while it is still accessible; a removed selection |
| 160 | // may only fall back to an explicitly available and configured Desktop model. |
| 161 | func resolveModelSettingsRuntime(c *config.Config, model string) (string, error) { |
| 162 | if providerext.PluginRefOwner(model) != "" { |
| 163 | return model, nil |
| 164 | } |
| 165 | if p, ok := c.ResolveModel(model); ok && modelProviderAccessAllowed(c.Desktop.ProviderAccess, p.Name) && p.Configured() { |
| 166 | return p.Name + "/" + p.Model, nil |
| 167 | } |
| 168 | if ref := resolveNewSessionModel(c); strings.TrimSpace(ref) != "" { |
| 169 | if p, ok := c.ResolveModel(ref); ok && modelProviderAccessAllowed(c.Desktop.ProviderAccess, p.Name) && p.Configured() { |
| 170 | return p.Name + "/" + p.Model, nil |
| 171 | } |
| 172 | } |
| 173 | return "", fmt.Errorf("no configured model is available; choose a model in Settings before starting another run") |
| 174 | } |
| 175 | |
| 176 | func (a *App) sessionPathForSettingsRebuild(tab *WorkspaceTab) string { |
| 177 | if path := a.reconciledSessionPathForTab(tab); path != "" { |
| 178 | return path |
| 179 | } |
| 180 | return a.currentSessionPathFor(tab) |
| 181 | } |
| 182 | |
| 183 | func validateModelSettingsReplacement(ctrl, previous control.SessionAPI) error { |
| 184 | if stale, err := modelSettingsNeedApply(ctrl); err != nil || stale { |
| 185 | if ctrl != previous { |
| 186 | discardReplacementController(ctrl, previous) |
| 187 | } |
| 188 | if err != nil { |
| 189 | return err |
| 190 | } |
| 191 | return errModelSettingsSuperseded |
| 192 | } |
| 193 | return nil |
| 194 | } |
| 195 |