| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | |
| 7 | "reasonix/internal/boot" |
| 8 | "reasonix/internal/control" |
| 9 | "reasonix/internal/session" |
| 10 | ) |
| 11 | |
| 12 | var errTabControllerExtensionsChanged = errors.New("desktop: controller extensions changed during build") |
| 13 | |
| 14 | // buildTabControllerBoot is a thin wrapper around boot.Build so the large |
| 15 | // controller assembly path can stay under function-size / complexity budgets. |
| 16 | func (a *App) buildTabControllerBoot(ctx context.Context, opts boot.Options) (control.SessionAPI, error) { |
| 17 | if opts.SessionService == nil { |
| 18 | opts.SessionService = a.desktopSessionService(opts.SessionDir) |
| 19 | } |
| 20 | if opts.OnSessionRotation == nil { |
| 21 | opts.OnSessionRotation = a.prepareDesktopSessionRotation |
| 22 | } |
| 23 | return boot.Build(ctx, opts) |
| 24 | } |
| 25 | |
| 26 | func desktopSessionRoot(sessionDir string) string { |
| 27 | return session.RootForLegacyDir(sessionDir) |
| 28 | } |
| 29 | |
| 30 | func (a *App) desktopSessionService(sessionDir string) *session.Service { |
| 31 | if a == nil { |
| 32 | return nil |
| 33 | } |
| 34 | a.sessionServicesMu.Lock() |
| 35 | defer a.sessionServicesMu.Unlock() |
| 36 | root := a.desktopSessions.root |
| 37 | // Zero-value Apps in narrow tests retain an isolated legacy-derived root; |
| 38 | // NewApp always supplies the production v5 root. |
| 39 | if root == "" { |
| 40 | root = desktopSessionRoot(sessionDir) |
| 41 | a.desktopSessions.root = root |
| 42 | } |
| 43 | if root == "" { |
| 44 | return nil |
| 45 | } |
| 46 | if a.sessionServices == nil { |
| 47 | a.sessionServices = map[string]*session.Service{} |
| 48 | } |
| 49 | for _, service := range a.sessionServices { |
| 50 | // There is deliberately one local service even when a caller still |
| 51 | // carries a project-local legacy sessionDir during the cutover. |
| 52 | if service != nil { |
| 53 | return service |
| 54 | } |
| 55 | } |
| 56 | if service := a.sessionServices[root]; service != nil { |
| 57 | return service |
| 58 | } |
| 59 | service, err := session.NewService("local", session.NewFilesystemPersistence(root)) |
| 60 | if err != nil { |
| 61 | return nil |
| 62 | } |
| 63 | a.sessionServices[root] = service |
| 64 | return service |
| 65 | } |
| 66 | |
| 67 | // buildTabControllerBootFenced keeps optimistic builds concurrent with each |
| 68 | // other but excludes live MCP mutation. The generation check happens after the |
| 69 | // gate so a build that loaded stale configuration never launches extensions. |
| 70 | func (a *App) buildTabControllerBootFenced(ctx context.Context, generation uint64, opts boot.Options) (control.SessionAPI, error) { |
| 71 | a.extensionBuildMu.RLock() |
| 72 | defer a.extensionBuildMu.RUnlock() |
| 73 | if a.currentExtensionGeneration() != generation { |
| 74 | return nil, errTabControllerExtensionsChanged |
| 75 | } |
| 76 | return a.buildTabControllerBoot(ctx, opts) |
| 77 | } |
| 78 | |
| 79 | // lockTabControllerPublication makes extension generation and project |
| 80 | // maintenance reservations part of the same publication admission. An MCP |
| 81 | // writer bumps the generation before releasing runtimeAdmissionMu, while a |
| 82 | // worktree mutation publishes its canonical reservation before releasing the |
| 83 | // write side, so neither stale registries nor a late project controller can be |
| 84 | // installed afterward. |
| 85 | func (a *App) lockTabControllerPublication(generation uint64, scope, workspaceRoot string) (func(), bool) { |
| 86 | a.runtimeAdmissionMu.RLock() |
| 87 | if a.currentExtensionGeneration() != generation { |
| 88 | a.runtimeAdmissionMu.RUnlock() |
| 89 | return nil, false |
| 90 | } |
| 91 | if scope != "project" { |
| 92 | return a.runtimeAdmissionMu.RUnlock, true |
| 93 | } |
| 94 | key := canonicalRuntimeRoot(workspaceRoot) |
| 95 | if key == "" || a.workspaceMergeReservedSnapshot(key) { |
| 96 | a.runtimeAdmissionMu.RUnlock() |
| 97 | return nil, false |
| 98 | } |
| 99 | return a.runtimeAdmissionMu.RUnlock, true |
| 100 | } |
| 101 | |
| 102 | func (a *App) handleTabControllerBootError( |
| 103 | tab *WorkspaceTab, |
| 104 | registration *sharedHostMCPRegistration, |
| 105 | rootKey string, |
| 106 | buildGeneration uint64, |
| 107 | wailsCtx context.Context, |
| 108 | err error, |
| 109 | ) bool { |
| 110 | if err == nil { |
| 111 | return false |
| 112 | } |
| 113 | registration.rollback() |
| 114 | if errors.Is(err, errTabControllerExtensionsChanged) { |
| 115 | a.abandonSupersededBuild(tab, nil, rootKey, "") |
| 116 | a.scheduleDeferredStartupBuild(tab.ID) |
| 117 | return true |
| 118 | } |
| 119 | a.mu.Lock() |
| 120 | if a.tabBuildSupersededLocked(tab, buildGeneration) { |
| 121 | a.mu.Unlock() |
| 122 | a.abandonSupersededBuild(tab, nil, rootKey, "") |
| 123 | return true |
| 124 | } |
| 125 | leaseHeld, save := a.markTabStartupFailureLocked(tab, err, keepStartupRestore) |
| 126 | hostKey := takeTabSharedHostKey(tab) |
| 127 | tab.releaseSessionLease() |
| 128 | a.mu.Unlock() |
| 129 | a.writeTabsSaveRequest(save) |
| 130 | if hostKey != "" { |
| 131 | a.releaseSharedHost(hostKey) |
| 132 | } |
| 133 | if leaseHeld { |
| 134 | a.scheduleDeferredStartupBuild(tab.ID) |
| 135 | } |
| 136 | a.emitReady(wailsCtx, tab.ID) |
| 137 | return true |
| 138 | } |
| 139 |