| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "path/filepath" |
| 7 | |
| 8 | "reasonix/internal/boot" |
| 9 | "reasonix/internal/control" |
| 10 | "reasonix/internal/session" |
| 11 | ) |
| 12 | |
| 13 | // Historical directories share one owner per root, just like canonical |
| 14 | // sessions. Repeated opens and rebuilds must not manufacture competing writers. |
| 15 | func (a *App) historicalSessionService(root string) (*session.Service, error) { |
| 16 | root = filepath.Clean(root) |
| 17 | a.sessionServicesMu.Lock() |
| 18 | defer a.sessionServicesMu.Unlock() |
| 19 | if existing := a.historicalSessionServices[root]; existing != nil { |
| 20 | return existing, nil |
| 21 | } |
| 22 | service, err := session.NewService(localDesktopHostID, session.NewFilesystemPersistence(root)) |
| 23 | if err != nil { |
| 24 | return nil, err |
| 25 | } |
| 26 | if a.historicalSessionServices == nil { |
| 27 | a.historicalSessionServices = map[string]*session.Service{} |
| 28 | } |
| 29 | a.historicalSessionServices[root] = service |
| 30 | service.UseIdlePool(&a.historyIdlePool) |
| 31 | service.ConfigureHistoryMaintenance(&a.historyMaintenance) |
| 32 | return service, nil |
| 33 | } |
| 34 | |
| 35 | var errTabControllerExtensionsChanged = errors.New("desktop: controller extensions changed during build") |
| 36 | |
| 37 | // buildTabControllerBoot is a thin wrapper around boot.Build so the large |
| 38 | // controller assembly path can stay under function-size / complexity budgets. |
| 39 | func (a *App) buildTabControllerBoot(ctx context.Context, opts boot.Options) (control.SessionAPI, error) { |
| 40 | if opts.NativeLegacySession && opts.SessionService == nil { |
| 41 | // A path-backed source may have a newer paired event store in its |
| 42 | // historical root. Keep that authority discoverable without importing |
| 43 | // either source into the current Desktop root. |
| 44 | var err error |
| 45 | opts.SessionService, err = a.historicalSessionService(desktopSessionRoot(opts.SessionDir)) |
| 46 | if err != nil { |
| 47 | return nil, err |
| 48 | } |
| 49 | } |
| 50 | if opts.SessionService == nil { |
| 51 | opts.SessionService = a.desktopSessionService(opts.SessionDir) |
| 52 | } |
| 53 | if opts.SessionCreateService == nil { |
| 54 | opts.SessionCreateService = a.desktopSessionService(opts.SessionDir) |
| 55 | } |
| 56 | if opts.OnSessionRotation == nil { |
| 57 | opts.OnSessionRotation = a.prepareDesktopSessionRotation |
| 58 | } |
| 59 | // Every controller on this host watches through one shared service, so a |
| 60 | // rebuild reuses the helper process instead of spawning another one. |
| 61 | if opts.SharedSkillWatchService == nil { |
| 62 | opts.SharedSkillWatchService = a.sharedSkillWatchService() |
| 63 | } |
| 64 | return boot.Build(ctx, opts) |
| 65 | } |
| 66 | |
| 67 | func desktopSessionRoot(sessionDir string) string { |
| 68 | return session.RootForLegacyDir(sessionDir) |
| 69 | } |
| 70 | |
| 71 | func (a *App) desktopSessionService(sessionDir string) *session.Service { |
| 72 | if a == nil { |
| 73 | return nil |
| 74 | } |
| 75 | a.sessionServicesMu.Lock() |
| 76 | defer a.sessionServicesMu.Unlock() |
| 77 | root := a.desktopSessions.root |
| 78 | // Zero-value Apps in narrow tests retain an isolated legacy-derived root; |
| 79 | // NewApp always supplies the production v5 root. |
| 80 | if root == "" { |
| 81 | root = desktopSessionRoot(sessionDir) |
| 82 | a.desktopSessions.root = root |
| 83 | } |
| 84 | if root == "" { |
| 85 | return nil |
| 86 | } |
| 87 | if a.sessionServices == nil { |
| 88 | a.sessionServices = map[string]*session.Service{} |
| 89 | } |
| 90 | for _, service := range a.sessionServices { |
| 91 | // There is deliberately one local service even when a caller still |
| 92 | // carries a project-local legacy sessionDir during the cutover. |
| 93 | if service != nil { |
| 94 | return service |
| 95 | } |
| 96 | } |
| 97 | if service := a.sessionServices[root]; service != nil { |
| 98 | return service |
| 99 | } |
| 100 | service, err := session.NewService("local", session.NewFilesystemPersistence(root)) |
| 101 | if err != nil { |
| 102 | return nil |
| 103 | } |
| 104 | a.sessionServices[root] = service |
| 105 | service.UseIdlePool(&a.historyIdlePool) |
| 106 | service.ConfigureHistoryMaintenance(&a.historyMaintenance) |
| 107 | return service |
| 108 | } |
| 109 | |
| 110 | // buildTabControllerBootFenced keeps optimistic builds concurrent with each |
| 111 | // other but excludes live MCP mutation. The generation check happens after the |
| 112 | // gate so a build that loaded stale configuration never launches extensions. |
| 113 | func (a *App) buildTabControllerBootFenced(ctx context.Context, generation uint64, opts boot.Options) (control.SessionAPI, error) { |
| 114 | a.extensionBuildMu.RLock() |
| 115 | defer a.extensionBuildMu.RUnlock() |
| 116 | if a.currentExtensionGeneration() != generation { |
| 117 | return nil, errTabControllerExtensionsChanged |
| 118 | } |
| 119 | return a.buildTabControllerBoot(ctx, opts) |
| 120 | } |
| 121 | |
| 122 | // lockTabControllerPublication makes extension generation and project |
| 123 | // maintenance reservations part of the same publication admission. An MCP |
| 124 | // writer bumps the generation before releasing runtimeAdmissionMu, while a |
| 125 | // worktree mutation publishes its canonical reservation before releasing the |
| 126 | // write side, so neither stale registries nor a late project controller can be |
| 127 | // installed afterward. |
| 128 | func (a *App) lockTabControllerPublication(generation uint64, scope, workspaceRoot string) (func(), bool) { |
| 129 | a.runtimeAdmissionMu.RLock() |
| 130 | if a.currentExtensionGeneration() != generation { |
| 131 | a.runtimeAdmissionMu.RUnlock() |
| 132 | return nil, false |
| 133 | } |
| 134 | if scope != "project" { |
| 135 | return a.runtimeAdmissionMu.RUnlock, true |
| 136 | } |
| 137 | key := canonicalRuntimeRoot(workspaceRoot) |
| 138 | if key == "" || a.workspaceMergeReservedSnapshot(key) { |
| 139 | a.runtimeAdmissionMu.RUnlock() |
| 140 | return nil, false |
| 141 | } |
| 142 | return a.runtimeAdmissionMu.RUnlock, true |
| 143 | } |
| 144 | |
| 145 | func (a *App) handleTabControllerBootError( |
| 146 | tab *WorkspaceTab, |
| 147 | registration *sharedHostMCPRegistration, |
| 148 | rootKey string, |
| 149 | buildGeneration uint64, |
| 150 | wailsCtx context.Context, |
| 151 | err error, |
| 152 | ) bool { |
| 153 | if err == nil { |
| 154 | return false |
| 155 | } |
| 156 | registration.rollback() |
| 157 | if errors.Is(err, errTabControllerExtensionsChanged) { |
| 158 | a.abandonSupersededBuild(tab, nil, rootKey, "") |
| 159 | a.scheduleDeferredStartupBuild(tab.ID) |
| 160 | return true |
| 161 | } |
| 162 | a.mu.Lock() |
| 163 | if a.tabBuildSupersededLocked(tab, buildGeneration) { |
| 164 | a.mu.Unlock() |
| 165 | a.abandonSupersededBuild(tab, nil, rootKey, "") |
| 166 | return true |
| 167 | } |
| 168 | leaseHeld, save := a.markTabStartupFailureLocked(tab, err, keepStartupRestore) |
| 169 | hostKey := takeTabSharedHostKey(tab) |
| 170 | tab.releaseSessionLease() |
| 171 | a.mu.Unlock() |
| 172 | a.writeTabsSaveRequest(save) |
| 173 | if hostKey != "" { |
| 174 | a.releaseSharedHost(hostKey) |
| 175 | } |
| 176 | if leaseHeld { |
| 177 | a.scheduleDeferredStartupBuild(tab.ID) |
| 178 | } |
| 179 | a.emitReady(wailsCtx, tab.ID) |
| 180 | return true |
| 181 | } |
| 182 |