| 1 | package stats |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "path/filepath" |
| 6 | "strings" |
| 7 | "sync" |
| 8 | "sync/atomic" |
| 9 | |
| 10 | "reasonix/internal/config" |
| 11 | "reasonix/internal/usagecatalog" |
| 12 | ) |
| 13 | |
| 14 | type usageManager struct { |
| 15 | catalog atomic.Pointer[usagecatalog.Catalog] |
| 16 | mu sync.Mutex |
| 17 | generation uint64 |
| 18 | opening bool |
| 19 | openDone chan struct{} |
| 20 | openCancel context.CancelFunc |
| 21 | open func(context.Context, string) (*usagecatalog.Catalog, error) |
| 22 | } |
| 23 | |
| 24 | var usageManagers = struct { |
| 25 | sync.Mutex |
| 26 | byDir map[string]*usageManager |
| 27 | }{byDir: map[string]*usageManager{}} |
| 28 | |
| 29 | func managerForUsage(dir string) *usageManager { |
| 30 | dir = strings.TrimSpace(dir) |
| 31 | if dir == "" || !sameUsageDirectory(dir, config.StatsDir()) { |
| 32 | return nil |
| 33 | } |
| 34 | usageManagers.Lock() |
| 35 | manager := usageManagers.byDir[dir] |
| 36 | if manager == nil { |
| 37 | manager = &usageManager{} |
| 38 | usageManagers.byDir[dir] = manager |
| 39 | } |
| 40 | usageManagers.Unlock() |
| 41 | manager.start(dir) |
| 42 | return manager |
| 43 | } |
| 44 | |
| 45 | func (m *usageManager) start(dir string) { |
| 46 | m.mu.Lock() |
| 47 | if m.catalog.Load() != nil || m.opening { |
| 48 | m.mu.Unlock() |
| 49 | return |
| 50 | } |
| 51 | m.generation++ |
| 52 | generation := m.generation |
| 53 | ctx, cancel := context.WithCancel(context.Background()) |
| 54 | done := make(chan struct{}) |
| 55 | m.opening, m.openDone, m.openCancel = true, done, cancel |
| 56 | openCatalog := m.open |
| 57 | if openCatalog == nil { |
| 58 | openCatalog = usagecatalog.Open |
| 59 | } |
| 60 | m.mu.Unlock() |
| 61 | go m.openGeneration(ctx, generation, done, dir, openCatalog) |
| 62 | } |
| 63 | |
| 64 | func (m *usageManager) openGeneration(ctx context.Context, generation uint64, done chan struct{}, dir string, openCatalog func(context.Context, string) (*usagecatalog.Catalog, error)) { |
| 65 | catalog, err := openCatalog(ctx, "") |
| 66 | if err == nil { |
| 67 | _ = catalog.ReconcileDir(ctx, dir) |
| 68 | } |
| 69 | m.mu.Lock() |
| 70 | stale := generation != m.generation || ctx.Err() != nil |
| 71 | if err == nil && !stale { |
| 72 | m.catalog.Store(catalog) |
| 73 | } |
| 74 | m.mu.Unlock() |
| 75 | if catalog != nil && (err != nil || stale) { |
| 76 | _ = catalog.Close(context.Background()) |
| 77 | } |
| 78 | m.mu.Lock() |
| 79 | if m.openDone == done { |
| 80 | m.opening = false |
| 81 | m.openDone = nil |
| 82 | m.openCancel = nil |
| 83 | } |
| 84 | close(done) |
| 85 | m.mu.Unlock() |
| 86 | } |
| 87 | |
| 88 | func (m *usageManager) close(ctx context.Context) error { |
| 89 | m.mu.Lock() |
| 90 | m.generation++ |
| 91 | if m.openCancel != nil { |
| 92 | m.openCancel() |
| 93 | } |
| 94 | done := m.openDone |
| 95 | catalog := m.catalog.Swap(nil) |
| 96 | m.mu.Unlock() |
| 97 | var closeErr error |
| 98 | if catalog != nil { |
| 99 | closeErr = catalog.Close(ctx) |
| 100 | } |
| 101 | if done != nil { |
| 102 | select { |
| 103 | case <-done: |
| 104 | case <-ctx.Done(): |
| 105 | if closeErr == nil { |
| 106 | closeErr = ctx.Err() |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | return closeErr |
| 111 | } |
| 112 | |
| 113 | // The single usage catalog projects the single authoritative Reasonix stats |
| 114 | // directory. Test/custom writers retain the exact JSONL implementation rather |
| 115 | // than accidentally sharing rollups with the production cache database. |
| 116 | func sameUsageDirectory(left, right string) bool { |
| 117 | leftAbs, leftErr := filepath.Abs(filepath.Clean(left)) |
| 118 | rightAbs, rightErr := filepath.Abs(filepath.Clean(right)) |
| 119 | return leftErr == nil && rightErr == nil && leftAbs == rightAbs |
| 120 | } |
| 121 | |
| 122 | // existingUsageManager returns an already-started projection without creating |
| 123 | // background work. Read-only commands, Query and Flush use this path so merely |
| 124 | // inspecting authoritative JSONL cannot make the process outlive the command. |
| 125 | func existingUsageManager(dir string) *usageManager { |
| 126 | dir = strings.TrimSpace(dir) |
| 127 | if dir == "" { |
| 128 | return nil |
| 129 | } |
| 130 | usageManagers.Lock() |
| 131 | defer usageManagers.Unlock() |
| 132 | return usageManagers.byDir[dir] |
| 133 | } |
| 134 | |
| 135 | // CloseUsageCatalogs closes every process-local usage projection. Desktop |
| 136 | // shutdown and test isolation call this so Windows can delete TempDir cache |
| 137 | // files that would otherwise stay locked by open SQLite handles. |
| 138 | func CloseUsageCatalogs(ctx context.Context) error { |
| 139 | usageManagers.Lock() |
| 140 | managers := make([]*usageManager, 0, len(usageManagers.byDir)) |
| 141 | for dir, manager := range usageManagers.byDir { |
| 142 | managers = append(managers, manager) |
| 143 | delete(usageManagers.byDir, dir) |
| 144 | } |
| 145 | usageManagers.Unlock() |
| 146 | var first error |
| 147 | for _, manager := range managers { |
| 148 | if err := manager.close(ctx); err != nil && first == nil { |
| 149 | first = err |
| 150 | } |
| 151 | } |
| 152 | return first |
| 153 | } |
| 154 | |
| 155 | func usageEntry(day string, r record) usagecatalog.Entry { |
| 156 | turns := 0 |
| 157 | if r.Turn { |
| 158 | turns = 1 |
| 159 | } |
| 160 | return usagecatalog.Entry{Day: day, Source: r.Source, ModelRef: r.ModelRef, Provider: providerOf(r.ModelRef), |
| 161 | Prompt: r.Prompt, Completion: r.Completion, Reasoning: r.Reasoning, CacheHit: r.CacheHit, |
| 162 | CacheMiss: r.CacheMiss, Total: r.Total, Requests: r.Requests, Turns: turns} |
| 163 | } |
| 164 |