| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "log/slog" |
| 6 | "os" |
| 7 | "sort" |
| 8 | "time" |
| 9 | |
| 10 | "reasonix/internal/agent" |
| 11 | "reasonix/internal/config" |
| 12 | "reasonix/internal/control" |
| 13 | "reasonix/internal/sessioncatalog" |
| 14 | ) |
| 15 | |
| 16 | // Recovery-copy count sweep (#8525/#8750/#9109). Catalog v4 folds recovery |
| 17 | // lineages into one ordinary list row, so copies multiply on disk even though |
| 18 | // the sidebar shows one conversation. Once a lineage piles up |
| 19 | // recoveryCopySweepThreshold or more covered copies under one root, the sweep |
| 20 | // keeps the newest recoveryCopySweepKeep and moves the rest to the recoverable |
| 21 | // session trash (never hard-delete; restore via History). Only recovery_copy=1 |
| 22 | // members qualify; coverage is re-proven under removal guards before every |
| 23 | // move, and diverged copies (unique content) are never auto-swept. The sweep |
| 24 | // runs from existing reconcile hooks and is gated by |
| 25 | // recovery_cleanup.auto_enabled (default on). |
| 26 | const ( |
| 27 | recoveryCopySweepThreshold = 3 |
| 28 | recoveryCopySweepKeep = 1 |
| 29 | ) |
| 30 | |
| 31 | // sweepExcessRecoveryCopies runs the count sweep for one reconciled directory. |
| 32 | func (a *App) sweepExcessRecoveryCopies(catalog *sessioncatalog.Catalog, target sessioncatalog.DirectoryTarget) { |
| 33 | if !config.RecoveryCopyAutoCleanupEnabled() { |
| 34 | return |
| 35 | } |
| 36 | a.sweepExcessRecoveryCopiesIn(catalog, target, time.Now(), agent.RecoveryGCStartupGracePeriod) |
| 37 | } |
| 38 | |
| 39 | func (a *App) sweepExcessRecoveryCopiesIn(catalog *sessioncatalog.Catalog, target sessioncatalog.DirectoryTarget, now time.Time, grace time.Duration) int { |
| 40 | if a == nil || catalog == nil || a.shuttingDown.Load() { |
| 41 | return 0 |
| 42 | } |
| 43 | ctx, cancel := context.WithTimeout(a.bootContext(), sessionCatalogReadTimeout) |
| 44 | groups, err := catalog.ListRecoveryGroups(ctx, target.Path) |
| 45 | cancel() |
| 46 | if err != nil { |
| 47 | slog.Warn("desktop: list recovery lineages for copy sweep", "err", err) |
| 48 | return 0 |
| 49 | } |
| 50 | moved := 0 |
| 51 | for _, group := range groups { |
| 52 | moved += a.sweepRecoveryGroupCopies(group, now, grace) |
| 53 | } |
| 54 | if moved > 0 { |
| 55 | slog.Info("desktop: moved excess recovery copies to the session trash", "count", moved) |
| 56 | } |
| 57 | return moved |
| 58 | } |
| 59 | |
| 60 | func (a *App) sweepRecoveryGroupCopies(group sessioncatalog.RecoveryGroup, now time.Time, grace time.Duration) int { |
| 61 | copies := make([]sessioncatalog.SessionRecord, 0, len(group.Members)) |
| 62 | for _, member := range group.Members { |
| 63 | // Only proven-covered copies are redundant; diverged leaves and the |
| 64 | // canonical representative always stay. |
| 65 | if member.RecoveryCopy && member.Path != group.CanonicalPath { |
| 66 | copies = append(copies, member) |
| 67 | } |
| 68 | } |
| 69 | if len(copies) < recoveryCopySweepThreshold { |
| 70 | return 0 |
| 71 | } |
| 72 | sort.SliceStable(copies, func(i, j int) bool { |
| 73 | if copies[i].LastActivityAt != copies[j].LastActivityAt { |
| 74 | return copies[i].LastActivityAt > copies[j].LastActivityAt |
| 75 | } |
| 76 | return copies[i].Path < copies[j].Path |
| 77 | }) |
| 78 | for _, kept := range copies[:recoveryCopySweepKeep] { |
| 79 | recordRecoveryCleanupOutcome(group, kept.Path, "cleanup_kept") |
| 80 | } |
| 81 | moved := 0 |
| 82 | for _, copy := range copies[recoveryCopySweepKeep:] { |
| 83 | if grace > 0 { |
| 84 | // A fresh copy may still be part of an active conflict flow. |
| 85 | info, err := os.Stat(copy.Path) |
| 86 | if err != nil || now.Sub(info.ModTime()) < grace { |
| 87 | continue |
| 88 | } |
| 89 | } |
| 90 | if a.trashSweptRecoveryCopy(group, copy.Path) { |
| 91 | moved++ |
| 92 | } |
| 93 | } |
| 94 | return moved |
| 95 | } |
| 96 | |
| 97 | // trashSweptRecoveryCopy moves one redundant copy to the recoverable session |
| 98 | // trash under the same guards the explicit UI delete uses. Any coverage or |
| 99 | // liveness doubt skips the copy untouched; it can be retried by a later sweep. |
| 100 | func (a *App) trashSweptRecoveryCopy(group sessioncatalog.RecoveryGroup, path string) bool { |
| 101 | defer a.lockRuntimeMutation("recovery-copy-sweep")() |
| 102 | a.sessionRemovalMu.Lock() |
| 103 | defer a.sessionRemovalMu.Unlock() |
| 104 | if a.sessionOpenInAnyTab(path) || agent.SessionLeaseHeld(path) { |
| 105 | recordRecoveryCleanupOutcome(group, path, "cleanup_skipped_in_use") |
| 106 | return false |
| 107 | } |
| 108 | var err error |
| 109 | if group.CanonicalPath != "" { |
| 110 | err = agent.TrashRecoveryBranchCoveredBy(path, group.CanonicalPath, group.Directory) |
| 111 | } else { |
| 112 | err = agent.TrashCoveredRecoveryBranch(path, group.Directory) |
| 113 | } |
| 114 | if err != nil { |
| 115 | recordRecoveryCleanupOutcome(group, path, "cleanup_revalidation_failed") |
| 116 | slog.Debug("desktop: sweep skipped recovery copy", "reason", err) |
| 117 | return false |
| 118 | } |
| 119 | recordRecoveryCleanupOutcome(group, path, "cleanup_moved") |
| 120 | a.removeSessionCatalogPath(path, "recovery_copy_sweep") |
| 121 | slog.Info("desktop: swept excess recovery copy to trash") |
| 122 | return true |
| 123 | } |
| 124 | |
| 125 | func recordRecoveryCleanupOutcome(group sessioncatalog.RecoveryGroup, path, outcome string) { |
| 126 | anchor := group.CanonicalPath |
| 127 | if anchor == "" { |
| 128 | anchor = path |
| 129 | } |
| 130 | control.RecordRecoveryLifecycle(anchor, outcome) |
| 131 | } |
| 132 |