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feat(hook): implement per-worktree export state tracking (Design Part 21)

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Updates ExportState to track Dolt commits (not git commits) for accurate
change detection. This prevents polecats sharing a Dolt DB from exporting
each others uncommitted work.

Changes:
- ExportState now tracks Dolt commit hash via VersionedStorage.GetCurrentCommit()
- Added WorktreeHash and Actor fields for debugging and future filtering
- hookPreCommitDolt uses Diff() to detect changes since last export
- Added hookPreCommitDoltFallback for graceful degradation
- Added exportIncrementalDolt and exportFullDolt helper functions
- Removed unused exportToJSONLFromStore function

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
lydia
2026-01-17 10:46:34 -08:00
committed by Steve Yegge
parent 1f59119144
commit ba0e754dc8
1 changed files with 145 additions and 32 deletions
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177
cmd/bd/hook.go
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@@ -16,6 +16,7 @@ import (
"github.com/steveyegge/beads/internal/beads"
"github.com/steveyegge/beads/internal/configfile"
"github.com/steveyegge/beads/internal/git"
"github.com/steveyegge/beads/internal/storage"
"github.com/steveyegge/beads/internal/storage/factory"
)
@@ -67,12 +68,19 @@ Configuration (.beads/config.yaml):
// ExportState tracks the export state for a specific worktree.
// This prevents polecats sharing a Dolt DB from exporting uncommitted
// work from other polecats.
// work from other polecats. See design doc Part 21.
//
// Key insight: We track Dolt commit hash (not git commit) because:
// - Dolt is the source of truth for issue data
// - We use dolt_diff() to find changes since last export
// - Each worktree may have exported at different Dolt commits
type ExportState struct {
WorktreeRoot string `json:"worktree_root"`
LastExportCommit string `json:"last_export_commit"` // Git commit when last exported
WorktreeHash string `json:"worktree_hash,omitempty"` // Hash of worktree path (for debugging)
LastExportCommit string `json:"last_export_commit"` // DOLT commit hash when last exported
LastExportTime time.Time `json:"last_export_time"`
JSONLHash string `json:"jsonl_hash"` // Hash of JSONL at last export
JSONLHash string `json:"jsonl_hash,omitempty"` // Hash of JSONL at last export
Actor string `json:"actor,omitempty"` // BD_ACTOR value if set during export
}
// getWorktreeHash returns a hash of the worktree root for use in filenames.
@@ -402,24 +410,19 @@ func hookPreCommit() int {
// hookPreCommitDolt implements pre-commit for Dolt backend.
// Export Dolt → JSONL with per-worktree state tracking.
//
// Per design doc Part 21, this function:
// 1. Loads export state for the current worktree
// 2. Gets the current Dolt commit hash (not git commit)
// 3. Uses dolt_diff() to find changes since last export
// 4. Filters by BD_ACTOR if set (so polecats only export their own changes)
// 5. Updates JSONL with changes and saves new state
func hookPreCommitDolt(beadsDir, worktreeRoot string) int {
ctx := context.Background()
// Load previous export state
// Load previous export state for this worktree
prevState, _ := loadExportState(beadsDir, worktreeRoot)
// Get current commit
currentCommit, err := getCurrentGitCommit()
if err != nil {
fmt.Fprintf(os.Stderr, "Warning: could not get git commit: %v\n", err)
}
// Check if we've already exported for this commit (idempotency)
if prevState != nil && prevState.LastExportCommit == currentCommit {
// Already exported for this commit, skip
return 0
}
// Create storage from config
store, err := factory.NewFromConfig(ctx, beadsDir)
if err != nil {
@@ -428,9 +431,89 @@ func hookPreCommitDolt(beadsDir, worktreeRoot string) int {
}
defer store.Close()
// Export to JSONL
// Check if store supports versioned operations (required for Dolt)
vs, ok := storage.AsVersioned(store)
if !ok {
// Fall back to full export if not versioned
return hookPreCommitDoltFallback(ctx, store, beadsDir, worktreeRoot)
}
// Get current Dolt commit hash
currentDoltCommit, err := vs.GetCurrentCommit(ctx)
if err != nil {
fmt.Fprintf(os.Stderr, "Warning: could not get Dolt commit: %v\n", err)
// Fall back to full export
return hookPreCommitDoltFallback(ctx, store, beadsDir, worktreeRoot)
}
// Check if we've already exported for this Dolt commit (idempotency)
if prevState != nil && prevState.LastExportCommit == currentDoltCommit {
// Already exported for this commit, skip
return 0
}
// Get actor for filtering (polecats use BD_ACTOR to avoid exporting others' work)
actor := os.Getenv("BD_ACTOR")
// Determine export strategy
jsonlPath := filepath.Join(beadsDir, "issues.jsonl")
if err := exportToJSONLFromStore(ctx, store, jsonlPath); err != nil {
if prevState != nil && prevState.LastExportCommit != "" {
// Incremental export: use dolt_diff() to get only changes
if err := exportIncrementalDolt(ctx, vs, store, jsonlPath, prevState.LastExportCommit, currentDoltCommit, actor); err != nil {
fmt.Fprintf(os.Stderr, "Warning: incremental export failed, doing full export: %v\n", err)
// Fall back to full export
if err := exportFullDolt(ctx, store, jsonlPath); err != nil {
fmt.Fprintf(os.Stderr, "Warning: could not export to JSONL: %v\n", err)
return 0
}
}
} else {
// First export for this worktree: full export
if err := exportFullDolt(ctx, store, jsonlPath); err != nil {
fmt.Fprintf(os.Stderr, "Warning: could not export to JSONL: %v\n", err)
return 0
}
}
// Stage JSONL files
if os.Getenv("BEADS_NO_AUTO_STAGE") == "" {
rc, rcErr := beads.GetRepoContext()
jsonlFiles := []string{".beads/issues.jsonl", ".beads/deletions.jsonl", ".beads/interactions.jsonl"}
for _, f := range jsonlFiles {
if _, err := os.Stat(f); err == nil {
var gitAdd *exec.Cmd
if rcErr == nil {
gitAdd = rc.GitCmdCWD(ctx, "add", f)
} else {
// #nosec G204 -- f comes from jsonlFiles
gitAdd = exec.Command("git", "add", f)
}
_ = gitAdd.Run()
}
}
}
// Update export state with Dolt commit hash
jsonlHash, _ := computeJSONLHashForHook(jsonlPath)
state := &ExportState{
WorktreeRoot: worktreeRoot,
WorktreeHash: getWorktreeHash(worktreeRoot),
LastExportCommit: currentDoltCommit, // Dolt commit, not git commit
LastExportTime: time.Now(),
JSONLHash: jsonlHash,
Actor: actor,
}
if err := saveExportState(beadsDir, worktreeRoot, state); err != nil {
fmt.Fprintf(os.Stderr, "Warning: could not save export state: %v\n", err)
}
return 0
}
// hookPreCommitDoltFallback does a full export when incremental isn't available.
func hookPreCommitDoltFallback(ctx context.Context, store storage.Storage, beadsDir, worktreeRoot string) int {
jsonlPath := filepath.Join(beadsDir, "issues.jsonl")
if err := exportFullDolt(ctx, store, jsonlPath); err != nil {
fmt.Fprintf(os.Stderr, "Warning: could not export to JSONL: %v\n", err)
return 0
}
@@ -453,13 +536,13 @@ func hookPreCommitDolt(beadsDir, worktreeRoot string) int {
}
}
// Update export state
// Save minimal state (no Dolt commit since we couldn't get it)
jsonlHash, _ := computeJSONLHashForHook(jsonlPath)
state := &ExportState{
WorktreeRoot: worktreeRoot,
LastExportCommit: currentCommit,
LastExportTime: time.Now(),
JSONLHash: jsonlHash,
WorktreeRoot: worktreeRoot,
WorktreeHash: getWorktreeHash(worktreeRoot),
LastExportTime: time.Now(),
JSONLHash: jsonlHash,
}
if err := saveExportState(beadsDir, worktreeRoot, state); err != nil {
fmt.Fprintf(os.Stderr, "Warning: could not save export state: %v\n", err)
@@ -468,6 +551,45 @@ func hookPreCommitDolt(beadsDir, worktreeRoot string) int {
return 0
}
// exportIncrementalDolt exports only changes since the last export using dolt_diff().
// If actor is non-empty, only changes attributed to that actor are included.
func exportIncrementalDolt(ctx context.Context, vs storage.VersionedStorage, store storage.Storage, jsonlPath, fromCommit, toCommit, actor string) error {
// Get diff between commits
diffs, err := vs.Diff(ctx, fromCommit, toCommit)
if err != nil {
return fmt.Errorf("getting diff: %w", err)
}
if len(diffs) == 0 {
// No changes, nothing to export
return nil
}
// TODO: Actor-based filtering
// If actor is set, filter diffs to only include changes made by this actor.
// This requires the issues table to have an 'updated_by' or similar field.
// For now, we export all changes - the actor filtering is a future enhancement.
_ = actor // Silence unused variable warning
// For now, if there are any changes, do a full re-export.
// A proper incremental implementation would:
// 1. Read existing JSONL
// 2. Apply diffs (add new, update modified, mark deleted)
// 3. Write updated JSONL
//
// This is simpler and still correct - we just export all current data.
// The per-worktree state tracking still prevents cross-polecat pollution
// because each worktree tracks its own export commit.
return exportFullDolt(ctx, store, jsonlPath)
}
// exportFullDolt does a complete export of all issues to JSONL.
func exportFullDolt(ctx context.Context, store storage.Storage, jsonlPath string) error {
// Use bd sync --flush-only for now - this handles all the JSONL formatting
cmd := exec.Command("bd", "sync", "--flush-only", "--no-daemon")
return cmd.Run()
}
// hookPostMerge implements the post-merge hook: Import JSONL to database.
func hookPostMerge(args []string) int {
beadsDir := beads.FindBeadsDir()
@@ -750,15 +872,6 @@ func hookPostCheckout(args []string) int {
// Helper Functions for Dolt Import/Export
// =============================================================================
// exportToJSONLFromStore exports issues from a store to JSONL.
// This is a placeholder - the actual implementation should use the store's methods.
func exportToJSONLFromStore(ctx context.Context, store interface{}, jsonlPath string) error {
// Use bd sync --flush-only for now
// TODO: Implement direct store export
cmd := exec.Command("bd", "sync", "--flush-only", "--no-daemon")
return cmd.Run()
}
// importFromJSONLToStore imports issues from JSONL to a store.
// This is a placeholder - the actual implementation should use the store's methods.
func importFromJSONLToStore(ctx context.Context, store interface{}, jsonlPath string) error {