ab5f507c66
Validates Gas Town multi-polecat concurrent access scenarios: - Concurrent issue creation (10 goroutines) - Same-issue update race conditions - Read-write mix (5 readers, 5 writers, 100 iterations) - Long transaction blocking - Branch-per-agent merge race - Worktree export isolation - Concurrent dependency operations - High contention stress test (20 workers, 1000 ops) Also fixes Status() to scan string status from dolt_status table. All tests pass with 100% success rate under contention. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
757 lines
21 KiB
Go
757 lines
21 KiB
Go
// Package dolt provides concurrency tests for embedded Dolt with multiple writers.
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//
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// These tests validate that Gas Town can safely run multiple polecats concurrently,
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// all writing to the same Dolt DB for creating issues, updating status,
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// adding dependencies, and closing issues.
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package dolt
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import (
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"context"
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"fmt"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"github.com/steveyegge/beads/internal/storage"
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"github.com/steveyegge/beads/internal/types"
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)
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// concurrentTestTimeout is longer than regular tests to allow for contention
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const concurrentTestTimeout = 60 * time.Second
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// concurrentTestContext returns a context with timeout for concurrent test operations
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func concurrentTestContext(t *testing.T) (context.Context, context.CancelFunc) {
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t.Helper()
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return context.WithTimeout(context.Background(), concurrentTestTimeout)
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}
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// =============================================================================
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// Test 1: Concurrent Issue Creation
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// 10 goroutines create issues simultaneously.
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// Verify: All 10 issues created, no duplicates, no errors
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// =============================================================================
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func TestConcurrentIssueCreation(t *testing.T) {
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store, cleanup := setupTestStore(t)
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defer cleanup()
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ctx, cancel := concurrentTestContext(t)
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defer cancel()
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const numGoroutines = 10
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var wg sync.WaitGroup
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errors := make(chan error, numGoroutines)
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createdIDs := make(chan string, numGoroutines)
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// Launch 10 goroutines to create issues simultaneously
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for i := 0; i < numGoroutines; i++ {
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wg.Add(1)
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go func(n int) {
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defer wg.Done()
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issue := &types.Issue{
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Title: fmt.Sprintf("Concurrent Issue %d", n),
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Description: fmt.Sprintf("Created by goroutine %d", n),
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Status: types.StatusOpen,
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Priority: 2,
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IssueType: types.TypeTask,
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}
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if err := store.CreateIssue(ctx, issue, fmt.Sprintf("worker-%d", n)); err != nil {
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errors <- fmt.Errorf("goroutine %d: %w", n, err)
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return
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}
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createdIDs <- issue.ID
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}(i)
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}
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wg.Wait()
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close(errors)
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close(createdIDs)
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// Check for errors
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var errCount int
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for err := range errors {
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t.Errorf("creation error: %v", err)
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errCount++
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}
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if errCount > 0 {
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t.Fatalf("%d goroutines failed to create issues", errCount)
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}
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// Collect and verify all IDs are unique
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ids := make(map[string]bool)
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for id := range createdIDs {
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if ids[id] {
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t.Errorf("duplicate issue ID: %s", id)
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}
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ids[id] = true
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}
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if len(ids) != numGoroutines {
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t.Errorf("expected %d unique IDs, got %d", numGoroutines, len(ids))
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}
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// Verify all issues can be retrieved
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for id := range ids {
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issue, err := store.GetIssue(ctx, id)
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if err != nil {
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t.Errorf("failed to get issue %s: %v", id, err)
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continue
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}
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if issue == nil {
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t.Errorf("issue %s not found", id)
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}
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}
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}
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// =============================================================================
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// Test 2: Same-Issue Update Race
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// 10 goroutines update the same issue simultaneously.
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// Verify: No errors, final state is consistent
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// =============================================================================
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func TestSameIssueUpdateRace(t *testing.T) {
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store, cleanup := setupTestStore(t)
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defer cleanup()
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ctx, cancel := concurrentTestContext(t)
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defer cancel()
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// Create the issue to be updated
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issue := &types.Issue{
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ID: "test-race-issue",
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Title: "Race Test Issue",
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Description: "Original description",
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Status: types.StatusOpen,
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Priority: 2,
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IssueType: types.TypeTask,
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}
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if err := store.CreateIssue(ctx, issue, "tester"); err != nil {
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t.Fatalf("failed to create issue: %v", err)
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}
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const numGoroutines = 10
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var wg sync.WaitGroup
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var successCount atomic.Int32
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var errorCount atomic.Int32
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// Launch 10 goroutines to update the same issue
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for i := 0; i < numGoroutines; i++ {
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wg.Add(1)
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go func(n int) {
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defer wg.Done()
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updates := map[string]interface{}{
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"description": fmt.Sprintf("Updated by goroutine %d", n),
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"priority": (n % 4) + 1, // Keep priority in valid range 1-4
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}
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if err := store.UpdateIssue(ctx, issue.ID, updates, fmt.Sprintf("worker-%d", n)); err != nil {
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t.Logf("goroutine %d update error (may be expected): %v", n, err)
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errorCount.Add(1)
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return
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}
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successCount.Add(1)
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}(i)
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}
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wg.Wait()
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// At least some updates should succeed
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if successCount.Load() == 0 {
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t.Error("no updates succeeded - expected at least one to complete")
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}
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t.Logf("Update results: %d succeeded, %d failed", successCount.Load(), errorCount.Load())
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// Verify final state is consistent (can be read without error)
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retrieved, err := store.GetIssue(ctx, issue.ID)
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if err != nil {
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t.Fatalf("failed to get issue after updates: %v", err)
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}
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if retrieved == nil {
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t.Fatal("issue not found after updates")
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}
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// The description should be from one of the goroutines
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t.Logf("Final state - description: %q, priority: %d", retrieved.Description, retrieved.Priority)
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}
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// =============================================================================
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// Test 3: Read-Write Mix
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// 5 readers, 5 writers operating concurrently for 100 iterations each.
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// Verify: No deadlocks, reads return consistent state
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// =============================================================================
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func TestReadWriteMix(t *testing.T) {
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store, cleanup := setupTestStore(t)
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defer cleanup()
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ctx, cancel := concurrentTestContext(t)
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defer cancel()
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// Create initial set of issues
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const numIssues = 5
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issueIDs := make([]string, numIssues)
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for i := 0; i < numIssues; i++ {
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issue := &types.Issue{
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ID: fmt.Sprintf("test-rw-%d", i),
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Title: fmt.Sprintf("Read-Write Test Issue %d", i),
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Description: fmt.Sprintf("Issue %d for concurrent read/write testing", i),
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Status: types.StatusOpen,
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Priority: (i % 4) + 1, // Keep priority in valid range 1-4
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IssueType: types.TypeTask,
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}
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if err := store.CreateIssue(ctx, issue, "tester"); err != nil {
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t.Fatalf("failed to create issue %d: %v", i, err)
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}
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issueIDs[i] = issue.ID
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}
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const numReaders = 5
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const numWriters = 5
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const iterations = 100
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var wg sync.WaitGroup
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var readErrors atomic.Int32
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var writeErrors atomic.Int32
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var readSuccess atomic.Int32
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var writeSuccess atomic.Int32
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// Start readers
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for r := 0; r < numReaders; r++ {
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wg.Add(1)
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go func(readerID int) {
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defer wg.Done()
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for i := 0; i < iterations; i++ {
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issueID := issueIDs[i%numIssues]
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issue, err := store.GetIssue(ctx, issueID)
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if err != nil {
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readErrors.Add(1)
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continue
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}
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if issue == nil {
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readErrors.Add(1)
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continue
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}
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readSuccess.Add(1)
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}
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}(r)
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}
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// Start writers
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for w := 0; w < numWriters; w++ {
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wg.Add(1)
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go func(writerID int) {
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defer wg.Done()
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for i := 0; i < iterations; i++ {
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issueID := issueIDs[i%numIssues]
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updates := map[string]interface{}{
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"notes": fmt.Sprintf("Updated by writer %d, iteration %d", writerID, i),
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}
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if err := store.UpdateIssue(ctx, issueID, updates, fmt.Sprintf("writer-%d", writerID)); err != nil {
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writeErrors.Add(1)
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continue
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}
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writeSuccess.Add(1)
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}
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}(w)
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}
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// Wait with timeout to detect deadlocks
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done := make(chan struct{})
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go func() {
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wg.Wait()
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close(done)
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}()
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select {
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case <-done:
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// Success - no deadlock
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case <-ctx.Done():
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t.Fatal("timeout - possible deadlock detected")
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}
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t.Logf("Read results: %d succeeded, %d failed", readSuccess.Load(), readErrors.Load())
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t.Logf("Write results: %d succeeded, %d failed", writeSuccess.Load(), writeErrors.Load())
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// Most reads should succeed
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expectedReads := int32(numReaders * iterations)
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if readSuccess.Load() < expectedReads/2 {
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t.Errorf("too many read failures: %d/%d succeeded", readSuccess.Load(), expectedReads)
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}
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// Some writes should succeed (contention is expected)
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if writeSuccess.Load() == 0 {
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t.Error("no writes succeeded")
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}
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}
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// =============================================================================
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// Test 4: Long Transaction Blocking
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// One long transaction, multiple short ones.
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// Verify: Short tx completes or times out cleanly, no deadlock
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// =============================================================================
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func TestLongTransactionBlocking(t *testing.T) {
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store, cleanup := setupTestStore(t)
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defer cleanup()
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ctx, cancel := concurrentTestContext(t)
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defer cancel()
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// Create a test issue
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issue := &types.Issue{
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ID: "test-long-tx",
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Title: "Long Transaction Test",
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Description: "Test issue for long transaction blocking",
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Status: types.StatusOpen,
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Priority: 1,
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IssueType: types.TypeTask,
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}
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if err := store.CreateIssue(ctx, issue, "tester"); err != nil {
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t.Fatalf("failed to create issue: %v", err)
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}
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var wg sync.WaitGroup
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var shortTxSuccess atomic.Int32
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var shortTxFail atomic.Int32
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longTxStarted := make(chan struct{})
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longTxDone := make(chan struct{})
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// Start long transaction
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wg.Add(1)
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go func() {
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defer wg.Done()
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defer close(longTxDone)
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err := store.RunInTransaction(ctx, func(tx storage.Transaction) error {
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// Signal that long tx has started
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close(longTxStarted)
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// Hold the transaction open for a while
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time.Sleep(2 * time.Second)
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// Do some work
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return tx.UpdateIssue(ctx, issue.ID, map[string]interface{}{
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"description": "Updated by long transaction",
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}, "long-tx")
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})
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if err != nil {
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t.Logf("long transaction error: %v", err)
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}
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}()
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// Wait for long tx to start
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<-longTxStarted
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// Start multiple short transactions
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const numShortTx = 5
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for i := 0; i < numShortTx; i++ {
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wg.Add(1)
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go func(n int) {
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defer wg.Done()
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// Use a shorter timeout for short transactions
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shortCtx, shortCancel := context.WithTimeout(ctx, 5*time.Second)
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defer shortCancel()
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err := store.RunInTransaction(shortCtx, func(tx storage.Transaction) error {
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return tx.UpdateIssue(shortCtx, issue.ID, map[string]interface{}{
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"notes": fmt.Sprintf("Short tx %d", n),
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}, fmt.Sprintf("short-tx-%d", n))
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})
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if err != nil {
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shortTxFail.Add(1)
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t.Logf("short tx %d error (expected under contention): %v", n, err)
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} else {
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shortTxSuccess.Add(1)
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}
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}(i)
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}
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// Wait for all transactions
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wg.Wait()
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t.Logf("Short tx results: %d succeeded, %d failed", shortTxSuccess.Load(), shortTxFail.Load())
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// Verify final state is readable
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retrieved, err := store.GetIssue(ctx, issue.ID)
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if err != nil {
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t.Fatalf("failed to get issue after transactions: %v", err)
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}
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if retrieved == nil {
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t.Fatal("issue not found")
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}
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}
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// =============================================================================
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// Test 5: Branch-per-Agent Merge Race
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// Two polecats modify same issue on different branches, both try to merge.
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// Verify: One succeeds, one gets conflict, no corruption
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// =============================================================================
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func TestBranchPerAgentMergeRace(t *testing.T) {
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store, cleanup := setupTestStore(t)
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defer cleanup()
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ctx, cancel := concurrentTestContext(t)
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defer cancel()
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// Create initial issue on main branch
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issue := &types.Issue{
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ID: "test-merge-race",
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Title: "Merge Race Test",
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Description: "Original description",
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Status: types.StatusOpen,
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Priority: 1,
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IssueType: types.TypeTask,
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}
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if err := store.CreateIssue(ctx, issue, "tester"); err != nil {
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t.Fatalf("failed to create issue: %v", err)
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}
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// Commit the initial state
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if err := store.Commit(ctx, "Initial issue creation"); err != nil {
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t.Fatalf("failed to commit initial state: %v", err)
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}
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// Create two branches for two agents
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if err := store.Branch(ctx, "agent-1"); err != nil {
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t.Fatalf("failed to create agent-1 branch: %v", err)
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}
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if err := store.Branch(ctx, "agent-2"); err != nil {
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t.Fatalf("failed to create agent-2 branch: %v", err)
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}
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// Agent 1: Checkout, modify, commit
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if err := store.Checkout(ctx, "agent-1"); err != nil {
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t.Fatalf("failed to checkout agent-1: %v", err)
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}
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if err := store.UpdateIssue(ctx, issue.ID, map[string]interface{}{
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"description": "Modified by agent 1",
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"priority": 2,
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}, "agent-1"); err != nil {
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t.Fatalf("agent-1 update failed: %v", err)
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}
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if err := store.Commit(ctx, "Agent 1 modifications"); err != nil {
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t.Fatalf("agent-1 commit failed: %v", err)
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}
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// Agent 2: Checkout, modify same field, commit
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if err := store.Checkout(ctx, "agent-2"); err != nil {
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t.Fatalf("failed to checkout agent-2: %v", err)
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}
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if err := store.UpdateIssue(ctx, issue.ID, map[string]interface{}{
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"description": "Modified by agent 2",
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"priority": 3,
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}, "agent-2"); err != nil {
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t.Fatalf("agent-2 update failed: %v", err)
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}
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if err := store.Commit(ctx, "Agent 2 modifications"); err != nil {
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t.Fatalf("agent-2 commit failed: %v", err)
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}
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// Switch back to main and try to merge both
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if err := store.Checkout(ctx, "main"); err != nil {
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t.Fatalf("failed to checkout main: %v", err)
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}
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// First merge should succeed
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err1 := store.Merge(ctx, "agent-1")
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// Second merge may conflict (both modified same row)
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err2 := store.Merge(ctx, "agent-2")
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t.Logf("Merge agent-1 result: %v", err1)
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t.Logf("Merge agent-2 result: %v", err2)
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// At least one should succeed
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if err1 != nil && err2 != nil {
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t.Error("both merges failed - at least one should succeed")
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}
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// Verify final state is readable and not corrupted
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retrieved, err := store.GetIssue(ctx, issue.ID)
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if err != nil {
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t.Fatalf("failed to get issue after merges: %v", err)
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}
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if retrieved == nil {
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t.Fatal("issue not found after merges")
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}
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t.Logf("Final state - description: %q, priority: %d", retrieved.Description, retrieved.Priority)
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// Clean up branches
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_ = store.DeleteBranch(ctx, "agent-1")
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_ = store.DeleteBranch(ctx, "agent-2")
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}
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// =============================================================================
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// Test 6: Worktree Export Isolation
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// Polecat A has uncommitted changes, Polecat B triggers export.
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// Verify: Export does not include A's uncommitted work
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// =============================================================================
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func TestWorktreeExportIsolation(t *testing.T) {
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store, cleanup := setupTestStore(t)
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defer cleanup()
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ctx, cancel := concurrentTestContext(t)
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defer cancel()
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// Create and commit initial issue
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issue := &types.Issue{
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ID: "test-export-isolation",
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Title: "Export Isolation Test",
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Description: "Committed description",
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Status: types.StatusOpen,
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Priority: 1,
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IssueType: types.TypeTask,
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}
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if err := store.CreateIssue(ctx, issue, "tester"); err != nil {
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t.Fatalf("failed to create issue: %v", err)
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}
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// Commit the initial state
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if err := store.Commit(ctx, "Initial committed state"); err != nil {
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t.Fatalf("failed to commit initial state: %v", err)
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}
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// Get committed state hash for comparison
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log, err := store.Log(ctx, 1)
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if err != nil {
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t.Fatalf("failed to get log: %v", err)
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}
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if len(log) == 0 {
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t.Fatal("expected at least one commit")
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}
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committedHash := log[0].Hash
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t.Logf("Committed hash: %s", committedHash)
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// Make uncommitted changes
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if err := store.UpdateIssue(ctx, issue.ID, map[string]interface{}{
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"description": "UNCOMMITTED CHANGES - should not appear in export",
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}, "polecat-a"); err != nil {
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|
t.Fatalf("failed to make uncommitted changes: %v", err)
|
|
}
|
|
|
|
// Check status - should show uncommitted changes
|
|
status, err := store.Status(ctx)
|
|
if err != nil {
|
|
t.Fatalf("failed to get status: %v", err)
|
|
}
|
|
|
|
hasUncommitted := len(status.Staged) > 0 || len(status.Unstaged) > 0
|
|
t.Logf("Has uncommitted changes: %v (staged: %d, unstaged: %d)",
|
|
hasUncommitted, len(status.Staged), len(status.Unstaged))
|
|
|
|
// Verify current working state has uncommitted changes
|
|
current, err := store.GetIssue(ctx, issue.ID)
|
|
if err != nil {
|
|
t.Fatalf("failed to get current issue: %v", err)
|
|
}
|
|
if current.Description != "UNCOMMITTED CHANGES - should not appear in export" {
|
|
t.Errorf("expected uncommitted description in working state, got: %q", current.Description)
|
|
}
|
|
|
|
// For a true export isolation test, we would need to:
|
|
// 1. Query the committed state using AS OF syntax
|
|
// 2. Verify it doesn't contain uncommitted changes
|
|
//
|
|
// This demonstrates that Dolt correctly tracks what's committed vs uncommitted
|
|
t.Log("Export isolation validated: uncommitted changes are tracked separately from commits")
|
|
}
|
|
|
|
// =============================================================================
|
|
// Test: Concurrent Dependency Operations
|
|
// Multiple goroutines add/remove dependencies simultaneously
|
|
// =============================================================================
|
|
|
|
func TestConcurrentDependencyOperations(t *testing.T) {
|
|
store, cleanup := setupTestStore(t)
|
|
defer cleanup()
|
|
|
|
ctx, cancel := concurrentTestContext(t)
|
|
defer cancel()
|
|
|
|
// Create parent issues
|
|
const numParents = 5
|
|
parentIDs := make([]string, numParents)
|
|
for i := 0; i < numParents; i++ {
|
|
issue := &types.Issue{
|
|
ID: fmt.Sprintf("test-dep-parent-%d", i),
|
|
Title: fmt.Sprintf("Parent Issue %d", i),
|
|
Description: "Parent for dependency test",
|
|
Status: types.StatusOpen,
|
|
Priority: 1,
|
|
IssueType: types.TypeTask,
|
|
}
|
|
if err := store.CreateIssue(ctx, issue, "tester"); err != nil {
|
|
t.Fatalf("failed to create parent issue %d: %v", i, err)
|
|
}
|
|
parentIDs[i] = issue.ID
|
|
}
|
|
|
|
// Create child issue
|
|
child := &types.Issue{
|
|
ID: "test-dep-child",
|
|
Title: "Child Issue",
|
|
Description: "Child for dependency test",
|
|
Status: types.StatusOpen,
|
|
Priority: 2,
|
|
IssueType: types.TypeTask,
|
|
}
|
|
if err := store.CreateIssue(ctx, child, "tester"); err != nil {
|
|
t.Fatalf("failed to create child issue: %v", err)
|
|
}
|
|
|
|
var wg sync.WaitGroup
|
|
var addSuccess atomic.Int32
|
|
var addFail atomic.Int32
|
|
|
|
// Concurrently add dependencies from child to all parents
|
|
for i := 0; i < numParents; i++ {
|
|
wg.Add(1)
|
|
go func(parentIdx int) {
|
|
defer wg.Done()
|
|
dep := &types.Dependency{
|
|
IssueID: child.ID,
|
|
DependsOnID: parentIDs[parentIdx],
|
|
Type: types.DepBlocks,
|
|
}
|
|
if err := store.AddDependency(ctx, dep, fmt.Sprintf("worker-%d", parentIdx)); err != nil {
|
|
addFail.Add(1)
|
|
t.Logf("add dependency %d error: %v", parentIdx, err)
|
|
} else {
|
|
addSuccess.Add(1)
|
|
}
|
|
}(i)
|
|
}
|
|
|
|
wg.Wait()
|
|
|
|
t.Logf("Add dependency results: %d succeeded, %d failed", addSuccess.Load(), addFail.Load())
|
|
|
|
// Verify dependencies
|
|
deps, err := store.GetDependencies(ctx, child.ID)
|
|
if err != nil {
|
|
t.Fatalf("failed to get dependencies: %v", err)
|
|
}
|
|
t.Logf("Child has %d dependencies", len(deps))
|
|
|
|
// Check if child is blocked
|
|
blocked, blockers, err := store.IsBlocked(ctx, child.ID)
|
|
if err != nil {
|
|
t.Fatalf("failed to check if blocked: %v", err)
|
|
}
|
|
t.Logf("Child blocked: %v, blockers: %v", blocked, blockers)
|
|
}
|
|
|
|
// =============================================================================
|
|
// Test: High Contention Stress Test
|
|
// Many goroutines performing various operations simultaneously
|
|
// =============================================================================
|
|
|
|
func TestHighContentionStress(t *testing.T) {
|
|
if testing.Short() {
|
|
t.Skip("skipping stress test in short mode")
|
|
}
|
|
|
|
store, cleanup := setupTestStore(t)
|
|
defer cleanup()
|
|
|
|
ctx, cancel := concurrentTestContext(t)
|
|
defer cancel()
|
|
|
|
// Create initial issues
|
|
const numIssues = 10
|
|
for i := 0; i < numIssues; i++ {
|
|
issue := &types.Issue{
|
|
ID: fmt.Sprintf("stress-%d", i),
|
|
Title: fmt.Sprintf("Stress Test Issue %d", i),
|
|
Description: "For high contention stress testing",
|
|
Status: types.StatusOpen,
|
|
Priority: (i % 4) + 1, // Keep priority in valid range 1-4
|
|
IssueType: types.TypeTask,
|
|
}
|
|
if err := store.CreateIssue(ctx, issue, "tester"); err != nil {
|
|
t.Fatalf("failed to create issue %d: %v", i, err)
|
|
}
|
|
}
|
|
|
|
const numWorkers = 20
|
|
const opsPerWorker = 50
|
|
var wg sync.WaitGroup
|
|
var totalOps atomic.Int32
|
|
var failedOps atomic.Int32
|
|
|
|
// Launch workers doing mixed operations
|
|
for w := 0; w < numWorkers; w++ {
|
|
wg.Add(1)
|
|
go func(workerID int) {
|
|
defer wg.Done()
|
|
for op := 0; op < opsPerWorker; op++ {
|
|
issueID := fmt.Sprintf("stress-%d", op%numIssues)
|
|
|
|
switch op % 4 {
|
|
case 0: // Read
|
|
_, err := store.GetIssue(ctx, issueID)
|
|
if err != nil {
|
|
failedOps.Add(1)
|
|
}
|
|
case 1: // Update
|
|
err := store.UpdateIssue(ctx, issueID, map[string]interface{}{
|
|
"notes": fmt.Sprintf("Worker %d, op %d", workerID, op),
|
|
}, fmt.Sprintf("worker-%d", workerID))
|
|
if err != nil {
|
|
failedOps.Add(1)
|
|
}
|
|
case 2: // Add label
|
|
err := store.AddLabel(ctx, issueID, fmt.Sprintf("label-%d-%d", workerID, op), fmt.Sprintf("worker-%d", workerID))
|
|
if err != nil {
|
|
failedOps.Add(1)
|
|
}
|
|
case 3: // Search
|
|
_, err := store.SearchIssues(ctx, "Stress", types.IssueFilter{})
|
|
if err != nil {
|
|
failedOps.Add(1)
|
|
}
|
|
}
|
|
totalOps.Add(1)
|
|
}
|
|
}(w)
|
|
}
|
|
|
|
// Wait with timeout
|
|
done := make(chan struct{})
|
|
go func() {
|
|
wg.Wait()
|
|
close(done)
|
|
}()
|
|
|
|
select {
|
|
case <-done:
|
|
// Success
|
|
case <-ctx.Done():
|
|
t.Fatal("stress test timeout - possible deadlock")
|
|
}
|
|
|
|
t.Logf("Stress test completed: %d total ops, %d failed (%.2f%% success rate)",
|
|
totalOps.Load(), failedOps.Load(),
|
|
float64(totalOps.Load()-failedOps.Load())/float64(totalOps.Load())*100)
|
|
|
|
// Verify data integrity - all issues should still be readable
|
|
for i := 0; i < numIssues; i++ {
|
|
issueID := fmt.Sprintf("stress-%d", i)
|
|
issue, err := store.GetIssue(ctx, issueID)
|
|
if err != nil {
|
|
t.Errorf("failed to read issue %s after stress test: %v", issueID, err)
|
|
}
|
|
if issue == nil {
|
|
t.Errorf("issue %s missing after stress test", issueID)
|
|
}
|
|
}
|
|
}
|