fix(solver) resolve a data race with ops counters

Author: hbagdi

solver/solver.go

@@ -2,6 +2,7 @@ package solver
 
 import (
 	"context"
+	"sync/atomic"
 
 	"github.com/kong/deck/crud"
 	"github.com/kong/deck/diff"
@@ -14,9 +15,9 @@ import (
 
 // Stats holds the stats related to a Solve.
 type Stats struct {
-	CreateOps int
-	UpdateOps int
-	DeleteOps int
+	CreateOps int32
+	UpdateOps int32
+	DeleteOps int32
 }
 
 // Solve generates a diff and walks the graph.
@@ -27,14 +28,15 @@ func Solve(ctx context.Context, syncer *diff.Syncer,
 	r := buildRegistry(client, konnectClient)
 
 	var stats Stats
+
 	recordOp := func(op crud.Op) {
 		switch op {
 		case crud.Create:
-			stats.CreateOps = stats.CreateOps + 1
+			atomic.AddInt32(&stats.CreateOps, 1)
 		case crud.Update:
-			stats.UpdateOps = stats.UpdateOps + 1
+			atomic.AddInt32(&stats.UpdateOps, 1)
 		case crud.Delete:
-			stats.DeleteOps = stats.DeleteOps + 1
+			atomic.AddInt32(&stats.DeleteOps, 1)
 		}
 	}