fix: data race in ingester test (#15465)

Author: na--

pkg/ingester/ingester_test.go

@@ -11,6 +11,8 @@ import (
 	"testing"
 	"time"
 
+	"go.uber.org/atomic"
+
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
 	"github.com/grafana/dskit/backoff"
@@ -1498,7 +1500,7 @@ func jsonLine(ts int64, i int) string {
 
 type readRingMock struct {
 	replicationSet          ring.ReplicationSet
-	getAllHealthyCallsCount int
+	getAllHealthyCallsCount atomic.Int32
 	tokenRangesByIngester   map[string]ring.TokenRanges
 }
 
@@ -1538,7 +1540,7 @@ func (r *readRingMock) BatchGet(_ []uint32, _ ring.Operation) ([]ring.Replicatio
 }
 
 func (r *readRingMock) GetAllHealthy(_ ring.Operation) (ring.ReplicationSet, error) {
-	r.getAllHealthyCallsCount++
+	r.getAllHealthyCallsCount.Add(1)
 	return r.replicationSet, nil
 }
 

pkg/ingester/recalculate_owned_streams_test.go

@@ -25,12 +25,12 @@ func Test_recalculateOwnedStreams_newRecalculateOwnedStreamsIngester(t *testing.
 	}, 0)
 	strategy := newOwnedStreamsIngesterStrategy("test", mockRing, log.NewNopLogger())
 	service := newRecalculateOwnedStreamsSvc(mockInstancesSupplier.get, strategy, 50*time.Millisecond, log.NewNopLogger())
-	require.Equal(t, 0, mockRing.getAllHealthyCallsCount, "ring must be called only after service's start up")
+	require.Equal(t, int32(0), mockRing.getAllHealthyCallsCount.Load(), "ring must be called only after service's start up")
 	ctx := context.Background()
 	require.NoError(t, service.StartAsync(ctx))
 	require.NoError(t, service.AwaitRunning(ctx))
 	require.Eventually(t, func() bool {
-		return mockRing.getAllHealthyCallsCount >= 2
+		return mockRing.getAllHealthyCallsCount.Load() >= 2
 	}, 1*time.Second, 50*time.Millisecond, "expected at least two runs of the iteration")
 }