predicates: notice source changing to Ready=True

This ensure that when a chart object has a temporary `Ready=False`
state, the predicate will notice the change to `Ready=True` and
cause an enqueue request.

Signed-off-by: Hidde Beydals <hidde@hhh.computer>

internal/predicates/source_predicate.go

@@ -17,14 +17,15 @@ limitations under the License.
 package predicates
 
 import (
+	"github.com/fluxcd/pkg/runtime/conditions"
 	"sigs.k8s.io/controller-runtime/pkg/event"
 	"sigs.k8s.io/controller-runtime/pkg/predicate"
 
 	sourcev1 "github.com/fluxcd/source-controller/api/v1"
 )
 
-// SourceRevisionChangePredicate detects revision changes to the v1beta2.Artifact
-// of a v1beta2.Source object.
+// SourceRevisionChangePredicate detects revision changes to the v1.Artifact of
+// a v1.Source object.
 type SourceRevisionChangePredicate struct {
 	predicate.Funcs
 }
@@ -53,6 +54,20 @@ func (SourceRevisionChangePredicate) Update(e event.UpdateEvent) bool {
 		return true
 	}
 
+	oldConditions, ok := e.ObjectOld.(conditions.Getter)
+	if !ok {
+		return false
+	}
+
+	newConditions, ok := e.ObjectNew.(conditions.Getter)
+	if !ok {
+		return false
+	}
+
+	if !conditions.IsReady(oldConditions) && conditions.IsReady(newConditions) {
+		return true
+	}
+
 	return false
 }
 

internal/predicates/source_predicate_test.go

@@ -21,10 +21,13 @@ import (
 	"time"
 
 	"github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/event"
 
+	"github.com/fluxcd/pkg/apis/meta"
+
 	sourcev1 "github.com/fluxcd/source-controller/api/v1"
 )
 
@@ -46,6 +49,54 @@ func TestSourceRevisionChangePredicate_Update(t *testing.T) {
 		{name: "old with artifact", old: sourceA, new: emptySource, want: false},
 		{name: "old not a source", old: notASource, new: sourceA, want: false},
 		{name: "new not a source", old: sourceA, new: notASource, want: false},
+		{
+			name: "old not ready and new ready",
+			old: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionFalse}},
+			},
+			new: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionTrue}},
+			},
+			want: true,
+		},
+		{
+			name: "old ready and new not ready",
+			old: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionTrue}},
+			},
+			new: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionFalse}},
+			},
+			want: false,
+		},
+		{
+			name: "old not ready and new not ready",
+			old: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionFalse}},
+			},
+			new: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionFalse}},
+			},
+			want: false,
+		},
+		{
+			name: "old ready and new ready",
+			old: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionTrue}},
+			},
+			new: &sourceMock{
+				revision:   "revision-a",
+				conditions: []metav1.Condition{{Type: meta.ReadyCondition, Status: metav1.ConditionTrue}},
+			},
+			want: false,
+		},
 		{name: "old nil", old: nil, new: sourceA, want: false},
 		{name: "new nil", old: sourceA, new: nil, want: false},
 	}
@@ -65,7 +116,8 @@ func TestSourceRevisionChangePredicate_Update(t *testing.T) {
 
 type sourceMock struct {
 	unstructured.Unstructured
-	revision string
+	revision   string
+	conditions []metav1.Condition
 }
 
 func (m sourceMock) GetRequeueAfter() time.Duration {
@@ -80,3 +132,7 @@ func (m *sourceMock) GetArtifact() *sourcev1.Artifact {
 	}
 	return nil
 }
+
+func (m *sourceMock) GetConditions() []metav1.Condition {
+	return m.conditions
+}