Add ingress (#18)

ingress/kube/annotations/canary_test.go

@@ -0,0 +1,254 @@
+// Copyright (c) 2022 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package annotations
+
+import (
+	"reflect"
+	"testing"
+
+	networking "istio.io/api/networking/v1alpha3"
+)
+
+func TestApplyWeight(t *testing.T) {
+	route := &networking.HTTPRoute{
+		Headers: &networking.Headers{
+			Request: &networking.Headers_HeaderOperations{
+				Add: map[string]string{
+					"normal": "true",
+				},
+			},
+		},
+		Route: []*networking.HTTPRouteDestination{
+			{
+				Destination: &networking.Destination{
+					Host: "normal",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+			},
+		},
+	}
+
+	canary1 := &networking.HTTPRoute{
+		Headers: &networking.Headers{
+			Request: &networking.Headers_HeaderOperations{
+				Add: map[string]string{
+					"canary1": "true",
+				},
+			},
+		},
+		Route: []*networking.HTTPRouteDestination{
+			{
+				Destination: &networking.Destination{
+					Host: "canary1",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+			},
+		},
+	}
+
+	canary2 := &networking.HTTPRoute{
+		Headers: &networking.Headers{
+			Request: &networking.Headers_HeaderOperations{
+				Add: map[string]string{
+					"canary2": "true",
+				},
+			},
+		},
+		Route: []*networking.HTTPRouteDestination{
+			{
+				Destination: &networking.Destination{
+					Host: "canary2",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+			},
+		},
+	}
+
+	ApplyByWeight(canary1, route, &Ingress{
+		Canary: &CanaryConfig{
+			Weight: 30,
+		},
+	})
+
+	ApplyByWeight(canary2, route, &Ingress{
+		Canary: &CanaryConfig{
+			Weight: 20,
+		},
+	})
+
+	expect := &networking.HTTPRoute{
+		Route: []*networking.HTTPRouteDestination{
+			{
+				Destination: &networking.Destination{
+					Host: "normal",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+				Headers: &networking.Headers{
+					Request: &networking.Headers_HeaderOperations{
+						Add: map[string]string{
+							"normal": "true",
+						},
+					},
+				},
+			},
+			{
+				Destination: &networking.Destination{
+					Host: "canary1",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+				Headers: &networking.Headers{
+					Request: &networking.Headers_HeaderOperations{
+						Add: map[string]string{
+							"canary1": "true",
+						},
+					},
+				},
+				Weight: 30,
+				FallbackClusters: []*networking.Destination{
+					{
+						Host: "normal",
+						Port: &networking.PortSelector{
+							Number: 80,
+						},
+					},
+				},
+			},
+			{
+				Destination: &networking.Destination{
+					Host: "canary2",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+				Headers: &networking.Headers{
+					Request: &networking.Headers_HeaderOperations{
+						Add: map[string]string{
+							"canary2": "true",
+						},
+					},
+				},
+				Weight: 20,
+				FallbackClusters: []*networking.Destination{
+					{
+						Host: "normal",
+						Port: &networking.PortSelector{
+							Number: 80,
+						},
+					},
+				},
+			},
+		},
+	}
+
+	if !reflect.DeepEqual(route, expect) {
+		t.Fatal("Should be equal")
+	}
+}
+
+func TestApplyHeader(t *testing.T) {
+	route := &networking.HTTPRoute{
+		Headers: &networking.Headers{
+			Request: &networking.Headers_HeaderOperations{
+				Add: map[string]string{
+					"normal": "true",
+				},
+			},
+		},
+		Route: []*networking.HTTPRouteDestination{
+			{
+				Destination: &networking.Destination{
+					Host: "normal",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+			},
+		},
+	}
+
+	canary := &networking.HTTPRoute{
+		Headers: &networking.Headers{
+			Request: &networking.Headers_HeaderOperations{
+				Add: map[string]string{
+					"canary": "true",
+				},
+			},
+		},
+		Route: []*networking.HTTPRouteDestination{
+			{
+				Destination: &networking.Destination{
+					Host: "canary",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+			},
+		},
+	}
+
+	ApplyByHeader(canary, route, &Ingress{
+		Canary: &CanaryConfig{},
+		HeaderControl: &HeaderControlConfig{
+			Request: &HeaderOperation{
+				Add: map[string]string{
+					"canary": "true",
+				},
+			},
+		},
+	})
+
+	expect := &networking.HTTPRoute{
+		Headers: &networking.Headers{
+			Request: &networking.Headers_HeaderOperations{
+				Add: map[string]string{
+					"canary": "true",
+				},
+			},
+			Response: &networking.Headers_HeaderOperations{},
+		},
+		Route: []*networking.HTTPRouteDestination{
+			{
+				Destination: &networking.Destination{
+					Host: "canary",
+					Port: &networking.PortSelector{
+						Number: 80,
+					},
+				},
+				FallbackClusters: []*networking.Destination{
+					{
+						Host: "normal",
+						Port: &networking.PortSelector{
+							Number: 80,
+						},
+					},
+				},
+			},
+		},
+	}
+
+	if !reflect.DeepEqual(canary, expect) {
+		t.Fatal("Should be equal")
+	}
+}