Add ingress (#18)

ingress/kube/util/util.go

@@ -0,0 +1,84 @@
+// 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 util
+
+import (
+	"bytes"
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"path"
+	"strings"
+
+	"github.com/gogo/protobuf/types"
+	"github.com/golang/protobuf/jsonpb"
+	"github.com/golang/protobuf/proto"
+	"istio.io/istio/pilot/pkg/model"
+)
+
+const DefaultDomainSuffix = "cluster.local"
+
+type ClusterNamespacedName struct {
+	model.NamespacedName
+	ClusterId string
+}
+
+func (c ClusterNamespacedName) String() string {
+	return c.ClusterId + "/" + c.NamespacedName.String()
+}
+
+func SplitNamespacedName(name string) model.NamespacedName {
+	nsName := strings.Split(name, "/")
+	if len(nsName) == 2 {
+		return model.NamespacedName{
+			Namespace: nsName[0],
+			Name:      nsName[1],
+		}
+	}
+
+	return model.NamespacedName{
+		Name: nsName[0],
+	}
+}
+
+// CreateDestinationRuleName create the same format of DR name with ops.
+func CreateDestinationRuleName(istioCluster, namespace, name string) string {
+	format := path.Join(istioCluster, namespace, name)
+	hash := md5.Sum([]byte(format))
+	return hex.EncodeToString(hash[:])
+}
+
+func MessageToGoGoStruct(msg proto.Message) (*types.Struct, error) {
+	if msg == nil {
+		return nil, errors.New("nil message")
+	}
+
+	buf := &bytes.Buffer{}
+	if err := (&jsonpb.Marshaler{OrigName: true}).Marshal(buf, msg); err != nil {
+		return nil, err
+	}
+
+	pbs := &types.Struct{}
+	if err := jsonpb.Unmarshal(buf, pbs); err != nil {
+		return nil, err
+	}
+
+	return pbs, nil
+}
+
+func CreateServiceFQDN(namespace, name string) string {
+	return fmt.Sprintf("%s.%s.svc.%s", name, namespace, DefaultDomainSuffix)
+}

ingress/kube/util/util_test.go

@@ -0,0 +1,108 @@
+// 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 util
+
+import (
+	"testing"
+
+	corev3 "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
+	wasm "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/http/wasm/v3"
+	v3 "github.com/envoyproxy/go-control-plane/envoy/extensions/wasm/v3"
+	any "google.golang.org/protobuf/types/known/anypb"
+	"istio.io/istio/pilot/pkg/model"
+)
+
+func TestSplitNamespacedName(t *testing.T) {
+	testCases := []struct {
+		input  string
+		expect model.NamespacedName
+	}{
+		{
+			input: "",
+		},
+		{
+			input: "a/",
+			expect: model.NamespacedName{
+				Namespace: "a",
+			},
+		},
+		{
+			input: "a/b",
+			expect: model.NamespacedName{
+				Namespace: "a",
+				Name:      "b",
+			},
+		},
+		{
+			input: "/b",
+			expect: model.NamespacedName{
+				Name: "b",
+			},
+		},
+		{
+			input: "b",
+			expect: model.NamespacedName{
+				Name: "b",
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run("", func(t *testing.T) {
+			result := SplitNamespacedName(testCase.input)
+			if result != testCase.expect {
+				t.Fatalf("expect is %v, but actual is %v", testCase.expect, result)
+			}
+		})
+	}
+}
+
+func TestCreateDestinationRuleName(t *testing.T) {
+	istioCluster := "gw-123-istio"
+	namespace := "default"
+	serviceName := "go-httpbin-v1"
+	t.Log(CreateDestinationRuleName(istioCluster, namespace, serviceName))
+}
+
+func TestMessageToGoGoStruct(t *testing.T) {
+	bytes := []byte("test")
+	wasm := &wasm.Wasm{
+		Config: &v3.PluginConfig{
+			Name:     "basic-auth",
+			FailOpen: true,
+			Vm: &v3.PluginConfig_VmConfig{
+				VmConfig: &v3.VmConfig{
+					Runtime: "envoy.wasm.runtime.null",
+					Code: &corev3.AsyncDataSource{
+						Specifier: &corev3.AsyncDataSource_Local{
+							Local: &corev3.DataSource{
+								Specifier: &corev3.DataSource_InlineString{
+									InlineString: "envoy.wasm.basic_auth",
+								},
+							},
+						},
+					},
+				},
+			},
+			Configuration: &any.Any{
+				TypeUrl: "type.googleapis.com/google.protobuf.StringValue",
+				Value:   bytes,
+			},
+		},
+	}
+
+	gogoStruct, _ := MessageToGoGoStruct(wasm)
+	t.Log(gogoStruct)
+}