Merge pull request #24 from whalecold/feat/customize

feat/cusomize: support customize parameter by env

Author: CoderPoet

core/manager/auth/jwt.go

@@ -38,6 +38,9 @@ const (
 	clusterIDEnvKey = "ISTIO_META_CLUSTER_ID"
 
 	clusterIDMetadataKey = "clusterid" // Istiod retrieves clusterid and use it for auth of JWT.
+
+	// the env for customize jwt token path
+	KitexXdsTokenPath = "KITEX_XDS_SA_TOKEN_PATH"
 )
 
 var (
@@ -103,7 +106,10 @@ var jwtTokenValueFmt = func(jwtToken string) string {
 }
 
 func getJWTToken() (string, error) {
-	saToken := jwtTokenPath
+	saToken := os.Getenv(KitexXdsTokenPath)
+	if saToken == "" {
+		saToken = jwtTokenPath
+	}
 
 	token, err := os.ReadFile(saToken)
 	if err != nil {

core/manager/bootstrap.go

@@ -33,14 +33,40 @@ const (
 	PodName        = "POD_NAME"
 	MetaNamespace  = "NAMESPACE"
 	InstanceIP     = "INSTANCE_IP"
-	IstiodAddr     = "istiod.istio-system.svc:15010"
 	KitexXdsDomain = "KITEX_XDS_DOMAIN"
 	// use json to marshal it.
 	KitexXdsMetas = "KITEX_XDS_METAS"
-	IstiodSvrName = "istiod.istio-system.svc"
-	IstioVersion  = "ISTIO_VERSION"
+
+	IstioAddrEnvKey        = "KITEX_XDS_ISTIO_ADDR"
+	IstioServiceNameEnvKey = "KITEX_XDS_ISTIO_SERVICE_NAME"
+	IstioAuthEnvKey        = "KITEX_XDS_ISTIO_AUTH"
+	IstioVersion           = "ISTIO_VERSION"
+	IstioMetaInstanceIPs   = "INSTANCE_IPS"
+)
+
+var (
+	IstiodAddr      = "istiod.istio-system.svc:15010"
+	IstiodSvrName   = "istiod.istio-system.svc"
+	IstioAuthEnable = false
 )
 
+func init() {
+	istiodAddr := os.Getenv(IstioAddrEnvKey)
+	if istiodAddr != "" {
+		IstiodAddr = istiodAddr
+	}
+
+	istiodSvrName := os.Getenv(IstioServiceNameEnvKey)
+	if istiodSvrName != "" {
+		IstiodSvrName = istiodSvrName
+	}
+
+	istiodAuthEnable := os.Getenv(IstioAuthEnvKey)
+	if istiodAuthEnable == "true" {
+		IstioAuthEnable = true
+	}
+}
+
 type BootstrapConfig struct {
 	// The namespace to make up fqdn.
 	// Use POD_NAMESPACE default, the meta namespace will override that if set.
@@ -66,7 +92,7 @@ func (xsc XDSServerConfig) GetFetchXDSTimeout() time.Duration {
 	return xsc.FetchXDSTimeout
 }
 
-func parseMetaEnvs(envs, istioVersion string) *structpb.Struct {
+func parseMetaEnvs(envs, istioVersion, podIP string) *structpb.Struct {
 	defaultMeta := &structpb.Struct{
 		Fields: map[string]*structpb.Value{
 			IstioVersion: {
@@ -86,6 +112,17 @@ func parseMetaEnvs(envs, istioVersion string) *structpb.Struct {
 		klog.Warnf("[Kitex] XDS meta info is invalid %s, error %v", envs, err)
 		return defaultMeta
 	}
+	if ips, ok := pbmeta.Fields[IstioMetaInstanceIPs]; ok {
+		existips := ips.GetStringValue()
+		if existips == "" {
+			existips = podIP
+		} else if !strings.Contains(existips, podIP) {
+			existips = existips + "," + podIP
+		}
+		pbmeta.Fields[IstioMetaInstanceIPs] = &structpb.Value{
+			Kind: &structpb.Value_StringValue{StringValue: existips},
+		}
+	}
 	return pbmeta
 }
 
@@ -161,7 +198,7 @@ func newBootstrapConfig(config *XDSServerConfig) (*BootstrapConfig, error) {
 		configNamespace: namespace,
 		node: &v3core.Node{
 			Id:       nodeId(podIP, podName, namespace, nodeDomain),
-			Metadata: parseMetaEnvs(os.Getenv(KitexXdsMetas), istioVersion),
+			Metadata: parseMetaEnvs(os.Getenv(KitexXdsMetas), istioVersion, podIP),
 		},
 		xdsSvrCfg: config,
 	}

core/manager/bootstrap_test.go

@@ -85,6 +85,27 @@ func TestParseMetaEnvs(t *testing.T) {
 		istioVersion string
 		want         *structpb.Struct
 	}{
+		{
+			desc:         "success",
+			envs:         `{"cluster": "c1", "domain": "d1", "ISTIO_VERSION": "1.16.5","INSTANCE_IPS": "1.2.3.4"}`,
+			istioVersion: "1.16.3",
+			want: &structpb.Struct{
+				Fields: map[string]*structpb.Value{
+					IstioVersion: {
+						Kind: &structpb.Value_StringValue{StringValue: "1.16.5"},
+					},
+					IstioMetaInstanceIPs: {
+						Kind: &structpb.Value_StringValue{StringValue: "1.2.3.4,localhost"},
+					},
+					"cluster": {
+						Kind: &structpb.Value_StringValue{StringValue: "c1"},
+					},
+					"domain": {
+						Kind: &structpb.Value_StringValue{StringValue: "d1"},
+					},
+				},
+			},
+		},
 		{
 			desc:         "success",
 			envs:         `{"cluster": "c1", "domain": "d1", "ISTIO_VERSION": "1.16.5"}`,
@@ -103,6 +124,48 @@ func TestParseMetaEnvs(t *testing.T) {
 				},
 			},
 		},
+		{
+			desc:         "success",
+			envs:         `{"cluster": "c1", "domain": "d1", "ISTIO_VERSION": "1.16.5","INSTANCE_IPS": ""}`,
+			istioVersion: "1.16.3",
+			want: &structpb.Struct{
+				Fields: map[string]*structpb.Value{
+					IstioVersion: {
+						Kind: &structpb.Value_StringValue{StringValue: "1.16.5"},
+					},
+					IstioMetaInstanceIPs: {
+						Kind: &structpb.Value_StringValue{StringValue: "localhost"},
+					},
+					"cluster": {
+						Kind: &structpb.Value_StringValue{StringValue: "c1"},
+					},
+					"domain": {
+						Kind: &structpb.Value_StringValue{StringValue: "d1"},
+					},
+				},
+			},
+		},
+		{
+			desc:         "success",
+			envs:         `{"cluster": "c1", "domain": "d1", "ISTIO_VERSION": "1.16.5","INSTANCE_IPS": "localhost"}`,
+			istioVersion: "1.16.3",
+			want: &structpb.Struct{
+				Fields: map[string]*structpb.Value{
+					IstioVersion: {
+						Kind: &structpb.Value_StringValue{StringValue: "1.16.5"},
+					},
+					IstioMetaInstanceIPs: {
+						Kind: &structpb.Value_StringValue{StringValue: "localhost"},
+					},
+					"cluster": {
+						Kind: &structpb.Value_StringValue{StringValue: "c1"},
+					},
+					"domain": {
+						Kind: &structpb.Value_StringValue{StringValue: "d1"},
+					},
+				},
+			},
+		},
 		{
 			desc:         "default",
 			envs:         ``,
@@ -130,7 +193,7 @@ func TestParseMetaEnvs(t *testing.T) {
 	}
 	for _, tc := range testCases {
 		t.Run(tc.desc, func(t *testing.T) {
-			got := parseMetaEnvs(tc.envs, tc.istioVersion)
+			got := parseMetaEnvs(tc.envs, tc.istioVersion, "localhost")
 			if diff := cmp.Diff(got, tc.want, protocmp.Transform()); diff != "" {
 				t.Fatalf("the result %s is diff(-got,+want): %s", tc.desc, diff)
 			}

core/manager/option.go

@@ -38,7 +38,7 @@ func DefaultOptions() *Options {
 		XDSSvrConfig: &XDSServerConfig{
 			SvrAddr: IstiodAddr,
 			SvrName: IstiodSvrName,
-			XDSAuth: false,
+			XDSAuth: IstioAuthEnable,
 		},
 		DumpPath: defaultDumpPath,
 	}