k8s.io/kubernetes@v1.29.3/pkg/kubelet/envvars/envvars_test.go

/*
Copyright 2014 The Kubernetes Authors.

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 envvars_test

import (
	"reflect"
	"testing"

	"k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/kubernetes/pkg/kubelet/envvars"
)

func TestFromServices(t *testing.T) {
	sl := []*v1.Service{
		{
			ObjectMeta: metav1.ObjectMeta{Name: "foo-bar"},
			Spec: v1.ServiceSpec{
				Selector:  map[string]string{"bar": "baz"},
				ClusterIP: "1.2.3.4",
				Ports: []v1.ServicePort{
					{Port: 8080, Protocol: "TCP"},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "abc-123"},
			Spec: v1.ServiceSpec{
				Selector:  map[string]string{"bar": "baz"},
				ClusterIP: "5.6.7.8",
				Ports: []v1.ServicePort{
					{Name: "u-d-p", Port: 8081, Protocol: "UDP"},
					{Name: "t-c-p", Port: 8081, Protocol: "TCP"},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "q-u-u-x"},
			Spec: v1.ServiceSpec{
				Selector:  map[string]string{"bar": "baz"},
				ClusterIP: "9.8.7.6",
				Ports: []v1.ServicePort{
					{Port: 8082, Protocol: "TCP"},
					{Name: "8083", Port: 8083, Protocol: "TCP"},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "svrc-clusterip-none"},
			Spec: v1.ServiceSpec{
				Selector:  map[string]string{"bar": "baz"},
				ClusterIP: "None",
				Ports: []v1.ServicePort{
					{Port: 8082, Protocol: "TCP"},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "svrc-clusterip-empty"},
			Spec: v1.ServiceSpec{
				Selector:  map[string]string{"bar": "baz"},
				ClusterIP: "",
				Ports: []v1.ServicePort{
					{Port: 8082, Protocol: "TCP"},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "super-ipv6"},
			Spec: v1.ServiceSpec{
				Selector:  map[string]string{"bar": "baz"},
				ClusterIP: "2001:DB8::",
				Ports: []v1.ServicePort{
					{Name: "u-d-p", Port: 8084, Protocol: "UDP"},
					{Name: "t-c-p", Port: 8084, Protocol: "TCP"},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "sctp-1"},
			Spec: v1.ServiceSpec{
				Selector:  map[string]string{"bar": "sctp-sel"},
				ClusterIP: "1.2.3.4",
				Ports: []v1.ServicePort{
					{Port: 777, Protocol: "SCTP"},
				},
			},
		},
	}
	vars := envvars.FromServices(sl)
	expected := []v1.EnvVar{
		{Name: "FOO_BAR_SERVICE_HOST", Value: "1.2.3.4"},
		{Name: "FOO_BAR_SERVICE_PORT", Value: "8080"},
		{Name: "FOO_BAR_PORT", Value: "tcp://1.2.3.4:8080"},
		{Name: "FOO_BAR_PORT_8080_TCP", Value: "tcp://1.2.3.4:8080"},
		{Name: "FOO_BAR_PORT_8080_TCP_PROTO", Value: "tcp"},
		{Name: "FOO_BAR_PORT_8080_TCP_PORT", Value: "8080"},
		{Name: "FOO_BAR_PORT_8080_TCP_ADDR", Value: "1.2.3.4"},
		{Name: "ABC_123_SERVICE_HOST", Value: "5.6.7.8"},
		{Name: "ABC_123_SERVICE_PORT", Value: "8081"},
		{Name: "ABC_123_SERVICE_PORT_U_D_P", Value: "8081"},
		{Name: "ABC_123_SERVICE_PORT_T_C_P", Value: "8081"},
		{Name: "ABC_123_PORT", Value: "udp://5.6.7.8:8081"},
		{Name: "ABC_123_PORT_8081_UDP", Value: "udp://5.6.7.8:8081"},
		{Name: "ABC_123_PORT_8081_UDP_PROTO", Value: "udp"},
		{Name: "ABC_123_PORT_8081_UDP_PORT", Value: "8081"},
		{Name: "ABC_123_PORT_8081_UDP_ADDR", Value: "5.6.7.8"},
		{Name: "ABC_123_PORT_8081_TCP", Value: "tcp://5.6.7.8:8081"},
		{Name: "ABC_123_PORT_8081_TCP_PROTO", Value: "tcp"},
		{Name: "ABC_123_PORT_8081_TCP_PORT", Value: "8081"},
		{Name: "ABC_123_PORT_8081_TCP_ADDR", Value: "5.6.7.8"},
		{Name: "Q_U_U_X_SERVICE_HOST", Value: "9.8.7.6"},
		{Name: "Q_U_U_X_SERVICE_PORT", Value: "8082"},
		{Name: "Q_U_U_X_SERVICE_PORT_8083", Value: "8083"},
		{Name: "Q_U_U_X_PORT", Value: "tcp://9.8.7.6:8082"},
		{Name: "Q_U_U_X_PORT_8082_TCP", Value: "tcp://9.8.7.6:8082"},
		{Name: "Q_U_U_X_PORT_8082_TCP_PROTO", Value: "tcp"},
		{Name: "Q_U_U_X_PORT_8082_TCP_PORT", Value: "8082"},
		{Name: "Q_U_U_X_PORT_8082_TCP_ADDR", Value: "9.8.7.6"},
		{Name: "Q_U_U_X_PORT_8083_TCP", Value: "tcp://9.8.7.6:8083"},
		{Name: "Q_U_U_X_PORT_8083_TCP_PROTO", Value: "tcp"},
		{Name: "Q_U_U_X_PORT_8083_TCP_PORT", Value: "8083"},
		{Name: "Q_U_U_X_PORT_8083_TCP_ADDR", Value: "9.8.7.6"},
		{Name: "SUPER_IPV6_SERVICE_HOST", Value: "2001:DB8::"},
		{Name: "SUPER_IPV6_SERVICE_PORT", Value: "8084"},
		{Name: "SUPER_IPV6_SERVICE_PORT_U_D_P", Value: "8084"},
		{Name: "SUPER_IPV6_SERVICE_PORT_T_C_P", Value: "8084"},
		{Name: "SUPER_IPV6_PORT", Value: "udp://[2001:DB8::]:8084"},
		{Name: "SUPER_IPV6_PORT_8084_UDP", Value: "udp://[2001:DB8::]:8084"},
		{Name: "SUPER_IPV6_PORT_8084_UDP_PROTO", Value: "udp"},
		{Name: "SUPER_IPV6_PORT_8084_UDP_PORT", Value: "8084"},
		{Name: "SUPER_IPV6_PORT_8084_UDP_ADDR", Value: "2001:DB8::"},
		{Name: "SUPER_IPV6_PORT_8084_TCP", Value: "tcp://[2001:DB8::]:8084"},
		{Name: "SUPER_IPV6_PORT_8084_TCP_PROTO", Value: "tcp"},
		{Name: "SUPER_IPV6_PORT_8084_TCP_PORT", Value: "8084"},
		{Name: "SUPER_IPV6_PORT_8084_TCP_ADDR", Value: "2001:DB8::"},
		{Name: "SCTP_1_SERVICE_HOST", Value: "1.2.3.4"},
		{Name: "SCTP_1_SERVICE_PORT", Value: "777"},
		{Name: "SCTP_1_PORT", Value: "sctp://1.2.3.4:777"},
		{Name: "SCTP_1_PORT_777_SCTP", Value: "sctp://1.2.3.4:777"},
		{Name: "SCTP_1_PORT_777_SCTP_PROTO", Value: "sctp"},
		{Name: "SCTP_1_PORT_777_SCTP_PORT", Value: "777"},
		{Name: "SCTP_1_PORT_777_SCTP_ADDR", Value: "1.2.3.4"},
	}
	if len(vars) != len(expected) {
		t.Errorf("Expected %d env vars, got: %+v", len(expected), vars)
		return
	}
	for i := range expected {
		if !reflect.DeepEqual(vars[i], expected[i]) {
			t.Errorf("expected %#v, got %#v", vars[i], expected[i])
		}
	}
}