-
Notifications
You must be signed in to change notification settings - Fork 13
/
kubernetes.go
167 lines (140 loc) · 4.52 KB
/
kubernetes.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
package kubernetes
import (
"context"
"errors"
"fmt"
"strings"
networkingv1 "k8s.io/api/networking/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
)
type Kubernetes struct {
client *kubernetes.Clientset
dynamicClient dynamic.Interface
namespace string
}
func NewKubernetes(configFilePath, namespace string) *Kubernetes {
// load config from file or create the in-cluster config if path is empty
config, err := clientcmd.BuildConfigFromFlags("", configFilePath)
if err != nil {
panic(err.Error())
}
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
panic(err.Error())
}
dynamicClient, err := dynamic.NewForConfig(config)
if err != nil {
panic(err)
}
return &Kubernetes{
client: clientset,
dynamicClient: dynamicClient,
namespace: namespace,
}
}
func (k *Kubernetes) IsCertificateProvisioned(ctx context.Context, secretName string) (bool, error) {
deploymentRes := schema.GroupVersionResource{Group: "cert-manager.io", Version: "v1", Resource: "certificates"}
result, getErr := k.dynamicClient.Resource(deploymentRes).Namespace(k.namespace).Get(ctx, secretName, metav1.GetOptions{})
if getErr != nil {
return false, fmt.Errorf("failed to get the latest version of Deployment: %v", getErr)
}
if statusObject, exists := result.Object["status"]; exists {
if statusObject, ok := statusObject.(map[string]interface{}); ok {
if conditionsObject, exists := statusObject["conditions"]; exists {
if conditionsObject, ok := conditionsObject.([]interface{}); ok && len(conditionsObject) > 0 {
if conditionsObject, ok := conditionsObject[0].(map[string]interface{}); ok {
status := conditionsObject["status"].(string)
message := conditionsObject["message"].(string)
if status == "True" {
return true, nil
}
return false, errors.New(message)
}
}
}
}
}
return false, errors.New("unknown error happened. try again")
}
func (k *Kubernetes) GetIngressDomains(ctx context.Context) ([]string, error) {
ingresses, err := k.client.NetworkingV1().Ingresses(k.namespace).List(ctx, metav1.ListOptions{})
if err != nil {
return nil, err
}
domains := make([]string, 0, len(ingresses.Items))
for _, ingress := range ingresses.Items {
for _, tls := range ingress.Spec.TLS {
domains = append(domains, tls.Hosts...)
}
}
return domains, nil
}
func (k *Kubernetes) AddIngress(ctx context.Context, domain, secretName, serviceName, servicePortName string, annotations map[string]string) error {
domain = strings.TrimSpace(strings.ToLower(domain))
// TODO: Validate host
pathType := networkingv1.PathTypeImplementationSpecific
ingress := &networkingv1.Ingress{
TypeMeta: metav1.TypeMeta{
Kind: "Ingress",
APIVersion: networkingv1.SchemeGroupVersion.String(),
},
ObjectMeta: metav1.ObjectMeta{
Name: domain,
Namespace: k.namespace,
Annotations: annotations,
},
Spec: networkingv1.IngressSpec{
TLS: []networkingv1.IngressTLS{
{
Hosts: []string{domain},
SecretName: secretName,
},
},
Rules: []networkingv1.IngressRule{
{
Host: domain,
IngressRuleValue: networkingv1.IngressRuleValue{
HTTP: &networkingv1.HTTPIngressRuleValue{
Paths: []networkingv1.HTTPIngressPath{
{
Path: "/",
PathType: &pathType,
Backend: networkingv1.IngressBackend{
Service: &networkingv1.IngressServiceBackend{
Name: serviceName,
Port: networkingv1.ServiceBackendPort{
Name: servicePortName,
},
},
},
},
},
},
},
},
},
},
Status: networkingv1.IngressStatus{},
}
_, err := k.client.NetworkingV1().Ingresses(k.namespace).Create(ctx, ingress, metav1.CreateOptions{})
if apierrors.IsAlreadyExists(err) {
// ignore already exist error
return nil // TODO: or we can return fmt.Errorf("%s has already been registered", domain)
}
return err
}
func (k *Kubernetes) RemoveIngress(ctx context.Context, domain string) error {
domain = strings.TrimSpace(strings.ToLower(domain))
// TODO: Validate host
err := k.client.NetworkingV1().Ingresses(k.namespace).Delete(ctx, domain, metav1.DeleteOptions{})
if apierrors.IsNotFound(err) {
// ignore already exist error
return nil // TODO: or we can return fmt.Errorf("%s has not been registered", domain)
}
return err
}