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
|
// SPDX-License-Identifier: GPL-3.0-or-later
package kubernetes
import (
"fmt"
"os"
"testing"
"github.com/netdata/netdata/go/plugins/plugin/go.d/agent/discovery/sd/model"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/k8sclient"
"github.com/stretchr/testify/assert"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/fake"
)
var discoveryTags, _ = model.ParseTags("k8s")
func TestMain(m *testing.M) {
_ = os.Setenv(envNodeName, "m01")
_ = os.Setenv(k8sclient.EnvFakeClient, "true")
code := m.Run()
_ = os.Unsetenv(envNodeName)
_ = os.Unsetenv(k8sclient.EnvFakeClient)
os.Exit(code)
}
func TestNewKubeDiscoverer(t *testing.T) {
tests := map[string]struct {
cfg Config
wantErr bool
}{
"pod role config": {
wantErr: false,
cfg: Config{Role: string(rolePod), Tags: "k8s"},
},
"service role config": {
wantErr: false,
cfg: Config{Role: string(roleService), Tags: "k8s"},
},
"empty config": {
wantErr: true,
cfg: Config{},
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
disc, err := NewKubeDiscoverer(test.cfg)
if test.wantErr {
assert.Error(t, err)
assert.Nil(t, disc)
} else {
assert.NoError(t, err)
assert.NotNil(t, disc)
}
})
}
}
func TestKubeDiscoverer_Discover(t *testing.T) {
const prod = "prod"
const dev = "dev"
prodNamespace := newNamespace(prod)
devNamespace := newNamespace(dev)
tests := map[string]struct {
createSim func() discoverySim
}{
"multiple namespaces pod td": {
createSim: func() discoverySim {
httpdProd, nginxProd := newHTTPDPod(), newNGINXPod()
httpdProd.Namespace = prod
nginxProd.Namespace = prod
httpdDev, nginxDev := newHTTPDPod(), newNGINXPod()
httpdDev.Namespace = dev
nginxDev.Namespace = dev
disc, _ := preparePodDiscoverer(
[]string{prod, dev},
prodNamespace, devNamespace, httpdProd, nginxProd, httpdDev, nginxDev)
return discoverySim{
td: disc,
sortBeforeVerify: true,
wantTargetGroups: []model.TargetGroup{
preparePodTargetGroup(httpdDev),
preparePodTargetGroup(nginxDev),
preparePodTargetGroup(httpdProd),
preparePodTargetGroup(nginxProd),
},
}
},
},
"multiple namespaces ClusterIP service td": {
createSim: func() discoverySim {
httpdProd, nginxProd := newHTTPDClusterIPService(), newNGINXClusterIPService()
httpdProd.Namespace = prod
nginxProd.Namespace = prod
httpdDev, nginxDev := newHTTPDClusterIPService(), newNGINXClusterIPService()
httpdDev.Namespace = dev
nginxDev.Namespace = dev
disc, _ := prepareSvcDiscoverer(
[]string{prod, dev},
prodNamespace, devNamespace, httpdProd, nginxProd, httpdDev, nginxDev)
return discoverySim{
td: disc,
sortBeforeVerify: true,
wantTargetGroups: []model.TargetGroup{
prepareSvcTargetGroup(httpdDev),
prepareSvcTargetGroup(nginxDev),
prepareSvcTargetGroup(httpdProd),
prepareSvcTargetGroup(nginxProd),
},
}
},
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
sim := test.createSim()
sim.run(t)
})
}
}
func prepareDiscoverer(role role, namespaces []string, objects ...runtime.Object) (*KubeDiscoverer, kubernetes.Interface) {
client := fake.NewSimpleClientset(objects...)
tags, _ := model.ParseTags("k8s")
disc := &KubeDiscoverer{
tags: tags,
role: role,
namespaces: namespaces,
client: client,
discoverers: nil,
started: make(chan struct{}),
}
return disc, client
}
func newNamespace(name string) *corev1.Namespace {
return &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: name}}
}
func mustCalcHash(obj any) uint64 {
hash, err := calcHash(obj)
if err != nil {
panic(fmt.Sprintf("hash calculation: %v", err))
}
return hash
}
|