forked from target/impeller
-
Notifications
You must be signed in to change notification settings - Fork 0
/
plugin.go
250 lines (224 loc) · 7.35 KB
/
plugin.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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"strconv"
"strings"
"github.com/target/impeller/constants"
"github.com/target/impeller/types"
"github.com/target/impeller/utils"
"github.com/target/impeller/utils/commandbuilder"
)
const (
kubectlBin = "/usr/bin/kubectl"
kubeConfig = "/root/.kube/config"
)
type Plugin struct {
ClusterConfig types.ClusterConfig
ValueFiles []string
KubeConfig string
KubeContext string
Dryrun bool
}
func (p *Plugin) Exec() error {
// Init Kubernetes config
if err := p.setupKubeconfig(); err != nil {
return fmt.Errorf("Error initializing Kubernetes config: %v", err)
}
// Helm init
if err := p.helmInit(); err != nil {
return fmt.Errorf("Error initializing Helm: %v", err)
}
// Add configured repos
for _, repo := range p.ClusterConfig.Helm.Repos {
if err := p.addHelmRepo(repo); err != nil {
return fmt.Errorf("Error adding Helm repo: %v", err)
}
}
if err := p.updateHelmRepos(); err != nil {
return fmt.Errorf("Error updating Helm repos: %v", err)
}
// Install addons
for _, addon := range p.ClusterConfig.Releases {
if err := p.installAddon(&addon); err != nil {
return fmt.Errorf("Error installing addon \"%s\": %v", addon.Name, err)
}
}
return nil
}
func (p *Plugin) addHelmRepo(repo types.HelmRepo) error {
log.Println("Adding Helm repo:", repo.Name)
cb := commandbuilder.CommandBuilder{Name: constants.HelmBin}
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: "repo"})
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: "add"})
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: repo.Name})
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: repo.URL})
if repo.Username != nil {
username, err := repo.Username.GetValue()
if err != nil {
return fmt.Errorf("Could not get username for repo: %v", err)
}
cb.Add(commandbuilder.Arg{
Type: commandbuilder.ArgTypeLongParam,
Name: "username",
Value: username,
ValueSecret: true,
})
}
if repo.Password != nil {
password, err := repo.Password.GetValue()
if err != nil {
return fmt.Errorf("Could not get password for repo: %v", err)
}
cb.Add(commandbuilder.Arg{
Type: commandbuilder.ArgTypeLongParam,
Name: "password",
Value: password,
ValueSecret: true,
})
}
if err := cb.Run(); err != nil {
return fmt.Errorf("Could not add repo \"%s\": %v", repo.Name, err)
}
return nil
}
func (p *Plugin) updateHelmRepos() error {
log.Println("Updating Helm repos")
cmd := exec.Command(constants.HelmBin, "repo", "update")
if err := utils.Run(cmd, true); err != nil {
return fmt.Errorf("Error updating helm repos: %v", err)
}
return nil
}
func (p *Plugin) installAddon(release *types.Release) error {
log.Println("Installing addon:", release.Name, "@", release.Version)
cb := commandbuilder.CommandBuilder{Name: constants.HelmBin}
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: "upgrade"})
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: "--install"})
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: release.Name})
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: release.ChartPath})
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeLongParam, Name: "version", Value: release.Version})
// Add namespaces to command
if release.Namespace != "" {
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeLongParam, Name: "namespace", Value: release.Namespace})
}
if p.ClusterConfig.Helm.Namespace != "" {
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeLongParam, Name: "tiller-namespace", Value: p.ClusterConfig.Helm.Namespace})
}
// Add Overrides
for _, override := range p.overrides(release) {
cb.Add(override)
}
// Dry Run
if p.Dryrun {
log.Println("Running Dry run:", release.Name)
cb.Add(commandbuilder.Arg{Type: commandbuilder.ArgTypeRaw, Value: "--dry-run"})
}
// Execute helm upgrade
if err := cb.Run(); err != nil {
return fmt.Errorf("Error running helm: %v", err)
}
return nil
}
func (p *Plugin) setupKubeconfig() error {
log.Println("Creating Kubernetes config")
if p.KubeConfig != "" {
if err := ioutil.WriteFile(kubeConfig, []byte(p.KubeConfig), 0644); err != nil {
return fmt.Errorf("Error creating kube config file: %v", err)
}
}
cmd := exec.Command(kubectlBin, "config", "use-context", p.KubeContext)
if err := utils.Run(cmd, true); err != nil {
return fmt.Errorf("Error setting Kubernetes context: %v", err)
}
return nil
}
func (p *Plugin) helmInit() error {
log.Println("Initializing Helm")
cmd := []string{"init", "--debug"}
if p.ClusterConfig.Helm.MaxHistory > 0 {
cmd = append(cmd, "--history-max", strconv.Itoa(p.ClusterConfig.Helm.MaxHistory))
}
if p.ClusterConfig.Helm.Upgrade {
cmd = append(cmd, "--upgrade")
}
if p.ClusterConfig.Helm.Namespace != "" {
cmd = append(cmd, "--tiller-namespace", p.ClusterConfig.Helm.Namespace)
}
if len(p.ClusterConfig.Helm.Overrides) > 0 {
overrides := []string{}
for overrideKey, overrideValue := range p.ClusterConfig.Helm.Overrides {
overrides = append(overrides, fmt.Sprintf("'%v'='%v'", overrideKey, overrideValue))
}
cmd = append(cmd, "--override", strings.Join(overrides, ","))
}
if p.Dryrun {
cmd = append(cmd, "--client-only")
}
if err := utils.Run(exec.Command(constants.HelmBin, cmd...), true); err != nil {
return err
}
return utils.PollTiller(10, p.ClusterConfig.Helm.Namespace)
}
func (p *Plugin) overrides(release *types.Release) (args []commandbuilder.Arg) {
// Add override files
for _, fileName := range p.ValueFiles {
log.Println("Adding override file:", fileName)
args = append(args, commandbuilder.Arg{
Type: commandbuilder.ArgTypeShortParam,
Name: "f",
Value: strings.TrimSpace(fileName)})
}
path := fmt.Sprintf("values/%s/default.yaml", release.Name)
if _, err := os.Stat(path); err == nil {
log.Println("Adding override file:", path)
args = append(args, commandbuilder.Arg{
Type: commandbuilder.ArgTypeShortParam,
Name: "f",
Value: path})
}
for _, path := range release.ValueFiles {
if _, err := os.Stat(path); err != nil {
log.Println("WARN: Value file does not exist:", path)
continue
}
log.Println("Adding override file:", path)
args = append(args, commandbuilder.Arg{
Type: commandbuilder.ArgTypeShortParam,
Name: "f",
Value: path})
}
path = fmt.Sprintf("values/%s/%s.yaml", release.Name, p.ClusterConfig.Name)
if _, err := os.Stat(path); p.ClusterConfig.Name != "" && err == nil {
log.Println("Adding override file:", path)
args = append(args, commandbuilder.Arg{
Type: commandbuilder.ArgTypeShortParam,
Name: "f",
Value: path})
}
// Handle individual value overrides
setValues := []string{}
for _, override := range release.Overrides {
log.Println("Overriding value for:", override.Target)
overrideValue, err := override.GetValue()
if err != nil {
log.Println("WARNING: Could not get override value. Skipping override:", err)
continue
}
if overrideValue == "" {
log.Println("WARNING: Override value is blank.")
}
setValues = append(setValues, fmt.Sprintf("%s=%s", override.Target, overrideValue))
}
if len(setValues) > 0 {
args = append(args, commandbuilder.Arg{
Type: commandbuilder.ArgTypeLongParam,
Name: "set",
Value: strings.Join(setValues, ","),
ValueSecret: true})
}
return args
}