forked from hunchback/helm
-
Notifications
You must be signed in to change notification settings - Fork 0
/
release_update.go
312 lines (267 loc) · 9.44 KB
/
release_update.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
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
/*
Copyright The Helm 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 tiller
import (
"fmt"
"strings"
ctx "golang.org/x/net/context"
"k8s.io/helm/pkg/chartutil"
"k8s.io/helm/pkg/hooks"
"k8s.io/helm/pkg/proto/hapi/release"
"k8s.io/helm/pkg/proto/hapi/services"
"k8s.io/helm/pkg/timeconv"
)
// UpdateRelease takes an existing release and new information, and upgrades the release.
func (s *ReleaseServer) UpdateRelease(c ctx.Context, req *services.UpdateReleaseRequest) (*services.UpdateReleaseResponse, error) {
if err := validateReleaseName(req.Name); err != nil {
s.Log("updateRelease: Release name is invalid: %s", req.Name)
return nil, err
}
s.Log("preparing update for %s", req.Name)
currentRelease, updatedRelease, err := s.prepareUpdate(req)
if err != nil {
s.Log("failed to prepare update: %s", err)
if req.Force {
// Use the --force, Luke.
s.Log("performing force update for %s", req.Name)
return s.performUpdateForce(req)
}
return nil, err
}
if !req.DryRun {
s.Log("creating updated release for %s", req.Name)
if err := s.env.Releases.Create(updatedRelease); err != nil {
return nil, err
}
}
s.Log("performing update for %s", req.Name)
res, err := s.performUpdate(currentRelease, updatedRelease, req)
if err != nil {
return res, err
}
if !req.DryRun {
s.Log("updating status for updated release for %s", req.Name)
if err := s.env.Releases.Update(updatedRelease); err != nil {
return res, err
}
}
return res, nil
}
// prepareUpdate builds an updated release for an update operation.
func (s *ReleaseServer) prepareUpdate(req *services.UpdateReleaseRequest) (*release.Release, *release.Release, error) {
if req.Chart == nil {
return nil, nil, errMissingChart
}
// finds the deployed release with the given name
currentRelease, err := s.env.Releases.Deployed(req.Name)
if err != nil {
return nil, nil, err
}
// determine if values will be reused
if err := s.reuseValues(req, currentRelease); err != nil {
return nil, nil, err
}
// finds the non-deleted release with the given name
lastRelease, err := s.env.Releases.Last(req.Name)
if err != nil {
return nil, nil, err
}
// Increment revision count. This is passed to templates, and also stored on
// the release object.
revision := lastRelease.Version + 1
ts := timeconv.Now()
options := chartutil.ReleaseOptions{
Name: req.Name,
Time: ts,
Namespace: currentRelease.Namespace,
IsUpgrade: true,
Revision: int(revision),
}
caps, err := capabilities(s.clientset.Discovery())
if err != nil {
return nil, nil, err
}
valuesToRender, err := chartutil.ToRenderValuesCaps(req.Chart, req.Values, options, caps)
if err != nil {
return nil, nil, err
}
hooks, manifestDoc, notesTxt, err := s.renderResources(req.Chart, valuesToRender, req.SubNotes, caps.APIVersions)
if err != nil {
return nil, nil, err
}
// Store an updated release.
updatedRelease := &release.Release{
Name: req.Name,
Namespace: currentRelease.Namespace,
Chart: req.Chart,
Config: req.Values,
Info: &release.Info{
FirstDeployed: currentRelease.Info.FirstDeployed,
LastDeployed: ts,
Status: &release.Status{Code: release.Status_PENDING_UPGRADE},
Description: "Preparing upgrade", // This should be overwritten later.
},
Version: revision,
Manifest: manifestDoc.String(),
Hooks: hooks,
}
if len(notesTxt) > 0 {
updatedRelease.Info.Status.Notes = notesTxt
}
err = validateManifest(s.env.KubeClient, currentRelease.Namespace, manifestDoc.Bytes())
return currentRelease, updatedRelease, err
}
// performUpdateForce performs the same action as a `helm delete && helm install --replace`.
func (s *ReleaseServer) performUpdateForce(req *services.UpdateReleaseRequest) (*services.UpdateReleaseResponse, error) {
// find the last release with the given name
oldRelease, err := s.env.Releases.Last(req.Name)
if err != nil {
return nil, err
}
res := &services.UpdateReleaseResponse{}
newRelease, err := s.prepareRelease(&services.InstallReleaseRequest{
Chart: req.Chart,
Values: req.Values,
DryRun: req.DryRun,
Name: req.Name,
DisableHooks: req.DisableHooks,
Namespace: oldRelease.Namespace,
ReuseName: true,
Timeout: req.Timeout,
Wait: req.Wait,
})
if err != nil {
s.Log("failed update prepare step: %s", err)
// On dry run, append the manifest contents to a failed release. This is
// a stop-gap until we can revisit an error backchannel post-2.0.
if req.DryRun && strings.HasPrefix(err.Error(), "YAML parse error") {
err = fmt.Errorf("%s\n%s", err, newRelease.Manifest)
}
return res, err
}
// update new release with next revision number so as to append to the old release's history
newRelease.Version = oldRelease.Version + 1
res.Release = newRelease
if req.DryRun {
s.Log("dry run for %s", newRelease.Name)
res.Release.Info.Description = "Dry run complete"
return res, nil
}
// From here on out, the release is considered to be in Status_DELETING or Status_DELETED
// state. There is no turning back.
oldRelease.Info.Status.Code = release.Status_DELETING
oldRelease.Info.Deleted = timeconv.Now()
oldRelease.Info.Description = "Deletion in progress (or silently failed)"
s.recordRelease(oldRelease, true)
// pre-delete hooks
if !req.DisableHooks {
if err := s.execHook(oldRelease.Hooks, oldRelease.Name, oldRelease.Namespace, hooks.PreDelete, req.Timeout); err != nil {
return res, err
}
} else {
s.Log("hooks disabled for %s", req.Name)
}
// delete manifests from the old release
_, errs := s.ReleaseModule.Delete(oldRelease, nil, s.env)
oldRelease.Info.Status.Code = release.Status_DELETED
oldRelease.Info.Description = "Deletion complete"
s.recordRelease(oldRelease, true)
if len(errs) > 0 {
es := make([]string, 0, len(errs))
for _, e := range errs {
s.Log("error: %v", e)
es = append(es, e.Error())
}
return res, fmt.Errorf("Upgrade --force successfully deleted the previous release, but encountered %d error(s) and cannot continue: %s", len(es), strings.Join(es, "; "))
}
// post-delete hooks
if !req.DisableHooks {
if err := s.execHook(oldRelease.Hooks, oldRelease.Name, oldRelease.Namespace, hooks.PostDelete, req.Timeout); err != nil {
return res, err
}
}
// pre-install hooks
if !req.DisableHooks {
if err := s.execHook(newRelease.Hooks, newRelease.Name, newRelease.Namespace, hooks.PreInstall, req.Timeout); err != nil {
return res, err
}
}
s.recordRelease(newRelease, false)
if err := s.ReleaseModule.Update(oldRelease, newRelease, req, s.env); err != nil {
msg := fmt.Sprintf("Upgrade %q failed: %s", newRelease.Name, err)
s.Log("warning: %s", msg)
newRelease.Info.Status.Code = release.Status_FAILED
newRelease.Info.Description = msg
s.recordRelease(newRelease, true)
return res, err
}
// post-install hooks
if !req.DisableHooks {
if err := s.execHook(newRelease.Hooks, newRelease.Name, newRelease.Namespace, hooks.PostInstall, req.Timeout); err != nil {
msg := fmt.Sprintf("Release %q failed post-install: %s", newRelease.Name, err)
s.Log("warning: %s", msg)
newRelease.Info.Status.Code = release.Status_FAILED
newRelease.Info.Description = msg
s.recordRelease(newRelease, true)
return res, err
}
}
newRelease.Info.Status.Code = release.Status_DEPLOYED
if req.Description == "" {
newRelease.Info.Description = "Upgrade complete"
} else {
newRelease.Info.Description = req.Description
}
s.recordRelease(newRelease, true)
return res, nil
}
func (s *ReleaseServer) performUpdate(originalRelease, updatedRelease *release.Release, req *services.UpdateReleaseRequest) (*services.UpdateReleaseResponse, error) {
res := &services.UpdateReleaseResponse{Release: updatedRelease}
if req.DryRun {
s.Log("dry run for %s", updatedRelease.Name)
res.Release.Info.Description = "Dry run complete"
return res, nil
}
// pre-upgrade hooks
if !req.DisableHooks {
if err := s.execHook(updatedRelease.Hooks, updatedRelease.Name, updatedRelease.Namespace, hooks.PreUpgrade, req.Timeout); err != nil {
return res, err
}
} else {
s.Log("update hooks disabled for %s", req.Name)
}
if err := s.ReleaseModule.Update(originalRelease, updatedRelease, req, s.env); err != nil {
msg := fmt.Sprintf("Upgrade %q failed: %s", updatedRelease.Name, err)
s.Log("warning: %s", msg)
updatedRelease.Info.Status.Code = release.Status_FAILED
updatedRelease.Info.Description = msg
s.recordRelease(originalRelease, true)
s.recordRelease(updatedRelease, true)
return res, err
}
// post-upgrade hooks
if !req.DisableHooks {
if err := s.execHook(updatedRelease.Hooks, updatedRelease.Name, updatedRelease.Namespace, hooks.PostUpgrade, req.Timeout); err != nil {
return res, err
}
}
originalRelease.Info.Status.Code = release.Status_SUPERSEDED
s.recordRelease(originalRelease, true)
updatedRelease.Info.Status.Code = release.Status_DEPLOYED
if req.Description == "" {
updatedRelease.Info.Description = "Upgrade complete"
} else {
updatedRelease.Info.Description = req.Description
}
return res, nil
}