-
Notifications
You must be signed in to change notification settings - Fork 784
/
metapipeline.go
410 lines (352 loc) · 12.1 KB
/
metapipeline.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
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
package metapipeline
import (
"fmt"
"path/filepath"
"github.com/jenkins-x/jx/pkg/kube"
"k8s.io/apimachinery/pkg/api/resource"
jenkinsv1 "github.com/jenkins-x/jx/pkg/apis/jenkins.io/v1"
"github.com/jenkins-x/jx/pkg/apps"
"github.com/jenkins-x/jx/pkg/client/clientset/versioned"
"github.com/jenkins-x/jx/pkg/gits"
"github.com/jenkins-x/jx/pkg/tekton"
"github.com/jenkins-x/jx/pkg/tekton/syntax"
"github.com/jenkins-x/jx/pkg/util"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/jenkins-x/jx/pkg/log"
"github.com/pkg/errors"
pipelineapi "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1alpha1"
corev1 "k8s.io/api/core/v1"
)
const (
// MetaPipelineStageName is the name used for the single stage used within a metapipeline
MetaPipelineStageName = "meta-pipeline"
// mergePullRefsStepName is the meta pipeline step name for merging all pull refs into the workspace
mergePullRefsStepName = "merge-pull-refs"
// createEffectivePipelineStepName is the meta pipeline step name for the generation of the effective jenkins-x pipeline config
createEffectivePipelineStepName = "create-effective-pipeline"
// createTektonCRDsStepName is the meta pipeline step name for the Tekton CRD creation
createTektonCRDsStepName = "create-tekton-crds"
tektonBaseDir = "/workspace"
)
// CRDCreationParameters are the parameters needed to create the Tekton CRDs
type CRDCreationParameters struct {
Namespace string
Context string
PipelineName string
PipelineKind PipelineKind
BuildNumber string
GitInfo gits.GitRepository
BranchIdentifier string
PullRef PullRef
SourceDir string
PodTemplates map[string]*corev1.Pod
ServiceAccount string
Labels map[string]string
EnvVars map[string]string
DefaultImage string
Apps []jenkinsv1.App
VersionsDir string
UseBranchAsRevision bool
NoReleasePrepare bool
}
// createMetaPipelineCRDs creates the Tekton CRDs needed to execute the meta pipeline.
// The meta pipeline is responsible to checkout the source repository at the right revision, allows Jenkins-X Apps
// to modify the pipeline (via modifying the configuration on the file system) and finally triggering the actual
// build pipeline.
// An error is returned in case the creation of the Tekton CRDs fails.
func createMetaPipelineCRDs(params CRDCreationParameters) (*tekton.CRDWrapper, error) {
parsedPipeline, err := createPipeline(params)
if err != nil {
return nil, err
}
labels, err := buildLabels(params)
if err != nil {
return nil, err
}
crdParams := syntax.CRDsFromPipelineParams{
PipelineIdentifier: params.PipelineName,
BuildIdentifier: params.BuildNumber,
Namespace: params.Namespace,
PodTemplates: params.PodTemplates,
VersionsDir: params.VersionsDir,
SourceDir: params.SourceDir,
Labels: labels,
DefaultImage: params.DefaultImage,
InterpretMode: false,
}
pipeline, tasks, structure, err := parsedPipeline.GenerateCRDs(crdParams)
if err != nil {
return nil, err
}
revision := params.PullRef.BaseSHA()
if revision == "" {
revision = params.PullRef.BaseBranch()
}
resources := []*pipelineapi.PipelineResource{tekton.GenerateSourceRepoResource(params.PipelineName, ¶ms.GitInfo, revision)}
run := tekton.CreatePipelineRun(resources, pipeline.Name, pipeline.APIVersion, labels, params.ServiceAccount, nil, nil, nil, nil)
tektonCRDs, err := tekton.NewCRDWrapper(pipeline, tasks, resources, structure, run)
if err != nil {
return nil, err
}
return tektonCRDs, nil
}
// getExtendingApps returns the list of apps which are installed in the cluster registered for extending the pipeline.
// An app registers its interest in extending the pipeline by having the 'pipeline-extension' label set.
func getExtendingApps(jxClient versioned.Interface, namespace string) ([]jenkinsv1.App, error) {
listOptions := metav1.ListOptions{}
listOptions.LabelSelector = fmt.Sprintf(apps.AppTypeLabel+" in (%s)", apps.PipelineExtension)
appsList, err := jxClient.JenkinsV1().Apps(namespace).List(listOptions)
if err != nil {
return nil, errors.Wrap(err, "error retrieving pipeline contributor apps")
}
return appsList.Items, nil
}
// createPipeline builds the parsed/typed pipeline which servers as source for the Tekton CRD creation.
func createPipeline(params CRDCreationParameters) (*syntax.ParsedPipeline, error) {
steps, err := buildSteps(params)
if err != nil {
return nil, errors.Wrap(err, "unable to create app extending pipeline steps")
}
stage := syntax.Stage{
Name: MetaPipelineStageName,
Steps: steps,
Agent: &syntax.Agent{
Image: determineDefaultStepImage(params.DefaultImage),
},
Options: &syntax.StageOptions{
RootOptions: &syntax.RootOptions{
ContainerOptions: &corev1.Container{
Resources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
"cpu": resource.MustParse("0.8"),
"memory": resource.MustParse("512Mi"),
},
Requests: corev1.ResourceList{
"cpu": resource.MustParse("0.4"),
"memory": resource.MustParse("256Mi"),
},
},
},
},
},
}
parsedPipeline := &syntax.ParsedPipeline{
Stages: []syntax.Stage{stage},
}
env := buildEnvParams(params)
parsedPipeline.AddContainerEnvVarsToPipeline(env)
return parsedPipeline, nil
}
// buildSteps builds the meta pipeline steps.
// The tasks of the meta pipeline are:
// 1) make sure the right commits are merged
// 2) create the effective pipeline and write it to disk
// 3) one step for each extending app
// 4) create Tekton CRDs for the meta pipeline
func buildSteps(params CRDCreationParameters) ([]syntax.Step, error) {
var steps []syntax.Step
// 1)
step := stepMergePullRefs(params.PullRef)
steps = append(steps, step)
// 2)
step = stepEffectivePipeline(params)
steps = append(steps, step)
// 3)
log.Logger().Debugf("creating pipeline steps for extending apps")
for _, app := range params.Apps {
if app.Spec.PipelineExtension == nil {
log.Logger().Warnf("Skipping app %s in meta pipeline. It contains label %s with value %s, but does not contain PipelineExtension fields.", app.Name, apps.AppTypeLabel, apps.PipelineExtension)
continue
}
extension := app.Spec.PipelineExtension
step := syntax.Step{
Name: extension.Name,
Image: extension.Image,
Command: extension.Command,
Arguments: extension.Args,
}
log.Logger().Debugf("App %s contributes with step %s", app.Name, util.PrettyPrint(step))
steps = append(steps, step)
}
// 4)
step = stepCreateTektonCRDs(params)
steps = append(steps, step)
return steps, nil
}
func stepMergePullRefs(pullRef PullRef) syntax.Step {
// we only need to run the merge step in case there is anything to merge
// Tekton has at this stage the base branch already checked out
if len(pullRef.pullRequests) == 0 {
return stepSkip(mergePullRefsStepName, "Nothing to merge")
}
args := []string{"--verbose", "--baseBranch", pullRef.BaseBranch(), "--baseSHA", pullRef.BaseSHA()}
for _, pr := range pullRef.pullRequests {
args = append(args, "--sha", pr.MergeSHA)
}
step := syntax.Step{
Name: mergePullRefsStepName,
Comment: "Pipeline step merging pull refs",
Command: "jx step git merge",
Arguments: args,
}
return step
}
func stepEffectivePipeline(params CRDCreationParameters) syntax.Step {
args := []string{"--output-dir", "."}
if params.Context != "" {
args = append(args, "--context", params.Context)
}
for _, e := range buildEnvParams(params) {
args = append(args, fmt.Sprintf("--env %s=%s", e.Name, e.Value))
}
step := syntax.Step{
Name: createEffectivePipelineStepName,
Comment: "Pipeline step creating the effective pipeline configuration",
Command: "jx step syntax effective",
Arguments: args,
}
return step
}
func stepCreateTektonCRDs(params CRDCreationParameters) syntax.Step {
args := []string{"--clone-dir", filepath.Join(tektonBaseDir, params.SourceDir)}
args = append(args, "--kind", params.PipelineKind.String())
for _, pr := range params.PullRef.PullRequests() {
args = append(args, "--pr-number", pr.ID)
// there might be a batch build building multiple PRs, in which case we just use the first in this case
break
}
args = append(args, "--service-account", params.ServiceAccount)
args = append(args, "--source", params.SourceDir)
args = append(args, "--branch", params.BranchIdentifier)
args = append(args, "--build-number", params.BuildNumber)
if params.Context != "" {
args = append(args, "--context", params.Context)
}
if params.UseBranchAsRevision {
args = append(args, "--branch-as-revision")
}
if params.NoReleasePrepare {
args = append(args, "--no-release-prepare")
}
for k, v := range params.Labels {
args = append(args, "--label", fmt.Sprintf("%s=%s", k, v))
}
step := syntax.Step{
Name: createTektonCRDsStepName,
Comment: "Pipeline step to create the Tekton CRDs for the actual pipeline run",
Command: "jx step create task",
Arguments: args,
}
return step
}
func stepSkip(stepName string, msg string) syntax.Step {
skipMsg := fmt.Sprintf("SKIP %s: %s", stepName, msg)
step := syntax.Step{
Name: stepName,
Comment: skipMsg,
Command: "echo",
Arguments: []string{fmt.Sprintf("'%s'", skipMsg)},
}
return step
}
func determineDefaultStepImage(defaultImage string) string {
if defaultImage != "" {
return defaultImage
}
return syntax.DefaultContainerImage
}
// buildEnvParams creates a set of environment variables we want to set on the meta pipeline as well as on the
// build pipeline.
// It first builds a list of variables based on the CRDCreationParameters and then appends any custom env variables
// given through params.EnvVars
func buildEnvParams(params CRDCreationParameters) []corev1.EnvVar {
var envVars []corev1.EnvVar
envVars = append(envVars, corev1.EnvVar{
Name: "BUILD_NUMBER",
Value: params.BuildNumber,
})
envVars = append(envVars, corev1.EnvVar{
Name: "PIPELINE_KIND",
Value: params.PipelineKind.String(),
})
envVars = append(envVars, corev1.EnvVar{
Name: "PULL_REFS",
Value: params.PullRef.String(),
})
context := params.Context
if context != "" {
envVars = append(envVars, corev1.EnvVar{
Name: "PIPELINE_CONTEXT",
Value: context,
})
}
gitInfo := params.GitInfo
envVars = append(envVars, corev1.EnvVar{
Name: "SOURCE_URL",
Value: gitInfo.URL,
})
owner := gitInfo.Organisation
if owner != "" {
envVars = append(envVars, corev1.EnvVar{
Name: "REPO_OWNER",
Value: owner,
})
}
repo := gitInfo.Name
if repo != "" {
envVars = append(envVars, corev1.EnvVar{
Name: "REPO_NAME",
Value: repo,
})
// lets keep the APP_NAME environment variable we need for previews
envVars = append(envVars, corev1.EnvVar{
Name: "APP_NAME",
Value: repo,
})
}
branch := params.BranchIdentifier
if branch != "" {
envVars = append(envVars, corev1.EnvVar{
Name: util.EnvVarBranchName,
Value: branch,
})
}
if owner != "" && repo != "" && branch != "" {
jobName := fmt.Sprintf("%s/%s/%s", owner, repo, branch)
envVars = append(envVars, corev1.EnvVar{
Name: "JOB_NAME",
Value: jobName,
})
}
customEnvVars := buildEnvVars(params.EnvVars)
for _, v := range customEnvVars {
// only append if not yes explicitly set
if kube.GetSliceEnvVar(envVars, v.Name) == nil {
envVars = append(envVars, v)
}
}
log.Logger().WithField("env", util.PrettyPrint(envVars)).Debug("meta pipeline env variables")
return envVars
}
func buildLabels(params CRDCreationParameters) (map[string]string, error) {
labels := map[string]string{}
labels[tekton.LabelOwner] = params.GitInfo.Organisation
labels[tekton.LabelRepo] = params.GitInfo.Name
labels[tekton.LabelBranch] = params.BranchIdentifier
if params.Context != "" {
labels[tekton.LabelContext] = params.Context
}
labels[tekton.LabelBuild] = params.BuildNumber
labels[tekton.LabelType] = tekton.MetaPipeline.String()
return util.MergeMaps(labels, params.Labels), nil
}
func buildEnvVars(customEnvVars map[string]string) []corev1.EnvVar {
var envVars []corev1.EnvVar
for key, value := range customEnvVars {
envVars = append(envVars, corev1.EnvVar{
Name: key,
Value: value,
})
}
return envVars
}