/
webhook.go
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/
webhook.go
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package v1alpha1
import (
"context"
"fmt"
"strings"
"time"
"github.com/caicloud/nirvana/log"
"github.com/caicloud/nirvana/service"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/rand"
"github.com/caicloud/cyclone/pkg/apis/cyclone/v1alpha1"
"github.com/caicloud/cyclone/pkg/meta"
api "github.com/caicloud/cyclone/pkg/server/apis/v1alpha1"
"github.com/caicloud/cyclone/pkg/server/biz/accelerator"
"github.com/caicloud/cyclone/pkg/server/biz/hook"
"github.com/caicloud/cyclone/pkg/server/biz/scm"
"github.com/caicloud/cyclone/pkg/server/biz/scm/bitbucket"
"github.com/caicloud/cyclone/pkg/server/biz/scm/github"
"github.com/caicloud/cyclone/pkg/server/biz/scm/gitlab"
"github.com/caicloud/cyclone/pkg/server/biz/scm/svn"
"github.com/caicloud/cyclone/pkg/server/common"
"github.com/caicloud/cyclone/pkg/server/handler"
"github.com/caicloud/cyclone/pkg/util"
"github.com/caicloud/cyclone/pkg/util/cerr"
)
const (
succeededMsg = "Successfully triggered"
ignoredMsg = "Is ignored"
)
type task struct {
Tenant string
Trigger v1alpha1.WorkflowTrigger
EventData *scm.EventData
}
var taskQueue = make(chan task, 10)
func init() {
go webhookWorker(taskQueue)
}
func webhookWorker(tasks <-chan task) {
for t := range tasks {
err := createWorkflowRun(t.Tenant, t.Trigger, t.EventData)
if err != nil {
log.Errorf("wft %s create workflow run error:%v", t.Trigger.Name, err)
}
}
}
func newWebhookResponse(msg string) api.WebhookResponse {
return api.WebhookResponse{
Message: msg,
}
}
// HandleWebhook handles webhooks from integrated systems.
func HandleWebhook(ctx context.Context, tenant, eventType, integration string) (api.WebhookResponse, error) {
if eventType != string(v1alpha1.TriggerTypeSCM) {
err := fmt.Errorf("eventType %s unsupported, support SCM for now", eventType)
return newWebhookResponse(err.Error()), err
}
request := service.HTTPContextFrom(ctx).Request()
var data *scm.EventData
if request.Header.Get(github.EventTypeHeader) != "" {
in, err := getIntegration(common.TenantNamespace(tenant), integration)
if err != nil {
return newWebhookResponse(err.Error()), err
}
data = github.ParseEvent(in.Spec.SCM, request)
}
if request.Header.Get(gitlab.EventTypeHeader) != "" {
data = gitlab.ParseEvent(request)
}
if request.Header.Get(bitbucket.EventTypeHeader) != "" {
in, err := getIntegration(common.TenantNamespace(tenant), integration)
if err != nil {
return newWebhookResponse(err.Error()), err
}
data = bitbucket.ParseEvent(in.Spec.SCM, request)
}
if request.Header.Get(svn.EventTypeHeader) != "" {
data = svn.ParseEvent(request)
}
if data == nil {
return newWebhookResponse(ignoredMsg), nil
}
// convert the time to UTC timezone
data.CreatedAt = data.CreatedAt.UTC()
wfts, err := hook.ListSCMWfts(tenant, data.Repo, integration)
if err != nil {
return newWebhookResponse(err.Error()), err
}
triggeredWfts := make([]string, 0)
for _, wft := range wfts.Items {
log.Infof("Trigger workflow trigger %s", wft.Name)
taskQueue <- task{
Tenant: tenant,
Trigger: wft,
EventData: data,
}
triggeredWfts = append(triggeredWfts, wft.Name)
}
if len(triggeredWfts) > 0 {
return newWebhookResponse(fmt.Sprintf("%s: %s", succeededMsg, triggeredWfts)), nil
}
return newWebhookResponse(ignoredMsg), nil
}
func sanitizeRef(ref string) string {
ret := make([]rune, 0, len(ref))
for _, ch := range ref {
switch {
case ch >= 'a' && ch <= 'z':
case ch >= 'A' && ch <= 'Z':
case ch >= '0' && ch <= '9':
default:
ch = '_'
}
ret = append(ret, ch)
}
return string(ret)
}
func createWorkflowRun(tenant string, wft v1alpha1.WorkflowTrigger, data *scm.EventData) error {
ns := wft.Namespace
cancelPrevious := false
var err error
var project string
if wft.Labels != nil {
project = wft.Labels[meta.LabelProjectName]
}
if project == "" {
return fmt.Errorf("failed to get project from workflowtrigger labels")
}
wfName := wft.Spec.WorkflowRef.Name
if wfName == "" {
return fmt.Errorf("workflow reference of workflowtrigger is empty")
}
trigger := false
var tag string
st := wft.Spec.SCM
switch data.Type {
case scm.TagReleaseEventType:
if st.TagRelease.Enabled {
trigger = true
tag = data.Ref
// If tag contains "/", trim it.
if index := strings.LastIndex(tag, "/"); index >= 0 && len(tag) > index+1 {
tag = tag[index+1:]
}
}
case scm.PushEventType:
trimmedBranch := data.Branch
if index := strings.LastIndex(trimmedBranch, "/"); index >= 0 && len(trimmedBranch) > index+1 {
trimmedBranch = trimmedBranch[index+1:]
}
for _, branch := range st.Push.Branches {
if branch == trimmedBranch {
trigger = true
break
}
}
case scm.PullRequestEventType:
log.Infof("target branch name: %s", data.Branch)
if !st.PullRequest.Enabled {
break
}
// Always trigger if Branches are not specified
if len(st.PullRequest.Branches) == 0 {
trigger = true
cancelPrevious = true
break
}
for _, branch := range st.PullRequest.Branches {
if branch == data.Branch {
trigger = true
cancelPrevious = true
break
}
}
case scm.PullRequestCommentEventType:
for _, comment := range st.PullRequestComment.Comments {
if comment == data.Comment {
trigger = true
cancelPrevious = true
break
}
}
case scm.PostCommitEventType:
if !st.PostCommit.Enabled {
break
}
// For Backward Compatibility, old version workflowTriggers lack of these field
// and can normally trigger workflow
if st.PostCommit.RootURL == "" || st.PostCommit.WorkflowURL == "" ||
data.ChangedFiles == nil || len(data.ChangedFiles) == 0 {
trigger = true
break
}
for _, file := range data.ChangedFiles {
fullPath := st.PostCommit.RootURL + "/" + file
if strings.Contains(fullPath, st.PostCommit.WorkflowURL) {
trigger = true
break
}
}
}
if !trigger {
return nil
}
cycloneClient := handler.K8sClient.CycloneV1alpha1()
ctx := context.TODO()
skipCurrent := false
ref := sanitizeRef(data.Ref)
var currentWfrs []v1alpha1.WorkflowRun
if cancelPrevious {
wfrs, err := cycloneClient.WorkflowRuns(ns).List(ctx, metav1.ListOptions{
LabelSelector: fmt.Sprintf("%s=%s,%s=%s,%s=%s",
meta.LabelProjectName, project,
meta.LabelWorkflowName, wfName,
meta.LabelWorkflowRunPRRef, ref),
})
if err != nil {
log.Warningf("Fail to list previous WorkflowRuns: %v. project=%s, workflow=%s, trigger=%s", err,
project, wfName, data.Type)
} else if !data.CreatedAt.IsZero() {
for _, item := range wfrs.Items {
if len(item.Annotations) == 0 {
continue
}
evtType := scm.EventType(item.Annotations[meta.AnnotationWorkflowRunTrigger])
if util.IsWorkflowRunTerminated(&item) ||
(evtType != scm.PullRequestEventType && evtType != scm.PullRequestCommentEventType) {
continue
}
currentWfrs = append(currentWfrs, item)
updatedAtStr := item.Annotations[meta.AnnotationWorkflowRunPRUpdatedAt]
if len(updatedAtStr) == 0 {
continue
}
updatedAt, err := time.Parse(time.RFC3339, updatedAtStr)
if err != nil {
log.Warningf("Fail to parse pr-updated-at: %s: %v. ns=%s, wfr=%s", updatedAtStr, err,
item.Namespace, item.Name)
continue
}
if updatedAt.After(data.CreatedAt) {
skipCurrent = true
log.Infof("There is already running workflowRun for PR %s. Ignore this event. Existing wfr is %s/%s", data.Ref, item.Namespace, item.Name)
break
}
}
} else {
log.Infof("The update time of PR %s/%s is unknown. Turn off canceling previous builds.", data.Repo, data.Ref)
cancelPrevious = false
}
}
if skipCurrent {
return nil
}
log.Infof("Trigger wft %s with event data: %v", wft.Name, data)
name := fmt.Sprintf("%s-%s", wfName, rand.String(5))
// Create workflowrun.
wfr := &v1alpha1.WorkflowRun{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Annotations: map[string]string{
meta.AnnotationWorkflowRunPRUpdatedAt: data.CreatedAt.Format(time.RFC3339),
meta.AnnotationWorkflowRunTrigger: string(data.Type),
meta.AnnotationAlias: name,
},
Labels: map[string]string{
meta.LabelProjectName: project,
meta.LabelWorkflowName: wfName,
meta.LabelWorkflowRunAcceleration: wft.Labels[meta.LabelWorkflowRunAcceleration],
meta.LabelWorkflowRunPRRef: ref,
},
},
Spec: wft.Spec.WorkflowRunSpec,
}
wfr.Annotations, err = setSCMEventData(wfr.Annotations, data)
if err != nil {
return err
}
// Set "Tag" and "SCM_REVISION" for all resource configs.
for _, r := range wft.Spec.WorkflowRunSpec.ResourceParams {
for i, p := range r.Parameters {
if p.Name == "TAG" && tag != "" {
r.Parameters[i].Value = &tag
}
if p.Name == "SCM_REVISION" && data.Ref != "" {
r.Parameters[i].Value = &data.Ref
}
}
}
// Set "Tag" for all stage configs.
for _, s := range wft.Spec.WorkflowRunSpec.StageParams {
for i, p := range s.Parameters {
if p.Name == "tag" && tag != "" {
s.Parameters[i].Value = &tag
}
}
}
accelerator.NewAccelerator(tenant, project, wfr).Accelerate()
_, err = cycloneClient.WorkflowRuns(ns).Create(ctx, wfr, metav1.CreateOptions{})
if err != nil {
return cerr.ConvertK8sError(err)
}
go func(wfrCopy *v1alpha1.WorkflowRun) {
// Init pull-request status to pending
wfrCopy.Status.Overall.Phase = v1alpha1.StatusRunning
err = updatePullRequestStatus(wfrCopy)
if err != nil {
log.Warningf("Init pull request status for %s error: %v", wfr.Name, err)
}
}(wfr.DeepCopy())
if !cancelPrevious {
return nil
}
log.Infof("Trying to cancel %d previous builds for PR %s. repo=%s", len(currentWfrs), data.Ref, data.Repo)
for _, item := range currentWfrs {
_, err := stopWorkflowRun(ctx, &item, "AutoCancelPreviousBuild")
if err != nil {
log.Warningf("Fail to stop previous WorkflowRun %s/%s: %v. trigger=%s", err,
item.Namespace, item.Name, data.Type)
}
}
return nil
}