drone源码-事件触发通知的方式
原文链接： drone源码-事件触发通知的方式
https://gogs.io/docs/features/webhook.html
https://developer.github.com/v3/activity/events/types/#pushevent
branch := strings.TrimPrefix(
strings.TrimPrefix(
hook.RefChanges[0].RefID,
"refs/heads/",
),
"refs/tags/",
)
// Tag returns current tag for push event hook payload
// This function returns empty string for any other events
func (h *HookPayload) Tag() string {
return strings.TrimPrefix(h.Ref, "refs/tags/")
}
// Branch returns current branch for push event hook payload
// This function returns empty string for any other events
func (h *HookPayload) Branch() string {
return strings.TrimPrefix(h.Ref, "refs/heads/")
}
// Load loads the router
func Load(mux *httptreemux.ContextMux, middleware ...gin.HandlerFunc) http.Handler {
e.POST("/hook", server.PostHook) //处理push event关键
e.POST("/api/hook", server.PostHook)
e.GET("/healthz", server.Health)
return e
}
~/go/src/github.com/drone/drone/server/hook.go
func PostHook(c *gin.Context) {
remote_ := remote.FromContext(c)
tmprepo, build, err := remote_.Hook(c.Request)
if err != nil {
logrus.Errorf("failure to parse hook. %s", err)
c.AbortWithError(400, err)
return
}
if build == nil {
c.Writer.WriteHeader(200)
return
}
if tmprepo == nil {
logrus.Errorf("failure to ascertain repo from hook.")
c.Writer.WriteHeader(400)
return
}
// skip the build if any case-insensitive combination of the words "skip" and "ci"
// wrapped in square brackets appear in the commit message
skipMatch := skipRe.FindString(build.Message)
if len(skipMatch) > 0 {
logrus.Infof("ignoring hook. %s found in %s", skipMatch, build.Commit)
c.Writer.WriteHeader(204)
return
}
repo, err := store.GetRepoOwnerName(c, tmprepo.Owner, tmprepo.Name)
if err != nil {
logrus.Errorf("failure to find repo %s/%s from hook. %s", tmprepo.Owner, tmprepo.Name, err)
c.AbortWithError(404, err)
return
}
if !repo.IsActive {
logrus.Errorf("ignoring hook. %s/%s is inactive.", tmprepo.Owner, tmprepo.Name)
c.AbortWithError(204, err)
return
}
// get the token and verify the hook is authorized
parsed, err := token.ParseRequest(c.Request, func(t *token.Token) (string, error) {
return repo.Hash, nil
})
if err != nil {
logrus.Errorf("failure to parse token from hook for %s. %s", repo.FullName, err)
c.AbortWithError(400, err)
return
}
if parsed.Text != repo.FullName {
logrus.Errorf("failure to verify token from hook. Expected %s, got %s", repo.FullName, parsed.Text)
c.AbortWithStatus(403)
return
}
if repo.UserID == 0 {
logrus.Warnf("ignoring hook. repo %s has no owner.", repo.FullName)
c.Writer.WriteHeader(204)
return
}
var skipped = true
if (build.Event == model.EventPush && repo.AllowPush) ||
(build.Event == model.EventPull && repo.AllowPull) ||
(build.Event == model.EventDeploy && repo.AllowDeploy) ||
(build.Event == model.EventTag && repo.AllowTag) {
skipped = false
}
if skipped {
logrus.Infof("ignoring hook. repo %s is disabled for %s events.", repo.FullName, build.Event)
c.Writer.WriteHeader(204)
return
}
user, err := store.GetUser(c, repo.UserID)
if err != nil {
logrus.Errorf("failure to find repo owner %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
// if the remote has a refresh token, the current access token
// may be stale. Therefore, we should refresh prior to dispatching
// the build.
if refresher, ok := remote_.(remote.Refresher); ok {
ok, _ := refresher.Refresh(user)
if ok {
store.UpdateUser(c, user)
}
}
// fetch the build file from the database
confb, err := remote.FileBackoff(remote_, user, repo, build, repo.Config)
if err != nil {
logrus.Errorf("error: %s: cannot find %s in %s: %s", repo.FullName, repo.Config, build.Ref, err)
c.AbortWithError(404, err)
return
}
sha := shasum(confb)
conf, err := Config.Storage.Config.ConfigFind(repo, sha)
if err != nil {
conf = &model.Config{
RepoID: repo.ID,
Data: string(confb),
Hash: sha,
}
err = Config.Storage.Config.ConfigCreate(conf)
if err != nil {
// retry in case we receive two hooks at the same time
conf, err = Config.Storage.Config.ConfigFind(repo, sha)
if err != nil {
logrus.Errorf("failure to find or persist build config for %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
}
}
build.ConfigID = conf.ID
netrc, err := remote_.Netrc(user, repo)
if err != nil {
c.String(500, "Failed to generate netrc file. %s", err)
return
}
// verify the branches can be built vs skipped
branches, err := yaml.ParseString(conf.Data)
if err == nil {
if !branches.Branches.Match(build.Branch) && build.Event != model.EventTag && build.Event != model.EventDeploy {
c.String(200, "Branch does not match restrictions defined in yaml")
return
}
}
// update some build fields
build.RepoID = repo.ID
build.Verified = true
build.Status = model.StatusPending
if repo.IsGated {
allowed, _ := Config.Services.Senders.SenderAllowed(user, repo, build, conf)
if !allowed {
build.Status = model.StatusBlocked
}
}
if err = Config.Services.Limiter.LimitBuild(user, repo, build); err != nil {
c.String(403, "Build blocked by limiter")
return
}
build.Trim()
err = store.CreateBuild(c, build, build.Procs...)
if err != nil {
logrus.Errorf("failure to save commit for %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
c.JSON(200, build)
if build.Status == model.StatusBlocked {
return
}
envs := map[string]string{}
if Config.Services.Environ != nil {
globals, _ := Config.Services.Environ.EnvironList(repo)
for _, global := range globals {
envs[global.Name] = global.Value
}
}
secs, err := Config.Services.Secrets.SecretListBuild(repo, build)
if err != nil {
logrus.Debugf("Error getting secrets for %s#%d. %s", repo.FullName, build.Number, err)
}
regs, err := Config.Services.Registries.RegistryList(repo)
if err != nil {
logrus.Debugf("Error getting registry credentials for %s#%d. %s", repo.FullName, build.Number, err)
}
// get the previous build so that we can send
// on status change notifications
last, _ := store.GetBuildLastBefore(c, repo, build.Branch, build.ID)
//
// BELOW: NEW
//
defer func() {
uri := fmt.Sprintf("%s/%s/%d", httputil.GetURL(c.Request), repo.FullName, build.Number)
err = remote_.Status(user, repo, build, uri)
if err != nil {
logrus.Errorf("error setting commit status for %s/%d: %v", repo.FullName, build.Number, err)
}
}()
b := builder{
Repo: repo,
Curr: build,
Last: last,
Netrc: netrc,
Secs: secs,
Regs: regs,
Envs: envs,
Link: httputil.GetURL(c.Request),
Yaml: conf.Data,
}
items, err := b.Build()
if err != nil {
build.Status = model.StatusError
build.Started = time.Now().Unix()
build.Finished = build.Started
build.Error = err.Error()
store.UpdateBuild(c, build)
return
}
var pcounter = len(items)
for _, item := range items {
build.Procs = append(build.Procs, item.Proc)
item.Proc.BuildID = build.ID
for _, stage := range item.Config.Stages {
var gid int
for _, step := range stage.Steps {
pcounter++
if gid == 0 {
gid = pcounter
}
proc := &model.Proc{
BuildID: build.ID,
Name: step.Alias,
PID: pcounter,
PPID: item.Proc.PID,
PGID: gid,
State: model.StatusPending,
}
build.Procs = append(build.Procs, proc)
}
}
}
err = store.FromContext(c).ProcCreate(build.Procs)
if err != nil {
logrus.Errorf("error persisting procs %s/%d: %s", repo.FullName, build.Number, err)
}
//
// publish topic
//
message := pubsub.Message{
Labels: map[string]string{
"repo": repo.FullName,
"private": strconv.FormatBool(repo.IsPrivate),
},
}
buildCopy := *build
buildCopy.Procs = model.Tree(buildCopy.Procs)
message.Data, _ = json.Marshal(model.Event{
Type: model.Enqueued,
Repo: *repo,
Build: buildCopy,
})
// TODO remove global reference
Config.Services.Pubsub.Publish(c, "topic/events", message)
//
// end publish topic
//
for _, item := range items {
task := new(queue.Task)
task.ID = fmt.Sprint(item.Proc.ID)
task.Labels = map[string]string{}
for k, v := range item.Labels {
task.Labels[k] = v
}
task.Labels["platform"] = item.Platform
task.Labels["repo"] = b.Repo.FullName
task.Data, _ = json.Marshal(rpc.Pipeline{
ID: fmt.Sprint(item.Proc.ID),
Config: item.Config,
Timeout: b.Repo.Timeout,
})
Config.Services.Logs.Open(context.Background(), task.ID)
Config.Services.Queue.Push(context.Background(), task)
}
}