func (s *UserService) Create(ctx context.Context, u *User) error {
span := trace.FromContext(ctx).NewChild("trythings.user.Create")
defer span.Finish()
// TODO Make sure u.GoogleID == user.Current(ctx).ID
if u.ID != "" {
return fmt.Errorf("u already has id %q", u.ID)
}
if u.CreatedAt.IsZero() {
u.CreatedAt = time.Now()
}
id, _, err := datastore.AllocateIDs(ctx, "User", nil, 1)
if err != nil {
return err
}
u.ID = fmt.Sprintf("%x", id)
rootKey := datastore.NewKey(ctx, "Root", "root", 0, nil)
k := datastore.NewKey(ctx, "User", u.ID, 0, rootKey)
k, err = datastore.Put(ctx, k, u)
if err != nil {
return err
}
return nil
}
func NewFileKey(c context.Context) (*datastore.Key, error) {
parentKey := GetParentKey(c)
lowID, _, err := datastore.AllocateIDs(c, KIND_FILE, parentKey, 1)
if err != nil {
return nil, err
}
return datastore.NewKey(c, KIND_FILE, "", lowID, parentKey), nil
}
func (d rdsImpl) AllocateIDs(incomplete *ds.Key, n int) (start int64, err error) {
par, err := dsF2R(d.aeCtx, incomplete.Parent())
if err != nil {
return
}
start, _, err = datastore.AllocateIDs(d.aeCtx, incomplete.Kind(), par, n)
return
}
func (s *SpotGet) key(ctx context.Context) *datastore.Key {
if s.SpotCode == 0 {
low, _, err := datastore.AllocateIDs(ctx, "Spot", nil, 1)
if err != nil {
return nil
}
return datastore.NewKey(ctx, "Spot", "", low, nil)
}
return datastore.NewKey(ctx, "Spot", "", s.SpotCode, nil)
}
func submissionsAddHandler(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
if err := r.ParseForm(); err != nil {
serveErr(ctx, err, w)
return
}
ID, _, err := datastore.AllocateIDs(ctx, "Podcast", nil, 1)
if err != nil {
serveErr(ctx, err, w)
return
}
date, err := time.Parse(yyyymmdd, r.FormValue("date"))
if err != nil {
serveErr(ctx, err, w)
return
}
podcast := Podcast{
ID: ID,
Show: r.FormValue("show"),
Title: r.FormValue("title"),
Desc: r.FormValue("desc"),
URL: template.URL(r.FormValue("url")),
MediaURL: template.URL(r.FormValue("media_url")),
RuntimeSec: r.FormValue("runtime"),
Size: r.FormValue("size"),
Date: date,
Added: time.Now(),
}
if _, err := datastore.Put(ctx, datastore.NewKey(ctx, "Podcast", "", ID, nil), &podcast); err != nil {
serveErr(ctx, err, w)
return
}
key, err := datastore.DecodeKey(r.FormValue("key"))
if err != nil {
serveErr(ctx, err, w)
return
}
if err := datastore.Delete(ctx, key); err != nil {
serveErr(ctx, err, w)
return
}
if err := memcache.Delete(ctx, cacheKey); err != nil {
log.Errorf(ctx, "memcache delete error %v", err)
}
successTmpl.ExecuteTemplate(w, "base", nil)
}
func (s *TaskService) Create(ctx context.Context, t *Task) error {
span := trace.FromContext(ctx).NewChild("trythings.task.Create")
defer span.Finish()
if t.ID != "" {
return fmt.Errorf("t already has id %q", t.ID)
}
if t.CreatedAt.IsZero() {
t.CreatedAt = time.Now()
}
if t.SpaceID == "" {
return errors.New("SpaceID is required")
}
ok, err := s.IsVisible(ctx, t)
if err != nil {
return err
}
if !ok {
return errors.New("cannot access space to create task")
}
id, _, err := datastore.AllocateIDs(ctx, "Task", nil, 1)
if err != nil {
return err
}
t.ID = fmt.Sprintf("%x", id)
rootKey := datastore.NewKey(ctx, "Root", "root", 0, nil)
k := datastore.NewKey(ctx, "Task", t.ID, 0, rootKey)
k, err = datastore.Put(ctx, k, t)
if err != nil {
return err
}
err = s.Index(ctx, t)
if err != nil {
return err
}
return nil
}
func createTask(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
ctx := appengine.NewContext(r)
low, _, err := datastore.AllocateIDs(ctx, "tasks", nil, 1)
if err != nil {
sendJSONResponse(w, http.StatusNotModified, nil)
return
}
t, err := maketask(low, r.Body)
if err != nil {
sendJSONResponse(w, http.StatusNotModified, nil)
return
}
if _, e := datastore.Put(ctx, datastore.NewKey(ctx, "tasks", "", low, nil), t); e != nil {
sendJSONResponse(w, http.StatusNotModified, nil)
return
}
sendJSONResponse(w, http.StatusCreated, nil)
}
func (s *ViewService) Create(ctx context.Context, v *View) error {
span := trace.FromContext(ctx).NewChild("trythings.view.Create")
defer span.Finish()
if v.ID != "" {
return fmt.Errorf("v already has id %q", v.ID)
}
if v.CreatedAt.IsZero() {
v.CreatedAt = time.Now()
}
if v.Name == "" {
return errors.New("Name is required")
}
if v.SpaceID == "" {
return errors.New("SpaceID is required")
}
ok, err := s.IsVisible(ctx, v)
if err != nil {
return err
}
if !ok {
return errors.New("cannot access space to create view")
}
id, _, err := datastore.AllocateIDs(ctx, "View", nil, 1)
if err != nil {
return err
}
v.ID = fmt.Sprintf("%x", id)
rootKey := datastore.NewKey(ctx, "Root", "root", 0, nil)
k := datastore.NewKey(ctx, "View", v.ID, 0, rootKey)
k, err = datastore.Put(ctx, k, v)
if err != nil {
return err
}
return nil
}
func (s *SpaceService) Create(ctx context.Context, sp *Space) error {
span := trace.FromContext(ctx).NewChild("trythings.space.Create")
defer span.Finish()
if sp.ID != "" {
return fmt.Errorf("sp already has id %q", sp.ID)
}
if sp.CreatedAt.IsZero() {
sp.CreatedAt = time.Now()
}
if len(sp.UserIDs) > 0 {
return errors.New("UserIDs must be empty")
}
su, err := IsSuperuser(ctx)
if err != nil {
return err
}
if !su {
u, err := s.UserService.FromContext(ctx)
if err != nil {
return err
}
sp.UserIDs = []string{u.ID}
}
id, _, err := datastore.AllocateIDs(ctx, "Space", nil, 1)
if err != nil {
return err
}
sp.ID = fmt.Sprintf("%x", id)
rootKey := datastore.NewKey(ctx, "Root", "root", 0, nil)
k := datastore.NewKey(ctx, "Space", sp.ID, 0, rootKey)
k, err = datastore.Put(ctx, k, sp)
if err != nil {
return err
}
return nil
}
// PostSubmission creates a new submission.
func PostSubmission(ctx context.Context, w http.ResponseWriter, r *http.Request) (status int, err error) {
if r.Method != "POST" {
return http.StatusMethodNotAllowed, nil
}
p, ok := passenger.FromContext(ctx)
if !ok {
return http.StatusUnauthorized, nil
}
mediaType, _, err := mime.ParseMediaType(r.Header.Get("Content-Type"))
if err != nil {
return http.StatusBadRequest, err
}
if !strings.HasPrefix(mediaType, "multipart/") {
return http.StatusUnsupportedMediaType, nil
}
resultKey, err := datastore.DecodeKey(mux.Vars(r)["resultKey"])
if err != nil {
return http.StatusNotFound, err
}
if !util.HasParent(p.User, resultKey) {
return http.StatusBadRequest, errors.New("cannot submit answer for other users")
}
taskKey, err := datastore.DecodeKey(mux.Vars(r)["taskKey"])
if err != nil {
return http.StatusNotFound, err
}
if err := r.ParseMultipartForm(16 << 20); err != nil {
return http.StatusBadRequest, err
}
files, ok := r.MultipartForm.File["files"]
if !ok {
return http.StatusBadRequest, errors.New("missing files")
}
var task model.Task
if err = datastore.Get(ctx, taskKey, &task); err != nil {
return http.StatusNotFound, err
}
// Furthermore, the name of the GCS object is derived from the of the
// encapsulating Submission. To avoid race conditions, allocate an ID.
low, _, err := datastore.AllocateIDs(ctx, model.SubmissionKind, resultKey, 1)
if err != nil {
return http.StatusInternalServerError, err
}
submissionKey := datastore.NewKey(ctx, model.SubmissionKind, "", low, resultKey)
storedCode := model.StoredObject{
Bucket: util.SubmissionBucket(),
Name: nameObject(submissionKey) + "/Code/",
}
submission := model.Submission{
Task: taskKey,
Time: time.Now(),
Language: detectLanguage(files),
Code: storedCode,
}
if _, err = datastore.Put(ctx, submissionKey, &submission); err != nil {
return http.StatusInternalServerError, err
}
var tests model.Tests
testKeys, err := model.NewQueryForTest().
Ancestor(taskKey).
GetAll(ctx, &tests)
if err != nil {
return http.StatusInternalServerError, err
}
prrs, pwrs := multiPipe(len(tests))
go maketar(pwrs, files)
for i, t := range tests {
go func(i int, t model.Test) {
if err := test.Tester(t.Tester).Call(ctx, *t.Key(testKeys[i]), *submission.Key(submissionKey), prrs[i]); err != nil {
log.Warningf(ctx, "%s", err)
}
}(i, t)
}
if err := upload(util.CloudContext(ctx), storedCode.Bucket, storedCode.Name, files); err != nil {
return http.StatusInternalServerError, err
}
return http.StatusOK, nil
}
// AllocateIDs wraps datastore.AllocateIDs
func (d *Driver) AllocateIDs(parent *datastore.Key, n int) (low, high int64, err error) {
return datastore.AllocateIDs(d.ctx, d.kind, parent, n)
}
func Run(c context.Context, ds appwrap.Datastore, job MapReduceJob) (int64, error) {
readerNames, err := job.Inputs.ReaderNames()
if err != nil {
return 0, fmt.Errorf("forming reader names: %s", err)
} else if len(readerNames) == 0 {
return 0, fmt.Errorf("no input readers")
}
writerNames, err := job.Outputs.WriterNames(c)
if err != nil {
return 0, fmt.Errorf("forming writer names: %s", err)
} else if len(writerNames) == 0 {
return 0, fmt.Errorf("no output writers")
}
reducerCount := len(writerNames)
jobKey, err := createJob(ds, job.UrlPrefix, writerNames, job.OnCompleteUrl, job.SeparateReduceItems, job.JobParameters, job.RetryCount)
if err != nil {
return 0, fmt.Errorf("creating job: %s", err)
}
firstId, _, err := datastore.AllocateIDs(c, TaskEntity, nil, len(readerNames))
if err != nil {
return 0, fmt.Errorf("allocating task ids: %s", err)
}
taskKeys := makeTaskKeys(ds, firstId, len(readerNames))
tasks := make([]JobTask, len(readerNames))
for i, readerName := range readerNames {
url := fmt.Sprintf("%s/map?taskKey=%s;reader=%s;shards=%d",
job.UrlPrefix, taskKeys[i].Encode(), readerName,
reducerCount)
tasks[i] = JobTask{
Status: TaskStatusPending,
Url: url,
Type: TaskTypeMap,
}
}
if err := createTasks(ds, jobKey, taskKeys, tasks, StageMapping); err != nil {
if _, innerErr := markJobFailed(c, ds, jobKey); err != nil {
logError(c, "failed to log job %d as failed: %s", jobKey.IntID(), innerErr)
}
return 0, fmt.Errorf("creating tasks: %s", err)
}
for i := range tasks {
if err := job.PostTask(c, tasks[i].Url, job.JobParameters); err != nil {
if _, innerErr := markJobFailed(c, ds, jobKey); err != nil {
logError(c, "failed to log job %d as failed: %s", jobKey.IntID(), innerErr)
}
return 0, fmt.Errorf("posting task: %s", err)
}
}
if err := job.PostStatus(c, fmt.Sprintf("%s/map-monitor?jobKey=%s", job.UrlPrefix, jobKey.Encode())); err != nil {
logCritical(c, "failed to start map monitor task: %s", err)
}
return jobKey.IntID(), nil
}
func (s *SearchService) Create(ctx context.Context, se *Search) error {
span := trace.FromContext(ctx).NewChild("trythings.search.Create")
defer span.Finish()
if se.ID != "" {
return fmt.Errorf("se already has id %q", se.ID)
}
if se.CreatedAt.IsZero() {
se.CreatedAt = time.Now()
}
if se.Name == "" {
return errors.New("Name is required")
}
if se.ViewID == "" {
return errors.New("ViewID is required")
}
v, err := s.ViewService.ByID(ctx, se.ViewID)
if err != nil {
return err
}
if se.SpaceID == "" {
se.SpaceID = v.SpaceID
}
if se.SpaceID != v.SpaceID {
return errors.New("Search's SpaceID must match View's")
}
if len(se.ViewRank) != 0 {
return fmt.Errorf("se already has a view rank %x", se.ViewRank)
}
// TODO#Performance: Add a shared or per-request cache to support these small, repeated queries.
if se.Query == "" {
return errors.New("Query is required")
}
rootKey := datastore.NewKey(ctx, "Root", "root", 0, nil)
// Create a ViewRank for the search.
// It should come after every other search in the view.
var ranks []*struct {
ViewRank datastore.ByteString
}
_, err = datastore.NewQuery("Search").
Ancestor(rootKey).
Filter("ViewID =", se.ViewID).
Project("ViewRank").
Order("-ViewRank").
Limit(1).
GetAll(ctx, &ranks)
if err != nil {
return err
}
maxViewRank := MinRank
if len(ranks) != 0 {
maxViewRank = Rank(ranks[0].ViewRank)
}
rank, err := NewRank(maxViewRank, MaxRank)
if err != nil {
return err
}
se.ViewRank = datastore.ByteString(rank)
ok, err := s.IsVisible(ctx, se)
if err != nil {
return err
}
if !ok {
return errors.New("cannot access view to create search")
}
id, _, err := datastore.AllocateIDs(ctx, "Search", nil, 1)
if err != nil {
return err
}
se.ID = fmt.Sprintf("%x", id)
k := datastore.NewKey(ctx, "Search", se.ID, 0, rootKey)
k, err = datastore.Put(ctx, k, se)
if err != nil {
return err
}
return nil
}
// PostSubmission creates a new submission.
func PostSubmission(ctx context.Context, w http.ResponseWriter, r *http.Request) (status int, err error) {
if r.Method != "POST" {
return http.StatusMethodNotAllowed, nil
}
var body = struct {
Code string
Language string
}{}
if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
return http.StatusBadRequest, err
}
p, ok := passenger.FromContext(ctx)
if !ok {
return http.StatusUnauthorized, nil
}
resultKey, err := datastore.DecodeKey(mux.Vars(r)["resultKey"])
if err != nil {
return http.StatusNotFound, err
}
if !util.HasParent(p.User, resultKey) {
return http.StatusBadRequest, errors.New("cannot submit answer for other users")
}
taskKey, err := datastore.DecodeKey(mux.Vars(r)["taskKey"])
if err != nil {
return http.StatusNotFound, err
}
var task model.Task
if err = datastore.Get(ctx, taskKey, &task); err != nil {
return http.StatusInternalServerError, err
}
// Furthermore, the name of the GCS object is derived from the of the
// encapsulating Submission. To avoid race conditions, allocate an ID.
low, _, err := datastore.AllocateIDs(ctx, model.SubmissionKind, resultKey, 1)
if err != nil {
return http.StatusInternalServerError, err
}
submissionKey := datastore.NewKey(ctx, model.SubmissionKind, "", low, resultKey)
submission := model.Submission{
Task: taskKey,
Time: time.Now(),
}
if body.Code != "" {
submission.Code, err = store(ctx, submissionKey, body.Code, body.Language)
if err != nil {
return http.StatusInternalServerError, err
}
submission.Language = body.Language
}
// Set the submission in stone.
if _, err = datastore.Put(ctx, submissionKey, &submission); err != nil {
return http.StatusInternalServerError, err
}
var tests model.Tests
_, err = model.NewQueryForTest().
Ancestor(taskKey).
GetAll(ctx, &tests)
if err != nil {
return http.StatusInternalServerError, err
}
for _, t := range tests {
if err := test.Tester(t.Tester).Call(ctx, t.Params, *submission.Key(submissionKey)); err != nil {
log.Warningf(ctx, "%s", err)
continue
}
}
// TODO(flowlo): Return something meaningful.
return http.StatusOK, nil
}
func mapMonitorTask(c context.Context, ds appwrap.Datastore, pipeline MapReducePipeline, jobKey *datastore.Key, r *http.Request, timeout time.Duration) int {
start := time.Now()
job, err := waitForStageCompletion(c, ds, pipeline, jobKey, StageMapping, StageReducing, timeout)
if err != nil {
logCritical(c, "waitForStageCompletion() failed: %s", err)
return 200
} else if job.Stage == StageMapping {
logInfo(c, "wait timed out -- returning an error and letting us automatically restart")
return 500
}
logInfo(c, "map stage completed -- stage is now %s", job.Stage)
// erm... we just did this in jobStageComplete. dumb to do it again
mapTasks, err := gatherTasks(ds, job)
if err != nil {
logError(c, "failed loading tasks: %s", mapTasks)
jobFailed(c, ds, pipeline, jobKey, fmt.Errorf("error loading tasks after map complete: %s", err.Error()))
return 200
}
// we have one set for each reducer task
storageNames := make([][]string, len(job.WriterNames))
for i := range mapTasks {
var shardNames map[string]int
if err = json.Unmarshal([]byte(mapTasks[i].Result), &shardNames); err != nil {
logError(c, `unmarshal error for result from map %d result '%+v'`, job.FirstTaskId+int64(i), mapTasks[i].Result)
jobFailed(c, ds, pipeline, jobKey, fmt.Errorf("cannot unmarshal map shard names: %s", err.Error()))
return 200
} else {
for name, shard := range shardNames {
storageNames[shard] = append(storageNames[shard], name)
}
}
}
firstId, _, err := datastore.AllocateIDs(c, TaskEntity, nil, len(job.WriterNames))
if err != nil {
jobFailed(c, ds, pipeline, jobKey, fmt.Errorf("failed to allocate ids for reduce tasks: %s", err.Error()))
return 200
}
taskKeys := makeTaskKeys(ds, firstId, len(job.WriterNames))
tasks := make([]JobTask, 0, len(job.WriterNames))
for shard := range job.WriterNames {
if shards := storageNames[shard]; len(shards) > 0 {
url := fmt.Sprintf("%s/reduce?taskKey=%s;shard=%d;writer=%s",
job.UrlPrefix, taskKeys[len(tasks)].Encode(), shard, url.QueryEscape(job.WriterNames[shard]))
firstId++
shardJson, _ := json.Marshal(shards)
shardZ := &bytes.Buffer{}
w := zlib.NewWriter(shardZ)
w.Write(shardJson)
w.Close()
tasks = append(tasks, JobTask{
Status: TaskStatusPending,
Url: url,
ReadFrom: shardZ.Bytes(),
SeparateReduceItems: job.SeparateReduceItems,
Type: TaskTypeReduce,
})
}
}
// this means we got nothing from maps. there is no result. so, we're done! right? that's hard to communicate though
// so we'll just start a single task with no inputs
if len(tasks) == 0 {
logInfo(c, "no results from maps -- starting noop reduce task")
url := fmt.Sprintf("%s/reduce?taskKey=%s;shard=%d;writer=%s",
job.UrlPrefix, taskKeys[len(tasks)].Encode(), 0, url.QueryEscape(job.WriterNames[0]))
tasks = append(tasks, JobTask{
Status: TaskStatusPending,
Url: url,
ReadFrom: []byte(``),
SeparateReduceItems: job.SeparateReduceItems,
Type: TaskTypeReduce,
})
}
taskKeys = taskKeys[0:len(tasks)]
if err := createTasks(ds, jobKey, taskKeys, tasks, StageReducing); err != nil {
jobFailed(c, ds, pipeline, jobKey, fmt.Errorf("failed to create reduce tasks: %s", err.Error()))
return 200
}
for i := range tasks {
if err := pipeline.PostTask(c, tasks[i].Url, job.JsonParameters); err != nil {
jobFailed(c, ds, pipeline, jobKey, fmt.Errorf("failed to post reduce task: %s", err.Error()))
return 200
}
}
if err := pipeline.PostStatus(c, fmt.Sprintf("%s/reduce-monitor?jobKey=%s", job.UrlPrefix, jobKey.Encode())); err != nil {
jobFailed(c, ds, pipeline, jobKey, fmt.Errorf("failed to start reduce monitor: %s", err.Error()))
return 200
}
logInfo(c, "mapping complete after %s of monitoring ", time.Now().Sub(start))
return 200
}
