func BackendStart(c mpg.Context, w http.ResponseWriter, r *http.Request) {
return
const sz = 100
ic := 0
var f func(appengine.Context)
var cs string
f = func(c appengine.Context) {
gn := goon.FromContext(c)
c.Errorf("ic: %d", ic)
wg := sync.WaitGroup{}
wg.Add(sz)
var j int64
q := datastore.NewQuery("F").KeysOnly()
if cs != "" {
if cur, err := datastore.DecodeCursor(cs); err == nil {
q = q.Start(cur)
c.Errorf("cur start: %v", cur)
}
}
it := q.Run(c)
for j = 0; j < sz; j++ {
k, err := it.Next(nil)
c.Errorf("%v: %v, %v", j, k, err)
if err != nil {
c.Criticalf("err: %v", err)
return
}
go func(k *datastore.Key) {
f := Feed{Url: k.StringID()}
if err := gn.Get(&f); err == nil {
f.Subscribe(c)
}
wg.Done()
}(k)
}
cur, err := it.Cursor()
if err == nil {
cs = cur.String()
}
wg.Wait()
ic++
runtime.RunInBackground(c, f)
}
runtime.RunInBackground(c, f)
}
func BackendStart(c mpg.Context, w http.ResponseWriter, r *http.Request) {
const sz = 100
ic := 0
gn := goon.FromContext(c)
fk := gn.Key(&Feed{Url: "a"})
q := datastore.NewQuery("F").Filter("__key__ <", fk).Order("__key__").KeysOnly().Limit(1)
keys, _ := q.GetAll(c, nil)
if len(keys) == 0 {
return
}
c.Errorf("start: %v", keys[0])
startid := keys[0].IntID() / sz
var f func(appengine.Context)
f = func(c appengine.Context) {
c.Errorf("new request: %d", ic)
t1 := time.Now()
wg := sync.WaitGroup{}
wg.Add(sz)
var j int64
for j = 0; j < sz; j++ {
go func(j int64) {
k := datastore.NewKey(c, "F", "", startid*sz+j, nil)
c.Infof("del: %v", k)
if err := datastore.Delete(c, k); err != nil {
c.Errorf("delete err: %v", err.Error())
}
wg.Done()
}(j)
}
wg.Wait()
t2 := time.Now()
c.Infof("%v, %v, %v", t1, t2, t2.Sub(t1))
ic++
startid++
runtime.RunInBackground(c, f)
}
runtime.RunInBackground(c, f)
}