func TestTasks(t *testing.T) {
c, err := NewContext(&Options{TaskQueues: []string{"testQueue"}})
if err != nil {
t.Fatalf("NewContext: %v", err)
}
defer c.Close()
task := taskqueue.NewPOSTTask("/post", map[string][]string{})
_, err = taskqueue.Add(c, task, "testQueue")
if err != nil {
t.Fatalf("Could not add task to queue")
}
stats, err := taskqueue.QueueStats(c, []string{"testQueue"}, 0) // fetch all of them
if err != nil {
t.Fatalf("Could not get taskqueue statistics")
}
t.Logf("TaskStatistics = %#v", stats)
if len(stats) == 0 {
t.Fatalf("Queue statistics are empty")
} else if stats[0].Tasks != 1 {
t.Fatalf("Could not find the task we just added")
}
err = taskqueue.Purge(c, "testQueue")
if err != nil {
t.Fatalf("Could not purge the queue")
}
stats, err = taskqueue.QueueStats(c, []string{"testQueue"}, 0) // fetch all of them
if len(stats) == 0 {
t.Fatalf("Queue statistics are empty")
}
if stats[0].Tasks != 0 {
t.Fatalf("Purge command not successful")
}
tasks := []*taskqueue.Task{
taskqueue.NewPOSTTask("/post1", map[string][]string{}),
taskqueue.NewPOSTTask("/post2", map[string][]string{}),
}
_, err = taskqueue.AddMulti(c, tasks, "testQueue")
if err != nil {
t.Fatalf("Could not add bulk tasklist to queue")
}
stats, err = taskqueue.QueueStats(c, []string{"testQueue"}, 0) // fetch all of them
if err != nil {
t.Fatalf("Could not get taskqueue statistics")
}
if len(stats) == 0 {
t.Fatalf("Could not find the tasks we just added")
} else if stats[0].Tasks != 2 {
t.Fatalf("Could not find the tasks we just added")
}
}
func TaskRemove(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
name := mux.Vars(r)["name"]
c.Debugf("remove task name = %s", name)
if err := taskqueue.Purge(c, name); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
fmt.Fprintf(w, "remove task = %s", name)
}
//function that starts the data checking, making sure only one instance of the data checker is running
func startDataChecking(r *http.Request) {
//log.Print("startDataChecking")
if LastCheckTime+TIMEINTERVALBETWEENCHECKS < time.UTC().Seconds() {
c := appengine.NewContext(r)
taskqueue.Purge(c, "") //clears any other running data checking tasks, if there are any
t := taskqueue.NewPOSTTask("/keepDataUpToDate", nil) //creates a new task
//t.Delay=1e7
if _, err4 := taskqueue.Add(c, t, ""); err4 != nil { //runs the task
log.Print("startDataChecking err4: %v", err4)
return
}
//log.Print("startDatChecking end")
}
}
func RSVPMeetupEvents(events []MeetupEvent, r *http.Request) string {
c := appengine.NewContext(r)
queuetasks := make([]*taskqueue.Task, 0)
taskqueue.Purge(c, "futurersvp")
for _, event := range events {
t := ProcessEvent(event, r)
if t != nil {
queuetasks = append(queuetasks, t)
}
}
taskqueue.AddMulti(c, queuetasks, "futurersvp")
str := fmt.Sprintf("Total Number of Meetups processed: %d\n", len(events))
str = str + fmt.Sprintf("Total Number of future Meetups queued: %d\n", len(queuetasks))
log.Print(str)
return str
}
//function that checks data periodically and schedules itself again
func keepDataUpToDate(w http.ResponseWriter, r *http.Request) {
//log.Print("keepDataUpToDate")
//check if the function isn't called too often
//for example by calling this function directly by something other than the program itself
if LastCheckTime+TIMEINTERVALBETWEENCHECKS/2 < time.UTC().Seconds() {
c := appengine.NewContext(r)
LastCheckTime = time.UTC().Seconds() //logs the last check time
checkData(c) //checks the data
taskqueue.Purge(c, "") //clears any other running data checking tasks, if there are any
t := taskqueue.NewPOSTTask("/keepDataUpToDate", nil) //creates a new task
t.Delay = TIMEINTERVALBETWEENCHECKS //schedules it once an hour
if _, err4 := taskqueue.Add(c, t, ""); err4 != nil {
log.Print("startDataChecking err4: %v", err4)
return
}
//log.Print("keepDataUpToDate end")
}
}
