// Run tries to be short.
func (task Dummy) Run() error {
file := dagger.Output(task).MustCreateLocalTarget()
defer file.Close()
for _, p := range dagger.Input(task).PathList() {
if _, err := io.WriteString(file, fmt.Sprintf("OK\t%s\n", p)); err != nil {
return err
}
}
return nil
}
// Run creates the data.
func (task BogusData) Run() error {
file, err := dagger.Output(task).CreateLocalTarget()
if err != nil {
return err
}
defer file.Close()
for i := 0; i < task.Length; i++ {
var vals []string
for j := 0; j < task.Cols; j++ {
vals = append(vals, strconv.Itoa(rand.Intn(1000)))
}
if _, err := io.WriteString(file, strings.Join(vals, "\t")+"\n"); err != nil {
return err
}
}
return nil
}
func (task BogusAggregation) Run() error {
scanner, err := dagger.Input(task).Scanner()
if err != nil {
return err
}
var sum int
for scanner.Scan() {
fields := strings.Fields(scanner.Text())
v, err := strconv.Atoi(fields[task.Col])
if err != nil {
return err
}
sum += v
}
file, err := dagger.Output(task).CreateLocalTarget()
if err != nil {
return err
}
defer file.Close()
_, err = io.WriteString(file, fmt.Sprintf("%d\n", sum))
return err
}