/
utils.go
57 lines (44 loc) · 905 Bytes
/
utils.go
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package display
import (
"bufio"
"encoding/json"
"os"
"sync"
log "github.com/sirupsen/logrus"
)
// TODO: would be nice to make it configurable or automatically determined
const NAME_FIELD string = "name"
type DataPoint map[string]interface{}
type DataProcessor interface {
Layout([]DataPoint) error
Process([]DataPoint) error
}
func DataProcessorStart(dp DataProcessor) *sync.WaitGroup {
var wg sync.WaitGroup
wg.Add(1)
needLayout := true
go func() {
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
text := scanner.Text()
var input []DataPoint
err := json.Unmarshal([]byte(text), &input)
if err != nil {
log.Fatal(err)
}
if needLayout {
err := dp.Layout(input)
if err != nil {
log.Fatal(err)
}
needLayout = false
}
err = dp.Process(input)
if err != nil {
log.Fatal(err)
}
}
wg.Done()
}()
return &wg
}