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converters.go
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/
converters.go
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package data
import (
"time"
"github.com/grafana/grafana-plugin-sdk-go/data"
"github.com/grafana/grafana-plugin-sdk-go/data/framestruct"
)
func Converters(frames []*data.Frame) []framestruct.FramestructOption {
var convs = []framestruct.FramestructOption{}
var fields = map[string]*data.Field{}
for _, f := range frames {
for _, fld := range f.Fields {
fields[fld.Name] = fld
}
}
for _, fld := range fields {
conv := converterMap[fld.Type()]
if conv != nil {
converter := framestruct.WithConverterFor(fld.Name, conv)
convs = append(convs, converter)
}
}
return convs
}
var converterMap = map[data.FieldType]func(i interface{}) (interface{}, error){
data.FieldTypeTime: timeConverter,
data.FieldTypeNullableTime: timeConverter,
}
var timeConverter = func(i interface{}) (interface{}, error) {
if s, ok := i.(string); ok {
return parseDate(s)
}
if s, ok := i.(*string); ok {
return parseDate(*s)
}
return nil, nil
}
const layout = "2006-01-02 15:04:05-07"
func parseDate(s string) (time.Time, error) {
t, err := time.Parse(layout, s)
if err != nil {
logger.Error("failed to parse time", "error", err)
return t, err
}
return t.UTC(), nil
}