func (obsc *ObjectScraper) extractFirstValue(data []byte, path *jsonpath.Path) (*jsonpath.Result, error) {
eval, err := jsonpath.EvalPathsInBytes(data, []*jsonpath.Path{path})
if err != nil {
return nil, fmt.Errorf("failed to eval jsonpath;err:<%s>", err)
}
result, ok := eval.Next()
if !ok {
return nil, fmt.Errorf("no value found for path")
}
return result, nil
}
func (vs *ValueScraper) forTargetValue(data []byte, handle func(*jsonpath.Result)) error {
eval, err := jsonpath.EvalPathsInBytes(data, []*jsonpath.Path{vs.valueJsonPath})
if err != nil {
return fmt.Errorf("failed to eval jsonpath;path:<%s>,json:<%s>", vs.valueJsonPath, data)
}
for {
result, ok := eval.Next()
if !ok {
break
}
handle(result)
}
return nil
}