func Load(ts graph.TripleStore, cfg *config.Config, path string) error {
f, err := os.Open(path)
if err != nil {
return fmt.Errorf("could not open file %q: %v", path, err)
}
defer f.Close()
r, err := decompressor(f)
if err != nil {
glog.Fatalln(err)
}
dec := nquads.NewDecoder(r)
bulker, canBulk := ts.(graph.BulkLoader)
if canBulk {
err = bulker.BulkLoad(dec)
if err == nil {
return nil
}
if err == graph.ErrCannotBulkLoad {
err = nil
}
}
if err != nil {
return err
}
block := make([]*graph.Triple, 0, cfg.LoadSize)
for {
t, err := dec.Unmarshal()
if err != nil {
if err == io.EOF {
break
}
return err
}
block = append(block, t)
if len(block) == cap(block) {
ts.AddTripleSet(block)
block = block[:0]
}
}
ts.AddTripleSet(block)
return nil
}
func (api *Api) ServeV1WriteNQuad(w http.ResponseWriter, r *http.Request, params httprouter.Params) int {
if api.config.ReadOnly {
return FormatJson400(w, "Database is read-only.")
}
formFile, _, err := r.FormFile("NQuadFile")
if err != nil {
glog.Errorln(err)
return FormatJsonError(w, 500, "Couldn't read file: "+err.Error())
}
defer formFile.Close()
blockSize, blockErr := strconv.ParseInt(r.URL.Query().Get("block_size"), 10, 64)
if blockErr != nil {
blockSize = int64(api.config.LoadSize)
}
dec := nquads.NewDecoder(formFile)
var (
n int
block = make([]*graph.Triple, 0, blockSize)
)
for {
t, err := dec.Unmarshal()
if err != nil {
if err == io.EOF {
break
}
panic("what can do this here?") // FIXME(kortschak)
}
block = append(block, t)
n++
if len(block) == cap(block) {
api.ts.AddTripleSet(block)
block = block[:0]
}
}
api.ts.AddTripleSet(block)
fmt.Fprintf(w, "{\"result\": \"Successfully wrote %d triples.\"}", n)
return 200
}