/
savedmodel.go
64 lines (51 loc) · 1.24 KB
/
savedmodel.go
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package savedmodel
import (
"errors"
"io"
"io/ioutil"
protobuf "github.com/Applifier/go-tensorflow/types/tensorflow/core/protobuf"
)
// ErrSignatureNotFound error returned then given signature was not found from SavedModel
var ErrSignatureNotFound = errors.New("no signature with given name found")
// GetSignatureDefFromReader returns SignatureDef from a given io.Reader
func GetSignatureDefFromReader(tags []string, signature string, r io.Reader) (*protobuf.SignatureDef, error) {
savedModel := &protobuf.SavedModel{}
b, err := ioutil.ReadAll(r)
if err != nil {
return nil, err
}
if err := savedModel.Unmarshal(b); err != nil {
return nil, err
}
metagraphs := savedModel.GetMetaGraphs()
for _, mgraph := range metagraphs {
info := mgraph.GetMetaInfoDef()
mGraphTags := info.GetTags()
if !compareStringSlice(mGraphTags, tags) {
continue
}
def, ok := mgraph.SignatureDef[signature]
if ok {
return def, nil
}
}
return nil, ErrSignatureNotFound
}
func compareStringSlice(a, b []string) bool {
if len(a) != len(b) {
return false
}
for _, aitem := range a {
found := false
for _, bitem := range b {
if aitem == bitem {
found = true
break
}
}
if !found {
return false
}
}
return true
}