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License: MIT License
Convenient wrapper around Go's MongoDB driver Mgo
License: MIT License
func (s *DbSession) ReadFile(id, prefix string, file *File) error {
f, err := s.gridFS(prefix).OpenId(bson.ObjectIdHex(id))
if err != nil {
return err
}
n := file.ByteLength
if n == 0 {
n = 8192
}
b := make([]byte, file.ByteLength)
_, err = f.Read(b)
err = f.Close()
if err != nil {
return err
}
file.ID = id
file.Data = b
file.Name = f.Name()
file.ContentType = f.ContentType()
return nil
It's Me
//ReadFile read file based on given id
func (s *DbSession) ReadFile(id, prefix string, file *File) error {
f, err := s.gridFS(prefix).OpenId(bson.ObjectIdHex(id))
if err != nil {
return err
}
n := file.ByteLength
if n == 0 {
n = 8192
}
buf := make([]byte,n)
chunks := make([]byte,f.Size())
for{
n, err := f.Read(buf)
if err != nil && err != io.EOF{
return err
}
if 0 ==n {break}
chunks=append(chunks,buf[:n]...)
}
err = f.Close()
if err != nil {
return err
}
file.ID = id
file.Data = chunks
file.Name = f.Name()
file.ContentType = f.ContentType()
return nil
}
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