/
raw.go
70 lines (59 loc) · 1.91 KB
/
raw.go
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//
// Copyright © 2019 Uncharted Software Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metadata
import (
"path"
"github.com/Jeffail/gabs/v2"
"github.com/pkg/errors"
"github.com/uncharted-distil/distil-compute/model"
)
// Raw is a data resource that is contained within one file which does not
// have fields specified in the schema.
type Raw struct {
rootPath string
}
// Parse extracts the data resource from the data schema document.
func (r *Raw) Parse(res *gabs.Container) (*model.DataResource, error) {
if res.Path("resID").Data() == nil {
return nil, errors.Errorf("unable to parse resource id")
}
resID := res.Path("resID").Data().(string)
if res.Path("resPath").Data() == nil {
return nil, errors.Errorf("unable to parse resource path")
}
resPath := res.Path("resPath").Data().(string)
var resFormats []string
if res.Path("resFormat").Data() != nil {
formatsRaw := res.Path("resFormat").Children()
if formatsRaw == nil {
return nil, errors.New("unable to parse resource format")
}
resFormats = make([]string, len(formatsRaw))
for i, r := range formatsRaw {
resFormats[i] = r.Data().(string)
}
} else {
resFormats = make([]string, 0)
}
dr, err := loadRawVariables(path.Join(r.rootPath, resPath))
if err != nil {
return nil, err
}
dr.ResPath = resPath
dr.ResID = resID
dr.ResType = model.ResTypeRaw
dr.ResFormat = resFormats
return dr, nil
}