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// Copyright 2016 The Linux Foundation
//
// 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 schema
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"github.com/pkg/errors"
"github.com/xeipuuv/gojsonschema"
)
// Validator wraps a media type string identifier
// and implements validation against a JSON schema.
type Validator string
// ValidationError contains all the errors that happened during validation.
type ValidationError struct {
Errs []error
}
func (e ValidationError) Error() string {
return fmt.Sprintf("%v", e.Errs)
}
// Validate validates the given reader against the schema of the wrapped media type.
func (v Validator) Validate(src io.Reader) error {
buf, err := ioutil.ReadAll(src)
if err != nil {
return errors.Wrap(err, "unable to read the document file")
}
sl := gojsonschema.NewReferenceLoaderFileSystem("file:///"+specs[v], fs)
ml := gojsonschema.NewStringLoader(string(buf))
result, err := gojsonschema.Validate(sl, ml)
if err != nil {
return errors.Wrapf(
WrapSyntaxError(bytes.NewReader(buf), err),
"schema %s: unable to validate", v)
}
if result.Valid() {
return nil
}
errs := make([]error, 0, len(result.Errors()))
for _, desc := range result.Errors() {
errs = append(errs, fmt.Errorf("%s", desc))
}
return ValidationError{
Errs: errs,
}
}
type unimplemented string
func (v unimplemented) Validate(src io.Reader) error {
return fmt.Errorf("%s: unimplemented", v)
}
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