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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
package autorest
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/Azure/azure-sdk-for-go/eng/tools/generator/autorest/model"
)
// MetadataProcessError ...
type MetadataProcessError struct {
MetadataLocation string
Errors []error
}
// Error ...
func (e *MetadataProcessError) Error() string {
return fmt.Sprintf("total %d error(s) during processing metadata %s: %+v", len(e.Errors), e.MetadataLocation, e.Errors)
}
func (e *MetadataProcessError) add(err error) {
e.Errors = append(e.Errors, err)
}
// MetadataProcessor processes the metadata
type MetadataProcessor struct {
metadataOutputFolder string
}
// NewMetadataProcessorFromLocation creates a new MetadataProcessor using the metadata output folder location
func NewMetadataProcessorFromLocation(metadataOutput string) *MetadataProcessor {
return &MetadataProcessor{
metadataOutputFolder: metadataOutput,
}
}
// Process returns the metadata result: a map from tag to Metadata, and an error if there is anything that could not be processed.
// the error returned must be of type *MetadataProcessError
func (p MetadataProcessor) Process() (map[string]model.Metadata, error) {
fi, err := ioutil.ReadDir(p.metadataOutputFolder)
if err != nil {
return nil, &MetadataProcessError{
MetadataLocation: p.metadataOutputFolder,
Errors: []error{err},
}
}
result := make(map[string]model.Metadata)
metadataErr := &MetadataProcessError{
MetadataLocation: p.metadataOutputFolder,
}
for _, f := range fi {
// a metadata output must be a json file
if f.IsDir() || !strings.HasSuffix(f.Name(), ".json") {
continue
}
file, err := os.Open(filepath.Join(p.metadataOutputFolder, f.Name()))
if err != nil {
metadataErr.add(err)
continue
}
metadata, err := model.NewMetadataFrom(file)
if err != nil {
metadataErr.add(err)
continue
}
tag := strings.TrimSuffix(f.Name(), ".json")
result[tag] = metadata
}
if len(metadataErr.Errors) != 0 {
return result, metadataErr
}
return result, nil
}
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