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// Copyright 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
// Copied and modified from https://github.com/ethantkoenig/rupture (MIT License)
package bleve
import (
"os"
"path/filepath"
"code.gitea.io/gitea/modules/json"
)
const metaFilename = "rupture_meta.json"
func indexMetadataPath(dir string) string {
return filepath.Join(dir, metaFilename)
}
// IndexMetadata contains metadata about a bleve index.
type IndexMetadata struct {
// The version of the data in the index. This can be useful for tracking
// schema changes or data migrations.
Version int `json:"version"`
}
// readIndexMetadata returns the metadata for the index at the specified path.
// If no such index metadata exists, an empty metadata and a nil error are
// returned.
func readIndexMetadata(path string) (*IndexMetadata, error) {
meta := &IndexMetadata{}
metaPath := indexMetadataPath(path)
if _, err := os.Stat(metaPath); os.IsNotExist(err) {
return meta, nil
} else if err != nil {
return nil, err
}
metaBytes, err := os.ReadFile(metaPath)
if err != nil {
return nil, err
}
return meta, json.Unmarshal(metaBytes, &meta)
}
// writeIndexMetadata writes metadata for the index at the specified path.
func writeIndexMetadata(path string, meta *IndexMetadata) error {
metaBytes, err := json.Marshal(meta)
if err != nil {
return err
}
return os.WriteFile(indexMetadataPath(path), metaBytes, 0o644)
}
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