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103 lines
2.1 KiB
103 lines
2.1 KiB
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package bleve
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import (
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"context"
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"fmt"
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"code.gitea.io/gitea/modules/indexer/internal"
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"code.gitea.io/gitea/modules/log"
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"github.com/blevesearch/bleve/v2"
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"github.com/blevesearch/bleve/v2/mapping"
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"github.com/ethantkoenig/rupture"
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)
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var _ internal.Indexer = &Indexer{}
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// Indexer represents a basic bleve indexer implementation
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type Indexer struct {
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Indexer bleve.Index
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indexDir string
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version int
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mappingGetter MappingGetter
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}
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type MappingGetter func() (mapping.IndexMapping, error)
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func NewIndexer(indexDir string, version int, mappingGetter func() (mapping.IndexMapping, error)) *Indexer {
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return &Indexer{
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indexDir: indexDir,
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version: version,
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mappingGetter: mappingGetter,
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}
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}
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// Init initializes the indexer
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func (i *Indexer) Init(_ context.Context) (bool, error) {
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if i == nil {
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return false, fmt.Errorf("cannot init nil indexer")
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}
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if i.Indexer != nil {
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return false, fmt.Errorf("indexer is already initialized")
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}
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indexer, version, err := openIndexer(i.indexDir, i.version)
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if err != nil {
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return false, err
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}
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if indexer != nil {
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i.Indexer = indexer
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return true, nil
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}
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if version != 0 {
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log.Warn("Found older bleve index with version %d, Gitea will remove it and rebuild", version)
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}
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indexMapping, err := i.mappingGetter()
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if err != nil {
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return false, err
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}
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indexer, err = bleve.New(i.indexDir, indexMapping)
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if err != nil {
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return false, err
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}
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if err = rupture.WriteIndexMetadata(i.indexDir, &rupture.IndexMetadata{
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Version: i.version,
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}); err != nil {
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return false, err
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}
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i.Indexer = indexer
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return false, nil
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}
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// Ping checks if the indexer is available
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func (i *Indexer) Ping(_ context.Context) error {
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if i == nil {
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return fmt.Errorf("cannot ping nil indexer")
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}
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if i.Indexer == nil {
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return fmt.Errorf("indexer is not initialized")
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}
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return nil
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}
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func (i *Indexer) Close() {
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if i == nil {
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return
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}
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if err := i.Indexer.Close(); err != nil {
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log.Error("Failed to close bleve indexer in %q: %v", i.indexDir, err)
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}
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i.Indexer = nil
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}
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