Upgrade bleve from v2.0.6 to v2.3.0 (#18132)

vendor/github.com/blevesearch/bleve/v2/index_impl.go

@@ -18,7 +18,9 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"io"
 	"os"
+	"path/filepath"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -910,3 +912,49 @@ func (m *searchHitSorter) Less(i, j int) bool {
 	c := m.sort.Compare(m.cachedScoring, m.cachedDesc, m.hits[i], m.hits[j])
 	return c < 0
 }
+
+func (i *indexImpl) CopyTo(d index.Directory) (err error) {
+	i.mutex.RLock()
+	defer i.mutex.RUnlock()
+
+	if !i.open {
+		return ErrorIndexClosed
+	}
+
+	indexReader, err := i.i.Reader()
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if cerr := indexReader.Close(); err == nil && cerr != nil {
+			err = cerr
+		}
+	}()
+
+	irc, ok := indexReader.(IndexCopyable)
+	if !ok {
+		return fmt.Errorf("index implementation does not support copy")
+	}
+
+	err = irc.CopyTo(d)
+	if err != nil {
+		return fmt.Errorf("error copying index metadata: %v", err)
+	}
+
+	// copy the metadata
+	return i.meta.CopyTo(d)
+}
+
+func (f FileSystemDirectory) GetWriter(filePath string) (io.WriteCloser,
+	error) {
+	dir, file := filepath.Split(filePath)
+	if dir != "" {
+		err := os.MkdirAll(filepath.Join(string(f), dir), os.ModePerm)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return os.OpenFile(filepath.Join(string(f), dir, file),
+		os.O_RDWR|os.O_CREATE, 0600)
+}