func (vfs FuseVfs) openQueryEntryDir(tx *storage.Tx, path []string) ([]fuse.DirEntry, fuse.Status) {
log.Infof(2, "BEGIN openQueryEntryDir(%v)", path)
defer log.Infof(2, "END openQueryEntryDir(%v)", path)
queryText := path[0]
expression, err := query.Parse(queryText)
if err != nil {
log.Fatalf("could not parse query: %v", err)
}
tagNames, err := query.TagNames(expression)
if err != nil {
log.Fatalf("could not identify tag names: %v", err)
}
tags, err := vfs.store.TagsByNames(tx, tagNames)
for _, tagName := range tagNames {
if !containsTag(tags, tagName) {
return nil, fuse.ENOENT
}
}
files, err := vfs.store.FilesForQuery(tx, expression, "", false, false, "name")
if err != nil {
log.Fatalf("could not query files: %v", err)
}
entries := make([]fuse.DirEntry, 0, len(files))
for _, file := range files {
linkName := vfs.getLinkName(file)
entries = append(entries, fuse.DirEntry{Name: linkName, Mode: fuse.S_IFLNK})
}
return entries, fuse.OK
}
func (vfs FuseVfs) getQueryEntryAttr(path []string) (*fuse.Attr, fuse.Status) {
log.Infof(2, "BEGIN getQueryEntryAttr(%v)", path)
defer log.Infof(2, "END getQueryEntryAttr(%v)", path)
if len(path) == 1 && path[0] == helpFilename {
now := time.Now()
return &fuse.Attr{Mode: fuse.S_IFREG | 0444, Nlink: 1, Size: uint64(len(queryDirHelp)), Mtime: uint64(now.Unix()), Mtimensec: uint32(now.Nanosecond())}, fuse.OK
}
name := path[len(path)-1]
if len(path) > 1 {
fileId := vfs.parseFileId(name)
if fileId != 0 {
return vfs.getFileEntryAttr(fileId)
}
return nil, fuse.ENOENT
}
queryText := path[0]
if queryText[len(queryText)-1] == ' ' {
// prevent multiple entries for same query when typing path in a GUI
return nil, fuse.ENOENT
}
expression, err := query.Parse(queryText)
if err != nil {
return nil, fuse.ENOENT
}
tx, err := vfs.store.Begin()
if err != nil {
log.Fatalf("could not begin transaction: %v", err)
}
defer tx.Commit()
tagNames, err := query.TagNames(expression)
if err != nil {
log.Fatalf("could not identify tag names: %v", err)
}
tags, err := vfs.store.TagsByNames(tx, tagNames)
for _, tagName := range tagNames {
if !containsTag(tags, tagName) {
return nil, fuse.ENOENT
}
}
q, err := vfs.store.Query(tx, queryText)
if err != nil {
log.Fatalf("could not retrieve query '%v': %v", queryText, err)
}
if q == nil {
_, err = vfs.store.AddQuery(tx, queryText)
if err != nil {
log.Fatalf("could not add query '%v': %v", queryText, err)
}
}
now := time.Now()
return &fuse.Attr{Mode: fuse.S_IFDIR | 0755, Nlink: 2, Size: uint64(0), Mtime: uint64(now.Unix()), Mtimensec: uint32(now.Nanosecond())}, fuse.OK
}
func listFilesForQuery(store *storage.Storage, tx *storage.Tx, queryText, path string, dirOnly, fileOnly, print0, showCount, explicitOnly, ignoreCase bool, sort string) (error, warnings) {
log.Info(2, "parsing query")
expression, err := query.Parse(queryText)
if err != nil {
return fmt.Errorf("could not parse query: %v", err), nil
}
log.Info(2, "checking tag names")
warnings := make(warnings, 0, 10)
tagNames, err := query.TagNames(expression)
if err != nil {
return fmt.Errorf("could not identify tag names: %v", err), nil
}
tags, err := store.TagsByCasedNames(tx, tagNames, ignoreCase)
for _, tagName := range tagNames {
if err := entities.ValidateTagName(tagName); err != nil {
warnings = append(warnings, err.Error())
continue
}
if !tags.ContainsCasedName(tagName, ignoreCase) {
warnings = append(warnings, fmt.Sprintf("no such tag '%v'", tagName))
continue
}
}
valueNames, err := query.ExactValueNames(expression)
if err != nil {
return fmt.Errorf("could not identify value names: %v", err), nil
}
values, err := store.ValuesByCasedNames(tx, valueNames, ignoreCase)
for _, valueName := range valueNames {
if err := entities.ValidateValueName(valueName); err != nil {
warnings = append(warnings, err.Error())
continue
}
if !values.ContainsCasedName(valueName, ignoreCase) {
warnings = append(warnings, fmt.Sprintf("no such value '%v'", valueName))
continue
}
}
log.Info(2, "querying database")
files, err := store.FilesForQuery(tx, expression, path, explicitOnly, ignoreCase, sort)
if err != nil {
if strings.Index(err.Error(), "parser stack overflow") > -1 {
return fmt.Errorf("the query is too complex (see the troubleshooting wiki for how to increase the stack size)"), warnings
} else {
return fmt.Errorf("could not query files: %v", err), warnings
}
}
if err = listFiles(tx, files, dirOnly, fileOnly, print0, showCount); err != nil {
return err, warnings
}
return nil, warnings
}