4e8e71e4e2
This is not yet working, it's just a direct copy of the Manager of Flamenco 2, with Logrus replaced by Zerolog. The API has been documented in flamenco-manager.yaml as a starting point for the integration.
108 lines
3.4 KiB
Go
108 lines
3.4 KiB
Go
/* (c) 2019, Blender Foundation - Sybren A. Stüvel
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package filestore
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import (
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"errors"
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"os"
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"path"
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"path/filepath"
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)
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type storageBin struct {
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basePath string
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dirName string
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hasTempSuffix bool
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fileSuffix string
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}
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var (
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errNoWriteAllowed = errors.New("writing is only allowed in storage bins with a temp suffix")
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)
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func (s *storageBin) storagePrefix(partialPath string) string {
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return path.Join(s.basePath, s.dirName, partialPath)
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}
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// Returns whether 'someFullPath' is pointing to a path inside our storage for the given partial path.
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// Only looks at the paths, does not perform any filesystem checks to see the file is actually there.
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func (s *storageBin) contains(partialPath, someFullPath string) bool {
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expectedPrefix := s.storagePrefix(partialPath)
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return len(expectedPrefix) < len(someFullPath) && expectedPrefix == someFullPath[:len(expectedPrefix)]
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}
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// pathOrGlob returns either a path, or a glob when hasTempSuffix=true.
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func (s *storageBin) pathOrGlob(partialPath string) string {
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pathOrGlob := s.storagePrefix(partialPath)
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if s.hasTempSuffix {
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pathOrGlob += "-*"
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}
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pathOrGlob += s.fileSuffix
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return pathOrGlob
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}
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// resolve finds a file '{basePath}/{dirName}/partialPath*{fileSuffix}'
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// and returns its path. The * glob pattern is only used when
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// hasTempSuffix is true.
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func (s *storageBin) resolve(partialPath string) string {
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pathOrGlob := s.pathOrGlob(partialPath)
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if !s.hasTempSuffix {
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_, err := os.Stat(pathOrGlob)
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if err != nil {
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return ""
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}
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return pathOrGlob
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}
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matches, _ := filepath.Glob(pathOrGlob)
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if len(matches) == 0 {
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return ""
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}
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return matches[0]
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}
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// pathFor(somePath) returns that path inside the storage bin, including proper suffix.
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// Note that this is only valid for bins without temp suffixes.
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func (s *storageBin) pathFor(partialPath string) string {
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return s.storagePrefix(partialPath) + s.fileSuffix
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}
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// openForWriting makes sure there is a place to write to.
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func (s *storageBin) openForWriting(partialPath string) (*os.File, error) {
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if !s.hasTempSuffix {
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return nil, errNoWriteAllowed
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}
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pathOrGlob := s.pathOrGlob(partialPath)
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dirname, filename := path.Split(pathOrGlob)
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if err := os.MkdirAll(dirname, 0777); err != nil {
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return nil, err
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}
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// This creates the file with 0666 permissions (before umask).
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// Note that this is our own TempFile() and not ioutils.TempFile().
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return TempFile(dirname, filename)
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}
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