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Improvements for the WebDAV backend

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* CreateDirectory() looks up the directory in the cache first and don't create
  it if found in cache
* ListFiles() puts subdirectories in the cache
* If CreateDirectory() encounters EOF, assume the directory already exists
This commit is contained in:
Gilbert Chen
2020-09-25 13:56:44 -04:00
parent 3f29ec2ffb
commit e3e3e97046
1 changed files with 25 additions and 17 deletions
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42
src/duplicacy_webdavstorage.go
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@@ -165,7 +165,7 @@ func (storage *WebDAVStorage) sendRequest(method string, uri string, depth int,
response, err := storage.client.Do(request)
if err != nil {
LOG_TRACE("WEBDAV_RETRY", "URL request '%s %s' returned an error (%v)", method, uri, err)
LOG_TRACE("WEBDAV_ERROR", "URL request '%s %s' returned an error (%v)", method, uri, err)
backoff = storage.retry(backoff)
continue
}
@@ -320,6 +320,12 @@ func (storage *WebDAVStorage) ListFiles(threadIndex int, dir string) (files []st
}
files = append(files, file)
sizes = append(sizes, int64(0))
// Add the directory to the directory cache
storage.directoryCacheLock.Lock()
storage.directoryCache[dir + file] = 1
storage.directoryCacheLock.Unlock()
}
}
@@ -391,21 +397,7 @@ func (storage *WebDAVStorage) createParentDirectory(threadIndex int, dir string)
}
parent := dir[:found]
storage.directoryCacheLock.Lock()
_, exist := storage.directoryCache[parent]
storage.directoryCacheLock.Unlock()
if exist {
return nil
}
err = storage.CreateDirectory(threadIndex, parent)
if err == nil {
storage.directoryCacheLock.Lock()
storage.directoryCache[parent] = 1
storage.directoryCacheLock.Unlock()
}
return err
return storage.CreateDirectory(threadIndex, parent)
}
// CreateDirectory creates a new directory.
@@ -418,19 +410,35 @@ func (storage *WebDAVStorage) CreateDirectory(threadIndex int, dir string) (err
return nil
}
storage.directoryCacheLock.Lock()
_, exist := storage.directoryCache[dir]
storage.directoryCacheLock.Unlock()
if exist {
return nil
}
// If there is an error in creating the parent directory, proceed anyway
storage.createParentDirectory(threadIndex, dir)
readCloser, _, err := storage.sendRequest("MKCOL", dir, 0, []byte(""))
if err != nil {
if err == errWebDAVMethodNotAllowed || err == errWebDAVMovedPermanently {
if err == errWebDAVMethodNotAllowed || err == errWebDAVMovedPermanently || err == io.EOF {
// We simply ignore these errors and assume that the directory already exists
LOG_TRACE("WEBDAV_MKDIR", "Can't create directory %s: %v; error ignored", dir, err)
storage.directoryCacheLock.Lock()
storage.directoryCache[dir] = 1
storage.directoryCacheLock.Unlock()
return nil
}
return err
}
io.Copy(ioutil.Discard, readCloser)
readCloser.Close()
storage.directoryCacheLock.Lock()
storage.directoryCache[dir] = 1
storage.directoryCacheLock.Unlock()
return nil
}