Interface UriHandler

worker/backup_handler.go:84–106

UriHandler interface is implemented by URI scheme handlers. When adding new scheme handles, for example 'azure://', an object will implement this interface to supply Dgraph with a way to create or load backup files into DB. For all methods below, the URL object is parsed as described in `newHandler'

// For all methods below, the URL object is parsed as described in `newHandler' and
// the Processor object has the DB, estimated tablets size, and backup parameters.
type UriHandler interface {
	// CreateDir creates a directory relative to the root path of the handler.
	CreateDir(path string) error
	// CreateFile creates a file relative to the root path of the handler. It also makes the
	// handler's descriptor to point to this file.
	CreateFile(path string) (io.WriteCloser, error)
	// DirExists returns true if the directory relative to the root path of the handler exists.
	DirExists(path string) bool
	// FileExists returns true if the file relative to the root path of the handler exists.
	FileExists(path string) bool
	// JoinPath appends the given path to the root path of the handler.
	JoinPath(path string) string
	// ListPaths returns a list of all the valid paths from the given root path. The given root path
	// should be relative to the handler's root path.
	ListPaths(path string) []string
	// Read reads the file at given relative path and returns the read bytes.
	Read(path string) ([]byte, error)
	// Rename renames the src file to the destination file.
	Rename(src, dst string) error
	// Stream would stream the path via an instance of io.ReadCloser. Close must be called at the
	// end to release resources appropriately.
	Stream(path string) (io.ReadCloser, error)
}

// NewUriHandler parses the requested URI and finds the corresponding UriHandler.
// If the passed credentials are not nil, they will be used to override the