This document is for an old release of Galaxy. You can alternatively view this page in the latest release if it exists or view the top of the latest release's documentation.
Source code for galaxy.util.renamed_temporary_file
"""Safely write file to temporary file and then move file into place.""" # Copied from https://stackoverflow.com/a/12007885. import os import tempfile[docs]class RenamedTemporaryFile(object): """ A temporary file object which will be renamed to the specified path on exit. """[docs] def __init__(self, final_path, **kwargs): """ >>> dir = tempfile.mkdtemp() >>> with RenamedTemporaryFile(os.path.join(dir, 'test.txt'), mode="w") as out: ... _ = out.write('bla') """ tmpfile_dir = kwargs.pop('dir', None) # Put temporary file in the same directory as the location for the # final file so that an atomic move into place can occur. if tmpfile_dir is None: tmpfile_dir = os.path.dirname(final_path) self.tmpfile = tempfile.NamedTemporaryFile(dir=tmpfile_dir, delete=False, **kwargs) self.final_path = final_pathdef __getattr__(self, attr): """ Delegate attribute access to the underlying temporary file object. """ return getattr(self.tmpfile, attr) def __enter__(self): self.tmpfile.__enter__() return self def __exit__(self, exc_type, exc_val, exc_tb): if exc_type is None: self.tmpfile.flush() result = self.tmpfile.__exit__(exc_type, exc_val, exc_tb) os.rename(self.tmpfile.name, self.final_path) else: result = self.tmpfile.__exit__(exc_type, exc_val, exc_tb) return result