class PosixBackendArchive(AbstractBackendArchive):
"""Class that implements the abstract base class for the posix
archive interface backend"""
def __init__(self, prefix, user, auth):
super(PosixBackendArchive, self).__init__(prefix, user, auth)
self._prefix = prefix
self._user = user
self._auth = auth
self._file = None
def open(self, filepath, mode):
"""Open a posix file"""
#want to close any open files first
try:
if self._file:
self.close()
except ArchiveInterfaceError as ex:
err_str = "Can't close previous posix file before opening new "\
"one with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
try:
fpath = un_abs_path(filepath)
filename = os.path.join(self._prefix, fpath)
self._file = ExtendedFile(filename, mode)
return self
except Exception as ex:
err_str = "Can't open posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def close(self):
"""Close a posix file"""
try:
if self._file:
self._file.close()
self._file = None
except Exception as ex:
err_str = "Can't close posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def read(self, blocksize):
"""Read a posix file"""
try:
if self._file:
return self._file.read(blocksize)
except Exception as ex:
err_str = "Can't read posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def write(self, buf):
"""Write a posix file to the archive"""
try:
if self._file:
return self._file.write(buf)
except Exception as ex:
err_str = "Can't write posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def set_mod_time(self, mod_time):
"""Set the mod time on a posix file"""
try:
if self._file:
self._file.set_mod_time(mod_time)
except Exception as ex:
err_str = "Can't set posix file mod time with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def stage(self):
"""Stage a posix file (no-opt essentially)"""
try:
if self._file:
return self._file.stage()
except Exception as ex:
err_str = "Can't stage posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def status(self):
"""Get the status of a posix file"""
try:
if self._file:
return self._file.status()
except Exception as ex:
err_str = "Can't get posix file status with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
class PosixBackendArchive(AbstractBackendArchive):
"""Class that implements the abstract base class for the posix
archive interface backend"""
def __init__(self, prefix):
super(PosixBackendArchive, self).__init__(prefix)
self._prefix = prefix
self._file = None
def open(self, filepath, mode):
"""Open a posix file"""
#want to close any open files first
try:
if self._file:
self.close()
except ArchiveInterfaceError as ex:
err_str = "Can't close previous posix file before opening new "\
"one with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
try:
fpath = un_abs_path(filepath)
filename = os.path.join(self._prefix, fpath)
self._file = ExtendedFile(filename, mode)
return self
except Exception as ex:
err_str = "Can't open posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def close(self):
"""Close a posix file"""
try:
if self._file:
self._file.close()
self._file = None
except Exception as ex:
err_str = "Can't close posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def read(self, blocksize):
"""Read a posix file"""
try:
if self._file:
return self._file.read(blocksize)
except Exception as ex:
err_str = "Can't read posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def write(self, buf):
"""Write a posix file to the archive"""
try:
if self._file:
return self._file.write(buf)
except Exception as ex:
err_str = "Can't write posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def set_mod_time(self, mod_time):
"""Set the mod time on a posix file"""
try:
if self._file:
self._file.set_mod_time(mod_time)
except Exception as ex:
err_str = "Can't set posix file mod time with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def stage(self):
"""Stage a posix file (no-opt essentially)"""
try:
if self._file:
return self._file.stage()
except Exception as ex:
err_str = "Can't stage posix file with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
def status(self):
"""Get the status of a posix file"""
try:
if self._file:
return self._file.status()
except Exception as ex:
err_str = "Can't get posix file status with error: " + str(ex)
raise ArchiveInterfaceError(err_str)
