def create_image (_qemu_img_path, _image, _t = _tracer, _e = _enforcer) :
_outcome = None
if _outcome is None :
if _qemu_img_path is None :
_qemu_img_path = default_qemu_img_path
_outcome = check_qemu_img_path (_qemu_img_path, _t = _t, _e = _e)
if _outcome :
_outcome = None
if _outcome is None :
_outcome = validate_image_definition (_image, null_uuid_allowed = True, _t = _t, _e = _e)
if _outcome :
_outcome = None
if _outcome is None :
if os_path.exists (_image.path) :
_outcome = _failed ('image file already exists',
format = _image.format, size = _image.size, path = _image.path, __log = _t.e)
if _outcome is None :
if not os_path.exists (os_path.dirname (_image.path)) :
_outcome = _failed ('image directory does not exist',
format = _image.format, size = _image.size, path = _image.path, __log = _t.e)
if _outcome is None :
if not os_path.isdir (os_path.dirname (_image.path)) :
_outcome = _failed ('image directory is not a directory',
format = _image.format, size = _image.size, path = _image.path, __log = _t.e)
if _outcome is None :
_qemu_img_arguments = build_qemu_img_create_arguments (_qemu_img_path, _image, _t = _t, _e = _e)
if _outcome is None :
_t.d and _t.d ('creating image',
format = _image.format, size = _image.size, path = _image.path,
qemu_img_path = _qemu_img_path, qemu_img_arguments = _qemu_img_arguments)
_outcome = processes.execute_and_wait (_qemu_img_path, _qemu_img_arguments, _t = _t, _e = _e)
if not _outcome :
_outcome = _failed ('error encountered while executing `qemu-img`',
format = _image.format, size = _image.size, path = _image.path,
qemu_img_path = _qemu_img_path, qemu_img_arguments = _qemu_img_arguments, __log = _t.e)
elif _outcome.exit != 0 :
_outcome = _failed ('error encountered while creating image file',
format = _image.format, size = _image.size, path = _image.path,
qemu_img_path = _qemu_img_path, qemu_img_arguments = _qemu_img_arguments,
exit = _outcome.exit, stdout = _outcome.stdout, stderr = _outcome.stderr, __log = _t.e)
else :
_outcome = None
if _outcome is None :
_outcome = _succeeded (__log = _t.d)
return _outcome
def inspect_image (_qemu_img_path, _image_path, _t = _tracer, _e = _enforcer) :
_e and _e.enforce_string (_image_path)
_outcome = None
if _outcome is None :
if _qemu_img_path is None :
_qemu_img_path = default_qemu_img_path
_outcome = check_qemu_img_path (_qemu_img_path, _t = _t, _e = _e)
if _outcome :
_outcome = None
if _outcome is None :
if not os_path.exists (_image_path) :
_outcome = _failed ('image file does not exist', path = _image_path, __log = _t.e)
if _outcome is None :
if not os_path.isfile (_image_path) :
_outcome = _failed ('image file is not a file', path = _image_path, __log = _t.e)
if _outcome is None :
_qemu_img_arguments = build_qemu_img_info_arguments (_qemu_img_path, _image_path, _t = _t, _e = _e)
if _outcome is None :
_t.d and _t.d ('inspecting image',
path = _image_path,
qemu_img_path = _qemu_img_path, qemu_img_arguments = _qemu_img_arguments)
_outcome = processes.execute_and_wait (_qemu_img_path, _qemu_img_arguments, _t = _t, _e = _e)
if not _outcome :
_outcome = _failed ('error encountered while executing `qemu-img`',
path = _image_path,
qemu_img_path = _qemu_img_path, qemu_img_arguments = _qemu_img_arguments, __log = _t.e)
elif _outcome.exit != 0 :
_outcome = _failed ('error encountered while inspecting image file',
path = _image_path,
qemu_img_path = _qemu_img_path, qemu_img_arguments = _qemu_img_arguments,
exit = _outcome.exit, stdout = _outcome.stdout, stderr = _outcome.stderr, __log = _t.e)
else :
_qemu_img_output = _outcome.stdout
_outcome = None
if _outcome is None :
_outcome = parse_qemu_img_info_output (_image_path, _qemu_img_output, _t = _t, _e = _e)
if _outcome is None :
_outcome = _succeeded (__log = _t.d)
return _outcome
