def transfer_workflow(workflow):
""" Enqueue workflow for transfer to an attached USB storage device.
Requires that the `python-dbus` package is installed.
Once the transfer was succesfully enqueued, watch for the
:py:data:`spreadsplug.web.tasks.on_transfer_started` which is emitted
when the transfer actually started and subsequently
:py:data:`spreadsplug.web.tasks.on_transfer_progressed` and
:py:data:`spreadsplug.web.tasks.on_transfer_completed`.
:param workflow: UUID or slug for the workflow to be transferred
:type workflow: str
:status 200: When the transfer was successfully enqueued.
:status 500: When the `python-dbus` package was not found.
:status 503: When no removable USB device could be found for
mounting.
"""
try:
stick = find_stick()
except ImportError:
raise ApiException(
"The transfer feature requires that the `python-dbus` module is "
"installed on the system.", error_type='transfer')
if stick is None:
raise ApiException(
"Could not find a removable devices to transfer to."
"If you have connected one, make sure that it is formatted with "
"the FAT32 file system", 503, error_type='transfer')
from tasks import transfer_to_stick
transfer_to_stick(workflow.id, app.config['base_path'])
return 'OK'
def transfer_workflow(workflow):
""" Transfer workflow to an attached USB storage device.
"""
try:
stick = find_stick()
except ImportError:
return jsonify({"error": "Missing package 'python-dbus', "
"please install."})
if stick is None:
return jsonify({"error": "Could not find removable device"}), 503
from tasks import transfer_to_stick
transfer_to_stick(workflow.id, app.config['base_path'])
return 'OK'
def transfer_workflow(workflow):
""" Transfer workflow to an attached USB storage device.
"""
try:
stick = find_stick()
except ImportError:
return jsonify({"error": "Missing package 'python-dbus', "
"please install."})
if stick is None:
return jsonify({"error": "Could not find removable device"}), 503
from tasks import transfer_to_stick
transfer_to_stick(workflow.id, app.config['base_path'])
return 'OK'
def transfer_to_stick(wf_id, base_path):
workflow = Workflow.find_by_id(base_path, wf_id)
stick = find_stick()
files = list(workflow.path.rglob('*'))
num_files = len(files)
# Filter out problematic characters
clean_name = (workflow.path.name.replace(':', '_').replace('/', '_'))
workflow.status['step'] = 'transfer'
try:
if IS_WIN:
target_path = Path(stick) / clean_name
else:
mount = stick.get_dbus_method(
"FilesystemMount",
dbus_interface="org.freedesktop.UDisks.Device")
mount_point = mount('', [])
target_path = Path(mount_point) / clean_name
if target_path.exists():
shutil.rmtree(unicode(target_path))
target_path.mkdir()
signals['transfer:started'].send(workflow)
for num, path in enumerate(files, 1):
signals['transfer:progressed'].send(workflow,
progress=(num / num_files) *
0.79,
status=path.name)
workflow.status['step_done'] = (num / num_files) * 0.79
target = target_path / path.relative_to(workflow.path)
if path.is_dir():
target.mkdir()
else:
shutil.copyfile(unicode(path), unicode(target))
finally:
if 'mount_point' in locals():
signals['transfer:progressed'].send(workflow,
progress=0.8,
status="Syncing...")
workflow.status['step_done'] = 0.8
unmount = stick.get_dbus_method(
"FilesystemUnmount",
dbus_interface="org.freedesktop.UDisks.Device")
unmount([], timeout=1e6) # dbus-python doesn't know an infinite
# timeout... unmounting sometimes takes a
# long time, since the device has to be
# synced.
signals['transfer:completed'].send(workflow)
workflow.status['step'] = None
def transfer_to_stick(wf_id, base_path):
workflow = Workflow.find_by_id(base_path, wf_id)
stick = find_stick()
files = list(workflow.path.rglob('*'))
num_files = len(files)
# Filter out problematic characters
clean_name = (workflow.path.name.replace(':', '_')
.replace('/', '_'))
workflow.status['step'] = 'transfer'
try:
if IS_WIN:
target_path = Path(stick)/clean_name
else:
mount = stick.get_dbus_method(
"FilesystemMount",
dbus_interface="org.freedesktop.UDisks.Device")
mount_point = mount('', [])
target_path = Path(mount_point)/clean_name
if target_path.exists():
shutil.rmtree(unicode(target_path))
target_path.mkdir()
signals['transfer:started'].send(workflow)
for num, path in enumerate(files, 1):
signals['transfer:progressed'].send(
workflow, progress=(num/num_files)*0.79, status=path.name)
workflow.status['step_done'] = (num/num_files)*0.79
target = target_path/path.relative_to(workflow.path)
if path.is_dir():
target.mkdir()
else:
shutil.copyfile(unicode(path), unicode(target))
finally:
if 'mount_point' in locals():
signals['transfer:progressed'].send(workflow, progress=0.8,
status="Syncing...")
workflow.status['step_done'] = 0.8
unmount = stick.get_dbus_method(
"FilesystemUnmount",
dbus_interface="org.freedesktop.UDisks.Device")
unmount([], timeout=1e6) # dbus-python doesn't know an infinite
# timeout... unmounting sometimes takes a
# long time, since the device has to be
# synced.
signals['transfer:completed'].send(workflow)
workflow.status['step'] = None
def transfer_workflow(workflow):
""" Transfer workflow to an attached USB storage device.
"""
try:
stick = find_stick()
except ImportError:
raise ApiException(
"The transfer feature requires that the `python-dbus` module is "
"installed on the system.", error_type='transfer')
if stick is None:
raise ApiException(
"Could not find a removable devices to transfer to."
"If you have connected one, make sure that it is formatted with "
"the FAT32 file system", 503, error_type='transfer')
from tasks import transfer_to_stick
transfer_to_stick(workflow.id, app.config['base_path'])
return 'OK'
