def import_csv(dataset, url, args):
"""
Import the csv data into the dataset
"""
csv_data_url, source_url = url
source = Source(dataset, shell_account(), csv_data_url)
# Analyse the csv data and add it to the source
# If we don't analyse it we'll be left with a weird message
source.analysis = analyze_csv(csv_data_url)
# Check to see if the dataset already has this source
for source_ in dataset.sources:
if source_.url == csv_data_url:
source = source_
break
db.session.add(source)
db.session.commit()
dataset.generate()
importer = CSVImporter(source)
importer.run(**vars(args))
# Check if imported from the file system (source and data url differ)
if csv_data_url != source_url:
# If we did, then we must update the source url based on the
# sources in the dataset model (so we need to fetch the source again
# or else we'll add a new one)
source = Source.by_id(source.id)
source.url = source_url
db.session.commit()
def create(self):
"""
Adds a new dataset dynamically through a POST request
"""
# User must be authenticated so we should have a user object in
# c.account, if not abort with error message
if not c.account:
abort(status_code=400, detail='user not authenticated')
# Check if the params are there ('metadata', 'csv_file')
if len(request.params) != 2:
abort(status_code=400, detail='incorrect number of params')
metadata = request.params['metadata'] \
if 'metadata' in request.params \
else abort(status_code=400, detail='metadata is missing')
csv_file = request.params['csv_file'] \
if 'csv_file' in request.params \
else abort(status_code=400, detail='csv_file is missing')
# We proceed with the dataset
try:
model = json.load(urllib2.urlopen(metadata))
except:
abort(status_code=400, detail='JSON model could not be parsed')
try:
log.info("Validating model")
model = validate_model(model)
except Invalid as i:
log.error("Errors occured during model validation:")
for field, error in i.asdict().items():
log.error("%s: %s", field, error)
abort(status_code=400, detail='Model is not well formed')
dataset = Dataset.by_name(model['dataset']['name'])
if dataset is None:
dataset = Dataset(model)
require.dataset.create()
dataset.managers.append(c.account)
dataset.private = True # Default value
db.session.add(dataset)
else:
require.dataset.update(dataset)
log.info("Dataset: %s", dataset.name)
source = Source(dataset=dataset, creator=c.account, url=csv_file)
log.info(source)
for source_ in dataset.sources:
if source_.url == csv_file:
source = source_
break
db.session.add(source)
db.session.commit()
# Send loading of source into celery queue
load_source.delay(source.id)
return to_jsonp(dataset_apply_links(dataset.as_dict()))
def test_view_source(self):
url_ = 'http://banana.com/split.csv'
source = Source(self.dataset, self.user, url_)
db.session.add(source)
db.session.commit()
response = self.app.get(url(controller='source',
action='view',
dataset='cra',
id=source.id),
extra_environ={'REMOTE_USER': '******'})
assert response.headers['Location'] == url_, response.headers
def load_with_model_and_csv(self, metadata, csv_file, private):
"""
Load a dataset using a metadata model file and a csv file
"""
if metadata is None:
response.status = 400
return to_jsonp({'errors': 'metadata is missing'})
if csv_file is None:
response.status = 400
return to_jsonp({'errors': 'csv_file is missing'})
# We proceed with the dataset
try:
model = json.load(urllib2.urlopen(metadata))
except:
response.status = 400
return to_jsonp({'errors': 'JSON model could not be parsed'})
try:
log.info("Validating model")
model = validate_model(model)
except Invalid as i:
log.error("Errors occured during model validation:")
for field, error in i.asdict().items():
log.error("%s: %s", field, error)
response.status = 400
return to_jsonp({'errors': 'Model is not well formed'})
dataset = Dataset.by_name(model['dataset']['name'])
if dataset is None:
dataset = Dataset(model)
require.dataset.create()
dataset.managers.append(c.account)
dataset.private = private
db.session.add(dataset)
else:
require.dataset.update(dataset)
log.info("Dataset: %s", dataset.name)
source = Source(dataset=dataset, creator=c.account, url=csv_file)
log.info(source)
for source_ in dataset.sources:
if source_.url == csv_file:
source = source_
break
db.session.add(source)
db.session.commit()
# Send loading of source into celery queue
load_source.delay(source.id)
return to_jsonp(dataset_apply_links(dataset.as_dict()))
def test_dimensions_edit_mask_with_data(self):
cra = Dataset.by_name('cra')
src = Source(cra, self.user, 'file:///dev/null')
src.analysis = {'columns': ['amount', 'etc']}
db.session.add(src)
db.session.commit()
response = self.app.get(url(controller='editor',
action='dimensions_edit',
dataset='cra'),
extra_environ={'REMOTE_USER': '******'})
assert 'cannot edit dimensions' in response.body
assert '"amount"' not in response.body
assert 'Update' not in response.body
def csvimport_fixture(name):
model_fp = csvimport_fixture_file(name, 'model.json')
mapping_fp = csvimport_fixture_file(name, 'mapping.json')
model = json.load(model_fp)
if mapping_fp:
model['mapping'] = json.load(mapping_fp)
dataset = Dataset(model)
dataset.generate()
db.session.add(dataset)
data_path = csvimport_fixture_path(name, 'data.csv')
user = make_account()
source = Source(dataset, user, data_path)
db.session.add(source)
db.session.commit()
return source
def create(self, dataset):
self._get_dataset(dataset)
require.dataset.update(c.dataset)
try:
schema = source_schema()
data = schema.deserialize(request.params)
source = Source(c.dataset, c.account, data['url'])
db.session.add(source)
db.session.commit()
analyze_source.apply_async(args=[source.id], countdown=2)
h.flash_success(_("The source has been created."))
redirect(
h.url_for(controller='editor',
action='index',
dataset=c.dataset.name))
except Invalid as i:
errors = i.asdict()
errors = [(k[len('source.'):], v) for k, v in errors.items()]
return self.new(dataset, dict(errors))
def create(self):
"""
Adds a new dataset dynamically through a POST request
"""
# User must be authenticated so we should have a user object in
# c.account, if not abort with error message
if not c.account:
abort(status_code=400, detail='user not authenticated')
# Parse the loading api parameters to get them into the right format
parser = LoadingAPIParamParser(request.params)
params, errors = parser.parse()
if errors:
response.status = 400
return to_jsonp({'errors': errors})
if params['metadata'] is None:
response.status = 400
return to_jsonp({'errors': 'metadata is missing'})
if params['csv_file'] is None:
response.status = 400
return to_jsonp({'errors': 'csv_file is missing'})
# We proceed with the dataset
try:
model = json.load(urllib2.urlopen(params['metadata']))
except:
response.status = 400
return to_jsonp({'errors': 'JSON model could not be parsed'})
try:
log.info("Validating model")
model = validate_model(model)
except Invalid as i:
log.error("Errors occured during model validation:")
for field, error in i.asdict().items():
log.error("%s: %s", field, error)
response.status = 400
return to_jsonp({'errors': 'Model is not well formed'})
dataset = Dataset.by_name(model['dataset']['name'])
if dataset is None:
dataset = Dataset(model)
require.dataset.create()
dataset.managers.append(c.account)
dataset.private = params['private']
db.session.add(dataset)
else:
require.dataset.update(dataset)
log.info("Dataset: %s", dataset.name)
source = Source(dataset=dataset,
creator=c.account,
url=params['csv_file'])
log.info(source)
for source_ in dataset.sources:
if source_.url == params['csv_file']:
source = source_
break
db.session.add(source)
db.session.commit()
# Send loading of source into celery queue
load_source.delay(source.id)
return to_jsonp(dataset_apply_links(dataset.as_dict()))
def create_budget_data_package(url, user, private):
try:
bdpkg = BudgetDataPackage(url)
except Exception as problem:
# Lots of different types of problems can arise with a
# BudgetDataPackage, but their message should be understandable
# so we catch just any Exception and email it's message to the user
log.error("Failed to parse budget data package: {0}".format(
problem.message))
return []
sources = []
for (idx, resource) in enumerate(bdpkg.resources):
dataset = Dataset.by_name(bdpkg.name)
if dataset is None:
# Get information from the descriptior file for the given
# resource (at index idx)
info = get_dataset_info_from_descriptor(bdpkg, idx)
# Set the dataset name based on the previously computed one
info['dataset']['name'] = bdpkg.name
# Create the model from the resource schema
model = create_model_from_schema(resource.schema)
# Set the default value for the time to the fiscal year of the
# resource, because it isn't included in the budget CSV so we
# won't be able to load it along with the data.
model['time']['default_value'] = resource.fiscalYear
# Add the model as the mapping
info['mapping'] = model
# Create the dataset
dataset = Dataset(info)
dataset.managers.append(user)
dataset.private = private
db.session.add(dataset)
db.session.commit()
else:
if not dataset.can_update(user):
log.error(
"User {0} not permitted to update dataset {1}".format(
user.name, bdpkg.name))
return []
if 'url' in resource:
resource_url = resource.url
elif 'path' in resource:
if 'base' in bdpkg:
resource_url = urlparse.urljoin(bdpkg.base, resource.path)
else:
resource_url = urlparse.urljoin(url, resource.path)
else:
log.error('Url not found')
return []
# We do not re-add old sources so if we find the same source
# we don't do anything, else we create the source and append it
# to the source list
for dataset_source in dataset.sources:
if dataset_source.url == resource_url:
break
else:
source = Source(dataset=dataset, creator=user, url=resource_url)
db.session.add(source)
db.session.commit()
sources.append(source)
return sources
