def __init__(self, api_client):
self.client = DeltaPipelinesService(api_client)
self.dbfs_client = DbfsApi(api_client)
class PipelinesApi(object):
def __init__(self, api_client):
self.client = DeltaPipelinesService(api_client)
self.dbfs_client = DbfsApi(api_client)
def create(self, spec, allow_duplicate_names, headers=None):
data = self._upload_libraries_and_update_spec(spec)
data['allow_duplicate_names'] = allow_duplicate_names
return self.client.client.perform_query('POST',
'/pipelines',
data=data,
headers=headers)
def deploy(self, spec, allow_duplicate_names, headers=None):
data = self._upload_libraries_and_update_spec(spec)
data['allow_duplicate_names'] = allow_duplicate_names
pipeline_id = data['id']
self.client.client.perform_query('PUT',
'/pipelines/{}'.format(pipeline_id),
data=data,
headers=headers)
def delete(self, pipeline_id, headers=None):
self.client.delete(pipeline_id, headers)
def get(self, pipeline_id, headers=None):
return self.client.get(pipeline_id, headers)
def list(self, headers=None):
def call(page_token=None, max_results=None, order_by=None):
_data = {}
if page_token:
_data["pagination.page_token"] = page_token
if max_results:
_data["pagination.max_results"] = max_results
if order_by:
_data["pagination.order_by"] = order_by
return self.client.client.perform_query('GET',
'/pipelines',
data=_data,
headers=headers)
response = call()
pipelines = response.get("statuses", [])
while "next_page_token" in response.get("pagination", {}):
response = call(
page_token=response["pagination"]["next_page_token"])
pipelines.extend(response.get("statuses", []))
return pipelines
def reset(self, pipeline_id, headers=None):
self.client.reset(pipeline_id, headers)
def run(self, pipeline_id, headers=None):
self.client.run(pipeline_id, headers)
def stop(self, pipeline_id, headers=None):
self.client.stop(pipeline_id, headers)
def _upload_libraries_and_update_spec(self, spec):
spec = copy.deepcopy(spec)
lib_objects = LibraryObject.from_json(spec.get('libraries', []))
local_lib_objects, external_lib_objects = self._identify_local_libraries(
lib_objects)
spec['libraries'] = LibraryObject.to_json(
external_lib_objects +
self._upload_local_libraries(local_lib_objects))
return spec
@staticmethod
def _identify_local_libraries(lib_objects):
"""
Partitions the given set of libraries into local and those already present in dbfs/s3 etc.
Local libraries are (currently) jar files with a file scheme or no scheme at all.
All other libraries should be present in a supported external source.
:param lib_objects: List[LibraryObject]
:return: List[List[LibraryObject], List[LibraryObject]] ([Local, External])
"""
local_lib_objects, external_lib_objects = [], []
for lib_object in lib_objects:
if lib_object.lib_type == 'maven':
external_lib_objects.append(lib_object)
continue
parsed_uri = urllib.parse.urlparse(lib_object.path)
if lib_object.lib_type in supported_lib_types and parsed_uri.scheme == '':
local_lib_objects.append(lib_object)
elif lib_object.lib_type in supported_lib_types and parsed_uri.scheme.lower(
) == 'file':
# exactly 1 or 3
if parsed_uri.path.startswith('//') or parsed_uri.netloc != '':
raise RuntimeError(
'invalid file uri scheme, '
'did you mean to use file:/ or file:///')
local_lib_objects.append(
LibraryObject(lib_object.lib_type, parsed_uri.path))
else:
external_lib_objects.append(lib_object)
return local_lib_objects, external_lib_objects
def _upload_local_libraries(self, local_lib_objects):
remote_lib_objects = [
LibraryObject(llo.lib_type, self._get_hashed_path(llo.path))
for llo in local_lib_objects
]
transformed_remote_lib_objects = [
LibraryObject(rlo.lib_type, DbfsPath(rlo.path))
for rlo in remote_lib_objects
]
upload_files = [
llo_tuple for llo_tuple in zip(local_lib_objects,
transformed_remote_lib_objects)
if not self.dbfs_client.file_exists(llo_tuple[1].path)
]
for llo, rlo in upload_files:
self.dbfs_client.put_file(llo.path, rlo.path, False)
return remote_lib_objects
@staticmethod
def _get_hashed_path(path):
"""
Finds the corresponding dbfs file path for the file located at the supplied path by
calculating its hash using SHA1.
:param path: Local File Path
:return: Remote Path (pipeline_base_dir + file_hash (dot) file_extension)
"""
hash_buffer = sha1()
with open(path, 'rb') as f:
while True:
data = f.read(BUFFER_SIZE)
if not data:
break
hash_buffer.update(data)
file_hash = hash_buffer.hexdigest()
# splitext includes the period in the extension
extension = os.path.splitext(path)[1][1:]
if extension == 'whl':
# Wheels need to follow the format described in the PEP, so we simply
# pre-pend the content hash to the wheel_name
# basename in Python returns the extension as well
wheel_name = os.path.basename(path)
path = '{}/{}/{}'.format(base_pipelines_dir, file_hash, wheel_name)
else:
path = '{}/{}.{}'.format(base_pipelines_dir, file_hash, extension)
return path