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"""ONAP SDK CPS dataspace module."""
# Copyright 2022 Orange, Deutsche Telekom AG
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from functools import wraps
from typing import Any, Dict, Iterable
from onapsdk.exceptions import (APIError, ResourceNotFound)
from .anchor import Anchor
from .cps_element import CpsElement
from .schemaset import SchemaSet, SchemaSetModuleReference
class Dataspace(CpsElement):
"""CPS dataspace class."""
def __init__(self, name: str) -> None:
"""Initialize dataspace object.
Args:
name (str): Dataspace name
"""
super().__init__()
self.name: str = name
def __repr__(self) -> str:
"""Human readable representation of the object.
Returns:
str: Human readable string
"""
return f"Dataspace(name={self.name})"
@property
def url(self) -> str:
"""Dataspace url.
Returns:
str: Dataspace url
"""
return f"{self._url}/dataspaces/{self.name}"
def exception_handler(function): # pylint: disable= no-self-argument
"""Exception handler.
Handling APIError and throwing ResourceNotFound if Data space does not exist.
"""
@wraps(function)
def wrapper(*args):
try:
return function(*args) # pylint: disable= not-callable
except APIError as error:
if (error.response_status_code == 400 and 'Dataspace not found' in str(error)):
raise ResourceNotFound(error) from error
raise
return wrapper
@classmethod
def create(cls, dataspace_name: str) -> "Dataspace":
"""Create dataspace with given name.
Args:
dataspace_name (str): Dataspace name
Returns:
Dataspace: Newly created dataspace
"""
cls.send_message(
"POST",
f"Create {dataspace_name} dataspace",
f"{cls._url}/dataspaces?dataspace-name={dataspace_name}",
auth=cls.auth
)
return Dataspace(dataspace_name)
@exception_handler
def create_anchor(self, schema_set: SchemaSet, anchor_name: str) -> Anchor:
"""Create anchor.
Args:
schema_set (SchemaSet): Schema set object which is going to be used to create anchor.
anchor_name (str): Anchor name
Returns:
Anchor: Created anchor
"""
self.send_message(
"POST",
"Get all CPS dataspace schemasets",
f"{self.url}/anchors/?schema-set-name={schema_set.name}&anchor-name={anchor_name}",
auth=self.auth
)
return Anchor(name=anchor_name, schema_set=schema_set)
@exception_handler
def get_anchors(self) -> Iterable[Anchor]:
"""Get all dataspace's anchors.
Iterable of related with dataspace anchors.
Yields:
Iterator[Anchor]: Anchor object
"""
try:
for anchor_data in self.send_message_json(\
"GET",\
"Get all CPS dataspace anchors",\
f"{self.url}/anchors",\
auth=self.auth\
):
yield Anchor(name=anchor_data["name"],
schema_set=SchemaSet(name=anchor_data["schemaSetName"],
dataspace=self))
except APIError as error:
if (error.response_status_code == 400 and 'Dataspace not found' in str(error)):
raise ResourceNotFound(error) from error
raise
@exception_handler
def get_anchor(self, anchor_name: str) -> Anchor:
"""Get dataspace anchor by name.
To get anchor there is no need to use `SchemaSet` object, but to create anchor it it.
Args:
anchor_name (str): Anchor name.
Returns:
Anchor: Anchor object
"""
anchor_data: Dict[str, Any] = self.send_message_json(
"GET",
f"Get {anchor_name} anchor",
f"{self.url}/anchors/{anchor_name}",
auth=self.auth
)
return Anchor(name=anchor_data["name"],
schema_set=SchemaSet(name=anchor_data["schemaSetName"],
dataspace=self))
@exception_handler
def get_schema_set(self, schema_set_name: str) -> SchemaSet:
"""Get schema set by name.
Args:
schema_set_name (str): Schema set name
Returns:
SchemaSet: Schema set object
"""
schema_set_data: Dict[str, Any] = self.send_message_json(
"GET",
f"Get CPS dataspace {schema_set_name} schemaset",
f"{self._url}/dataspaces/{self.name}/schema-sets/{schema_set_name}",
auth=self.auth
)
return SchemaSet(
name=schema_set_data["name"],
dataspace=self,
module_references=[
SchemaSetModuleReference(
name=module_reference_data.get("name"),
namespace=module_reference_data["namespace"],
revision=module_reference_data["revision"]
) for module_reference_data in schema_set_data["moduleReferences"]
]
)
@exception_handler
def create_schema_set(self, schema_set_name: str, schema_set: bytes) -> SchemaSet:
"""Create schema set.
Create CPS schema set in dataspace
Args:
schema_set_name (str): Schema set name
schema_set (bytes): Schema set YANG
Returns:
SchemaSet: Created schema set object
"""
self.send_message(
"POST",
"Create schema set",
f"{self._url}/dataspaces/{self.name}/schema-sets/",
files={"file": schema_set},
data={"schema-set-name": schema_set_name},
headers={}, # Leave headers empty to fill it correctly by `requests` library
auth=self.auth
)
return self.get_schema_set(schema_set_name)
def delete(self) -> None:
"""Delete dataspace."""
self.send_message(
"DELETE",
f"Delete {self.name} dataspace",
f"{self._url}/dataspaces?dataspace-name={self.name}",
auth=self.auth
)
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