# coding=utf-8
# --------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.
# Code generated by Microsoft (R) AutoRest Code Generator.
# Changes may cause incorrect behavior and will be lost if the code is regenerated.
# --------------------------------------------------------------------------
from typing import TYPE_CHECKING
import warnings

from azure.core.exceptions import ClientAuthenticationError, HttpResponseError, ResourceExistsError, ResourceNotFoundError, map_error
from azure.core.paging import ItemPaged
from azure.core.pipeline import PipelineResponse
from azure.core.pipeline.transport import HttpRequest, HttpResponse
from azure.mgmt.core.exceptions import ARMErrorFormat

from .. import models as _models

if TYPE_CHECKING:
    # pylint: disable=unused-import,ungrouped-imports
    from typing import Any, Callable, Dict, Generic, Iterable, Optional, TypeVar

    T = TypeVar('T')
    ClsType = Optional[Callable[[PipelineResponse[HttpRequest, HttpResponse], T, Dict[str, Any]], Any]]

class RoleAssignmentsOperations(object):
    """RoleAssignmentsOperations operations.

    You should not instantiate this class directly. Instead, you should create a Client instance that
    instantiates it for you and attaches it as an attribute.

    :ivar models: Alias to model classes used in this operation group.
    :type models: ~azure.mgmt.authorization.v2020_04_01_preview.models
    :param client: Client for service requests.
    :param config: Configuration of service client.
    :param serializer: An object model serializer.
    :param deserializer: An object model deserializer.
    """

    models = _models

    def __init__(self, client, config, serializer, deserializer):
        self._client = client
        self._serialize = serializer
        self._deserialize = deserializer
        self._config = config

    def list_for_resource(
        self,
        resource_group_name,  # type: str
        resource_provider_namespace,  # type: str
        parent_resource_path,  # type: str
        resource_type,  # type: str
        resource_name,  # type: str
        filter=None,  # type: Optional[str]
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> Iterable["_models.RoleAssignmentListResult"]
        """List role assignments for a resource.

        :param resource_group_name: The name of the resource group. The name is case insensitive.
        :type resource_group_name: str
        :param resource_provider_namespace: The namespace of the resource provider.
        :type resource_provider_namespace: str
        :param parent_resource_path: The parent resource identity.
        :type parent_resource_path: str
        :param resource_type: The resource type of the resource.
        :type resource_type: str
        :param resource_name: The name of the resource to get role assignments for.
        :type resource_name: str
        :param filter: The filter to apply on the operation. Use $filter=atScope() to return all role
         assignments at or above the scope. Use $filter=principalId eq {id} to return all role
         assignments at, above or below the scope for the specified principal.
        :type filter: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either RoleAssignmentListResult or the result of cls(response)
        :rtype: ~azure.core.paging.ItemPaged[~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignmentListResult]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignmentListResult"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.list_for_resource.metadata['url']  # type: ignore
                path_format_arguments = {
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
                    'resourceProviderNamespace': self._serialize.url("resource_provider_namespace", resource_provider_namespace, 'str', skip_quote=True),
                    'parentResourcePath': self._serialize.url("parent_resource_path", parent_resource_path, 'str', skip_quote=True),
                    'resourceType': self._serialize.url("resource_type", resource_type, 'str', skip_quote=True),
                    'resourceName': self._serialize.url("resource_name", resource_name, 'str'),
                    'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                if filter is not None:
                    query_parameters['$filter'] = self._serialize.query("filter", filter, 'str')
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
                if tenant_id is not None:
                    query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        def extract_data(pipeline_response):
            deserialized = self._deserialize('RoleAssignmentListResult', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, iter(list_of_elem)

        def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

            return pipeline_response

        return ItemPaged(
            get_next, extract_data
        )
    list_for_resource.metadata = {'url': '/subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{parentResourcePath}/{resourceType}/{resourceName}/providers/Microsoft.Authorization/roleAssignments'}  # type: ignore

    def list_for_resource_group(
        self,
        resource_group_name,  # type: str
        filter=None,  # type: Optional[str]
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> Iterable["_models.RoleAssignmentListResult"]
        """List role assignments for a resource group.

        :param resource_group_name: The name of the resource group. The name is case insensitive.
        :type resource_group_name: str
        :param filter: The filter to apply on the operation. Use $filter=atScope() to return all role
         assignments at or above the scope. Use $filter=principalId eq {id} to return all role
         assignments at, above or below the scope for the specified principal.
        :type filter: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either RoleAssignmentListResult or the result of cls(response)
        :rtype: ~azure.core.paging.ItemPaged[~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignmentListResult]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignmentListResult"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.list_for_resource_group.metadata['url']  # type: ignore
                path_format_arguments = {
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str', max_length=90, min_length=1),
                    'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                if filter is not None:
                    query_parameters['$filter'] = self._serialize.query("filter", filter, 'str')
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
                if tenant_id is not None:
                    query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        def extract_data(pipeline_response):
            deserialized = self._deserialize('RoleAssignmentListResult', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, iter(list_of_elem)

        def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

            return pipeline_response

        return ItemPaged(
            get_next, extract_data
        )
    list_for_resource_group.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Authorization/roleAssignments'}  # type: ignore

    def delete(
        self,
        scope,  # type: str
        role_assignment_name,  # type: str
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> Optional["_models.RoleAssignment"]
        """Delete a role assignment.

        :param scope: The scope of the role assignment to delete.
        :type scope: str
        :param role_assignment_name: The name of the role assignment to delete.
        :type role_assignment_name: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: RoleAssignment, or the result of cls(response)
        :rtype: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignment or None
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType[Optional["_models.RoleAssignment"]]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        # Construct URL
        url = self.delete.metadata['url']  # type: ignore
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'roleAssignmentName': self._serialize.url("role_assignment_name", role_assignment_name, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
        if tenant_id is not None:
            query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        request = self._client.delete(url, query_parameters, header_parameters)
        pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 204]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
            raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

        deserialized = None
        if response.status_code == 200:
            deserialized = self._deserialize('RoleAssignment', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    delete.metadata = {'url': '/{scope}/providers/Microsoft.Authorization/roleAssignments/{roleAssignmentName}'}  # type: ignore

    def create(
        self,
        scope,  # type: str
        role_assignment_name,  # type: str
        parameters,  # type: "_models.RoleAssignmentCreateParameters"
        **kwargs  # type: Any
    ):
        # type: (...) -> "_models.RoleAssignment"
        """Create a role assignment.

        :param scope: The scope of the role assignment to create. The scope can be any REST resource
         instance. For example, use '/subscriptions/{subscription-id}/' for a subscription,
         '/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}' for a resource group,
         and
         '/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}/providers/{resource-provider}/{resource-type}/{resource-name}'
         for a resource.
        :type scope: str
        :param role_assignment_name: The name of the role assignment to create. It can be any valid
         GUID.
        :type role_assignment_name: str
        :param parameters: Parameters for the role assignment.
        :type parameters: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignmentCreateParameters
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: RoleAssignment, or the result of cls(response)
        :rtype: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignment
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignment"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        content_type = kwargs.pop("content_type", "application/json")
        accept = "application/json"

        # Construct URL
        url = self.create.metadata['url']  # type: ignore
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'roleAssignmentName': self._serialize.url("role_assignment_name", role_assignment_name, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        body_content = self._serialize.body(parameters, 'RoleAssignmentCreateParameters')
        body_content_kwargs['content'] = body_content
        request = self._client.put(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [201]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
            raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

        deserialized = self._deserialize('RoleAssignment', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    create.metadata = {'url': '/{scope}/providers/Microsoft.Authorization/roleAssignments/{roleAssignmentName}'}  # type: ignore

    def get(
        self,
        scope,  # type: str
        role_assignment_name,  # type: str
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> "_models.RoleAssignment"
        """Get the specified role assignment.

        :param scope: The scope of the role assignment.
        :type scope: str
        :param role_assignment_name: The name of the role assignment to get.
        :type role_assignment_name: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: RoleAssignment, or the result of cls(response)
        :rtype: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignment
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignment"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        # Construct URL
        url = self.get.metadata['url']  # type: ignore
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'roleAssignmentName': self._serialize.url("role_assignment_name", role_assignment_name, 'str'),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
        if tenant_id is not None:
            query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        request = self._client.get(url, query_parameters, header_parameters)
        pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
            raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

        deserialized = self._deserialize('RoleAssignment', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    get.metadata = {'url': '/{scope}/providers/Microsoft.Authorization/roleAssignments/{roleAssignmentName}'}  # type: ignore

    def delete_by_id(
        self,
        role_id,  # type: str
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> Optional["_models.RoleAssignment"]
        """Delete a role assignment.

        :param role_id: The ID of the role assignment to delete.
        :type role_id: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: RoleAssignment, or the result of cls(response)
        :rtype: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignment or None
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType[Optional["_models.RoleAssignment"]]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        # Construct URL
        url = self.delete_by_id.metadata['url']  # type: ignore
        path_format_arguments = {
            'roleId': self._serialize.url("role_id", role_id, 'str', skip_quote=True),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
        if tenant_id is not None:
            query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        request = self._client.delete(url, query_parameters, header_parameters)
        pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200, 204]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
            raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

        deserialized = None
        if response.status_code == 200:
            deserialized = self._deserialize('RoleAssignment', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    delete_by_id.metadata = {'url': '/{roleId}'}  # type: ignore

    def create_by_id(
        self,
        role_id,  # type: str
        parameters,  # type: "_models.RoleAssignmentCreateParameters"
        **kwargs  # type: Any
    ):
        # type: (...) -> "_models.RoleAssignment"
        """Creates a role assignment by ID.

        :param role_id: The ID of the role assignment to create.
        :type role_id: str
        :param parameters: Parameters for the role assignment.
        :type parameters: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignmentCreateParameters
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: RoleAssignment, or the result of cls(response)
        :rtype: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignment
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignment"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        content_type = kwargs.pop("content_type", "application/json")
        accept = "application/json"

        # Construct URL
        url = self.create_by_id.metadata['url']  # type: ignore
        path_format_arguments = {
            'roleId': self._serialize.url("role_id", role_id, 'str', skip_quote=True),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Content-Type'] = self._serialize.header("content_type", content_type, 'str')
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        body_content_kwargs = {}  # type: Dict[str, Any]
        body_content = self._serialize.body(parameters, 'RoleAssignmentCreateParameters')
        body_content_kwargs['content'] = body_content
        request = self._client.put(url, query_parameters, header_parameters, **body_content_kwargs)
        pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [201]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
            raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

        deserialized = self._deserialize('RoleAssignment', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    create_by_id.metadata = {'url': '/{roleId}'}  # type: ignore

    def get_by_id(
        self,
        role_id,  # type: str
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> "_models.RoleAssignment"
        """Gets a role assignment by ID.

        :param role_id: The ID of the role assignment to get.
        :type role_id: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: RoleAssignment, or the result of cls(response)
        :rtype: ~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignment
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignment"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        # Construct URL
        url = self.get_by_id.metadata['url']  # type: ignore
        path_format_arguments = {
            'roleId': self._serialize.url("role_id", role_id, 'str', skip_quote=True),
        }
        url = self._client.format_url(url, **path_format_arguments)

        # Construct parameters
        query_parameters = {}  # type: Dict[str, Any]
        query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
        if tenant_id is not None:
            query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

        # Construct headers
        header_parameters = {}  # type: Dict[str, Any]
        header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

        request = self._client.get(url, query_parameters, header_parameters)
        pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
        response = pipeline_response.http_response

        if response.status_code not in [200]:
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
            raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

        deserialized = self._deserialize('RoleAssignment', pipeline_response)

        if cls:
            return cls(pipeline_response, deserialized, {})

        return deserialized
    get_by_id.metadata = {'url': '/{roleId}'}  # type: ignore

    def list(
        self,
        filter=None,  # type: Optional[str]
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> Iterable["_models.RoleAssignmentListResult"]
        """Gets all role assignments for the subscription.

        :param filter: The filter to apply on the operation. Use $filter=atScope() to return all role
         assignments at or above the scope. Use $filter=principalId eq {id} to return all role
         assignments at, above or below the scope for the specified principal.
        :type filter: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either RoleAssignmentListResult or the result of cls(response)
        :rtype: ~azure.core.paging.ItemPaged[~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignmentListResult]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignmentListResult"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.list.metadata['url']  # type: ignore
                path_format_arguments = {
                    'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str', min_length=1),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                if filter is not None:
                    query_parameters['$filter'] = self._serialize.query("filter", filter, 'str')
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
                if tenant_id is not None:
                    query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        def extract_data(pipeline_response):
            deserialized = self._deserialize('RoleAssignmentListResult', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, iter(list_of_elem)

        def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

            return pipeline_response

        return ItemPaged(
            get_next, extract_data
        )
    list.metadata = {'url': '/subscriptions/{subscriptionId}/providers/Microsoft.Authorization/roleAssignments'}  # type: ignore

    def list_for_scope(
        self,
        scope,  # type: str
        filter=None,  # type: Optional[str]
        tenant_id=None,  # type: Optional[str]
        **kwargs  # type: Any
    ):
        # type: (...) -> Iterable["_models.RoleAssignmentListResult"]
        """Gets role assignments for a scope.

        :param scope: The scope of the role assignments.
        :type scope: str
        :param filter: The filter to apply on the operation. Use $filter=atScope() to return all role
         assignments at or above the scope. Use $filter=principalId eq {id} to return all role
         assignments at, above or below the scope for the specified principal.
        :type filter: str
        :param tenant_id: Tenant ID for cross-tenant request.
        :type tenant_id: str
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either RoleAssignmentListResult or the result of cls(response)
        :rtype: ~azure.core.paging.ItemPaged[~azure.mgmt.authorization.v2020_04_01_preview.models.RoleAssignmentListResult]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.RoleAssignmentListResult"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))
        api_version = "2020-04-01-preview"
        accept = "application/json"

        def prepare_request(next_link=None):
            # Construct headers
            header_parameters = {}  # type: Dict[str, Any]
            header_parameters['Accept'] = self._serialize.header("accept", accept, 'str')

            if not next_link:
                # Construct URL
                url = self.list_for_scope.metadata['url']  # type: ignore
                path_format_arguments = {
                    'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
                }
                url = self._client.format_url(url, **path_format_arguments)
                # Construct parameters
                query_parameters = {}  # type: Dict[str, Any]
                if filter is not None:
                    query_parameters['$filter'] = self._serialize.query("filter", filter, 'str')
                query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
                if tenant_id is not None:
                    query_parameters['tenantId'] = self._serialize.query("tenant_id", tenant_id, 'str')

                request = self._client.get(url, query_parameters, header_parameters)
            else:
                url = next_link
                query_parameters = {}  # type: Dict[str, Any]
                request = self._client.get(url, query_parameters, header_parameters)
            return request

        def extract_data(pipeline_response):
            deserialized = self._deserialize('RoleAssignmentListResult', pipeline_response)
            list_of_elem = deserialized.value
            if cls:
                list_of_elem = cls(list_of_elem)
            return deserialized.next_link or None, iter(list_of_elem)

        def get_next(next_link=None):
            request = prepare_request(next_link)

            pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
            response = pipeline_response.http_response

            if response.status_code not in [200]:
                error = self._deserialize.failsafe_deserialize(_models.ErrorResponse, response)
                map_error(status_code=response.status_code, response=response, error_map=error_map)
                raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

            return pipeline_response

        return ItemPaged(
            get_next, extract_data
        )
    list_for_scope.metadata = {'url': '/{scope}/providers/Microsoft.Authorization/roleAssignments'}  # type: ignore
