# --------------------------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.
# --------------------------------------------------------------------------------------------

# pylint: skip-file
# coding=utf-8

# --------------------------------------------------------------------------
# Code generated by Microsoft (R) AutoRest Code Generator 1.2.2.0
# Changes may cause incorrect behavior and will be lost if the code is
# regenerated.
# --------------------------------------------------------------------------

import uuid
from msrest.pipeline import ClientRawResponse
from msrestazure.azure_exceptions import CloudError
from msrestazure.azure_operation import AzureOperationPoller

from .. import models


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

    :param client: Client for service requests.
    :param config: Configuration of service client.
    :param serializer: An object model serializer.
    :param deserializer: An objec model deserializer.
    :ivar api_version: Version of the API to be used with the client request. Constant value: "2017-06-15-preview".
    """

    def __init__(self, client, config, serializer, deserializer):

        self._client = client
        self._serialize = serializer
        self._deserialize = deserializer
        self.api_version = "2017-06-15-preview"

        self.config = config

    def get(
            self, scope, event_subscription_name, custom_headers=None, raw=False, **operation_config):
        """Get an event subscription.

        Get properties of an event subscription.

        :param scope: The scope of the event subscription. The scope can be a
         subscription, or a resource group, or a top level resource belonging
         to a resource provider namespace, or an EventGrid topic. For example,
         use '/subscriptions/{subscriptionId}/' for a subscription,
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}'
         for a resource group, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}'
         for a resource, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/topics/{topicName}'
         for an EventGrid topic.
        :type scope: str
        :param event_subscription_name: Name of the event subscription
        :type event_subscription_name: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>` or
         :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>` if
         raw=true
        :rtype: :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>` or
         :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        # Construct URL
        url = '/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}'
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'eventSubscriptionName': self._serialize.url("event_subscription_name", event_subscription_name, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

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

        # Construct headers
        header_parameters = {}
        header_parameters['Content-Type'] = 'application/json; charset=utf-8'
        if self.config.generate_client_request_id:
            header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
        if custom_headers:
            header_parameters.update(custom_headers)
        if self.config.accept_language is not None:
            header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

        # Construct and send request
        request = self._client.get(url, query_parameters)
        response = self._client.send(request, header_parameters, **operation_config)

        if response.status_code not in [200]:
            exp = CloudError(response)
            exp.request_id = response.headers.get('x-ms-request-id')
            raise exp

        deserialized = None

        if response.status_code == 200:
            deserialized = self._deserialize('EventSubscription', response)

        if raw:
            client_raw_response = ClientRawResponse(deserialized, response)
            return client_raw_response

        return deserialized

    def create(
            self, scope, event_subscription_name, event_subscription_info, custom_headers=None, raw=False, **operation_config):
        """Create an event subscription.

        Asynchronously creates a new event subscription to the specified scope.
        Existing event subscriptions cannot be updated with this API and should
        instead use the Update event subscription API.

        :param scope: The scope of the resource to which the event
         subscription needs to be created. The scope can be a subscription, or
         a resource group, or a top level resource belonging to a resource
         provider namespace, or an EventGrid topic. For example, use
         '/subscriptions/{subscriptionId}/' for a subscription,
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}'
         for a resource group, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}'
         for a resource, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/topics/{topicName}'
         for an EventGrid topic.
        :type scope: str
        :param event_subscription_name: Name of the event subscription to be
         created. Event subscription names must be between 3 and 64 characters
         in length and use alphanumeric letters only.
        :type event_subscription_name: str
        :param event_subscription_info: Event subscription properties
         containing the destination and filter information
        :type event_subscription_info: :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>`
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :return:
         :class:`AzureOperationPoller<msrestazure.azure_operation.AzureOperationPoller>`
         instance that returns :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>` or
         :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>` if
         raw=true
        :rtype:
         :class:`AzureOperationPoller<msrestazure.azure_operation.AzureOperationPoller>`
         or :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        # Construct URL
        url = '/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}'
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'eventSubscriptionName': self._serialize.url("event_subscription_name", event_subscription_name, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

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

        # Construct headers
        header_parameters = {}
        header_parameters['Content-Type'] = 'application/json; charset=utf-8'
        if self.config.generate_client_request_id:
            header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
        if custom_headers:
            header_parameters.update(custom_headers)
        if self.config.accept_language is not None:
            header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

        # Construct body
        body_content = self._serialize.body(event_subscription_info, 'EventSubscription')

        # Construct and send request
        def long_running_send():

            request = self._client.put(url, query_parameters)
            return self._client.send(
                request, header_parameters, body_content, **operation_config)

        def get_long_running_status(status_link, headers=None):

            request = self._client.get(status_link)
            if headers:
                request.headers.update(headers)
            return self._client.send(
                request, header_parameters, **operation_config)

        def get_long_running_output(response):

            if response.status_code not in [201]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            deserialized = None

            if response.status_code == 201:
                deserialized = self._deserialize('EventSubscription', response)

            if raw:
                client_raw_response = ClientRawResponse(deserialized, response)
                return client_raw_response

            return deserialized

        if raw:
            response = long_running_send()
            return get_long_running_output(response)

        long_running_operation_timeout = operation_config.get(
            'long_running_operation_timeout',
            self.config.long_running_operation_timeout)
        return AzureOperationPoller(
            long_running_send, get_long_running_output,
            get_long_running_status, long_running_operation_timeout)

    def delete(
            self, scope, event_subscription_name, custom_headers=None, raw=False, **operation_config):
        """Delete an event subscription.

        Delete an existing event subscription.

        :param scope: The scope of the event subscription. The scope can be a
         subscription, or a resource group, or a top level resource belonging
         to a resource provider namespace, or an EventGrid topic. For example,
         use '/subscriptions/{subscriptionId}/' for a subscription,
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}'
         for a resource group, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}'
         for a resource, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/topics/{topicName}'
         for an EventGrid topic.
        :type scope: str
        :param event_subscription_name: Name of the event subscription
        :type event_subscription_name: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :return:
         :class:`AzureOperationPoller<msrestazure.azure_operation.AzureOperationPoller>`
         instance that returns None or
         :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>` if
         raw=true
        :rtype:
         :class:`AzureOperationPoller<msrestazure.azure_operation.AzureOperationPoller>`
         or :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        # Construct URL
        url = '/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}'
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'eventSubscriptionName': self._serialize.url("event_subscription_name", event_subscription_name, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

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

        # Construct headers
        header_parameters = {}
        header_parameters['Content-Type'] = 'application/json; charset=utf-8'
        if self.config.generate_client_request_id:
            header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
        if custom_headers:
            header_parameters.update(custom_headers)
        if self.config.accept_language is not None:
            header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

        # Construct and send request
        def long_running_send():

            request = self._client.delete(url, query_parameters)
            return self._client.send(request, header_parameters, **operation_config)

        def get_long_running_status(status_link, headers=None):

            request = self._client.get(status_link)
            if headers:
                request.headers.update(headers)
            return self._client.send(
                request, header_parameters, **operation_config)

        def get_long_running_output(response):

            if response.status_code not in [202, 204]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            if raw:
                client_raw_response = ClientRawResponse(None, response)
                return client_raw_response

        if raw:
            response = long_running_send()
            return get_long_running_output(response)

        long_running_operation_timeout = operation_config.get(
            'long_running_operation_timeout',
            self.config.long_running_operation_timeout)
        return AzureOperationPoller(
            long_running_send, get_long_running_output,
            get_long_running_status, long_running_operation_timeout)

    def update(
            self, scope, event_subscription_name, event_subscription_update_parameters, custom_headers=None, raw=False, **operation_config):
        """Update an event subscription.

        Asynchronously updates an existing event subscription.

        :param scope: The scope of existing event subscription. The scope can
         be a subscription, or a resource group, or a top level resource
         belonging to a resource provider namespace, or an EventGrid topic. For
         example, use '/subscriptions/{subscriptionId}/' for a subscription,
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}'
         for a resource group, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}'
         for a resource, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/topics/{topicName}'
         for an EventGrid topic.
        :type scope: str
        :param event_subscription_name: Name of the event subscription to be
         created
        :type event_subscription_name: str
        :param event_subscription_update_parameters: Updated event
         subscription information
        :type event_subscription_update_parameters:
         :class:`EventSubscriptionUpdateParameters
         <azure.mgmt.eventgrid.models.EventSubscriptionUpdateParameters>`
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :return:
         :class:`AzureOperationPoller<msrestazure.azure_operation.AzureOperationPoller>`
         instance that returns :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>` or
         :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>` if
         raw=true
        :rtype:
         :class:`AzureOperationPoller<msrestazure.azure_operation.AzureOperationPoller>`
         or :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        # Construct URL
        url = '/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}'
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'eventSubscriptionName': self._serialize.url("event_subscription_name", event_subscription_name, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

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

        # Construct headers
        header_parameters = {}
        header_parameters['Content-Type'] = 'application/json; charset=utf-8'
        if self.config.generate_client_request_id:
            header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
        if custom_headers:
            header_parameters.update(custom_headers)
        if self.config.accept_language is not None:
            header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

        # Construct body
        body_content = self._serialize.body(event_subscription_update_parameters, 'EventSubscriptionUpdateParameters')

        # Construct and send request
        def long_running_send():

            request = self._client.patch(url, query_parameters)
            return self._client.send(
                request, header_parameters, body_content, **operation_config)

        def get_long_running_status(status_link, headers=None):

            request = self._client.get(status_link)
            if headers:
                request.headers.update(headers)
            return self._client.send(
                request, header_parameters, **operation_config)

        def get_long_running_output(response):

            if response.status_code not in [201]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            deserialized = None

            if response.status_code == 201:
                deserialized = self._deserialize('EventSubscription', response)

            if raw:
                client_raw_response = ClientRawResponse(deserialized, response)
                return client_raw_response

            return deserialized

        if raw:
            response = long_running_send()
            return get_long_running_output(response)

        long_running_operation_timeout = operation_config.get(
            'long_running_operation_timeout',
            self.config.long_running_operation_timeout)
        return AzureOperationPoller(
            long_running_send, get_long_running_output,
            get_long_running_status, long_running_operation_timeout)

    def get_full_url(
            self, scope, event_subscription_name, custom_headers=None, raw=False, **operation_config):
        """Get full URL of an event subscription.

        Get the full endpoint URL for an event subscription.

        :param scope: The scope of the event subscription. The scope can be a
         subscription, or a resource group, or a top level resource belonging
         to a resource provider namespace, or an EventGrid topic. For example,
         use '/subscriptions/{subscriptionId}/' for a subscription,
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}'
         for a resource group, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}'
         for a resource, and
         '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/topics/{topicName}'
         for an EventGrid topic.
        :type scope: str
        :param event_subscription_name: Name of the event subscription
        :type event_subscription_name: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: :class:`EventSubscriptionFullUrl
         <azure.mgmt.eventgrid.models.EventSubscriptionFullUrl>` or
         :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>` if
         raw=true
        :rtype: :class:`EventSubscriptionFullUrl
         <azure.mgmt.eventgrid.models.EventSubscriptionFullUrl>` or
         :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        # Construct URL
        url = '/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}/getFullUrl'
        path_format_arguments = {
            'scope': self._serialize.url("scope", scope, 'str', skip_quote=True),
            'eventSubscriptionName': self._serialize.url("event_subscription_name", event_subscription_name, 'str')
        }
        url = self._client.format_url(url, **path_format_arguments)

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

        # Construct headers
        header_parameters = {}
        header_parameters['Content-Type'] = 'application/json; charset=utf-8'
        if self.config.generate_client_request_id:
            header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
        if custom_headers:
            header_parameters.update(custom_headers)
        if self.config.accept_language is not None:
            header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

        # Construct and send request
        request = self._client.post(url, query_parameters)
        response = self._client.send(request, header_parameters, **operation_config)

        if response.status_code not in [200]:
            exp = CloudError(response)
            exp.request_id = response.headers.get('x-ms-request-id')
            raise exp

        deserialized = None

        if response.status_code == 200:
            deserialized = self._deserialize('EventSubscriptionFullUrl', response)

        if raw:
            client_raw_response = ClientRawResponse(deserialized, response)
            return client_raw_response

        return deserialized

    def list_global_by_subscription(
            self, custom_headers=None, raw=False, **operation_config):
        """Get an aggregated list of all global event subscriptions under an Azure
        subscription.

        List all aggregated global event subscriptions under a specific Azure
        subscription.

        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: An iterator like instance of :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>`
        :rtype: :class:`EventSubscriptionPaged
         <azure.mgmt.eventgrid.models.EventSubscriptionPaged>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        def internal_paging(next_link=None, raw=False):

            if not next_link:
                # Construct URL
                url = '/subscriptions/{subscriptionId}/providers/Microsoft.EventGrid/eventSubscriptions'
                path_format_arguments = {
                    'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str')
                }
                url = self._client.format_url(url, **path_format_arguments)

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

            else:
                url = next_link
                query_parameters = {}

            # Construct headers
            header_parameters = {}
            header_parameters['Content-Type'] = 'application/json; charset=utf-8'
            if self.config.generate_client_request_id:
                header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
            if custom_headers:
                header_parameters.update(custom_headers)
            if self.config.accept_language is not None:
                header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

            # Construct and send request
            request = self._client.get(url, query_parameters)
            response = self._client.send(
                request, header_parameters, **operation_config)

            if response.status_code not in [200]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            return response

        # Deserialize response
        deserialized = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies)

        if raw:
            header_dict = {}
            client_raw_response = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies, header_dict)
            return client_raw_response

        return deserialized

    def list_global_by_subscription_for_topic_type(
            self, topic_type_name, custom_headers=None, raw=False, **operation_config):
        """List all global event subscriptions for a topic type.

        List all global event subscriptions under an Azure subscription for a
        topic type.

        :param topic_type_name: Name of the topic type
        :type topic_type_name: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: An iterator like instance of :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>`
        :rtype: :class:`EventSubscriptionPaged
         <azure.mgmt.eventgrid.models.EventSubscriptionPaged>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        def internal_paging(next_link=None, raw=False):

            if not next_link:
                # Construct URL
                url = '/subscriptions/{subscriptionId}/providers/Microsoft.EventGrid/topicTypes/{topicTypeName}/eventSubscriptions'
                path_format_arguments = {
                    'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str'),
                    'topicTypeName': self._serialize.url("topic_type_name", topic_type_name, 'str')
                }
                url = self._client.format_url(url, **path_format_arguments)

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

            else:
                url = next_link
                query_parameters = {}

            # Construct headers
            header_parameters = {}
            header_parameters['Content-Type'] = 'application/json; charset=utf-8'
            if self.config.generate_client_request_id:
                header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
            if custom_headers:
                header_parameters.update(custom_headers)
            if self.config.accept_language is not None:
                header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

            # Construct and send request
            request = self._client.get(url, query_parameters)
            response = self._client.send(
                request, header_parameters, **operation_config)

            if response.status_code not in [200]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            return response

        # Deserialize response
        deserialized = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies)

        if raw:
            header_dict = {}
            client_raw_response = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies, header_dict)
            return client_raw_response

        return deserialized

    def list_global_by_resource_group(
            self, resource_group_name, custom_headers=None, raw=False, **operation_config):
        """List all global event subscriptions under an Azure subscription and
        resource group.

        List all global event subscriptions under a specific Azure subscription
        and resource group.

        :param resource_group_name: The name of the resource group within the
         user's subscription.
        :type resource_group_name: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: An iterator like instance of :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>`
        :rtype: :class:`EventSubscriptionPaged
         <azure.mgmt.eventgrid.models.EventSubscriptionPaged>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        def internal_paging(next_link=None, raw=False):

            if not next_link:
                # Construct URL
                url = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/eventSubscriptions'
                path_format_arguments = {
                    'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str'),
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str')
                }
                url = self._client.format_url(url, **path_format_arguments)

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

            else:
                url = next_link
                query_parameters = {}

            # Construct headers
            header_parameters = {}
            header_parameters['Content-Type'] = 'application/json; charset=utf-8'
            if self.config.generate_client_request_id:
                header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
            if custom_headers:
                header_parameters.update(custom_headers)
            if self.config.accept_language is not None:
                header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

            # Construct and send request
            request = self._client.get(url, query_parameters)
            response = self._client.send(
                request, header_parameters, **operation_config)

            if response.status_code not in [200]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            return response

        # Deserialize response
        deserialized = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies)

        if raw:
            header_dict = {}
            client_raw_response = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies, header_dict)
            return client_raw_response

        return deserialized

    def list_global_by_resource_group_for_topic_type(
            self, resource_group_name, topic_type_name, custom_headers=None, raw=False, **operation_config):
        """List all global event subscriptions under a resource group for a topic
        type.

        List all global event subscriptions under a resource group for a
        specific topic type.

        :param resource_group_name: The name of the resource group within the
         user's subscription.
        :type resource_group_name: str
        :param topic_type_name: Name of the topic type
        :type topic_type_name: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: An iterator like instance of :class:`EventSubscription
         <azure.mgmt.eventgrid.models.EventSubscription>`
        :rtype: :class:`EventSubscriptionPaged
         <azure.mgmt.eventgrid.models.EventSubscriptionPaged>`
        :raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`
        """
        def internal_paging(next_link=None, raw=False):

            if not next_link:
                # Construct URL
                url = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/topicTypes/{topicTypeName}/eventSubscriptions'
                path_format_arguments = {
                    'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str'),
                    'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
                    'topicTypeName': self._serialize.url("topic_type_name", topic_type_name, 'str')
                }
                url = self._client.format_url(url, **path_format_arguments)

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

            else:
                url = next_link
                query_parameters = {}

            # Construct headers
            header_parameters = {}
            header_parameters['Content-Type'] = 'application/json; charset=utf-8'
            if self.config.generate_client_request_id:
                header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
            if custom_headers:
                header_parameters.update(custom_headers)
            if self.config.accept_language is not None:
                header_parameters['accept-language'] = self._serialize.header("self.config.accept_language", self.config.accept_language, 'str')

            # Construct and send request
            request = self._client.get(url, query_parameters)
            response = self._client.send(
                request, header_parameters, **operation_config)

            if response.status_code not in [200]:
                exp = CloudError(response)
                exp.request_id = response.headers.get('x-ms-request-id')
                raise exp

            return response

        # Deserialize response
        deserialized = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies)

        if raw:
            header_dict = {}
            client_raw_response = models.EventSubscriptionPaged(internal_paging, self._deserialize.dependencies, header_dict)
            return client_raw_response

        return deserialized

    def list_regional_by_subscription(
            self, location, custom_headers=None, raw=False, **operation_config):
        """List all regional event subscriptions under an Azure subscription.

        List all event subscriptions from the given location under a specific
        Azure subscription.