package eventgrid

// Copyright (c) Microsoft and contributors.  All rights reserved.
//
// 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.
//
// Code generated by Microsoft (R) AutoRest Code Generator.
// Changes may cause incorrect behavior and will be lost if the code is regenerated.

import (
	"context"
	"github.com/Azure/go-autorest/autorest"
	"github.com/Azure/go-autorest/autorest/azure"
	"github.com/Azure/go-autorest/tracing"
	"net/http"
)

// EventSubscriptionsClient is the azure EventGrid Management Client
type EventSubscriptionsClient struct {
	BaseClient
}

// NewEventSubscriptionsClient creates an instance of the EventSubscriptionsClient client.
func NewEventSubscriptionsClient(subscriptionID string) EventSubscriptionsClient {
	return NewEventSubscriptionsClientWithBaseURI(DefaultBaseURI, subscriptionID)
}

// NewEventSubscriptionsClientWithBaseURI creates an instance of the EventSubscriptionsClient client using a custom
// endpoint.  Use this when interacting with an Azure cloud that uses a non-standard base URI (sovereign clouds, Azure
// stack).
func NewEventSubscriptionsClientWithBaseURI(baseURI string, subscriptionID string) EventSubscriptionsClient {
	return EventSubscriptionsClient{NewWithBaseURI(baseURI, subscriptionID)}
}

// Create 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.
// Parameters:
// 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.
// eventSubscriptionName - 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.
// eventSubscriptionInfo - event subscription properties containing the destination and filter information
func (client EventSubscriptionsClient) Create(ctx context.Context, scope string, eventSubscriptionName string, eventSubscriptionInfo EventSubscription) (result EventSubscriptionsCreateFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.Create")
		defer func() {
			sc := -1
			if result.Response() != nil {
				sc = result.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.CreatePreparer(ctx, scope, eventSubscriptionName, eventSubscriptionInfo)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Create", nil, "Failure preparing request")
		return
	}

	result, err = client.CreateSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Create", result.Response(), "Failure sending request")
		return
	}

	return
}

// CreatePreparer prepares the Create request.
func (client EventSubscriptionsClient) CreatePreparer(ctx context.Context, scope string, eventSubscriptionName string, eventSubscriptionInfo EventSubscription) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"eventSubscriptionName": autorest.Encode("path", eventSubscriptionName),
		"scope":                 scope,
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPut(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}", pathParameters),
		autorest.WithJSON(eventSubscriptionInfo),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// CreateSender sends the Create request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) CreateSender(req *http.Request) (future EventSubscriptionsCreateFuture, err error) {
	var resp *http.Response
	resp, err = client.Send(req, autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
	if err != nil {
		return
	}
	future.Future, err = azure.NewFutureFromResponse(resp)
	return
}

// CreateResponder handles the response to the Create request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) CreateResponder(resp *http.Response) (result EventSubscription, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusCreated),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Delete delete an existing event subscription
// Parameters:
// 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.
// eventSubscriptionName - name of the event subscription
func (client EventSubscriptionsClient) Delete(ctx context.Context, scope string, eventSubscriptionName string) (result EventSubscriptionsDeleteFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.Delete")
		defer func() {
			sc := -1
			if result.Response() != nil {
				sc = result.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.DeletePreparer(ctx, scope, eventSubscriptionName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Delete", nil, "Failure preparing request")
		return
	}

	result, err = client.DeleteSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Delete", result.Response(), "Failure sending request")
		return
	}

	return
}

// DeletePreparer prepares the Delete request.
func (client EventSubscriptionsClient) DeletePreparer(ctx context.Context, scope string, eventSubscriptionName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"eventSubscriptionName": autorest.Encode("path", eventSubscriptionName),
		"scope":                 scope,
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsDelete(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// DeleteSender sends the Delete request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) DeleteSender(req *http.Request) (future EventSubscriptionsDeleteFuture, err error) {
	var resp *http.Response
	resp, err = client.Send(req, autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
	if err != nil {
		return
	}
	future.Future, err = azure.NewFutureFromResponse(resp)
	return
}

// DeleteResponder handles the response to the Delete request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) DeleteResponder(resp *http.Response) (result autorest.Response, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted, http.StatusNoContent),
		autorest.ByClosing())
	result.Response = resp
	return
}

// Get get properties of an event subscription
// Parameters:
// 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.
// eventSubscriptionName - name of the event subscription
func (client EventSubscriptionsClient) Get(ctx context.Context, scope string, eventSubscriptionName string) (result EventSubscription, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.Get")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.GetPreparer(ctx, scope, eventSubscriptionName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Get", nil, "Failure preparing request")
		return
	}

	resp, err := client.GetSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Get", resp, "Failure sending request")
		return
	}

	result, err = client.GetResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Get", resp, "Failure responding to request")
	}

	return
}

// GetPreparer prepares the Get request.
func (client EventSubscriptionsClient) GetPreparer(ctx context.Context, scope string, eventSubscriptionName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"eventSubscriptionName": autorest.Encode("path", eventSubscriptionName),
		"scope":                 scope,
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// GetSender sends the Get request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) GetSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
}

// GetResponder handles the response to the Get request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) GetResponder(resp *http.Response) (result EventSubscription, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// GetFullURL get the full endpoint URL for an event subscription
// Parameters:
// 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.
// eventSubscriptionName - name of the event subscription
func (client EventSubscriptionsClient) GetFullURL(ctx context.Context, scope string, eventSubscriptionName string) (result EventSubscriptionFullURL, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.GetFullURL")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.GetFullURLPreparer(ctx, scope, eventSubscriptionName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "GetFullURL", nil, "Failure preparing request")
		return
	}

	resp, err := client.GetFullURLSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "GetFullURL", resp, "Failure sending request")
		return
	}

	result, err = client.GetFullURLResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "GetFullURL", resp, "Failure responding to request")
	}

	return
}

// GetFullURLPreparer prepares the GetFullURL request.
func (client EventSubscriptionsClient) GetFullURLPreparer(ctx context.Context, scope string, eventSubscriptionName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"eventSubscriptionName": autorest.Encode("path", eventSubscriptionName),
		"scope":                 scope,
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}/getFullUrl", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// GetFullURLSender sends the GetFullURL request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) GetFullURLSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
}

// GetFullURLResponder handles the response to the GetFullURL request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) GetFullURLResponder(resp *http.Response) (result EventSubscriptionFullURL, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListByResource list all event subscriptions that have been created for a specific topic
// Parameters:
// resourceGroupName - the name of the resource group within the user's subscription.
// providerNamespace - namespace of the provider of the topic
// resourceTypeName - name of the resource type
// resourceName - name of the resource
func (client EventSubscriptionsClient) ListByResource(ctx context.Context, resourceGroupName string, providerNamespace string, resourceTypeName string, resourceName string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListByResource")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListByResourcePreparer(ctx, resourceGroupName, providerNamespace, resourceTypeName, resourceName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListByResource", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListByResourceSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListByResource", resp, "Failure sending request")
		return
	}

	result, err = client.ListByResourceResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListByResource", resp, "Failure responding to request")
	}

	return
}

// ListByResourcePreparer prepares the ListByResource request.
func (client EventSubscriptionsClient) ListByResourcePreparer(ctx context.Context, resourceGroupName string, providerNamespace string, resourceTypeName string, resourceName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"providerNamespace": autorest.Encode("path", providerNamespace),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"resourceName":      autorest.Encode("path", resourceName),
		"resourceTypeName":  autorest.Encode("path", resourceTypeName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{providerNamespace}/{resourceTypeName}/{resourceName}/providers/Microsoft.EventGrid/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListByResourceSender sends the ListByResource request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListByResourceSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListByResourceResponder handles the response to the ListByResource request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListByResourceResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListGlobalByResourceGroup list all global event subscriptions under a specific Azure subscription and resource group
// Parameters:
// resourceGroupName - the name of the resource group within the user's subscription.
func (client EventSubscriptionsClient) ListGlobalByResourceGroup(ctx context.Context, resourceGroupName string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListGlobalByResourceGroup")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListGlobalByResourceGroupPreparer(ctx, resourceGroupName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalByResourceGroup", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListGlobalByResourceGroupSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalByResourceGroup", resp, "Failure sending request")
		return
	}

	result, err = client.ListGlobalByResourceGroupResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalByResourceGroup", resp, "Failure responding to request")
	}

	return
}

// ListGlobalByResourceGroupPreparer prepares the ListGlobalByResourceGroup request.
func (client EventSubscriptionsClient) ListGlobalByResourceGroupPreparer(ctx context.Context, resourceGroupName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListGlobalByResourceGroupSender sends the ListGlobalByResourceGroup request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListGlobalByResourceGroupSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListGlobalByResourceGroupResponder handles the response to the ListGlobalByResourceGroup request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListGlobalByResourceGroupResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListGlobalByResourceGroupForTopicType list all global event subscriptions under a resource group for a specific
// topic type.
// Parameters:
// resourceGroupName - the name of the resource group within the user's subscription.
// topicTypeName - name of the topic type
func (client EventSubscriptionsClient) ListGlobalByResourceGroupForTopicType(ctx context.Context, resourceGroupName string, topicTypeName string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListGlobalByResourceGroupForTopicType")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListGlobalByResourceGroupForTopicTypePreparer(ctx, resourceGroupName, topicTypeName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalByResourceGroupForTopicType", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListGlobalByResourceGroupForTopicTypeSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalByResourceGroupForTopicType", resp, "Failure sending request")
		return
	}

	result, err = client.ListGlobalByResourceGroupForTopicTypeResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalByResourceGroupForTopicType", resp, "Failure responding to request")
	}

	return
}

// ListGlobalByResourceGroupForTopicTypePreparer prepares the ListGlobalByResourceGroupForTopicType request.
func (client EventSubscriptionsClient) ListGlobalByResourceGroupForTopicTypePreparer(ctx context.Context, resourceGroupName string, topicTypeName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"topicTypeName":     autorest.Encode("path", topicTypeName),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/topicTypes/{topicTypeName}/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListGlobalByResourceGroupForTopicTypeSender sends the ListGlobalByResourceGroupForTopicType request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListGlobalByResourceGroupForTopicTypeSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListGlobalByResourceGroupForTopicTypeResponder handles the response to the ListGlobalByResourceGroupForTopicType request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListGlobalByResourceGroupForTopicTypeResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListGlobalBySubscription list all aggregated global event subscriptions under a specific Azure subscription
func (client EventSubscriptionsClient) ListGlobalBySubscription(ctx context.Context) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListGlobalBySubscription")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListGlobalBySubscriptionPreparer(ctx)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalBySubscription", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListGlobalBySubscriptionSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalBySubscription", resp, "Failure sending request")
		return
	}

	result, err = client.ListGlobalBySubscriptionResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalBySubscription", resp, "Failure responding to request")
	}

	return
}

// ListGlobalBySubscriptionPreparer prepares the ListGlobalBySubscription request.
func (client EventSubscriptionsClient) ListGlobalBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.EventGrid/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListGlobalBySubscriptionSender sends the ListGlobalBySubscription request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListGlobalBySubscriptionSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListGlobalBySubscriptionResponder handles the response to the ListGlobalBySubscription request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListGlobalBySubscriptionResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListGlobalBySubscriptionForTopicType list all global event subscriptions under an Azure subscription for a topic
// type.
// Parameters:
// topicTypeName - name of the topic type
func (client EventSubscriptionsClient) ListGlobalBySubscriptionForTopicType(ctx context.Context, topicTypeName string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListGlobalBySubscriptionForTopicType")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListGlobalBySubscriptionForTopicTypePreparer(ctx, topicTypeName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalBySubscriptionForTopicType", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListGlobalBySubscriptionForTopicTypeSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalBySubscriptionForTopicType", resp, "Failure sending request")
		return
	}

	result, err = client.ListGlobalBySubscriptionForTopicTypeResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListGlobalBySubscriptionForTopicType", resp, "Failure responding to request")
	}

	return
}

// ListGlobalBySubscriptionForTopicTypePreparer prepares the ListGlobalBySubscriptionForTopicType request.
func (client EventSubscriptionsClient) ListGlobalBySubscriptionForTopicTypePreparer(ctx context.Context, topicTypeName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
		"topicTypeName":  autorest.Encode("path", topicTypeName),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.EventGrid/topicTypes/{topicTypeName}/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListGlobalBySubscriptionForTopicTypeSender sends the ListGlobalBySubscriptionForTopicType request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListGlobalBySubscriptionForTopicTypeSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListGlobalBySubscriptionForTopicTypeResponder handles the response to the ListGlobalBySubscriptionForTopicType request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListGlobalBySubscriptionForTopicTypeResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListRegionalByResourceGroup list all event subscriptions from the given location under a specific Azure subscription
// and resource group
// Parameters:
// resourceGroupName - the name of the resource group within the user's subscription.
// location - name of the location
func (client EventSubscriptionsClient) ListRegionalByResourceGroup(ctx context.Context, resourceGroupName string, location string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListRegionalByResourceGroup")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListRegionalByResourceGroupPreparer(ctx, resourceGroupName, location)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalByResourceGroup", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListRegionalByResourceGroupSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalByResourceGroup", resp, "Failure sending request")
		return
	}

	result, err = client.ListRegionalByResourceGroupResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalByResourceGroup", resp, "Failure responding to request")
	}

	return
}

// ListRegionalByResourceGroupPreparer prepares the ListRegionalByResourceGroup request.
func (client EventSubscriptionsClient) ListRegionalByResourceGroupPreparer(ctx context.Context, resourceGroupName string, location string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"location":          autorest.Encode("path", location),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/locations/{location}/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListRegionalByResourceGroupSender sends the ListRegionalByResourceGroup request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListRegionalByResourceGroupSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListRegionalByResourceGroupResponder handles the response to the ListRegionalByResourceGroup request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListRegionalByResourceGroupResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListRegionalByResourceGroupForTopicType list all event subscriptions from the given location under a specific Azure
// subscription and resource group and topic type
// Parameters:
// resourceGroupName - the name of the resource group within the user's subscription.
// location - name of the location
// topicTypeName - name of the topic type
func (client EventSubscriptionsClient) ListRegionalByResourceGroupForTopicType(ctx context.Context, resourceGroupName string, location string, topicTypeName string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListRegionalByResourceGroupForTopicType")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListRegionalByResourceGroupForTopicTypePreparer(ctx, resourceGroupName, location, topicTypeName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalByResourceGroupForTopicType", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListRegionalByResourceGroupForTopicTypeSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalByResourceGroupForTopicType", resp, "Failure sending request")
		return
	}

	result, err = client.ListRegionalByResourceGroupForTopicTypeResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalByResourceGroupForTopicType", resp, "Failure responding to request")
	}

	return
}

// ListRegionalByResourceGroupForTopicTypePreparer prepares the ListRegionalByResourceGroupForTopicType request.
func (client EventSubscriptionsClient) ListRegionalByResourceGroupForTopicTypePreparer(ctx context.Context, resourceGroupName string, location string, topicTypeName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"location":          autorest.Encode("path", location),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"topicTypeName":     autorest.Encode("path", topicTypeName),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.EventGrid/locations/{location}/topicTypes/{topicTypeName}/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListRegionalByResourceGroupForTopicTypeSender sends the ListRegionalByResourceGroupForTopicType request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListRegionalByResourceGroupForTopicTypeSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListRegionalByResourceGroupForTopicTypeResponder handles the response to the ListRegionalByResourceGroupForTopicType request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListRegionalByResourceGroupForTopicTypeResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListRegionalBySubscription list all event subscriptions from the given location under a specific Azure subscription
// Parameters:
// location - name of the location
func (client EventSubscriptionsClient) ListRegionalBySubscription(ctx context.Context, location string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListRegionalBySubscription")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListRegionalBySubscriptionPreparer(ctx, location)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalBySubscription", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListRegionalBySubscriptionSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalBySubscription", resp, "Failure sending request")
		return
	}

	result, err = client.ListRegionalBySubscriptionResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalBySubscription", resp, "Failure responding to request")
	}

	return
}

// ListRegionalBySubscriptionPreparer prepares the ListRegionalBySubscription request.
func (client EventSubscriptionsClient) ListRegionalBySubscriptionPreparer(ctx context.Context, location string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"location":       autorest.Encode("path", location),
		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.EventGrid/locations/{location}/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListRegionalBySubscriptionSender sends the ListRegionalBySubscription request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListRegionalBySubscriptionSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListRegionalBySubscriptionResponder handles the response to the ListRegionalBySubscription request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListRegionalBySubscriptionResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListRegionalBySubscriptionForTopicType list all event subscriptions from the given location under a specific Azure
// subscription and topic type.
// Parameters:
// location - name of the location
// topicTypeName - name of the topic type
func (client EventSubscriptionsClient) ListRegionalBySubscriptionForTopicType(ctx context.Context, location string, topicTypeName string) (result EventSubscriptionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.ListRegionalBySubscriptionForTopicType")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListRegionalBySubscriptionForTopicTypePreparer(ctx, location, topicTypeName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalBySubscriptionForTopicType", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListRegionalBySubscriptionForTopicTypeSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalBySubscriptionForTopicType", resp, "Failure sending request")
		return
	}

	result, err = client.ListRegionalBySubscriptionForTopicTypeResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "ListRegionalBySubscriptionForTopicType", resp, "Failure responding to request")
	}

	return
}

// ListRegionalBySubscriptionForTopicTypePreparer prepares the ListRegionalBySubscriptionForTopicType request.
func (client EventSubscriptionsClient) ListRegionalBySubscriptionForTopicTypePreparer(ctx context.Context, location string, topicTypeName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"location":       autorest.Encode("path", location),
		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
		"topicTypeName":  autorest.Encode("path", topicTypeName),
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.EventGrid/locations/{location}/topicTypes/{topicTypeName}/eventSubscriptions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListRegionalBySubscriptionForTopicTypeSender sends the ListRegionalBySubscriptionForTopicType request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) ListRegionalBySubscriptionForTopicTypeSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListRegionalBySubscriptionForTopicTypeResponder handles the response to the ListRegionalBySubscriptionForTopicType request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) ListRegionalBySubscriptionForTopicTypeResponder(resp *http.Response) (result EventSubscriptionsListResult, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Update asynchronously updates an existing event subscription.
// Parameters:
// 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.
// eventSubscriptionName - name of the event subscription to be created
// eventSubscriptionUpdateParameters - updated event subscription information
func (client EventSubscriptionsClient) Update(ctx context.Context, scope string, eventSubscriptionName string, eventSubscriptionUpdateParameters EventSubscriptionUpdateParameters) (result EventSubscriptionsUpdateFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/EventSubscriptionsClient.Update")
		defer func() {
			sc := -1
			if result.Response() != nil {
				sc = result.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.UpdatePreparer(ctx, scope, eventSubscriptionName, eventSubscriptionUpdateParameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Update", nil, "Failure preparing request")
		return
	}

	result, err = client.UpdateSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "eventgrid.EventSubscriptionsClient", "Update", result.Response(), "Failure sending request")
		return
	}

	return
}

// UpdatePreparer prepares the Update request.
func (client EventSubscriptionsClient) UpdatePreparer(ctx context.Context, scope string, eventSubscriptionName string, eventSubscriptionUpdateParameters EventSubscriptionUpdateParameters) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"eventSubscriptionName": autorest.Encode("path", eventSubscriptionName),
		"scope":                 scope,
	}

	const APIVersion = "2017-09-15-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPatch(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/{scope}/providers/Microsoft.EventGrid/eventSubscriptions/{eventSubscriptionName}", pathParameters),
		autorest.WithJSON(eventSubscriptionUpdateParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// UpdateSender sends the Update request. The method will close the
// http.Response Body if it receives an error.
func (client EventSubscriptionsClient) UpdateSender(req *http.Request) (future EventSubscriptionsUpdateFuture, err error) {
	var resp *http.Response
	resp, err = client.Send(req, autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
	if err != nil {
		return
	}
	future.Future, err = azure.NewFutureFromResponse(resp)
	return
}

// UpdateResponder handles the response to the Update request. The method always
// closes the http.Response Body.
func (client EventSubscriptionsClient) UpdateResponder(resp *http.Response) (result EventSubscription, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusCreated),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}
