instancepools.go

package sql

// 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/autorest/validation"
	"github.com/Azure/go-autorest/tracing"
	"net/http"
)

// InstancePoolsClient is the the Azure SQL Database management API provides a RESTful set of web services that
// interact with Azure SQL Database services to manage your databases. The API enables you to create, retrieve, update,
// and delete databases.
type InstancePoolsClient struct {
	BaseClient
}

// NewInstancePoolsClient creates an instance of the InstancePoolsClient client.
func NewInstancePoolsClient(subscriptionID string) InstancePoolsClient {
	return NewInstancePoolsClientWithBaseURI(DefaultBaseURI, subscriptionID)
}

// NewInstancePoolsClientWithBaseURI creates an instance of the InstancePoolsClient 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 NewInstancePoolsClientWithBaseURI(baseURI string, subscriptionID string) InstancePoolsClient {
	return InstancePoolsClient{NewWithBaseURI(baseURI, subscriptionID)}
}

// CreateOrUpdate creates or updates an instance pool.
// Parameters:
// resourceGroupName - the name of the resource group that contains the resource. You can obtain this value
// from the Azure Resource Manager API or the portal.
// instancePoolName - the name of the instance pool to be created or updated.
// parameters - the requested instance pool resource state.
func (client InstancePoolsClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, instancePoolName string, parameters InstancePool) (result InstancePoolsCreateOrUpdateFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.CreateOrUpdate")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	if err := validation.Validate([]validation.Validation{
		{TargetValue: parameters,
			Constraints: []validation.Constraint{{Target: "parameters.Sku", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "parameters.Sku.Name", Name: validation.Null, Rule: true, Chain: nil}}},
				{Target: "parameters.InstancePoolProperties", Name: validation.Null, Rule: false,
					Chain: []validation.Constraint{{Target: "parameters.InstancePoolProperties.SubnetID", Name: validation.Null, Rule: true, Chain: nil},
						{Target: "parameters.InstancePoolProperties.VCores", Name: validation.Null, Rule: true, Chain: nil},
					}}}}}); err != nil {
		return result, validation.NewError("sql.InstancePoolsClient", "CreateOrUpdate", err.Error())
	}

	req, err := client.CreateOrUpdatePreparer(ctx, resourceGroupName, instancePoolName, parameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "CreateOrUpdate", nil, "Failure preparing request")
		return
	}

	result, err = client.CreateOrUpdateSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "CreateOrUpdate", nil, "Failure sending request")
		return
	}

	return
}

// CreateOrUpdatePreparer prepares the CreateOrUpdate request.
func (client InstancePoolsClient) CreateOrUpdatePreparer(ctx context.Context, resourceGroupName string, instancePoolName string, parameters InstancePool) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"instancePoolName":  autorest.Encode("path", instancePoolName),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2018-06-01-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("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/instancePools/{instancePoolName}", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// CreateOrUpdateSender sends the CreateOrUpdate request. The method will close the
// http.Response Body if it receives an error.
func (client InstancePoolsClient) CreateOrUpdateSender(req *http.Request) (future InstancePoolsCreateOrUpdateFuture, err error) {
	var resp *http.Response
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = func(client InstancePoolsClient) (IP InstancePool, err error) {
		var done bool
		done, err = future.DoneWithContext(context.Background(), client)
		if err != nil {
			err = autorest.NewErrorWithError(err, "sql.InstancePoolsCreateOrUpdateFuture", "Result", future.Response(), "Polling failure")
			return
		}
		if !done {
			err = azure.NewAsyncOpIncompleteError("sql.InstancePoolsCreateOrUpdateFuture")
			return
		}
		sender := autorest.DecorateSender(client, autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
		IP.Response.Response, err = future.GetResult(sender)
		if IP.Response.Response == nil && err == nil {
			err = autorest.NewErrorWithError(err, "sql.InstancePoolsCreateOrUpdateFuture", "Result", nil, "received nil response and error")
		}
		if err == nil && IP.Response.Response.StatusCode != http.StatusNoContent {
			IP, err = client.CreateOrUpdateResponder(IP.Response.Response)
			if err != nil {
				err = autorest.NewErrorWithError(err, "sql.InstancePoolsCreateOrUpdateFuture", "Result", IP.Response.Response, "Failure responding to request")
			}
		}
		return
	}
	return
}

// CreateOrUpdateResponder handles the response to the CreateOrUpdate request. The method always
// closes the http.Response Body.
func (client InstancePoolsClient) CreateOrUpdateResponder(resp *http.Response) (result InstancePool, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusCreated, http.StatusAccepted),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Delete deletes an instance pool
// Parameters:
// resourceGroupName - the name of the resource group that contains the resource. You can obtain this value
// from the Azure Resource Manager API or the portal.
// instancePoolName - the name of the instance pool to be deleted
func (client InstancePoolsClient) Delete(ctx context.Context, resourceGroupName string, instancePoolName string) (result InstancePoolsDeleteFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.Delete")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.DeletePreparer(ctx, resourceGroupName, instancePoolName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "Delete", nil, "Failure preparing request")
		return
	}

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

	return
}

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

	const APIVersion = "2018-06-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsDelete(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/instancePools/{instancePoolName}", 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 InstancePoolsClient) DeleteSender(req *http.Request) (future InstancePoolsDeleteFuture, err error) {
	var resp *http.Response
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = func(client InstancePoolsClient) (ar autorest.Response, err error) {
		var done bool
		done, err = future.DoneWithContext(context.Background(), client)
		if err != nil {
			err = autorest.NewErrorWithError(err, "sql.InstancePoolsDeleteFuture", "Result", future.Response(), "Polling failure")
			return
		}
		if !done {
			err = azure.NewAsyncOpIncompleteError("sql.InstancePoolsDeleteFuture")
			return
		}
		ar.Response = future.Response()
		return
	}
	return
}

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

// Get gets an instance pool.
// Parameters:
// resourceGroupName - the name of the resource group that contains the resource. You can obtain this value
// from the Azure Resource Manager API or the portal.
// instancePoolName - the name of the instance pool to be retrieved.
func (client InstancePoolsClient) Get(ctx context.Context, resourceGroupName string, instancePoolName string) (result InstancePool, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.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, resourceGroupName, instancePoolName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "Get", nil, "Failure preparing request")
		return
	}

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

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

	return
}

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

	const APIVersion = "2018-06-01-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.Sql/instancePools/{instancePoolName}", 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 InstancePoolsClient) GetSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

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

// List gets a list of all instance pools in the subscription.
func (client InstancePoolsClient) List(ctx context.Context) (result InstancePoolListResultPage, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.List")
		defer func() {
			sc := -1
			if result.iplr.Response.Response != nil {
				sc = result.iplr.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.fn = client.listNextResults
	req, err := client.ListPreparer(ctx)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "List", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListSender(req)
	if err != nil {
		result.iplr.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "List", resp, "Failure sending request")
		return
	}

	result.iplr, err = client.ListResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "List", resp, "Failure responding to request")
		return
	}
	if result.iplr.hasNextLink() && result.iplr.IsEmpty() {
		err = result.NextWithContext(ctx)
		return
	}

	return
}

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

	const APIVersion = "2018-06-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

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

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

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

// listNextResults retrieves the next set of results, if any.
func (client InstancePoolsClient) listNextResults(ctx context.Context, lastResults InstancePoolListResult) (result InstancePoolListResult, err error) {
	req, err := lastResults.instancePoolListResultPreparer(ctx)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "listNextResults", nil, "Failure preparing next results request")
	}
	if req == nil {
		return
	}
	resp, err := client.ListSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		return result, autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "listNextResults", resp, "Failure sending next results request")
	}
	result, err = client.ListResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "listNextResults", resp, "Failure responding to next results request")
	}
	return
}

// ListComplete enumerates all values, automatically crossing page boundaries as required.
func (client InstancePoolsClient) ListComplete(ctx context.Context) (result InstancePoolListResultIterator, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.List")
		defer func() {
			sc := -1
			if result.Response().Response.Response != nil {
				sc = result.page.Response().Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.page, err = client.List(ctx)
	return
}

// ListByResourceGroup gets a list of instance pools in the resource group
// Parameters:
// resourceGroupName - the name of the resource group that contains the resource. You can obtain this value
// from the Azure Resource Manager API or the portal.
func (client InstancePoolsClient) ListByResourceGroup(ctx context.Context, resourceGroupName string) (result InstancePoolListResultPage, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.ListByResourceGroup")
		defer func() {
			sc := -1
			if result.iplr.Response.Response != nil {
				sc = result.iplr.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.fn = client.listByResourceGroupNextResults
	req, err := client.ListByResourceGroupPreparer(ctx, resourceGroupName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "ListByResourceGroup", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListByResourceGroupSender(req)
	if err != nil {
		result.iplr.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "ListByResourceGroup", resp, "Failure sending request")
		return
	}

	result.iplr, err = client.ListByResourceGroupResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "ListByResourceGroup", resp, "Failure responding to request")
		return
	}
	if result.iplr.hasNextLink() && result.iplr.IsEmpty() {
		err = result.NextWithContext(ctx)
		return
	}

	return
}

// ListByResourceGroupPreparer prepares the ListByResourceGroup request.
func (client InstancePoolsClient) ListByResourceGroupPreparer(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 = "2018-06-01-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.Sql/instancePools", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

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

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

// listByResourceGroupNextResults retrieves the next set of results, if any.
func (client InstancePoolsClient) listByResourceGroupNextResults(ctx context.Context, lastResults InstancePoolListResult) (result InstancePoolListResult, err error) {
	req, err := lastResults.instancePoolListResultPreparer(ctx)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "listByResourceGroupNextResults", nil, "Failure preparing next results request")
	}
	if req == nil {
		return
	}
	resp, err := client.ListByResourceGroupSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		return result, autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "listByResourceGroupNextResults", resp, "Failure sending next results request")
	}
	result, err = client.ListByResourceGroupResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "listByResourceGroupNextResults", resp, "Failure responding to next results request")
	}
	return
}

// ListByResourceGroupComplete enumerates all values, automatically crossing page boundaries as required.
func (client InstancePoolsClient) ListByResourceGroupComplete(ctx context.Context, resourceGroupName string) (result InstancePoolListResultIterator, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.ListByResourceGroup")
		defer func() {
			sc := -1
			if result.Response().Response.Response != nil {
				sc = result.page.Response().Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.page, err = client.ListByResourceGroup(ctx, resourceGroupName)
	return
}

// Update updates an instance pool.
// Parameters:
// resourceGroupName - the name of the resource group that contains the resource. You can obtain this value
// from the Azure Resource Manager API or the portal.
// instancePoolName - the name of the instance pool to be updated.
// parameters - the requested instance pool resource state.
func (client InstancePoolsClient) Update(ctx context.Context, resourceGroupName string, instancePoolName string, parameters InstancePoolUpdate) (result InstancePoolsUpdateFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/InstancePoolsClient.Update")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.UpdatePreparer(ctx, resourceGroupName, instancePoolName, parameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "sql.InstancePoolsClient", "Update", nil, "Failure preparing request")
		return
	}

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

	return
}

// UpdatePreparer prepares the Update request.
func (client InstancePoolsClient) UpdatePreparer(ctx context.Context, resourceGroupName string, instancePoolName string, parameters InstancePoolUpdate) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"instancePoolName":  autorest.Encode("path", instancePoolName),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2018-06-01-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("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/instancePools/{instancePoolName}", pathParameters),
		autorest.WithJSON(parameters),
		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 InstancePoolsClient) UpdateSender(req *http.Request) (future InstancePoolsUpdateFuture, err error) {
	var resp *http.Response
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = func(client InstancePoolsClient) (IP InstancePool, err error) {
		var done bool
		done, err = future.DoneWithContext(context.Background(), client)
		if err != nil {
			err = autorest.NewErrorWithError(err, "sql.InstancePoolsUpdateFuture", "Result", future.Response(), "Polling failure")
			return
		}
		if !done {
			err = azure.NewAsyncOpIncompleteError("sql.InstancePoolsUpdateFuture")
			return
		}
		sender := autorest.DecorateSender(client, autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
		IP.Response.Response, err = future.GetResult(sender)
		if IP.Response.Response == nil && err == nil {
			err = autorest.NewErrorWithError(err, "sql.InstancePoolsUpdateFuture", "Result", nil, "received nil response and error")
		}
		if err == nil && IP.Response.Response.StatusCode != http.StatusNoContent {
			IP, err = client.UpdateResponder(IP.Response.Response)
			if err != nil {
				err = autorest.NewErrorWithError(err, "sql.InstancePoolsUpdateFuture", "Result", IP.Response.Response, "Failure responding to request")
			}
		}
		return
	}
	return
}

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