subscription.go

package apimanagement

// 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"
	"net/http"
)

// SubscriptionClient is the apiManagement Client
type SubscriptionClient struct {
	BaseClient
}

// NewSubscriptionClient creates an instance of the SubscriptionClient client.
func NewSubscriptionClient(subscriptionID string) SubscriptionClient {
	return NewSubscriptionClientWithBaseURI(DefaultBaseURI, subscriptionID)
}

// NewSubscriptionClientWithBaseURI creates an instance of the SubscriptionClient client.
func NewSubscriptionClientWithBaseURI(baseURI string, subscriptionID string) SubscriptionClient {
	return SubscriptionClient{NewWithBaseURI(baseURI, subscriptionID)}
}

// CreateOrUpdate creates or updates the subscription of specified user to the specified product.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// sid - subscription entity Identifier. The entity represents the association between a user and a product in
// API Management.
// parameters - create parameters.
// notify - notify change in Subscription State.
// - If false, do not send any email notification for change of state of subscription
// - If true, send email notification of change of state of subscription
// ifMatch - eTag of the Entity. Not required when creating an entity, but required when updating an entity.
func (client SubscriptionClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, serviceName string, sid string, parameters SubscriptionCreateParameters, notify *bool, ifMatch string) (result SubscriptionContract, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: sid,
			Constraints: []validation.Constraint{{Target: "sid", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "sid", Name: validation.Pattern, Rule: `(^[\w]+$)|(^[\w][\w\-]+[\w]$)`, Chain: nil}}},
		{TargetValue: parameters,
			Constraints: []validation.Constraint{{Target: "parameters.SubscriptionCreateParameterProperties", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "parameters.SubscriptionCreateParameterProperties.UserID", Name: validation.Null, Rule: true, Chain: nil},
					{Target: "parameters.SubscriptionCreateParameterProperties.ProductID", Name: validation.Null, Rule: true, Chain: nil},
					{Target: "parameters.SubscriptionCreateParameterProperties.DisplayName", Name: validation.Null, Rule: true,
						Chain: []validation.Constraint{{Target: "parameters.SubscriptionCreateParameterProperties.DisplayName", Name: validation.MaxLength, Rule: 100, Chain: nil},
							{Target: "parameters.SubscriptionCreateParameterProperties.DisplayName", Name: validation.MinLength, Rule: 1, Chain: nil},
						}},
					{Target: "parameters.SubscriptionCreateParameterProperties.PrimaryKey", Name: validation.Null, Rule: false,
						Chain: []validation.Constraint{{Target: "parameters.SubscriptionCreateParameterProperties.PrimaryKey", Name: validation.MaxLength, Rule: 256, Chain: nil},
							{Target: "parameters.SubscriptionCreateParameterProperties.PrimaryKey", Name: validation.MinLength, Rule: 1, Chain: nil},
						}},
					{Target: "parameters.SubscriptionCreateParameterProperties.SecondaryKey", Name: validation.Null, Rule: false,
						Chain: []validation.Constraint{{Target: "parameters.SubscriptionCreateParameterProperties.SecondaryKey", Name: validation.MaxLength, Rule: 256, Chain: nil},
							{Target: "parameters.SubscriptionCreateParameterProperties.SecondaryKey", Name: validation.MinLength, Rule: 1, Chain: nil},
						}},
				}}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "CreateOrUpdate", err.Error())
	}

	req, err := client.CreateOrUpdatePreparer(ctx, resourceGroupName, serviceName, sid, parameters, notify, ifMatch)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "CreateOrUpdate", nil, "Failure preparing request")
		return
	}

	resp, err := client.CreateOrUpdateSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "CreateOrUpdate", resp, "Failure sending request")
		return
	}

	result, err = client.CreateOrUpdateResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "CreateOrUpdate", resp, "Failure responding to request")
	}

	return
}

// CreateOrUpdatePreparer prepares the CreateOrUpdate request.
func (client SubscriptionClient) CreateOrUpdatePreparer(ctx context.Context, resourceGroupName string, serviceName string, sid string, parameters SubscriptionCreateParameters, notify *bool, ifMatch string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"sid":               autorest.Encode("path", sid),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2018-06-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}
	if notify != nil {
		queryParameters["notify"] = autorest.Encode("query", *notify)
	}

	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPut(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/subscriptions/{sid}", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters))
	if len(ifMatch) > 0 {
		preparer = autorest.DecoratePreparer(preparer,
			autorest.WithHeader("If-Match", autorest.String(ifMatch)))
	}
	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 SubscriptionClient) CreateOrUpdateSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

// CreateOrUpdateResponder handles the response to the CreateOrUpdate request. The method always
// closes the http.Response Body.
func (client SubscriptionClient) CreateOrUpdateResponder(resp *http.Response) (result SubscriptionContract, 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 deletes the specified subscription.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// sid - subscription entity Identifier. The entity represents the association between a user and a product in
// API Management.
// ifMatch - eTag of the Entity. ETag should match the current entity state from the header response of the GET
// request or it should be * for unconditional update.
func (client SubscriptionClient) Delete(ctx context.Context, resourceGroupName string, serviceName string, sid string, ifMatch string) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: sid,
			Constraints: []validation.Constraint{{Target: "sid", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "sid", Name: validation.Pattern, Rule: `(^[\w]+$)|(^[\w][\w\-]+[\w]$)`, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "Delete", err.Error())
	}

	req, err := client.DeletePreparer(ctx, resourceGroupName, serviceName, sid, ifMatch)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "Delete", nil, "Failure preparing request")
		return
	}

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

	result, err = client.DeleteResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "Delete", resp, "Failure responding to request")
	}

	return
}

// DeletePreparer prepares the Delete request.
func (client SubscriptionClient) DeletePreparer(ctx context.Context, resourceGroupName string, serviceName string, sid string, ifMatch string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"sid":               autorest.Encode("path", sid),
		"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.ApiManagement/service/{serviceName}/subscriptions/{sid}", pathParameters),
		autorest.WithQueryParameters(queryParameters),
		autorest.WithHeader("If-Match", autorest.String(ifMatch)))
	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 SubscriptionClient) DeleteSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

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

// Get gets the specified Subscription entity.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// sid - subscription entity Identifier. The entity represents the association between a user and a product in
// API Management.
func (client SubscriptionClient) Get(ctx context.Context, resourceGroupName string, serviceName string, sid string) (result SubscriptionContract, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: sid,
			Constraints: []validation.Constraint{{Target: "sid", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "sid", Name: validation.Pattern, Rule: `(^[\w]+$)|(^[\w][\w\-]+[\w]$)`, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "Get", err.Error())
	}

	req, err := client.GetPreparer(ctx, resourceGroupName, serviceName, sid)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "Get", nil, "Failure preparing request")
		return
	}

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

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

	return
}

// GetPreparer prepares the Get request.
func (client SubscriptionClient) GetPreparer(ctx context.Context, resourceGroupName string, serviceName string, sid string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"sid":               autorest.Encode("path", sid),
		"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.ApiManagement/service/{serviceName}/subscriptions/{sid}", 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 SubscriptionClient) GetSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

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

// GetEntityTag gets the entity state (Etag) version of the apimanagement subscription specified by its identifier.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// sid - subscription entity Identifier. The entity represents the association between a user and a product in
// API Management.
func (client SubscriptionClient) GetEntityTag(ctx context.Context, resourceGroupName string, serviceName string, sid string) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: sid,
			Constraints: []validation.Constraint{{Target: "sid", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "sid", Name: validation.Pattern, Rule: `(^[\w]+$)|(^[\w][\w\-]+[\w]$)`, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "GetEntityTag", err.Error())
	}

	req, err := client.GetEntityTagPreparer(ctx, resourceGroupName, serviceName, sid)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "GetEntityTag", nil, "Failure preparing request")
		return
	}

	resp, err := client.GetEntityTagSender(req)
	if err != nil {
		result.Response = resp
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "GetEntityTag", resp, "Failure sending request")
		return
	}

	result, err = client.GetEntityTagResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "GetEntityTag", resp, "Failure responding to request")
	}

	return
}

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

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

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

// GetEntityTagSender sends the GetEntityTag request. The method will close the
// http.Response Body if it receives an error.
func (client SubscriptionClient) GetEntityTagSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

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

// List lists all subscriptions of the API Management service instance.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// filter - | Field        | Supported operators    | Supported functions                         |
// |--------------|------------------------|---------------------------------------------|
// | id           | ge, le, eq, ne, gt, lt | substringof, contains, startswith, endswith |
// | name         | ge, le, eq, ne, gt, lt | substringof, contains, startswith, endswith |
// | stateComment | ge, le, eq, ne, gt, lt | substringof, contains, startswith, endswith |
// | userId       | ge, le, eq, ne, gt, lt | substringof, contains, startswith, endswith |
// | productId    | ge, le, eq, ne, gt, lt | substringof, contains, startswith, endswith |
// | state        | eq                     |                                             |
// top - number of records to return.
// skip - number of records to skip.
func (client SubscriptionClient) List(ctx context.Context, resourceGroupName string, serviceName string, filter string, top *int32, skip *int32) (result SubscriptionCollectionPage, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: top,
			Constraints: []validation.Constraint{{Target: "top", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "top", Name: validation.InclusiveMinimum, Rule: 1, Chain: nil}}}}},
		{TargetValue: skip,
			Constraints: []validation.Constraint{{Target: "skip", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "skip", Name: validation.InclusiveMinimum, Rule: 0, Chain: nil}}}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "List", err.Error())
	}

	result.fn = client.listNextResults
	req, err := client.ListPreparer(ctx, resourceGroupName, serviceName, filter, top, skip)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "List", nil, "Failure preparing request")
		return
	}

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

	result.sc, err = client.ListResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "List", resp, "Failure responding to request")
	}

	return
}

// ListPreparer prepares the List request.
func (client SubscriptionClient) ListPreparer(ctx context.Context, resourceGroupName string, serviceName string, filter string, top *int32, skip *int32) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2018-06-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}
	if len(filter) > 0 {
		queryParameters["$filter"] = autorest.Encode("query", filter)
	}
	if top != nil {
		queryParameters["$top"] = autorest.Encode("query", *top)
	}
	if skip != nil {
		queryParameters["$skip"] = autorest.Encode("query", *skip)
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/subscriptions", 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 SubscriptionClient) ListSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

// ListResponder handles the response to the List request. The method always
// closes the http.Response Body.
func (client SubscriptionClient) ListResponder(resp *http.Response) (result SubscriptionCollection, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		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 SubscriptionClient) listNextResults(lastResults SubscriptionCollection) (result SubscriptionCollection, err error) {
	req, err := lastResults.subscriptionCollectionPreparer()
	if err != nil {
		return result, autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "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, "apimanagement.SubscriptionClient", "listNextResults", resp, "Failure sending next results request")
	}
	result, err = client.ListResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "listNextResults", resp, "Failure responding to next results request")
	}
	return
}

// ListComplete enumerates all values, automatically crossing page boundaries as required.
func (client SubscriptionClient) ListComplete(ctx context.Context, resourceGroupName string, serviceName string, filter string, top *int32, skip *int32) (result SubscriptionCollectionIterator, err error) {
	result.page, err = client.List(ctx, resourceGroupName, serviceName, filter, top, skip)
	return
}

// RegeneratePrimaryKey regenerates primary key of existing subscription of the API Management service instance.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// sid - subscription entity Identifier. The entity represents the association between a user and a product in
// API Management.
func (client SubscriptionClient) RegeneratePrimaryKey(ctx context.Context, resourceGroupName string, serviceName string, sid string) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: sid,
			Constraints: []validation.Constraint{{Target: "sid", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "sid", Name: validation.Pattern, Rule: `(^[\w]+$)|(^[\w][\w\-]+[\w]$)`, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "RegeneratePrimaryKey", err.Error())
	}

	req, err := client.RegeneratePrimaryKeyPreparer(ctx, resourceGroupName, serviceName, sid)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "RegeneratePrimaryKey", nil, "Failure preparing request")
		return
	}

	resp, err := client.RegeneratePrimaryKeySender(req)
	if err != nil {
		result.Response = resp
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "RegeneratePrimaryKey", resp, "Failure sending request")
		return
	}

	result, err = client.RegeneratePrimaryKeyResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "RegeneratePrimaryKey", resp, "Failure responding to request")
	}

	return
}

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

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

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/subscriptions/{sid}/regeneratePrimaryKey", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// RegeneratePrimaryKeySender sends the RegeneratePrimaryKey request. The method will close the
// http.Response Body if it receives an error.
func (client SubscriptionClient) RegeneratePrimaryKeySender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

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

// RegenerateSecondaryKey regenerates secondary key of existing subscription of the API Management service instance.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// sid - subscription entity Identifier. The entity represents the association between a user and a product in
// API Management.
func (client SubscriptionClient) RegenerateSecondaryKey(ctx context.Context, resourceGroupName string, serviceName string, sid string) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: sid,
			Constraints: []validation.Constraint{{Target: "sid", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "sid", Name: validation.Pattern, Rule: `(^[\w]+$)|(^[\w][\w\-]+[\w]$)`, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "RegenerateSecondaryKey", err.Error())
	}

	req, err := client.RegenerateSecondaryKeyPreparer(ctx, resourceGroupName, serviceName, sid)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "RegenerateSecondaryKey", nil, "Failure preparing request")
		return
	}

	resp, err := client.RegenerateSecondaryKeySender(req)
	if err != nil {
		result.Response = resp
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "RegenerateSecondaryKey", resp, "Failure sending request")
		return
	}

	result, err = client.RegenerateSecondaryKeyResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "RegenerateSecondaryKey", resp, "Failure responding to request")
	}

	return
}

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

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

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/subscriptions/{sid}/regenerateSecondaryKey", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// RegenerateSecondaryKeySender sends the RegenerateSecondaryKey request. The method will close the
// http.Response Body if it receives an error.
func (client SubscriptionClient) RegenerateSecondaryKeySender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

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

// Update updates the details of a subscription specificied by its identifier.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// sid - subscription entity Identifier. The entity represents the association between a user and a product in
// API Management.
// parameters - update parameters.
// ifMatch - eTag of the Entity. ETag should match the current entity state from the header response of the GET
// request or it should be * for unconditional update.
// notify - notify change in Subscription State.
// - If false, do not send any email notification for change of state of subscription
// - If true, send email notification of change of state of subscription
func (client SubscriptionClient) Update(ctx context.Context, resourceGroupName string, serviceName string, sid string, parameters SubscriptionUpdateParameters, ifMatch string, notify *bool) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: sid,
			Constraints: []validation.Constraint{{Target: "sid", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "sid", Name: validation.Pattern, Rule: `(^[\w]+$)|(^[\w][\w\-]+[\w]$)`, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.SubscriptionClient", "Update", err.Error())
	}

	req, err := client.UpdatePreparer(ctx, resourceGroupName, serviceName, sid, parameters, ifMatch, notify)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "Update", nil, "Failure preparing request")
		return
	}

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

	result, err = client.UpdateResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.SubscriptionClient", "Update", resp, "Failure responding to request")
	}

	return
}

// UpdatePreparer prepares the Update request.
func (client SubscriptionClient) UpdatePreparer(ctx context.Context, resourceGroupName string, serviceName string, sid string, parameters SubscriptionUpdateParameters, ifMatch string, notify *bool) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"sid":               autorest.Encode("path", sid),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2018-06-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}
	if notify != nil {
		queryParameters["notify"] = autorest.Encode("query", *notify)
	}

	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPatch(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/subscriptions/{sid}", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters),
		autorest.WithHeader("If-Match", autorest.String(ifMatch)))
	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 SubscriptionClient) UpdateSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

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