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

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

// NewGatewayClient creates an instance of the GatewayClient client.
func NewGatewayClient(subscriptionID string) GatewayClient {
	return NewGatewayClientWithBaseURI(DefaultBaseURI, subscriptionID)
}

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

// CreateOrUpdate creates or updates a Gateway to be used in Api Management instance.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
// ifMatch - eTag of the Entity. Not required when creating an entity, but required when updating an entity.
func (client GatewayClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string, parameters GatewayContract, ifMatch string) (result GatewayContract, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.CreateOrUpdate")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}},
		{TargetValue: parameters,
			Constraints: []validation.Constraint{{Target: "parameters.GatewayContractProperties", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "parameters.GatewayContractProperties.LocationData", Name: validation.Null, Rule: false,
					Chain: []validation.Constraint{{Target: "parameters.GatewayContractProperties.LocationData.Name", Name: validation.Null, Rule: true,
						Chain: []validation.Constraint{{Target: "parameters.GatewayContractProperties.LocationData.Name", Name: validation.MaxLength, Rule: 256, Chain: nil}}},
						{Target: "parameters.GatewayContractProperties.LocationData.City", Name: validation.Null, Rule: false,
							Chain: []validation.Constraint{{Target: "parameters.GatewayContractProperties.LocationData.City", Name: validation.MaxLength, Rule: 256, Chain: nil}}},
						{Target: "parameters.GatewayContractProperties.LocationData.District", Name: validation.Null, Rule: false,
							Chain: []validation.Constraint{{Target: "parameters.GatewayContractProperties.LocationData.District", Name: validation.MaxLength, Rule: 256, Chain: nil}}},
						{Target: "parameters.GatewayContractProperties.LocationData.CountryOrRegion", Name: validation.Null, Rule: false,
							Chain: []validation.Constraint{{Target: "parameters.GatewayContractProperties.LocationData.CountryOrRegion", Name: validation.MaxLength, Rule: 256, Chain: nil}}},
					}},
					{Target: "parameters.GatewayContractProperties.Description", Name: validation.Null, Rule: false,
						Chain: []validation.Constraint{{Target: "parameters.GatewayContractProperties.Description", Name: validation.MaxLength, Rule: 1000, Chain: nil}}},
				}}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "CreateOrUpdate", err.Error())
	}

	req, err := client.CreateOrUpdatePreparer(ctx, resourceGroupName, serviceName, gatewayID, parameters, ifMatch)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "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.GatewayClient", "CreateOrUpdate", resp, "Failure sending request")
		return
	}

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

	return
}

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

	const APIVersion = "2019-12-01-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.ApiManagement/service/{serviceName}/gateways/{gatewayId}", 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 GatewayClient) CreateOrUpdateSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

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

// Delete deletes specific Gateway.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
// 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 GatewayClient) Delete(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string, ifMatch string) (result autorest.Response, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.Delete")
		defer func() {
			sc := -1
			if result.Response != nil {
				sc = result.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "Delete", err.Error())
	}

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

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

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

	return
}

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

	const APIVersion = "2019-12-01-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}/gateways/{gatewayId}", 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 GatewayClient) DeleteSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

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

// GenerateToken gets the Shared Access Authorization Token for the gateway.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
func (client GatewayClient) GenerateToken(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string, parameters GatewayTokenRequestContract) (result GatewayTokenContract, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.GenerateToken")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}},
		{TargetValue: parameters,
			Constraints: []validation.Constraint{{Target: "parameters.Expiry", Name: validation.Null, Rule: true, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "GenerateToken", err.Error())
	}

	req, err := client.GenerateTokenPreparer(ctx, resourceGroupName, serviceName, gatewayID, parameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "GenerateToken", nil, "Failure preparing request")
		return
	}

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

	result, err = client.GenerateTokenResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "GenerateToken", resp, "Failure responding to request")
	}

	return
}

// GenerateTokenPreparer prepares the GenerateToken request.
func (client GatewayClient) GenerateTokenPreparer(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string, parameters GatewayTokenRequestContract) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"gatewayId":         autorest.Encode("path", gatewayID),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2019-12-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/gateways/{gatewayId}/generateToken", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

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

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

// Get gets the details of the Gateway specified by its identifier.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
func (client GatewayClient) Get(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string) (result GatewayContract, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.Get")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "Get", err.Error())
	}

	req, err := client.GetPreparer(ctx, resourceGroupName, serviceName, gatewayID)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "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.GatewayClient", "Get", resp, "Failure sending request")
		return
	}

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

	return
}

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

	const APIVersion = "2019-12-01-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}/gateways/{gatewayId}", 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 GatewayClient) 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 GatewayClient) GetResponder(resp *http.Response) (result GatewayContract, err error) {
	err = autorest.Respond(
		resp,
		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 Gateway specified by its identifier.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
func (client GatewayClient) GetEntityTag(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string) (result autorest.Response, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.GetEntityTag")
		defer func() {
			sc := -1
			if result.Response != nil {
				sc = result.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "GetEntityTag", err.Error())
	}

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

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

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

	return
}

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

	const APIVersion = "2019-12-01-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}/gateways/{gatewayId}", 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 GatewayClient) GetEntityTagSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

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

// ListByService lists a collection of gateways registered with service instance.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// top - number of records to return.
// skip - number of records to skip.
func (client GatewayClient) ListByService(ctx context.Context, resourceGroupName string, serviceName string, top *int32, skip *int32) (result GatewayCollectionPage, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.ListByService")
		defer func() {
			sc := -1
			if result.gc.Response.Response != nil {
				sc = result.gc.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: int64(1), Chain: nil}}}}},
		{TargetValue: skip,
			Constraints: []validation.Constraint{{Target: "skip", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "skip", Name: validation.InclusiveMinimum, Rule: int64(0), Chain: nil}}}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "ListByService", err.Error())
	}

	result.fn = client.listByServiceNextResults
	req, err := client.ListByServicePreparer(ctx, resourceGroupName, serviceName, top, skip)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "ListByService", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListByServiceSender(req)
	if err != nil {
		result.gc.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "ListByService", resp, "Failure sending request")
		return
	}

	result.gc, err = client.ListByServiceResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "ListByService", resp, "Failure responding to request")
	}
	if result.gc.hasNextLink() && result.gc.IsEmpty() {
		err = result.NextWithContext(ctx)
	}

	return
}

// ListByServicePreparer prepares the ListByService request.
func (client GatewayClient) ListByServicePreparer(ctx context.Context, resourceGroupName string, serviceName 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 = "2019-12-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}
	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}/gateways", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

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

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

// listByServiceNextResults retrieves the next set of results, if any.
func (client GatewayClient) listByServiceNextResults(ctx context.Context, lastResults GatewayCollection) (result GatewayCollection, err error) {
	req, err := lastResults.gatewayCollectionPreparer(ctx)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "listByServiceNextResults", nil, "Failure preparing next results request")
	}
	if req == nil {
		return
	}
	resp, err := client.ListByServiceSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		return result, autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "listByServiceNextResults", resp, "Failure sending next results request")
	}
	result, err = client.ListByServiceResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "listByServiceNextResults", resp, "Failure responding to next results request")
	}
	return
}

// ListByServiceComplete enumerates all values, automatically crossing page boundaries as required.
func (client GatewayClient) ListByServiceComplete(ctx context.Context, resourceGroupName string, serviceName string, top *int32, skip *int32) (result GatewayCollectionIterator, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.ListByService")
		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.ListByService(ctx, resourceGroupName, serviceName, top, skip)
	return
}

// ListKeys retrieves gateway keys.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
func (client GatewayClient) ListKeys(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string) (result GatewayKeysContract, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.ListKeys")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "ListKeys", err.Error())
	}

	req, err := client.ListKeysPreparer(ctx, resourceGroupName, serviceName, gatewayID)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "ListKeys", nil, "Failure preparing request")
		return
	}

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

	result, err = client.ListKeysResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "ListKeys", resp, "Failure responding to request")
	}

	return
}

// ListKeysPreparer prepares the ListKeys request.
func (client GatewayClient) ListKeysPreparer(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"gatewayId":         autorest.Encode("path", gatewayID),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2019-12-01-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}/gateways/{gatewayId}/listKeys", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

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

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

// RegenerateKey regenerates specified gateway key invalidating any tokens created with it.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
func (client GatewayClient) RegenerateKey(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string, parameters GatewayKeyRegenerationRequestContract) (result autorest.Response, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.RegenerateKey")
		defer func() {
			sc := -1
			if result.Response != nil {
				sc = result.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "RegenerateKey", err.Error())
	}

	req, err := client.RegenerateKeyPreparer(ctx, resourceGroupName, serviceName, gatewayID, parameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "RegenerateKey", nil, "Failure preparing request")
		return
	}

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

	result, err = client.RegenerateKeyResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.GatewayClient", "RegenerateKey", resp, "Failure responding to request")
	}

	return
}

// RegenerateKeyPreparer prepares the RegenerateKey request.
func (client GatewayClient) RegenerateKeyPreparer(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string, parameters GatewayKeyRegenerationRequestContract) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"gatewayId":         autorest.Encode("path", gatewayID),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2019-12-01-preview"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/gateways/{gatewayId}/regenerateKey", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

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

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

// Update updates the details of the gateway specified by its identifier.
// Parameters:
// resourceGroupName - the name of the resource group.
// serviceName - the name of the API Management service.
// gatewayID - gateway entity identifier. Must be unique in the current API Management service instance. Must
// not have value 'managed'
// 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 GatewayClient) Update(ctx context.Context, resourceGroupName string, serviceName string, gatewayID string, parameters GatewayContract, ifMatch string) (result autorest.Response, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/GatewayClient.Update")
		defer func() {
			sc := -1
			if result.Response != nil {
				sc = result.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	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: gatewayID,
			Constraints: []validation.Constraint{{Target: "gatewayID", Name: validation.MaxLength, Rule: 80, Chain: nil},
				{Target: "gatewayID", Name: validation.MinLength, Rule: 1, Chain: nil}}}}); err != nil {
		return result, validation.NewError("apimanagement.GatewayClient", "Update", err.Error())
	}

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

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

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

	return
}

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

	const APIVersion = "2019-12-01-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.ApiManagement/service/{serviceName}/gateways/{gatewayId}", 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 GatewayClient) UpdateSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

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