vendor: update all dependencies to latest versions

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-02-27-preview/billing/client.go

@@ -0,0 +1,52 @@
+// Package billing implements the Azure ARM Billing service API version 2017-02-27-preview.
+//
+// Billing client provides access to billing resources for Azure Web-Direct subscriptions. Other subscription types
+// which were not purchased directly through the Azure web portal are not supported through this preview API.
+package billing
+
+// 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 (
+	"github.com/Azure/go-autorest/autorest"
+)
+
+const (
+	// DefaultBaseURI is the default URI used for the service Billing
+	DefaultBaseURI = "https://management.azure.com"
+)
+
+// BaseClient is the base client for Billing.
+type BaseClient struct {
+	autorest.Client
+	BaseURI        string
+	SubscriptionID string
+}
+
+// New creates an instance of the BaseClient client.
+func New(subscriptionID string) BaseClient {
+	return NewWithBaseURI(DefaultBaseURI, subscriptionID)
+}
+
+// NewWithBaseURI creates an instance of the BaseClient client.
+func NewWithBaseURI(baseURI string, subscriptionID string) BaseClient {
+	return BaseClient{
+		Client:         autorest.NewClientWithUserAgent(UserAgent()),
+		BaseURI:        baseURI,
+		SubscriptionID: subscriptionID,
+	}
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-02-27-preview/billing/invoices.go

@@ -0,0 +1,293 @@
+package billing
+
+// 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"
+)
+
+// InvoicesClient is the billing client provides access to billing resources for Azure Web-Direct subscriptions. Other
+// subscription types which were not purchased directly through the Azure web portal are not supported through this
+// preview API.
+type InvoicesClient struct {
+	BaseClient
+}
+
+// NewInvoicesClient creates an instance of the InvoicesClient client.
+func NewInvoicesClient(subscriptionID string) InvoicesClient {
+	return NewInvoicesClientWithBaseURI(DefaultBaseURI, subscriptionID)
+}
+
+// NewInvoicesClientWithBaseURI creates an instance of the InvoicesClient client.
+func NewInvoicesClientWithBaseURI(baseURI string, subscriptionID string) InvoicesClient {
+	return InvoicesClient{NewWithBaseURI(baseURI, subscriptionID)}
+}
+
+// Get gets a named invoice resource. When getting a single invoice, the downloadUrl property is expanded
+// automatically.
+//
+// invoiceName is the name of an invoice resource.
+func (client InvoicesClient) Get(ctx context.Context, invoiceName string) (result Invoice, err error) {
+	req, err := client.GetPreparer(ctx, invoiceName)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "Get", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.GetSender(req)
+	if err != nil {
+		result.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "Get", resp, "Failure sending request")
+		return
+	}
+
+	result, err = client.GetResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "Get", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// GetPreparer prepares the Get request.
+func (client InvoicesClient) GetPreparer(ctx context.Context, invoiceName string) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"invoiceName":    autorest.Encode("path", invoiceName),
+		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-02-27-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/invoices/{invoiceName}", 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 InvoicesClient) 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 InvoicesClient) GetResponder(resp *http.Response) (result Invoice, err error) {
+	err = autorest.Respond(
+		resp,
+		client.ByInspecting(),
+		azure.WithErrorUnlessStatusCode(http.StatusOK),
+		autorest.ByUnmarshallingJSON(&result),
+		autorest.ByClosing())
+	result.Response = autorest.Response{Response: resp}
+	return
+}
+
+// GetLatest gets the most recent invoice. When getting a single invoice, the downloadUrl property is expanded
+// automatically.
+func (client InvoicesClient) GetLatest(ctx context.Context) (result Invoice, err error) {
+	req, err := client.GetLatestPreparer(ctx)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "GetLatest", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.GetLatestSender(req)
+	if err != nil {
+		result.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "GetLatest", resp, "Failure sending request")
+		return
+	}
+
+	result, err = client.GetLatestResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "GetLatest", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// GetLatestPreparer prepares the GetLatest request.
+func (client InvoicesClient) GetLatestPreparer(ctx context.Context) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-02-27-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/invoices/latest", pathParameters),
+		autorest.WithQueryParameters(queryParameters))
+	return preparer.Prepare((&http.Request{}).WithContext(ctx))
+}
+
+// GetLatestSender sends the GetLatest request. The method will close the
+// http.Response Body if it receives an error.
+func (client InvoicesClient) GetLatestSender(req *http.Request) (*http.Response, error) {
+	return autorest.SendWithSender(client, req,
+		azure.DoRetryWithRegistration(client.Client))
+}
+
+// GetLatestResponder handles the response to the GetLatest request. The method always
+// closes the http.Response Body.
+func (client InvoicesClient) GetLatestResponder(resp *http.Response) (result Invoice, err error) {
+	err = autorest.Respond(
+		resp,
+		client.ByInspecting(),
+		azure.WithErrorUnlessStatusCode(http.StatusOK),
+		autorest.ByUnmarshallingJSON(&result),
+		autorest.ByClosing())
+	result.Response = autorest.Response{Response: resp}
+	return
+}
+
+// List lists the available invoices for a subscription in reverse chronological order beginning with the most recent
+// invoice. In preview, invoices are available via this API only for invoice periods which end December 1, 2016 or
+// later
+//
+// expand is may be used to expand the downloadUrl property within a list of invoices. This enables download links to
+// be generated for multiple invoices at once. By default, downloadURLs are not included when listing invoices. filter
+// is may be used to filter invoices by invoicePeriodEndDate. The filter supports 'eq', 'lt', 'gt', 'le', 'ge', and
+// 'and'. It does not currently support 'ne', 'or', or 'not' skiptoken is skiptoken is only used if a previous
+// operation returned a partial result. If a previous response contains a nextLink element, the value of the nextLink
+// element will include a skiptoken parameter that specifies a starting point to use for subsequent calls. top is may
+// be used to limit the number of results to the most recent N invoices.
+func (client InvoicesClient) List(ctx context.Context, expand string, filter string, skiptoken string, top *int32) (result InvoicesListResultPage, err error) {
+	if err := validation.Validate([]validation.Validation{
+		{TargetValue: top,
+			Constraints: []validation.Constraint{{Target: "top", Name: validation.Null, Rule: false,
+				Chain: []validation.Constraint{{Target: "top", Name: validation.InclusiveMaximum, Rule: 100, Chain: nil},
+					{Target: "top", Name: validation.InclusiveMinimum, Rule: 1, Chain: nil},
+				}}}}}); err != nil {
+		return result, validation.NewErrorWithValidationError(err, "billing.InvoicesClient", "List")
+	}
+
+	result.fn = client.listNextResults
+	req, err := client.ListPreparer(ctx, expand, filter, skiptoken, top)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "List", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.ListSender(req)
+	if err != nil {
+		result.ilr.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "List", resp, "Failure sending request")
+		return
+	}
+
+	result.ilr, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "List", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// ListPreparer prepares the List request.
+func (client InvoicesClient) ListPreparer(ctx context.Context, expand string, filter string, skiptoken string, top *int32) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-02-27-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
+	if len(filter) > 0 {
+		queryParameters["$filter"] = autorest.Encode("query", filter)
+	}
+	if len(skiptoken) > 0 {
+		queryParameters["$skiptoken"] = autorest.Encode("query", skiptoken)
+	}
+	if top != nil {
+		queryParameters["$top"] = autorest.Encode("query", *top)
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/invoices", 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 InvoicesClient) 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 InvoicesClient) ListResponder(resp *http.Response) (result InvoicesListResult, 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 InvoicesClient) listNextResults(lastResults InvoicesListResult) (result InvoicesListResult, err error) {
+	req, err := lastResults.invoicesListResultPreparer()
+	if err != nil {
+		return result, autorest.NewErrorWithError(err, "billing.InvoicesClient", "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, "billing.InvoicesClient", "listNextResults", resp, "Failure sending next results request")
+	}
+	result, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "listNextResults", resp, "Failure responding to next results request")
+	}
+	return
+}
+
+// ListComplete enumerates all values, automatically crossing page boundaries as required.
+func (client InvoicesClient) ListComplete(ctx context.Context, expand string, filter string, skiptoken string, top *int32) (result InvoicesListResultIterator, err error) {
+	result.page, err = client.List(ctx, expand, filter, skiptoken, top)
+	return
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-02-27-preview/billing/models.go

@@ -0,0 +1,358 @@
+package billing
+
+// 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 (
+	"encoding/json"
+	"github.com/Azure/go-autorest/autorest"
+	"github.com/Azure/go-autorest/autorest/date"
+	"github.com/Azure/go-autorest/autorest/to"
+	"net/http"
+)
+
+// DownloadURL a secure URL that can be used to download a PDF invoice until the URL expires.
+type DownloadURL struct {
+	// ExpiryTime - The time in UTC at which this download URL will expire.
+	ExpiryTime *date.Time `json:"expiryTime,omitempty"`
+	// URL - The URL to the PDF file.
+	URL *string `json:"url,omitempty"`
+}
+
+// ErrorDetails the details of the error.
+type ErrorDetails struct {
+	// Code - Error code.
+	Code *string `json:"code,omitempty"`
+	// Message - Error message indicating why the operation failed.
+	Message *string `json:"message,omitempty"`
+	// Target - The target of the particular error.
+	Target *string `json:"target,omitempty"`
+}
+
+// ErrorResponse error response indicates that the service is not able to process the incoming request. The reason is
+// provided in the error message.
+type ErrorResponse struct {
+	Error *ErrorDetails `json:"error,omitempty"`
+}
+
+// Invoice an invoice resource can be used download a PDF version of an invoice.
+type Invoice struct {
+	autorest.Response `json:"-"`
+	// ID - Resource Id
+	ID *string `json:"id,omitempty"`
+	// Name - Resource name
+	Name *string `json:"name,omitempty"`
+	// Type - Resource type
+	Type               *string `json:"type,omitempty"`
+	*InvoiceProperties `json:"properties,omitempty"`
+}
+
+// UnmarshalJSON is the custom unmarshaler for Invoice struct.
+func (i *Invoice) UnmarshalJSON(body []byte) error {
+	var m map[string]*json.RawMessage
+	err := json.Unmarshal(body, &m)
+	if err != nil {
+		return err
+	}
+	var v *json.RawMessage
+
+	v = m["properties"]
+	if v != nil {
+		var properties InvoiceProperties
+		err = json.Unmarshal(*m["properties"], &properties)
+		if err != nil {
+			return err
+		}
+		i.InvoiceProperties = &properties
+	}
+
+	v = m["id"]
+	if v != nil {
+		var ID string
+		err = json.Unmarshal(*m["id"], &ID)
+		if err != nil {
+			return err
+		}
+		i.ID = &ID
+	}
+
+	v = m["name"]
+	if v != nil {
+		var name string
+		err = json.Unmarshal(*m["name"], &name)
+		if err != nil {
+			return err
+		}
+		i.Name = &name
+	}
+
+	v = m["type"]
+	if v != nil {
+		var typeVar string
+		err = json.Unmarshal(*m["type"], &typeVar)
+		if err != nil {
+			return err
+		}
+		i.Type = &typeVar
+	}
+
+	return nil
+}
+
+// InvoiceProperties the properties of the invoice.
+type InvoiceProperties struct {
+	// InvoicePeriodStartDate - The start of the date range covered by the invoice.
+	InvoicePeriodStartDate *date.Date `json:"invoicePeriodStartDate,omitempty"`
+	// InvoicePeriodEndDate - The end of the date range covered by the invoice.
+	InvoicePeriodEndDate *date.Date `json:"invoicePeriodEndDate,omitempty"`
+	// DownloadURL - A secure link to download the PDF version of an invoice. The link will cease to work after its expiry time is reached.
+	DownloadURL *DownloadURL `json:"downloadUrl,omitempty"`
+}
+
+// InvoicesListResult result of the request to list invoices. It contains a list of available invoices in reverse
+// chronological order.
+type InvoicesListResult struct {
+	autorest.Response `json:"-"`
+	// Value - The list of invoices.
+	Value *[]Invoice `json:"value,omitempty"`
+	// NextLink - the link (url) to the next page of results.
+	NextLink *string `json:"nextLink,omitempty"`
+}
+
+// InvoicesListResultIterator provides access to a complete listing of Invoice values.
+type InvoicesListResultIterator struct {
+	i    int
+	page InvoicesListResultPage
+}
+
+// Next advances to the next value.  If there was an error making
+// the request the iterator does not advance and the error is returned.
+func (iter *InvoicesListResultIterator) Next() error {
+	iter.i++
+	if iter.i < len(iter.page.Values()) {
+		return nil
+	}
+	err := iter.page.Next()
+	if err != nil {
+		iter.i--
+		return err
+	}
+	iter.i = 0
+	return nil
+}
+
+// NotDone returns true if the enumeration should be started or is not yet complete.
+func (iter InvoicesListResultIterator) NotDone() bool {
+	return iter.page.NotDone() && iter.i < len(iter.page.Values())
+}
+
+// Response returns the raw server response from the last page request.
+func (iter InvoicesListResultIterator) Response() InvoicesListResult {
+	return iter.page.Response()
+}
+
+// Value returns the current value or a zero-initialized value if the
+// iterator has advanced beyond the end of the collection.
+func (iter InvoicesListResultIterator) Value() Invoice {
+	if !iter.page.NotDone() {
+		return Invoice{}
+	}
+	return iter.page.Values()[iter.i]
+}
+
+// IsEmpty returns true if the ListResult contains no values.
+func (ilr InvoicesListResult) IsEmpty() bool {
+	return ilr.Value == nil || len(*ilr.Value) == 0
+}
+
+// invoicesListResultPreparer prepares a request to retrieve the next set of results.
+// It returns nil if no more results exist.
+func (ilr InvoicesListResult) invoicesListResultPreparer() (*http.Request, error) {
+	if ilr.NextLink == nil || len(to.String(ilr.NextLink)) < 1 {
+		return nil, nil
+	}
+	return autorest.Prepare(&http.Request{},
+		autorest.AsJSON(),
+		autorest.AsGet(),
+		autorest.WithBaseURL(to.String(ilr.NextLink)))
+}
+
+// InvoicesListResultPage contains a page of Invoice values.
+type InvoicesListResultPage struct {
+	fn  func(InvoicesListResult) (InvoicesListResult, error)
+	ilr InvoicesListResult
+}
+
+// Next advances to the next page of values.  If there was an error making
+// the request the page does not advance and the error is returned.
+func (page *InvoicesListResultPage) Next() error {
+	next, err := page.fn(page.ilr)
+	if err != nil {
+		return err
+	}
+	page.ilr = next
+	return nil
+}
+
+// NotDone returns true if the page enumeration should be started or is not yet complete.
+func (page InvoicesListResultPage) NotDone() bool {
+	return !page.ilr.IsEmpty()
+}
+
+// Response returns the raw server response from the last page request.
+func (page InvoicesListResultPage) Response() InvoicesListResult {
+	return page.ilr
+}
+
+// Values returns the slice of values for the current page or nil if there are no values.
+func (page InvoicesListResultPage) Values() []Invoice {
+	if page.ilr.IsEmpty() {
+		return nil
+	}
+	return *page.ilr.Value
+}
+
+// Operation a Billing REST API operation
+type Operation struct {
+	// Name - Operation name: {provider}/{resource}/{operation}
+	Name *string `json:"name,omitempty"`
+	// Display - The object that represents the operation.
+	Display *OperationDisplay `json:"display,omitempty"`
+}
+
+// OperationDisplay the object that represents the operation.
+type OperationDisplay struct {
+	// Provider - Service provider: Microsoft.Billing
+	Provider *string `json:"provider,omitempty"`
+	// Resource - Resource on which the operation is performed: Invoice, etc.
+	Resource *string `json:"resource,omitempty"`
+	// Operation - Operation type: Read, write, delete, etc.
+	Operation *string `json:"operation,omitempty"`
+}
+
+// OperationListResult result of the request to list billing operations. It contains a list of operations and a URL
+// link to get the next set of results.
+type OperationListResult struct {
+	autorest.Response `json:"-"`
+	// Value - List of billing operations supported by the Microsoft.Billing resource provider.
+	Value *[]Operation `json:"value,omitempty"`
+	// NextLink - URL to get the next set of operation list results if there are any.
+	NextLink *string `json:"nextLink,omitempty"`
+}
+
+// OperationListResultIterator provides access to a complete listing of Operation values.
+type OperationListResultIterator struct {
+	i    int
+	page OperationListResultPage
+}
+
+// Next advances to the next value.  If there was an error making
+// the request the iterator does not advance and the error is returned.
+func (iter *OperationListResultIterator) Next() error {
+	iter.i++
+	if iter.i < len(iter.page.Values()) {
+		return nil
+	}
+	err := iter.page.Next()
+	if err != nil {
+		iter.i--
+		return err
+	}
+	iter.i = 0
+	return nil
+}
+
+// NotDone returns true if the enumeration should be started or is not yet complete.
+func (iter OperationListResultIterator) NotDone() bool {
+	return iter.page.NotDone() && iter.i < len(iter.page.Values())
+}
+
+// Response returns the raw server response from the last page request.
+func (iter OperationListResultIterator) Response() OperationListResult {
+	return iter.page.Response()
+}
+
+// Value returns the current value or a zero-initialized value if the
+// iterator has advanced beyond the end of the collection.
+func (iter OperationListResultIterator) Value() Operation {
+	if !iter.page.NotDone() {
+		return Operation{}
+	}
+	return iter.page.Values()[iter.i]
+}
+
+// IsEmpty returns true if the ListResult contains no values.
+func (olr OperationListResult) IsEmpty() bool {
+	return olr.Value == nil || len(*olr.Value) == 0
+}
+
+// operationListResultPreparer prepares a request to retrieve the next set of results.
+// It returns nil if no more results exist.
+func (olr OperationListResult) operationListResultPreparer() (*http.Request, error) {
+	if olr.NextLink == nil || len(to.String(olr.NextLink)) < 1 {
+		return nil, nil
+	}
+	return autorest.Prepare(&http.Request{},
+		autorest.AsJSON(),
+		autorest.AsGet(),
+		autorest.WithBaseURL(to.String(olr.NextLink)))
+}
+
+// OperationListResultPage contains a page of Operation values.
+type OperationListResultPage struct {
+	fn  func(OperationListResult) (OperationListResult, error)
+	olr OperationListResult
+}
+
+// Next advances to the next page of values.  If there was an error making
+// the request the page does not advance and the error is returned.
+func (page *OperationListResultPage) Next() error {
+	next, err := page.fn(page.olr)
+	if err != nil {
+		return err
+	}
+	page.olr = next
+	return nil
+}
+
+// NotDone returns true if the page enumeration should be started or is not yet complete.
+func (page OperationListResultPage) NotDone() bool {
+	return !page.olr.IsEmpty()
+}
+
+// Response returns the raw server response from the last page request.
+func (page OperationListResultPage) Response() OperationListResult {
+	return page.olr
+}
+
+// Values returns the slice of values for the current page or nil if there are no values.
+func (page OperationListResultPage) Values() []Operation {
+	if page.olr.IsEmpty() {
+		return nil
+	}
+	return *page.olr.Value
+}
+
+// Resource the Resource model definition.
+type Resource struct {
+	// ID - Resource Id
+	ID *string `json:"id,omitempty"`
+	// Name - Resource name
+	Name *string `json:"name,omitempty"`
+	// Type - Resource type
+	Type *string `json:"type,omitempty"`
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-02-27-preview/billing/operations.go

@@ -0,0 +1,128 @@
+package billing
+
+// 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"
+	"net/http"
+)
+
+// OperationsClient is the billing client provides access to billing resources for Azure Web-Direct subscriptions.
+// Other subscription types which were not purchased directly through the Azure web portal are not supported through
+// this preview API.
+type OperationsClient struct {
+	BaseClient
+}
+
+// NewOperationsClient creates an instance of the OperationsClient client.
+func NewOperationsClient(subscriptionID string) OperationsClient {
+	return NewOperationsClientWithBaseURI(DefaultBaseURI, subscriptionID)
+}
+
+// NewOperationsClientWithBaseURI creates an instance of the OperationsClient client.
+func NewOperationsClientWithBaseURI(baseURI string, subscriptionID string) OperationsClient {
+	return OperationsClient{NewWithBaseURI(baseURI, subscriptionID)}
+}
+
+// List lists all of the available billing REST API operations.
+func (client OperationsClient) List(ctx context.Context) (result OperationListResultPage, err error) {
+	result.fn = client.listNextResults
+	req, err := client.ListPreparer(ctx)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "List", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.ListSender(req)
+	if err != nil {
+		result.olr.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "List", resp, "Failure sending request")
+		return
+	}
+
+	result.olr, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "List", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// ListPreparer prepares the List request.
+func (client OperationsClient) ListPreparer(ctx context.Context) (*http.Request, error) {
+	const APIVersion = "2017-02-27-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPath("/providers/Microsoft.Billing/operations"),
+		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 OperationsClient) ListSender(req *http.Request) (*http.Response, error) {
+	return autorest.SendWithSender(client, req,
+		autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
+}
+
+// ListResponder handles the response to the List request. The method always
+// closes the http.Response Body.
+func (client OperationsClient) ListResponder(resp *http.Response) (result OperationListResult, 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 OperationsClient) listNextResults(lastResults OperationListResult) (result OperationListResult, err error) {
+	req, err := lastResults.operationListResultPreparer()
+	if err != nil {
+		return result, autorest.NewErrorWithError(err, "billing.OperationsClient", "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, "billing.OperationsClient", "listNextResults", resp, "Failure sending next results request")
+	}
+	result, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "listNextResults", resp, "Failure responding to next results request")
+	}
+	return
+}
+
+// ListComplete enumerates all values, automatically crossing page boundaries as required.
+func (client OperationsClient) ListComplete(ctx context.Context) (result OperationListResultIterator, err error) {
+	result.page, err = client.List(ctx)
+	return
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-02-27-preview/billing/version.go

@@ -0,0 +1,28 @@
+package billing
+
+// 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.
+
+// UserAgent returns the UserAgent string to use when sending http.Requests.
+func UserAgent() string {
+	return "Azure-SDK-For-Go/v12.2.0-beta services"
+}
+
+// Version returns the semantic version (see http://semver.org) of the client.
+func Version() string {
+	return "v12.2.0-beta"
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-04-24-preview/billing/client.go

@@ -0,0 +1,52 @@
+// Package billing implements the Azure ARM Billing service API version 2017-04-24-preview.
+//
+// Billing client provides access to billing resources for Azure Web-Direct subscriptions. Other subscription types
+// which were not purchased directly through the Azure web portal are not supported through this preview API.
+package billing
+
+// 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 (
+	"github.com/Azure/go-autorest/autorest"
+)
+
+const (
+	// DefaultBaseURI is the default URI used for the service Billing
+	DefaultBaseURI = "https://management.azure.com"
+)
+
+// BaseClient is the base client for Billing.
+type BaseClient struct {
+	autorest.Client
+	BaseURI        string
+	SubscriptionID string
+}
+
+// New creates an instance of the BaseClient client.
+func New(subscriptionID string) BaseClient {
+	return NewWithBaseURI(DefaultBaseURI, subscriptionID)
+}
+
+// NewWithBaseURI creates an instance of the BaseClient client.
+func NewWithBaseURI(baseURI string, subscriptionID string) BaseClient {
+	return BaseClient{
+		Client:         autorest.NewClientWithUserAgent(UserAgent()),
+		BaseURI:        baseURI,
+		SubscriptionID: subscriptionID,
+	}
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-04-24-preview/billing/invoices.go

@@ -0,0 +1,293 @@
+package billing
+
+// 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"
+)
+
+// InvoicesClient is the billing client provides access to billing resources for Azure Web-Direct subscriptions. Other
+// subscription types which were not purchased directly through the Azure web portal are not supported through this
+// preview API.
+type InvoicesClient struct {
+	BaseClient
+}
+
+// NewInvoicesClient creates an instance of the InvoicesClient client.
+func NewInvoicesClient(subscriptionID string) InvoicesClient {
+	return NewInvoicesClientWithBaseURI(DefaultBaseURI, subscriptionID)
+}
+
+// NewInvoicesClientWithBaseURI creates an instance of the InvoicesClient client.
+func NewInvoicesClientWithBaseURI(baseURI string, subscriptionID string) InvoicesClient {
+	return InvoicesClient{NewWithBaseURI(baseURI, subscriptionID)}
+}
+
+// Get gets a named invoice resource. When getting a single invoice, the downloadUrl property is expanded
+// automatically.
+//
+// invoiceName is the name of an invoice resource.
+func (client InvoicesClient) Get(ctx context.Context, invoiceName string) (result Invoice, err error) {
+	req, err := client.GetPreparer(ctx, invoiceName)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "Get", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.GetSender(req)
+	if err != nil {
+		result.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "Get", resp, "Failure sending request")
+		return
+	}
+
+	result, err = client.GetResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "Get", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// GetPreparer prepares the Get request.
+func (client InvoicesClient) GetPreparer(ctx context.Context, invoiceName string) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"invoiceName":    autorest.Encode("path", invoiceName),
+		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-04-24-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/invoices/{invoiceName}", 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 InvoicesClient) 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 InvoicesClient) GetResponder(resp *http.Response) (result Invoice, err error) {
+	err = autorest.Respond(
+		resp,
+		client.ByInspecting(),
+		azure.WithErrorUnlessStatusCode(http.StatusOK),
+		autorest.ByUnmarshallingJSON(&result),
+		autorest.ByClosing())
+	result.Response = autorest.Response{Response: resp}
+	return
+}
+
+// GetLatest gets the most recent invoice. When getting a single invoice, the downloadUrl property is expanded
+// automatically.
+func (client InvoicesClient) GetLatest(ctx context.Context) (result Invoice, err error) {
+	req, err := client.GetLatestPreparer(ctx)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "GetLatest", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.GetLatestSender(req)
+	if err != nil {
+		result.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "GetLatest", resp, "Failure sending request")
+		return
+	}
+
+	result, err = client.GetLatestResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "GetLatest", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// GetLatestPreparer prepares the GetLatest request.
+func (client InvoicesClient) GetLatestPreparer(ctx context.Context) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-04-24-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/invoices/latest", pathParameters),
+		autorest.WithQueryParameters(queryParameters))
+	return preparer.Prepare((&http.Request{}).WithContext(ctx))
+}
+
+// GetLatestSender sends the GetLatest request. The method will close the
+// http.Response Body if it receives an error.
+func (client InvoicesClient) GetLatestSender(req *http.Request) (*http.Response, error) {
+	return autorest.SendWithSender(client, req,
+		azure.DoRetryWithRegistration(client.Client))
+}
+
+// GetLatestResponder handles the response to the GetLatest request. The method always
+// closes the http.Response Body.
+func (client InvoicesClient) GetLatestResponder(resp *http.Response) (result Invoice, err error) {
+	err = autorest.Respond(
+		resp,
+		client.ByInspecting(),
+		azure.WithErrorUnlessStatusCode(http.StatusOK),
+		autorest.ByUnmarshallingJSON(&result),
+		autorest.ByClosing())
+	result.Response = autorest.Response{Response: resp}
+	return
+}
+
+// List lists the available invoices for a subscription in reverse chronological order beginning with the most recent
+// invoice. In preview, invoices are available via this API only for invoice periods which end December 1, 2016 or
+// later.
+//
+// expand is may be used to expand the downloadUrl property within a list of invoices. This enables download links to
+// be generated for multiple invoices at once. By default, downloadURLs are not included when listing invoices. filter
+// is may be used to filter invoices by invoicePeriodEndDate. The filter supports 'eq', 'lt', 'gt', 'le', 'ge', and
+// 'and'. It does not currently support 'ne', 'or', or 'not'. skiptoken is skiptoken is only used if a previous
+// operation returned a partial result. If a previous response contains a nextLink element, the value of the nextLink
+// element will include a skiptoken parameter that specifies a starting point to use for subsequent calls. top is may
+// be used to limit the number of results to the most recent N invoices.
+func (client InvoicesClient) List(ctx context.Context, expand string, filter string, skiptoken string, top *int32) (result InvoicesListResultPage, err error) {
+	if err := validation.Validate([]validation.Validation{
+		{TargetValue: top,
+			Constraints: []validation.Constraint{{Target: "top", Name: validation.Null, Rule: false,
+				Chain: []validation.Constraint{{Target: "top", Name: validation.InclusiveMaximum, Rule: 100, Chain: nil},
+					{Target: "top", Name: validation.InclusiveMinimum, Rule: 1, Chain: nil},
+				}}}}}); err != nil {
+		return result, validation.NewErrorWithValidationError(err, "billing.InvoicesClient", "List")
+	}
+
+	result.fn = client.listNextResults
+	req, err := client.ListPreparer(ctx, expand, filter, skiptoken, top)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "List", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.ListSender(req)
+	if err != nil {
+		result.ilr.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "List", resp, "Failure sending request")
+		return
+	}
+
+	result.ilr, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "List", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// ListPreparer prepares the List request.
+func (client InvoicesClient) ListPreparer(ctx context.Context, expand string, filter string, skiptoken string, top *int32) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-04-24-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
+	if len(filter) > 0 {
+		queryParameters["$filter"] = autorest.Encode("query", filter)
+	}
+	if len(skiptoken) > 0 {
+		queryParameters["$skiptoken"] = autorest.Encode("query", skiptoken)
+	}
+	if top != nil {
+		queryParameters["$top"] = autorest.Encode("query", *top)
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/invoices", 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 InvoicesClient) 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 InvoicesClient) ListResponder(resp *http.Response) (result InvoicesListResult, 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 InvoicesClient) listNextResults(lastResults InvoicesListResult) (result InvoicesListResult, err error) {
+	req, err := lastResults.invoicesListResultPreparer()
+	if err != nil {
+		return result, autorest.NewErrorWithError(err, "billing.InvoicesClient", "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, "billing.InvoicesClient", "listNextResults", resp, "Failure sending next results request")
+	}
+	result, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.InvoicesClient", "listNextResults", resp, "Failure responding to next results request")
+	}
+	return
+}
+
+// ListComplete enumerates all values, automatically crossing page boundaries as required.
+func (client InvoicesClient) ListComplete(ctx context.Context, expand string, filter string, skiptoken string, top *int32) (result InvoicesListResultIterator, err error) {
+	result.page, err = client.List(ctx, expand, filter, skiptoken, top)
+	return
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-04-24-preview/billing/models.go

@@ -0,0 +1,538 @@
+package billing
+
+// 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 (
+	"encoding/json"
+	"github.com/Azure/go-autorest/autorest"
+	"github.com/Azure/go-autorest/autorest/date"
+	"github.com/Azure/go-autorest/autorest/to"
+	"net/http"
+)
+
+// DownloadURL a secure URL that can be used to download a PDF invoice until the URL expires.
+type DownloadURL struct {
+	// ExpiryTime - The time in UTC at which this download URL will expire.
+	ExpiryTime *date.Time `json:"expiryTime,omitempty"`
+	// URL - The URL to the PDF file.
+	URL *string `json:"url,omitempty"`
+}
+
+// ErrorDetails the details of the error.
+type ErrorDetails struct {
+	// Code - Error code.
+	Code *string `json:"code,omitempty"`
+	// Message - Error message indicating why the operation failed.
+	Message *string `json:"message,omitempty"`
+	// Target - The target of the particular error.
+	Target *string `json:"target,omitempty"`
+}
+
+// ErrorResponse error response indicates that the service is not able to process the incoming request. The reason is
+// provided in the error message.
+type ErrorResponse struct {
+	// Error - The details of the error.
+	Error *ErrorDetails `json:"error,omitempty"`
+}
+
+// Invoice an invoice resource can be used download a PDF version of an invoice.
+type Invoice struct {
+	autorest.Response `json:"-"`
+	// ID - Resource Id.
+	ID *string `json:"id,omitempty"`
+	// Name - Resource name.
+	Name *string `json:"name,omitempty"`
+	// Type - Resource type.
+	Type               *string `json:"type,omitempty"`
+	*InvoiceProperties `json:"properties,omitempty"`
+}
+
+// UnmarshalJSON is the custom unmarshaler for Invoice struct.
+func (i *Invoice) UnmarshalJSON(body []byte) error {
+	var m map[string]*json.RawMessage
+	err := json.Unmarshal(body, &m)
+	if err != nil {
+		return err
+	}
+	var v *json.RawMessage
+
+	v = m["properties"]
+	if v != nil {
+		var properties InvoiceProperties
+		err = json.Unmarshal(*m["properties"], &properties)
+		if err != nil {
+			return err
+		}
+		i.InvoiceProperties = &properties
+	}
+
+	v = m["id"]
+	if v != nil {
+		var ID string
+		err = json.Unmarshal(*m["id"], &ID)
+		if err != nil {
+			return err
+		}
+		i.ID = &ID
+	}
+
+	v = m["name"]
+	if v != nil {
+		var name string
+		err = json.Unmarshal(*m["name"], &name)
+		if err != nil {
+			return err
+		}
+		i.Name = &name
+	}
+
+	v = m["type"]
+	if v != nil {
+		var typeVar string
+		err = json.Unmarshal(*m["type"], &typeVar)
+		if err != nil {
+			return err
+		}
+		i.Type = &typeVar
+	}
+
+	return nil
+}
+
+// InvoiceProperties the properties of the invoice.
+type InvoiceProperties struct {
+	// DownloadURL - A secure link to download the PDF version of an invoice. The link will cease to work after its expiry time is reached.
+	DownloadURL *DownloadURL `json:"downloadUrl,omitempty"`
+	// InvoicePeriodStartDate - The start of the date range covered by the invoice.
+	InvoicePeriodStartDate *date.Date `json:"invoicePeriodStartDate,omitempty"`
+	// InvoicePeriodEndDate - The end of the date range covered by the invoice.
+	InvoicePeriodEndDate *date.Date `json:"invoicePeriodEndDate,omitempty"`
+	// BillingPeriodIds - Array of billing perdiod ids that the invoice is attributed to.
+	BillingPeriodIds *[]string `json:"billingPeriodIds,omitempty"`
+}
+
+// InvoicesListResult result of listing invoices. It contains a list of available invoices in reverse chronological
+// order.
+type InvoicesListResult struct {
+	autorest.Response `json:"-"`
+	// Value - The list of invoices.
+	Value *[]Invoice `json:"value,omitempty"`
+	// NextLink - The link (url) to the next page of results.
+	NextLink *string `json:"nextLink,omitempty"`
+}
+
+// InvoicesListResultIterator provides access to a complete listing of Invoice values.
+type InvoicesListResultIterator struct {
+	i    int
+	page InvoicesListResultPage
+}
+
+// Next advances to the next value.  If there was an error making
+// the request the iterator does not advance and the error is returned.
+func (iter *InvoicesListResultIterator) Next() error {
+	iter.i++
+	if iter.i < len(iter.page.Values()) {
+		return nil
+	}
+	err := iter.page.Next()
+	if err != nil {
+		iter.i--
+		return err
+	}
+	iter.i = 0
+	return nil
+}
+
+// NotDone returns true if the enumeration should be started or is not yet complete.
+func (iter InvoicesListResultIterator) NotDone() bool {
+	return iter.page.NotDone() && iter.i < len(iter.page.Values())
+}
+
+// Response returns the raw server response from the last page request.
+func (iter InvoicesListResultIterator) Response() InvoicesListResult {
+	return iter.page.Response()
+}
+
+// Value returns the current value or a zero-initialized value if the
+// iterator has advanced beyond the end of the collection.
+func (iter InvoicesListResultIterator) Value() Invoice {
+	if !iter.page.NotDone() {
+		return Invoice{}
+	}
+	return iter.page.Values()[iter.i]
+}
+
+// IsEmpty returns true if the ListResult contains no values.
+func (ilr InvoicesListResult) IsEmpty() bool {
+	return ilr.Value == nil || len(*ilr.Value) == 0
+}
+
+// invoicesListResultPreparer prepares a request to retrieve the next set of results.
+// It returns nil if no more results exist.
+func (ilr InvoicesListResult) invoicesListResultPreparer() (*http.Request, error) {
+	if ilr.NextLink == nil || len(to.String(ilr.NextLink)) < 1 {
+		return nil, nil
+	}
+	return autorest.Prepare(&http.Request{},
+		autorest.AsJSON(),
+		autorest.AsGet(),
+		autorest.WithBaseURL(to.String(ilr.NextLink)))
+}
+
+// InvoicesListResultPage contains a page of Invoice values.
+type InvoicesListResultPage struct {
+	fn  func(InvoicesListResult) (InvoicesListResult, error)
+	ilr InvoicesListResult
+}
+
+// Next advances to the next page of values.  If there was an error making
+// the request the page does not advance and the error is returned.
+func (page *InvoicesListResultPage) Next() error {
+	next, err := page.fn(page.ilr)
+	if err != nil {
+		return err
+	}
+	page.ilr = next
+	return nil
+}
+
+// NotDone returns true if the page enumeration should be started or is not yet complete.
+func (page InvoicesListResultPage) NotDone() bool {
+	return !page.ilr.IsEmpty()
+}
+
+// Response returns the raw server response from the last page request.
+func (page InvoicesListResultPage) Response() InvoicesListResult {
+	return page.ilr
+}
+
+// Values returns the slice of values for the current page or nil if there are no values.
+func (page InvoicesListResultPage) Values() []Invoice {
+	if page.ilr.IsEmpty() {
+		return nil
+	}
+	return *page.ilr.Value
+}
+
+// Operation a Billing REST API operation.
+type Operation struct {
+	// Name - Operation name: {provider}/{resource}/{operation}.
+	Name *string `json:"name,omitempty"`
+	// Display - The object that represents the operation.
+	Display *OperationDisplay `json:"display,omitempty"`
+}
+
+// OperationDisplay the object that represents the operation.
+type OperationDisplay struct {
+	// Provider - Service provider: Microsoft.Billing.
+	Provider *string `json:"provider,omitempty"`
+	// Resource - Resource on which the operation is performed: Invoice, etc.
+	Resource *string `json:"resource,omitempty"`
+	// Operation - Operation type: Read, write, delete, etc.
+	Operation *string `json:"operation,omitempty"`
+}
+
+// OperationListResult result listing billing operations. It contains a list of operations and a URL link to get the
+// next set of results.
+type OperationListResult struct {
+	autorest.Response `json:"-"`
+	// Value - List of billing operations supported by the Microsoft.Billing resource provider.
+	Value *[]Operation `json:"value,omitempty"`
+	// NextLink - URL to get the next set of operation list results if there are any.
+	NextLink *string `json:"nextLink,omitempty"`
+}
+
+// OperationListResultIterator provides access to a complete listing of Operation values.
+type OperationListResultIterator struct {
+	i    int
+	page OperationListResultPage
+}
+
+// Next advances to the next value.  If there was an error making
+// the request the iterator does not advance and the error is returned.
+func (iter *OperationListResultIterator) Next() error {
+	iter.i++
+	if iter.i < len(iter.page.Values()) {
+		return nil
+	}
+	err := iter.page.Next()
+	if err != nil {
+		iter.i--
+		return err
+	}
+	iter.i = 0
+	return nil
+}
+
+// NotDone returns true if the enumeration should be started or is not yet complete.
+func (iter OperationListResultIterator) NotDone() bool {
+	return iter.page.NotDone() && iter.i < len(iter.page.Values())
+}
+
+// Response returns the raw server response from the last page request.
+func (iter OperationListResultIterator) Response() OperationListResult {
+	return iter.page.Response()
+}
+
+// Value returns the current value or a zero-initialized value if the
+// iterator has advanced beyond the end of the collection.
+func (iter OperationListResultIterator) Value() Operation {
+	if !iter.page.NotDone() {
+		return Operation{}
+	}
+	return iter.page.Values()[iter.i]
+}
+
+// IsEmpty returns true if the ListResult contains no values.
+func (olr OperationListResult) IsEmpty() bool {
+	return olr.Value == nil || len(*olr.Value) == 0
+}
+
+// operationListResultPreparer prepares a request to retrieve the next set of results.
+// It returns nil if no more results exist.
+func (olr OperationListResult) operationListResultPreparer() (*http.Request, error) {
+	if olr.NextLink == nil || len(to.String(olr.NextLink)) < 1 {
+		return nil, nil
+	}
+	return autorest.Prepare(&http.Request{},
+		autorest.AsJSON(),
+		autorest.AsGet(),
+		autorest.WithBaseURL(to.String(olr.NextLink)))
+}
+
+// OperationListResultPage contains a page of Operation values.
+type OperationListResultPage struct {
+	fn  func(OperationListResult) (OperationListResult, error)
+	olr OperationListResult
+}
+
+// Next advances to the next page of values.  If there was an error making
+// the request the page does not advance and the error is returned.
+func (page *OperationListResultPage) Next() error {
+	next, err := page.fn(page.olr)
+	if err != nil {
+		return err
+	}
+	page.olr = next
+	return nil
+}
+
+// NotDone returns true if the page enumeration should be started or is not yet complete.
+func (page OperationListResultPage) NotDone() bool {
+	return !page.olr.IsEmpty()
+}
+
+// Response returns the raw server response from the last page request.
+func (page OperationListResultPage) Response() OperationListResult {
+	return page.olr
+}
+
+// Values returns the slice of values for the current page or nil if there are no values.
+func (page OperationListResultPage) Values() []Operation {
+	if page.olr.IsEmpty() {
+		return nil
+	}
+	return *page.olr.Value
+}
+
+// Period a billing period resource.
+type Period struct {
+	autorest.Response `json:"-"`
+	// ID - Resource Id.
+	ID *string `json:"id,omitempty"`
+	// Name - Resource name.
+	Name *string `json:"name,omitempty"`
+	// Type - Resource type.
+	Type              *string `json:"type,omitempty"`
+	*PeriodProperties `json:"properties,omitempty"`
+}
+
+// UnmarshalJSON is the custom unmarshaler for Period struct.
+func (p *Period) UnmarshalJSON(body []byte) error {
+	var m map[string]*json.RawMessage
+	err := json.Unmarshal(body, &m)
+	if err != nil {
+		return err
+	}
+	var v *json.RawMessage
+
+	v = m["properties"]
+	if v != nil {
+		var properties PeriodProperties
+		err = json.Unmarshal(*m["properties"], &properties)
+		if err != nil {
+			return err
+		}
+		p.PeriodProperties = &properties
+	}
+
+	v = m["id"]
+	if v != nil {
+		var ID string
+		err = json.Unmarshal(*m["id"], &ID)
+		if err != nil {
+			return err
+		}
+		p.ID = &ID
+	}
+
+	v = m["name"]
+	if v != nil {
+		var name string
+		err = json.Unmarshal(*m["name"], &name)
+		if err != nil {
+			return err
+		}
+		p.Name = &name
+	}
+
+	v = m["type"]
+	if v != nil {
+		var typeVar string
+		err = json.Unmarshal(*m["type"], &typeVar)
+		if err != nil {
+			return err
+		}
+		p.Type = &typeVar
+	}
+
+	return nil
+}
+
+// PeriodProperties the properties of the billing period.
+type PeriodProperties struct {
+	// BillingPeriodStartDate - The start of the date range covered by the billing period.
+	BillingPeriodStartDate *date.Date `json:"billingPeriodStartDate,omitempty"`
+	// BillingPeriodEndDate - The end of the date range covered by the billing period.
+	BillingPeriodEndDate *date.Date `json:"billingPeriodEndDate,omitempty"`
+	// InvoiceIds - Array of invoice ids that associated with.
+	InvoiceIds *[]string `json:"invoiceIds,omitempty"`
+}
+
+// PeriodsListResult result of listing billing periods. It contains a list of available billing periods in reverse
+// chronological order.
+type PeriodsListResult struct {
+	autorest.Response `json:"-"`
+	// Value - The list of billing periods.
+	Value *[]Period `json:"value,omitempty"`
+	// NextLink - The link (url) to the next page of results.
+	NextLink *string `json:"nextLink,omitempty"`
+}
+
+// PeriodsListResultIterator provides access to a complete listing of Period values.
+type PeriodsListResultIterator struct {
+	i    int
+	page PeriodsListResultPage
+}
+
+// Next advances to the next value.  If there was an error making
+// the request the iterator does not advance and the error is returned.
+func (iter *PeriodsListResultIterator) Next() error {
+	iter.i++
+	if iter.i < len(iter.page.Values()) {
+		return nil
+	}
+	err := iter.page.Next()
+	if err != nil {
+		iter.i--
+		return err
+	}
+	iter.i = 0
+	return nil
+}
+
+// NotDone returns true if the enumeration should be started or is not yet complete.
+func (iter PeriodsListResultIterator) NotDone() bool {
+	return iter.page.NotDone() && iter.i < len(iter.page.Values())
+}
+
+// Response returns the raw server response from the last page request.
+func (iter PeriodsListResultIterator) Response() PeriodsListResult {
+	return iter.page.Response()
+}
+
+// Value returns the current value or a zero-initialized value if the
+// iterator has advanced beyond the end of the collection.
+func (iter PeriodsListResultIterator) Value() Period {
+	if !iter.page.NotDone() {
+		return Period{}
+	}
+	return iter.page.Values()[iter.i]
+}
+
+// IsEmpty returns true if the ListResult contains no values.
+func (plr PeriodsListResult) IsEmpty() bool {
+	return plr.Value == nil || len(*plr.Value) == 0
+}
+
+// periodsListResultPreparer prepares a request to retrieve the next set of results.
+// It returns nil if no more results exist.
+func (plr PeriodsListResult) periodsListResultPreparer() (*http.Request, error) {
+	if plr.NextLink == nil || len(to.String(plr.NextLink)) < 1 {
+		return nil, nil
+	}
+	return autorest.Prepare(&http.Request{},
+		autorest.AsJSON(),
+		autorest.AsGet(),
+		autorest.WithBaseURL(to.String(plr.NextLink)))
+}
+
+// PeriodsListResultPage contains a page of Period values.
+type PeriodsListResultPage struct {
+	fn  func(PeriodsListResult) (PeriodsListResult, error)
+	plr PeriodsListResult
+}
+
+// Next advances to the next page of values.  If there was an error making
+// the request the page does not advance and the error is returned.
+func (page *PeriodsListResultPage) Next() error {
+	next, err := page.fn(page.plr)
+	if err != nil {
+		return err
+	}
+	page.plr = next
+	return nil
+}
+
+// NotDone returns true if the page enumeration should be started or is not yet complete.
+func (page PeriodsListResultPage) NotDone() bool {
+	return !page.plr.IsEmpty()
+}
+
+// Response returns the raw server response from the last page request.
+func (page PeriodsListResultPage) Response() PeriodsListResult {
+	return page.plr
+}
+
+// Values returns the slice of values for the current page or nil if there are no values.
+func (page PeriodsListResultPage) Values() []Period {
+	if page.plr.IsEmpty() {
+		return nil
+	}
+	return *page.plr.Value
+}
+
+// Resource the Resource model definition.
+type Resource struct {
+	// ID - Resource Id.
+	ID *string `json:"id,omitempty"`
+	// Name - Resource name.
+	Name *string `json:"name,omitempty"`
+	// Type - Resource type.
+	Type *string `json:"type,omitempty"`
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-04-24-preview/billing/operations.go

@@ -0,0 +1,128 @@
+package billing
+
+// 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"
+	"net/http"
+)
+
+// OperationsClient is the billing client provides access to billing resources for Azure Web-Direct subscriptions.
+// Other subscription types which were not purchased directly through the Azure web portal are not supported through
+// this preview API.
+type OperationsClient struct {
+	BaseClient
+}
+
+// NewOperationsClient creates an instance of the OperationsClient client.
+func NewOperationsClient(subscriptionID string) OperationsClient {
+	return NewOperationsClientWithBaseURI(DefaultBaseURI, subscriptionID)
+}
+
+// NewOperationsClientWithBaseURI creates an instance of the OperationsClient client.
+func NewOperationsClientWithBaseURI(baseURI string, subscriptionID string) OperationsClient {
+	return OperationsClient{NewWithBaseURI(baseURI, subscriptionID)}
+}
+
+// List lists all of the available billing REST API operations.
+func (client OperationsClient) List(ctx context.Context) (result OperationListResultPage, err error) {
+	result.fn = client.listNextResults
+	req, err := client.ListPreparer(ctx)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "List", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.ListSender(req)
+	if err != nil {
+		result.olr.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "List", resp, "Failure sending request")
+		return
+	}
+
+	result.olr, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "List", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// ListPreparer prepares the List request.
+func (client OperationsClient) ListPreparer(ctx context.Context) (*http.Request, error) {
+	const APIVersion = "2017-04-24-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPath("/providers/Microsoft.Billing/operations"),
+		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 OperationsClient) ListSender(req *http.Request) (*http.Response, error) {
+	return autorest.SendWithSender(client, req,
+		autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...))
+}
+
+// ListResponder handles the response to the List request. The method always
+// closes the http.Response Body.
+func (client OperationsClient) ListResponder(resp *http.Response) (result OperationListResult, 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 OperationsClient) listNextResults(lastResults OperationListResult) (result OperationListResult, err error) {
+	req, err := lastResults.operationListResultPreparer()
+	if err != nil {
+		return result, autorest.NewErrorWithError(err, "billing.OperationsClient", "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, "billing.OperationsClient", "listNextResults", resp, "Failure sending next results request")
+	}
+	result, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.OperationsClient", "listNextResults", resp, "Failure responding to next results request")
+	}
+	return
+}
+
+// ListComplete enumerates all values, automatically crossing page boundaries as required.
+func (client OperationsClient) ListComplete(ctx context.Context) (result OperationListResultIterator, err error) {
+	result.page, err = client.List(ctx)
+	return
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-04-24-preview/billing/periods.go

@@ -0,0 +1,222 @@
+package billing
+
+// 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"
+)
+
+// PeriodsClient is the billing client provides access to billing resources for Azure Web-Direct subscriptions. Other
+// subscription types which were not purchased directly through the Azure web portal are not supported through this
+// preview API.
+type PeriodsClient struct {
+	BaseClient
+}
+
+// NewPeriodsClient creates an instance of the PeriodsClient client.
+func NewPeriodsClient(subscriptionID string) PeriodsClient {
+	return NewPeriodsClientWithBaseURI(DefaultBaseURI, subscriptionID)
+}
+
+// NewPeriodsClientWithBaseURI creates an instance of the PeriodsClient client.
+func NewPeriodsClientWithBaseURI(baseURI string, subscriptionID string) PeriodsClient {
+	return PeriodsClient{NewWithBaseURI(baseURI, subscriptionID)}
+}
+
+// Get gets a named billing period.
+//
+// billingPeriodName is the name of a BillingPeriod resource.
+func (client PeriodsClient) Get(ctx context.Context, billingPeriodName string) (result Period, err error) {
+	req, err := client.GetPreparer(ctx, billingPeriodName)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.PeriodsClient", "Get", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.GetSender(req)
+	if err != nil {
+		result.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.PeriodsClient", "Get", resp, "Failure sending request")
+		return
+	}
+
+	result, err = client.GetResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.PeriodsClient", "Get", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// GetPreparer prepares the Get request.
+func (client PeriodsClient) GetPreparer(ctx context.Context, billingPeriodName string) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"billingPeriodName": autorest.Encode("path", billingPeriodName),
+		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-04-24-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/billingPeriods/{billingPeriodName}", 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 PeriodsClient) 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 PeriodsClient) GetResponder(resp *http.Response) (result Period, err error) {
+	err = autorest.Respond(
+		resp,
+		client.ByInspecting(),
+		azure.WithErrorUnlessStatusCode(http.StatusOK),
+		autorest.ByUnmarshallingJSON(&result),
+		autorest.ByClosing())
+	result.Response = autorest.Response{Response: resp}
+	return
+}
+
+// List lists the available billing periods for a subscription in reverse chronological order.
+//
+// filter is may be used to filter billing periods by billingPeriodEndDate. The filter supports 'eq', 'lt', 'gt', 'le',
+// 'ge', and 'and'. It does not currently support 'ne', 'or', or 'not'. skiptoken is skiptoken is only used if a
+// previous operation returned a partial result. If a previous response contains a nextLink element, the value of the
+// nextLink element will include a skiptoken parameter that specifies a starting point to use for subsequent calls. top
+// is may be used to limit the number of results to the most recent N billing periods.
+func (client PeriodsClient) List(ctx context.Context, filter string, skiptoken string, top *int32) (result PeriodsListResultPage, err error) {
+	if err := validation.Validate([]validation.Validation{
+		{TargetValue: top,
+			Constraints: []validation.Constraint{{Target: "top", Name: validation.Null, Rule: false,
+				Chain: []validation.Constraint{{Target: "top", Name: validation.InclusiveMaximum, Rule: 100, Chain: nil},
+					{Target: "top", Name: validation.InclusiveMinimum, Rule: 1, Chain: nil},
+				}}}}}); err != nil {
+		return result, validation.NewErrorWithValidationError(err, "billing.PeriodsClient", "List")
+	}
+
+	result.fn = client.listNextResults
+	req, err := client.ListPreparer(ctx, filter, skiptoken, top)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.PeriodsClient", "List", nil, "Failure preparing request")
+		return
+	}
+
+	resp, err := client.ListSender(req)
+	if err != nil {
+		result.plr.Response = autorest.Response{Response: resp}
+		err = autorest.NewErrorWithError(err, "billing.PeriodsClient", "List", resp, "Failure sending request")
+		return
+	}
+
+	result.plr, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.PeriodsClient", "List", resp, "Failure responding to request")
+	}
+
+	return
+}
+
+// ListPreparer prepares the List request.
+func (client PeriodsClient) ListPreparer(ctx context.Context, filter string, skiptoken string, top *int32) (*http.Request, error) {
+	pathParameters := map[string]interface{}{
+		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
+	}
+
+	const APIVersion = "2017-04-24-preview"
+	queryParameters := map[string]interface{}{
+		"api-version": APIVersion,
+	}
+	if len(filter) > 0 {
+		queryParameters["$filter"] = autorest.Encode("query", filter)
+	}
+	if len(skiptoken) > 0 {
+		queryParameters["$skiptoken"] = autorest.Encode("query", skiptoken)
+	}
+	if top != nil {
+		queryParameters["$top"] = autorest.Encode("query", *top)
+	}
+
+	preparer := autorest.CreatePreparer(
+		autorest.AsGet(),
+		autorest.WithBaseURL(client.BaseURI),
+		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Billing/billingPeriods", 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 PeriodsClient) 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 PeriodsClient) ListResponder(resp *http.Response) (result PeriodsListResult, 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 PeriodsClient) listNextResults(lastResults PeriodsListResult) (result PeriodsListResult, err error) {
+	req, err := lastResults.periodsListResultPreparer()
+	if err != nil {
+		return result, autorest.NewErrorWithError(err, "billing.PeriodsClient", "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, "billing.PeriodsClient", "listNextResults", resp, "Failure sending next results request")
+	}
+	result, err = client.ListResponder(resp)
+	if err != nil {
+		err = autorest.NewErrorWithError(err, "billing.PeriodsClient", "listNextResults", resp, "Failure responding to next results request")
+	}
+	return
+}
+
+// ListComplete enumerates all values, automatically crossing page boundaries as required.
+func (client PeriodsClient) ListComplete(ctx context.Context, filter string, skiptoken string, top *int32) (result PeriodsListResultIterator, err error) {
+	result.page, err = client.List(ctx, filter, skiptoken, top)
+	return
+}

vendor/github.com/Azure/azure-sdk-for-go/services/billing/mgmt/2017-04-24-preview/billing/version.go

@@ -0,0 +1,28 @@
+package billing
+
+// 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.
+
+// UserAgent returns the UserAgent string to use when sending http.Requests.
+func UserAgent() string {
+	return "Azure-SDK-For-Go/v12.2.0-beta services"
+}
+
+// Version returns the semantic version (see http://semver.org) of the client.
+func Version() string {
+	return "v12.2.0-beta"
+}