201 lines
6 KiB
Go
201 lines
6 KiB
Go
|
// Copyright 2017 Microsoft Corporation
|
||
|
//
|
||
|
// 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.
|
||
|
|
||
|
package azure
|
||
|
|
||
|
import (
|
||
|
"errors"
|
||
|
"fmt"
|
||
|
"net/http"
|
||
|
"net/url"
|
||
|
"strings"
|
||
|
"time"
|
||
|
|
||
|
"github.com/Azure/go-autorest/autorest"
|
||
|
)
|
||
|
|
||
|
// DoRetryWithRegistration tries to register the resource provider in case it is unregistered.
|
||
|
// It also handles request retries
|
||
|
func DoRetryWithRegistration(client autorest.Client) autorest.SendDecorator {
|
||
|
return func(s autorest.Sender) autorest.Sender {
|
||
|
return autorest.SenderFunc(func(r *http.Request) (resp *http.Response, err error) {
|
||
|
rr := autorest.NewRetriableRequest(r)
|
||
|
for currentAttempt := 0; currentAttempt < client.RetryAttempts; currentAttempt++ {
|
||
|
err = rr.Prepare()
|
||
|
if err != nil {
|
||
|
return resp, err
|
||
|
}
|
||
|
|
||
|
resp, err = autorest.SendWithSender(s, rr.Request(),
|
||
|
autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...),
|
||
|
)
|
||
|
if err != nil {
|
||
|
return resp, err
|
||
|
}
|
||
|
|
||
|
if resp.StatusCode != http.StatusConflict || client.SkipResourceProviderRegistration {
|
||
|
return resp, err
|
||
|
}
|
||
|
var re RequestError
|
||
|
err = autorest.Respond(
|
||
|
resp,
|
||
|
autorest.ByUnmarshallingJSON(&re),
|
||
|
)
|
||
|
if err != nil {
|
||
|
return resp, err
|
||
|
}
|
||
|
err = re
|
||
|
|
||
|
if re.ServiceError != nil && re.ServiceError.Code == "MissingSubscriptionRegistration" {
|
||
|
regErr := register(client, r, re)
|
||
|
if regErr != nil {
|
||
|
return resp, fmt.Errorf("failed auto registering Resource Provider: %s. Original error: %s", regErr, err)
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return resp, fmt.Errorf("failed request: %s", err)
|
||
|
})
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func getProvider(re RequestError) (string, error) {
|
||
|
if re.ServiceError != nil && len(re.ServiceError.Details) > 0 {
|
||
|
return re.ServiceError.Details[0]["target"].(string), nil
|
||
|
}
|
||
|
return "", errors.New("provider was not found in the response")
|
||
|
}
|
||
|
|
||
|
func register(client autorest.Client, originalReq *http.Request, re RequestError) error {
|
||
|
subID := getSubscription(originalReq.URL.Path)
|
||
|
if subID == "" {
|
||
|
return errors.New("missing parameter subscriptionID to register resource provider")
|
||
|
}
|
||
|
providerName, err := getProvider(re)
|
||
|
if err != nil {
|
||
|
return fmt.Errorf("missing parameter provider to register resource provider: %s", err)
|
||
|
}
|
||
|
newURL := url.URL{
|
||
|
Scheme: originalReq.URL.Scheme,
|
||
|
Host: originalReq.URL.Host,
|
||
|
}
|
||
|
|
||
|
// taken from the resources SDK
|
||
|
// with almost identical code, this sections are easier to mantain
|
||
|
// It is also not a good idea to import the SDK here
|
||
|
// https://github.com/Azure/azure-sdk-for-go/blob/9f366792afa3e0ddaecdc860e793ba9d75e76c27/arm/resources/resources/providers.go#L252
|
||
|
pathParameters := map[string]interface{}{
|
||
|
"resourceProviderNamespace": autorest.Encode("path", providerName),
|
||
|
"subscriptionId": autorest.Encode("path", subID),
|
||
|
}
|
||
|
|
||
|
const APIVersion = "2016-09-01"
|
||
|
queryParameters := map[string]interface{}{
|
||
|
"api-version": APIVersion,
|
||
|
}
|
||
|
|
||
|
preparer := autorest.CreatePreparer(
|
||
|
autorest.AsPost(),
|
||
|
autorest.WithBaseURL(newURL.String()),
|
||
|
autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/{resourceProviderNamespace}/register", pathParameters),
|
||
|
autorest.WithQueryParameters(queryParameters),
|
||
|
)
|
||
|
|
||
|
req, err := preparer.Prepare(&http.Request{})
|
||
|
if err != nil {
|
||
|
return err
|
||
|
}
|
||
|
req = req.WithContext(originalReq.Context())
|
||
|
|
||
|
resp, err := autorest.SendWithSender(client, req,
|
||
|
autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...),
|
||
|
)
|
||
|
if err != nil {
|
||
|
return err
|
||
|
}
|
||
|
|
||
|
type Provider struct {
|
||
|
RegistrationState *string `json:"registrationState,omitempty"`
|
||
|
}
|
||
|
var provider Provider
|
||
|
|
||
|
err = autorest.Respond(
|
||
|
resp,
|
||
|
WithErrorUnlessStatusCode(http.StatusOK),
|
||
|
autorest.ByUnmarshallingJSON(&provider),
|
||
|
autorest.ByClosing(),
|
||
|
)
|
||
|
if err != nil {
|
||
|
return err
|
||
|
}
|
||
|
|
||
|
// poll for registered provisioning state
|
||
|
now := time.Now()
|
||
|
for err == nil && time.Since(now) < client.PollingDuration {
|
||
|
// taken from the resources SDK
|
||
|
// https://github.com/Azure/azure-sdk-for-go/blob/9f366792afa3e0ddaecdc860e793ba9d75e76c27/arm/resources/resources/providers.go#L45
|
||
|
preparer := autorest.CreatePreparer(
|
||
|
autorest.AsGet(),
|
||
|
autorest.WithBaseURL(newURL.String()),
|
||
|
autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/{resourceProviderNamespace}", pathParameters),
|
||
|
autorest.WithQueryParameters(queryParameters),
|
||
|
)
|
||
|
req, err = preparer.Prepare(&http.Request{})
|
||
|
if err != nil {
|
||
|
return err
|
||
|
}
|
||
|
req = req.WithContext(originalReq.Context())
|
||
|
|
||
|
resp, err := autorest.SendWithSender(client, req,
|
||
|
autorest.DoRetryForStatusCodes(client.RetryAttempts, client.RetryDuration, autorest.StatusCodesForRetry...),
|
||
|
)
|
||
|
if err != nil {
|
||
|
return err
|
||
|
}
|
||
|
|
||
|
err = autorest.Respond(
|
||
|
resp,
|
||
|
WithErrorUnlessStatusCode(http.StatusOK),
|
||
|
autorest.ByUnmarshallingJSON(&provider),
|
||
|
autorest.ByClosing(),
|
||
|
)
|
||
|
if err != nil {
|
||
|
return err
|
||
|
}
|
||
|
|
||
|
if provider.RegistrationState != nil &&
|
||
|
*provider.RegistrationState == "Registered" {
|
||
|
break
|
||
|
}
|
||
|
|
||
|
delayed := autorest.DelayWithRetryAfter(resp, originalReq.Context().Done())
|
||
|
if !delayed && !autorest.DelayForBackoff(client.PollingDelay, 0, originalReq.Context().Done()) {
|
||
|
return originalReq.Context().Err()
|
||
|
}
|
||
|
}
|
||
|
if !(time.Since(now) < client.PollingDuration) {
|
||
|
return errors.New("polling for resource provider registration has exceeded the polling duration")
|
||
|
}
|
||
|
return err
|
||
|
}
|
||
|
|
||
|
func getSubscription(path string) string {
|
||
|
parts := strings.Split(path, "/")
|
||
|
for i, v := range parts {
|
||
|
if v == "subscriptions" && (i+1) < len(parts) {
|
||
|
return parts[i+1]
|
||
|
}
|
||
|
}
|
||
|
return ""
|
||
|
}
|