// DoPollForAsynchronous returns a SendDecorator that polls if the http.Response is for an Azure
// long-running operation. It will delay between requests for the duration specified in the
// RetryAfter header or, if the header is absent, the passed delay. Polling may be canceled by
// closing the optional channel on the http.Request.
func DoPollForAsynchronous(delay time.Duration) autorest.SendDecorator {
return func(s autorest.Sender) autorest.Sender {
return autorest.SenderFunc(func(r *http.Request) (resp *http.Response, err error) {
resp, err = s.Do(r)
if err != nil {
return resp, err
}
ps := pollingState{}
for err == nil {
err = updatePollingState(resp, &ps)
if err != nil {
break
}
if ps.hasTerminated() {
if !ps.hasSucceeded() {
err = ps
}
break
}
r, err = newPollingRequest(resp, ps)
if err != nil {
return resp, err
}
resp, err = autorest.SendWithSender(s, r,
autorest.AfterDelay(autorest.GetRetryAfter(resp, delay)))
}
return resp, err
})
}
}
// DoPollForAsynchronous returns a SendDecorator that polls if the http.Response is for an Azure
// long-running operation. It will poll until the time passed is equal to or greater than
// the supplied duration. It will delay between requests for the duration specified in the
// RetryAfter header or, if the header is absent, the passed delay. Polling may be canceled by
// closing the optional channel on the http.Request.
func DoPollForAsynchronous(duration time.Duration, delay time.Duration) autorest.SendDecorator {
return func(s autorest.Sender) autorest.Sender {
return autorest.SenderFunc(func(r *http.Request) (resp *http.Response, err error) {
resp, err = s.Do(r)
if err != nil || !IsAsynchronousResponse(resp) {
return resp, err
}
r, err = NewOperationResourceRequest(resp, r.Cancel)
if err != nil {
return resp, autorest.NewErrorWithError(err, "azure", "DoPollForAsynchronous", resp, "Failure occurred creating OperationResource request")
}
or := &OperationResource{}
for err == nil && !or.HasTerminated() {
autorest.Respond(resp,
autorest.ByClosing())
resp, err = autorest.SendWithSender(s, r,
autorest.AfterDelay(autorest.GetRetryAfter(resp, delay)))
if err != nil {
return resp, autorest.NewErrorWithError(err, "azure", "DoPollForAsynchronous", resp, "Failure occurred retrieving OperationResource")
}
err = autorest.Respond(resp,
autorest.ByUnmarshallingJSON(or))
if err != nil {
return resp, autorest.NewErrorWithError(err, "azure", "DoPollForAsynchronous", resp, "Failure occurred unmarshalling an OperationResource")
}
}
if err == nil && or.HasTerminated() {
err = or.GetError()
}
return resp, err
})
}
}