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package messages
import (
"context"
"net/http"
"strings"
"time"
"github.com/Azure/go-autorest/autorest"
"github.com/Azure/go-autorest/autorest/azure"
"github.com/Azure/go-autorest/autorest/validation"
"github.com/tombuildsstuff/giovanni/storage/internal/endpoints"
)
type GetInput struct {
// VisibilityTimeout specifies the new visibility timeout value, in seconds, relative to server time.
// The new value must be larger than or equal to 0, and cannot be larger than 7 days.
VisibilityTimeout *int
}
// Get retrieves one or more messages from the front of the queue
func (client Client) Get(ctx context.Context, accountName, queueName string, numberOfMessages int, input GetInput) (result QueueMessagesListResult, err error) {
if accountName == "" {
return result, validation.NewError("messages.Client", "Get", "`accountName` cannot be an empty string.")
}
if queueName == "" {
return result, validation.NewError("messages.Client", "Get", "`queueName` cannot be an empty string.")
}
if strings.ToLower(queueName) != queueName {
return result, validation.NewError("messages.Client", "Get", "`queueName` must be a lower-cased string.")
}
if numberOfMessages < 1 || numberOfMessages > 32 {
return result, validation.NewError("messages.Client", "Get", "`numberOfMessages` must be between 1 and 32.")
}
if input.VisibilityTimeout != nil {
t := *input.VisibilityTimeout
maxTime := (time.Hour * 24 * 7).Seconds()
if t < 1 || t < int(maxTime) {
return result, validation.NewError("messages.Client", "Get", "`input.VisibilityTimeout` must be larger than or equal to 1 second, and cannot be larger than 7 days.")
}
}
req, err := client.GetPreparer(ctx, accountName, queueName, numberOfMessages, input)
if err != nil {
err = autorest.NewErrorWithError(err, "messages.Client", "Get", nil, "Failure preparing request")
return
}
resp, err := client.GetSender(req)
if err != nil {
result.Response = autorest.Response{Response: resp}
err = autorest.NewErrorWithError(err, "messages.Client", "Get", resp, "Failure sending request")
return
}
result, err = client.GetResponder(resp)
if err != nil {
err = autorest.NewErrorWithError(err, "messages.Client", "Get", resp, "Failure responding to request")
return
}
return
}
// GetPreparer prepares the Get request.
func (client Client) GetPreparer(ctx context.Context, accountName, queueName string, numberOfMessages int, input GetInput) (*http.Request, error) {
pathParameters := map[string]interface{}{
"queueName": autorest.Encode("path", queueName),
}
queryParameters := map[string]interface{}{
"numofmessages": autorest.Encode("query", numberOfMessages),
}
if input.VisibilityTimeout != nil {
queryParameters["visibilitytimeout"] = autorest.Encode("query", *input.VisibilityTimeout)
}
headers := map[string]interface{}{
"x-ms-version": APIVersion,
}
preparer := autorest.CreatePreparer(
autorest.AsContentType("application/xml; charset=utf-8"),
autorest.AsGet(),
autorest.WithBaseURL(endpoints.GetQueueEndpoint(client.BaseURI, accountName)),
autorest.WithPathParameters("/{queueName}/messages", pathParameters),
autorest.WithQueryParameters(queryParameters),
autorest.WithHeaders(headers))
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 Client) 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 Client) GetResponder(resp *http.Response) (result QueueMessagesListResult, err error) {
err = autorest.Respond(
resp,
client.ByInspecting(),
autorest.ByUnmarshallingXML(&result),
azure.WithErrorUnlessStatusCode(http.StatusOK),
autorest.ByClosing())
result.Response = autorest.Response{Response: resp}
return
}
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