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package blobs
import (
"context"
"fmt"
"net/http"
"strings"
"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 PutPageUpdateInput struct {
StartByte int64
EndByte int64
Content []byte
IfSequenceNumberEQ *string
IfSequenceNumberLE *string
IfSequenceNumberLT *string
IfModifiedSince *string
IfUnmodifiedSince *string
IfMatch *string
IfNoneMatch *string
LeaseID *string
}
type PutPageUpdateResult struct {
autorest.Response
BlobSequenceNumber string
ContentMD5 string
LastModified string
}
// PutPageUpdate writes a range of pages to a page blob.
func (client Client) PutPageUpdate(ctx context.Context, accountName, containerName, blobName string, input PutPageUpdateInput) (result PutPageUpdateResult, err error) {
if accountName == "" {
return result, validation.NewError("blobs.Client", "PutPageUpdate", "`accountName` cannot be an empty string.")
}
if containerName == "" {
return result, validation.NewError("blobs.Client", "PutPageUpdate", "`containerName` cannot be an empty string.")
}
if strings.ToLower(containerName) != containerName {
return result, validation.NewError("blobs.Client", "PutPageUpdate", "`containerName` must be a lower-cased string.")
}
if blobName == "" {
return result, validation.NewError("blobs.Client", "PutPageUpdate", "`blobName` cannot be an empty string.")
}
if input.StartByte < 0 {
return result, validation.NewError("blobs.Client", "PutPageUpdate", "`input.StartByte` must be greater than or equal to 0.")
}
if input.EndByte <= 0 {
return result, validation.NewError("blobs.Client", "PutPageUpdate", "`input.EndByte` must be greater than 0.")
}
expectedSize := (input.EndByte - input.StartByte) + 1
actualSize := int64(len(input.Content))
if expectedSize != actualSize {
return result, validation.NewError("blobs.Client", "PutPageUpdate", fmt.Sprintf("Content Size was defined as %d but got %d.", expectedSize, actualSize))
}
req, err := client.PutPageUpdatePreparer(ctx, accountName, containerName, blobName, input)
if err != nil {
err = autorest.NewErrorWithError(err, "blobs.Client", "PutPageUpdate", nil, "Failure preparing request")
return
}
resp, err := client.PutPageUpdateSender(req)
if err != nil {
result.Response = autorest.Response{Response: resp}
err = autorest.NewErrorWithError(err, "blobs.Client", "PutPageUpdate", resp, "Failure sending request")
return
}
result, err = client.PutPageUpdateResponder(resp)
if err != nil {
err = autorest.NewErrorWithError(err, "blobs.Client", "PutPageUpdate", resp, "Failure responding to request")
return
}
return
}
// PutPageUpdatePreparer prepares the PutPageUpdate request.
func (client Client) PutPageUpdatePreparer(ctx context.Context, accountName, containerName, blobName string, input PutPageUpdateInput) (*http.Request, error) {
pathParameters := map[string]interface{}{
"containerName": autorest.Encode("path", containerName),
"blobName": autorest.Encode("path", blobName),
}
queryParameters := map[string]interface{}{
"comp": autorest.Encode("query", "page"),
}
headers := map[string]interface{}{
"x-ms-version": APIVersion,
"x-ms-page-write": "update",
"x-ms-range": fmt.Sprintf("bytes=%d-%d", input.StartByte, input.EndByte),
"Content-Length": int(len(input.Content)),
}
if input.LeaseID != nil {
headers["x-ms-lease-id"] = *input.LeaseID
}
if input.IfSequenceNumberEQ != nil {
headers["x-ms-if-sequence-number-eq"] = *input.IfSequenceNumberEQ
}
if input.IfSequenceNumberLE != nil {
headers["x-ms-if-sequence-number-le"] = *input.IfSequenceNumberLE
}
if input.IfSequenceNumberLT != nil {
headers["x-ms-if-sequence-number-lt"] = *input.IfSequenceNumberLT
}
if input.IfModifiedSince != nil {
headers["If-Modified-Since"] = *input.IfModifiedSince
}
if input.IfUnmodifiedSince != nil {
headers["If-Unmodified-Since"] = *input.IfUnmodifiedSince
}
if input.IfMatch != nil {
headers["If-Match"] = *input.IfMatch
}
if input.IfNoneMatch != nil {
headers["If-None-Match"] = *input.IfNoneMatch
}
preparer := autorest.CreatePreparer(
autorest.AsPut(),
autorest.WithBaseURL(endpoints.GetBlobEndpoint(client.BaseURI, accountName)),
autorest.WithPathParameters("/{containerName}/{blobName}", pathParameters),
autorest.WithQueryParameters(queryParameters),
autorest.WithHeaders(headers),
autorest.WithBytes(&input.Content))
return preparer.Prepare((&http.Request{}).WithContext(ctx))
}
// PutPageUpdateSender sends the PutPageUpdate request. The method will close the
// http.Response Body if it receives an error.
func (client Client) PutPageUpdateSender(req *http.Request) (*http.Response, error) {
return autorest.SendWithSender(client, req,
azure.DoRetryWithRegistration(client.Client))
}
// PutPageUpdateResponder handles the response to the PutPageUpdate request. The method always
// closes the http.Response Body.
func (client Client) PutPageUpdateResponder(resp *http.Response) (result PutPageUpdateResult, err error) {
if resp != nil && resp.Header != nil {
result.BlobSequenceNumber = resp.Header.Get("x-ms-blob-sequence-number")
result.ContentMD5 = resp.Header.Get("Content-MD5")
result.LastModified = resp.Header.Get("Last-Modified")
}
err = autorest.Respond(
resp,
client.ByInspecting(),
azure.WithErrorUnlessStatusCode(http.StatusCreated),
autorest.ByClosing())
result.Response = autorest.Response{Response: resp}
return
}
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