private async Task<HttpResponseMessage> SetContainerLease(CloudBlobContainer container)
{
IEnumerable<string> action;
string leaseId = null;
string proposedLeaseId = null;
HttpResponseMessage response = new HttpResponseMessage();
AccessCondition condition;
string serverLeaseId;
await AddBasicContainerHeaders(response, container);
//If an action is not provided, it's not a valid call.
if (!Request.Headers.TryGetValues("x-ms-lease-action", out action))
{
response.StatusCode = HttpStatusCode.BadRequest;
return response;
}
if (Request.Headers.Contains("x-ms-lease-id"))
{
leaseId = Request.Headers.GetValues("x-ms-lease-id").FirstOrDefault();
}
if (Request.Headers.Contains("x-ms-proposed-lease-id"))
{
proposedLeaseId = Request.Headers.GetValues("x-ms-proposed-lease-id").FirstOrDefault();
}
switch (action.First().ToLower())
{
case "acquire":
int leaseDuration = Int32.Parse(Request.Headers.GetValues("x-ms-lease-duration").First());
TimeSpan? leaseDurationSpan;
if (leaseDuration == -1)
{
leaseDurationSpan = null;
}
else if (leaseDuration >= 15 && leaseDuration <= 60)
{
leaseDurationSpan = new TimeSpan(0, 0, leaseDuration);
}
else
{
response.StatusCode = HttpStatusCode.BadRequest;
return response;
}
serverLeaseId = await container.AcquireLeaseAsync(leaseDurationSpan, proposedLeaseId);
response = new DelegatedResponse(await ContainerHandler.DoForDataContainersAsync(container.Name,
HttpStatusCode.Created,
async containerObj => await containerObj.AcquireLeaseAsync(leaseDurationSpan, serverLeaseId),
true)).CreateResponse();
await AddBasicContainerHeaders(response, container);
response.Headers.Add("x-ms-lease-id", serverLeaseId);
return response;
case "renew":
condition = new AccessCondition()
{
LeaseId = leaseId
};
response = new DelegatedResponse(await ContainerHandler.DoForAllContainersAsync(container.Name,
HttpStatusCode.OK,
async containerObj => await containerObj.RenewLeaseAsync(condition),
true)).CreateResponse();
await AddBasicContainerHeaders(response, container);
response.Headers.Add("x-ms-lease-id", leaseId);
return response;
case "change":
condition = new AccessCondition()
{
LeaseId = leaseId
};
serverLeaseId = await container.ChangeLeaseAsync(proposedLeaseId, condition);
response = new DelegatedResponse(await ContainerHandler.DoForDataContainersAsync(container.Name,
HttpStatusCode.OK,
async containerObj => await containerObj.ChangeLeaseAsync(proposedLeaseId, condition),
true)).CreateResponse();
await AddBasicContainerHeaders(response, container);
response.Headers.Add("x-ms-lease-id", container.ChangeLease(proposedLeaseId, condition));
return response;
case "release":
condition = new AccessCondition()
{
LeaseId = leaseId
};
response = new DelegatedResponse(await ContainerHandler.DoForAllContainersAsync(container.Name,
HttpStatusCode.OK,
async containerObj => await containerObj.ReleaseLeaseAsync(condition),
true)).CreateResponse();
await AddBasicContainerHeaders(response, container);
return response;
case "break":
int breakDuration = 0;
if (Request.Headers.Contains("x-ms-lease-break-period"))
{
breakDuration = Int32.Parse(Request.Headers.GetValues("x-ms-lease-break-period").FirstOrDefault());
}
TimeSpan breakDurationSpan = new TimeSpan(0, 0, breakDuration);
TimeSpan remainingTime = await container.BreakLeaseAsync(breakDurationSpan);
response = new DelegatedResponse(await ContainerHandler.DoForDataContainersAsync(container.Name,
HttpStatusCode.Accepted,
async containerObj => await containerObj.BreakLeaseAsync(breakDurationSpan),
true)).CreateResponse();
await AddBasicContainerHeaders(response, container);
response.Headers.Add("x-ms-lease-time", remainingTime.Seconds.ToString());
return response;
default:
//Not a recognized action
response.StatusCode = HttpStatusCode.BadRequest;
return response;
}
}
