public static Task <TablePermissions> GetPermissionsAsync(this CloudTable tbl, TableRequestOptions opt, OperationContext ctx, CancellationToken token)
{
ICancellableAsyncResult result = null;
if (opt == null && ctx == null)
{
result = tbl.BeginGetPermissions(null, null);
}
else
{
result = tbl.BeginGetPermissions(opt, ctx, null, null);
}
var cancellationRegistration = token.Register(result.Cancel);
return(Task.Factory.FromAsync(result, ar =>
{
cancellationRegistration.Dispose();
try
{
return tbl.EndGetPermissions(ar);
}
catch (StorageException se)
{
// Todo: Use the PnP azure retry block here for transient exceptions
throw;
}
}));
}
/// <summary>
/// Gets the permissions settings for the table asynchronously.
/// </summary>
/// <param name="cloudTable">Cloud table.</param>
/// <param name="cancellationToken">Cancellation token.</param>
/// <returns>
/// The table's permissions.
/// </returns>
public static Task <TablePermissions> GetPermissionsAsync(
this CloudTable cloudTable,
CancellationToken cancellationToken = default(CancellationToken))
{
ICancellableAsyncResult asyncResult = cloudTable.BeginGetPermissions(null, null);
CancellationTokenRegistration registration = cancellationToken.Register(p => asyncResult.Cancel(), null);
return(Task <TablePermissions> .Factory.FromAsync(
asyncResult,
result =>
{
registration.Dispose();
return cloudTable.EndGetPermissions(result);
}));
}
public TablePermissions EndGetPermissions(IAsyncResult asyncResult)
{
return(_cloudTable.EndGetPermissions(asyncResult));
}
public void TableSetGetPermissionsAPM()
{
CloudTableClient tableClient = GenerateCloudTableClient();
CloudTable table = tableClient.GetTableReference("T" + Guid.NewGuid().ToString("N"));
try
{
table.Create();
TableServiceContext context = tableClient.GetTableServiceContext();
context.AddObject(table.Name, new BaseEntity("PK", "RK"));
context.SaveChangesWithRetries();
TablePermissions expectedPermissions = new TablePermissions();
TablePermissions testPermissions = table.GetPermissions();
AssertPermissionsEqual(expectedPermissions, testPermissions);
// Add a policy, check setting and getting.
expectedPermissions.SharedAccessPolicies.Add(Guid.NewGuid().ToString(), new SharedAccessTablePolicy
{
Permissions = SharedAccessTablePermissions.Query,
SharedAccessStartTime = DateTimeOffset.Now - TimeSpan.FromHours(1),
SharedAccessExpiryTime = DateTimeOffset.Now + TimeSpan.FromHours(1)
});
using (ManualResetEvent evt = new ManualResetEvent(false))
{
IAsyncResult result = null;
table.BeginSetPermissions(expectedPermissions, (res) =>
{
result = res;
evt.Set();
}, null);
evt.WaitOne();
table.EndSetPermissions(result);
}
Thread.Sleep(30 * 1000);
using (ManualResetEvent evt = new ManualResetEvent(false))
{
IAsyncResult result = null;
table.BeginGetPermissions((res) =>
{
result = res;
evt.Set();
}, null);
evt.WaitOne();
testPermissions = table.EndGetPermissions(result);
}
AssertPermissionsEqual(expectedPermissions, testPermissions);
}
finally
{
table.DeleteIfExists();
}
}