/// <summary>
/// Will create policy on top of container, and return saskey
/// </summary>
/// <returns></returns>
public async Task <AzureSasKey> GetContainerSAS()
{
var container = await _containerFactory.CreateContainerReference();
var permissions = await GetContainerPermissions(container);
var policy = GetPolicy(permissions);
if (policy == null)
{
await CreatePolicyAndSetPersmission(permissions, container);
}
else if (IsExpired(policy))
{
DeletePolicy(policy, permissions);
await CreatePolicyAndSetPersmission(permissions, container);
}
var expiryTime = GetExpiryTime(policy);
if (!expiryTime.HasValue)
{
throw new Exception(Expiry_Time_Is_Invalid);
}
string token = GetSharedAccessSignature(container, policyName);
if (string.IsNullOrWhiteSpace(token))
{
throw new Exception(SasKey_Is_Invalid);
}
return(new AzureSasKey
{
ExpiryTimeInUtc = expiryTime.Value,
SasKey = token
});
}