/// <summary>
/// Pending licenses can offer grace periods. Logs a local issue; trusts the instance (and issue) will be cleared
/// when the returned DateTime passes. May subdivide a grace period for more granular issue text.
/// </summary>
/// <param name="chain"></param>
/// <returns></returns>
DateTimeOffset?GetGracePeriodFor(ILicenseChain chain)
{
// If the placeholder license fails its own constraints, don't add a grace period
if (chain.Licenses().All(b => !IsLicenseValid(b)))
{
return(null);
}
var graceMinutes = chain.Licenses()
.Where(IsLicenseValid)
.Select(b => b.Fields.NetworkGraceMinutes())
.OrderByDescending(v => v)
.FirstOrDefault() ?? DefaultNetworkGraceMinutes;
// Success will automatically replace this instance. Warn immediately.
Debug.Assert(mgr.FirstHeartbeat != null, "mgr.FirstHeartbeat != null");
// NetworkGraceMinutes Expired?
var expires = mgr.FirstHeartbeat.Value.AddMinutes(graceMinutes);
if (expires < clock.GetUtcNow())
{
permanentIssues.AcceptIssue(new Issue($"Grace period of {graceMinutes}m expired for license {chain.Id}",
$"License {chain.Id} was not found in the disk cache and could not be retrieved from the remote server within {graceMinutes} minutes.",
IssueSeverity.Error));
return(null);
}
// Less than 30 seconds since boot time?
var thirtySeconds = mgr.FirstHeartbeat.Value.AddSeconds(30);
if (thirtySeconds > clock.GetUtcNow())
{
AcceptIssue(new Issue($"Fetching license {chain.Id} (not found in disk cache).",
$"Network grace period expires in {graceMinutes} minutes", IssueSeverity.Warning));
return(thirtySeconds);
}
// Otherwise in grace period
AcceptIssue(new Issue(
$"Grace period of {graceMinutes}m will expire for license {chain.Id} at UTC {expires:HH:mm} on {expires:D}",
$"License {chain.Id} was not found in the disk cache and could not be retrieved from the remote server.",
IssueSeverity.Error));
return(expires);
}
bool IsPendingLicense(ILicenseChain chain)
{
return(chain.IsRemote && chain.Licenses().All(b => b.Fields.IsRemotePlaceholder()));
}
