private void _insertNodeIntoLeafsQueue(IList <DockerImageNode> leafs, DockerImageNode node)
{
var index = leafs.Count;
for (int i = 0; i < leafs.Count; i++)
{
if (ImageDeletionOrder is ImageDeletionOrderType.ByImageCreationDate)
{
if (node.InspectResponse.Created < leafs[i].InspectResponse.Created)
{
index = i;
break;
}
}
else if (ImageDeletionOrder is ImageDeletionOrderType.ByImageLastTouchDate)
{
if (node.GetImageLastTouchDate(this._imageLastTouchDate) < leafs[i].GetImageLastTouchDate(this._imageLastTouchDate))
{
index = i;
break;
}
}
}
leafs.Insert(index, node);
}
// Returns true when all child images can be deleted, meaning all child images have no running containers (all dead or exited)
// and they are old enough to be safely deleted.
private bool _canDelete(DockerImageNode image, List <DockerImageNode> imagesToBeRecycledInOrder)
{
var canDelete = true;
foreach (var child in image.Children)
{
if (!_canDelete(child, imagesToBeRecycledInOrder))
{
canDelete = false;
}
else
{
imagesToBeRecycledInOrder.Add(child);
}
}
if (ImageDeletionOrder is ImageDeletionOrderType.ByImageCreationDate)
{
if (image.InspectResponse.Created >= DateTime.UtcNow.AddDays(-this.DaysBeforeDeletion))
{
return(false);
}
}
else if (ImageDeletionOrder is ImageDeletionOrderType.ByImageLastTouchDate)
{
var imageLastTouchDate = image.GetImageLastTouchDate(this._imageLastTouchDate);
if (imageLastTouchDate >= DateTime.UtcNow.AddDays(-this.DaysBeforeDeletion))
{
return(false);
}
}
if (!base.CanDelete(image))
{
canDelete = false;
}
return(canDelete);
}