private static async Task PopulateResourceEventData(
IResourceEventRepository resourceEventRepository,
ApiOperationContext context,
ResourceEvent resourceEvent)
{
// Get the latest after creation or update (cannot, obviously, get for a deleted record)
if (resourceEvent.ChangeType != ResourceEventChangeType.Deleted)
{
resourceEvent.Data = await GetByIdAsync(context, resourceEvent.SelfQuery);
}
if (resourceEvent.ChangeType == ResourceEventChangeType.Updated)
{
var previousResource =
await resourceEventRepository.GetCurrentDataAsync(resourceEvent.Href, resourceEvent.ResourceType);
// There are cases where the old resource will not exist because resources being saved was a new
// introduction after being in prod for over a year
if (previousResource != null)
{
resourceEvent.ChangedValues = ObjectComparer.GetPreviousValues(
previousResource,
resourceEvent.Data);
}
}
}
private static async Task TryPopulateChangedValuesAsync(
IResourceEventRepository resourceEventRepository,
ResourceEvent resourceEvent)
{
if (resourceEvent.ChangeType == ResourceEventChangeType.Updated && resourceEvent.Data != null)
{
var previousResource =
await resourceEventRepository.GetCurrentDataAsync(resourceEvent.Href, resourceEvent.Data.GetType());
// There are cases where the old resource will not exist because resources being saved was a new
// introduction after being in prod for over a year
if (previousResource != null)
{
resourceEvent.ChangedValues = ObjectComparer.GetPreviousValues(
previousResource,
resourceEvent.Data);
}
}
}