private async Task <ActionResult <GuidInfo> > ProcessGuidInfo(GuidInfoEntity info, bool fromCache)
{
if (info.Expire < _clock.UtcNow)
{
// retrieved info has expired
if (fromCache)
{
// remove it from cache
await InvalidateCache(info.Guid);
}
// and return 410 code (Gone)
return(StatusCode((int)HttpStatusCode.Gone, new GuidApiError(GuidErrorCode.GuidExpired)));
}
else
{
// this is a valid (not expired) guid
if (!fromCache)
{
// retrieved from database, add it to cache
// NOTE: Assuming Redis LRU caching, see https://redis.io/topics/lru-cache
// NOTE: Alternatively, we could set an expiration time for entries
await _cache.SetEntityAsync(_cachePrefix, info.Guid.ToString(), info);
}
return(info.ToGuidInfo());
}
}
private async Task <ActionResult <GuidInfo> > CreateGuidInfo(System.Guid guid, GuidInfoBase info)
{
if (string.IsNullOrWhiteSpace(info.User))
{
return(BadRequest(new GuidApiError(GuidErrorCode.InvalidUser)));
}
else
{
var entity = new GuidInfoEntity()
{
Guid = guid,
Expire = info.Expire ?? GetDefaultExpireDate(),
User = info.User
};
await _context.GuidInfos.AddAsync(entity);
await _context.SaveChangesAsync();
var guidInfo = entity.ToGuidInfo();
return(CreatedAtRoute("GetGuidInfo", new { id = guidInfo.Guid }, guidInfo));
}
}