public static UserNotificationTableEntity FromNotification(UserNotification source, JsonSerializerSettings serializerSettings)
{
// We're going to use a "reversed" timestamp in the row key. Our standard query will be to get recent
// notifications for a user in descending order of timestamp, potentially since the previous set of
// notifications was retrieved. Using the reversed timestamp for the row key means that this will be the
// default sort order. This means that when we look for new notifications since a specified time, the
// resulting partition scan will be able to complete as soon as it encounters a record with an earlier
// timestamp, or when it hits the maximum requested items.
long reversedTimestamp = long.MaxValue - source.Timestamp.ToUnixTimeMilliseconds();
string correlationIdsJson = JsonConvert.SerializeObject(source.Metadata.CorrelationIds, serializerSettings);
string propertiesJson = JsonConvert.SerializeObject(source.Properties, serializerSettings);
string channelDeliveryStatusesJson = JsonConvert.SerializeObject(source.ChannelStatuses, serializerSettings);
byte[] identityHash = source.GetIdentityHash(serializerSettings);
string rowKey = $"{reversedTimestamp:D21}-{GetHexadecimalString(identityHash)}";
return(new UserNotificationTableEntity
{
PartitionKey = source.UserId,
RowKey = rowKey,
NotificationType = source.NotificationType,
NotificationTimestamp = source.Timestamp,
CorrelationIdsJson = correlationIdsJson,
PropertiesJson = propertiesJson,
ChannelDeliveryStatusesJson = channelDeliveryStatusesJson,
ETag = source.Metadata.ETag,
});
}