private void ScavengeByNumber(int deleteBatchSize)
{
if (ConfigurationManager.AppSettings["MaxDocsInDatabase"] == null) return;
var maxDocs = long.Parse(ConfigurationManager.AppSettings["MaxDocsInDatabase"]);
var options = new ViewOptions();
options.StartKey.Add(MessageIdManager.Create(new DateTime(1970, 1, 1)).ToDocId());
options.EndKey.Add(MessageIdManager.Create(DateTime.UtcNow).ToDocId());
var db = new CouchClient(ConfigurationManager.AppSettings["HydraServer"], int.Parse(ConfigurationManager.AppSettings["Port"]), null, null, false, AuthenticationType.Basic).
GetDatabase(ConfigurationManager.AppSettings["Database"]);
// Getting the empty document returns general database info
var deleteCount = db.GetDocument("").Value<long>("doc_count") - maxDocs;
while (deleteCount > 0) {
options.Limit = (int) Math.Min(deleteCount, deleteBatchSize);
var rows = db.GetAllDocuments(options).Rows;
if (!rows.Any()) break;
DeleteDocs(rows, db);
deleteCount -= deleteBatchSize;
}
}