internal static void UpsertEntireSessionDocument(
this MongoSessionStateStore obj,
IMongoCollection <BsonDocument> sessionCollection,
BsonDocument insertDoc)
{
int attempts = 0;
while (true)
{
try
{
var task = sessionCollection.InsertOneAsync(insertDoc);
task.Wait();
if (task.IsFaulted)
{
throw new Exception("retry!");
}
return;
}
catch (Exception e)
{
PauseOrThrow(ref attempts, obj, sessionCollection, e);
}
}
}
private static void PauseOrThrow(
ref int attempts,
MongoSessionStateStore obj,
IMongoCollection <BsonDocument> sessionCollection,
Exception e)
{
if (attempts < obj.MaxUpsertAttempts)
{
attempts++;
System.Threading.Thread.CurrentThread.Join(obj.MsWaitingForAttempt);
}
else
{
throw new ProviderException(MongoSessionStateStore.EXCEPTION_MESSAGE);
}
}
internal static BsonDocument FindOneSessionItem(
this MongoSessionStateStore obj,
IMongoCollection <BsonDocument> sessionCollection,
FilterDefinition <BsonDocument> q)
{
int nAtempts = 0;
while (true)
{
try
{
var task = sessionCollection.Find(q).FirstOrDefaultAsync();
task.Wait();
return(task.Result);
}
catch (Exception e)
{
PauseOrThrow(ref nAtempts, obj, sessionCollection, e);
}
}
}
/// <summary>
/// NOT used. It's preserved for future implementations.
/// </summary>
/// <param name="obj"></param>
/// <param name="e"></param>
/// <param name="action"></param>
/// <param name="eventType"></param>
internal static void WriteToEventLog(
this MongoSessionStateStore obj,
Exception e,
string action,
EventLogEntryType eventType = EventLogEntryType.Error)
{
if (obj.WriteExceptionsToEventLog)
{
using (var log = new EventLog())
{
log.Source = MongoSessionStateStore.EVENT_SOURCE;
log.Log = MongoSessionStateStore.EVENT_LOG;
string message =
String.Format("An exception occurred communicating with the data source.\n\nAction: {0}\n\nException: {1}",
action, e);
log.WriteEntry(message, eventType);
}
}
}
internal static DeleteResult DeleteSessionDocument(
this MongoSessionStateStore obj,
IMongoCollection <BsonDocument> sessionCollection,
FilterDefinition <BsonDocument> query)
{
int attempts = 0;
while (true)
{
try
{
var task = sessionCollection.DeleteManyAsync(query);
task.Wait();
return(task.Result);
}
catch (Exception e)
{
PauseOrThrow(ref attempts, obj, sessionCollection, e);
}
}
}
