/// <summary>
/// Initializes a new instance of the RedisSessionAccessor class, which provides access to a
/// local Redis items collection outside of the standard ASP.NET pipeline Session hooks
/// </summary>
/// <param name="context">The context of the current request</param>
public RedisSessionAccessor(HttpContextBase context)
{
try
{
this.RequestContext = context;
this.SharedSessions = new LocalSharedSessionDictionary();
// if we have the session ID
if (this.RequestContext.Request.Cookies[RedisSessionConfig.SessionHttpCookieName] != null)
{
this.SessionRedisHashKey = RedisSessionStateStoreProvider.RedisHashIdFromSessionId(
this.RequestContext,
this.RequestContext.Request.Cookies[RedisSessionConfig.SessionHttpCookieName].Value);
}
if (!string.IsNullOrEmpty(this.SessionRedisHashKey))
{
RedisSessionStateItemCollection items =
this.SharedSessions.GetSessionForBeginRequest(
this.SessionRedisHashKey,
(string redisKey) =>
{
return(RedisSessionStateStoreProvider.GetItemFromRedis(
redisKey,
this.RequestContext,
RedisSessionConfig.SessionTimeout));
});
this.Session = new FakeHttpSessionState(items);
}
}
catch (Exception exc)
{
if (RedisSessionConfig.RedisSessionAccessorExceptionLoggingDel != null)
{
string errMsg = string.Format(
"RedisSessionAccessor unable to get Redis session for id: {0}",
this.SessionRedisHashKey);
RedisSessionConfig.RedisSessionAccessorExceptionLoggingDel(
context,
errMsg,
exc);
}
}
}
/// <summary>
/// Gets a Session from Redis, indicating a non-exclusive lock on the Session. Note that GetItemExclusive
/// calls this method internally, meaning we do not support locks at all retrieving the Session.
/// </summary>
/// <param name="context">The HttpContext of the current request</param>
/// <param name="id">The Session Id, which is the key name in Redis</param>
/// <param name="locked">Whether or not the Session is locked to exclusive access for a single request
/// thread</param>
/// <param name="lockAge">The age of the lock</param>
/// <param name="lockId">The object used to lock the Session</param>
/// <param name="actions">Whether or not to initialize the Session (never)</param>
/// <returns>The Session objects wrapped in a SessionStateStoreData object</returns>
public override SessionStateStoreData GetItem(HttpContext context, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions)
{
locked = false;
lockAge = new TimeSpan(0);
lockId = null;
actions = SessionStateActions.None;
try
{
string parsedRedisHashId = RedisSessionStateStoreProvider.RedisHashIdFromSessionId(
new HttpContextWrapper(context),
id);
LocalSharedSessionDictionary sharedSessDict = new LocalSharedSessionDictionary();
RedisSessionStateItemCollection items = sharedSessDict.GetSessionForBeginRequest(
parsedRedisHashId,
(redisKey) => {
return(RedisSessionStateStoreProvider.GetItemFromRedis(
redisKey,
new HttpContextWrapper(context),
this.SessionTimeout));
});
return(new SessionStateStoreData(
items,
SessionStateUtility.GetSessionStaticObjects(context),
Convert.ToInt32(this.SessionTimeout.TotalMinutes)));
}
catch (Exception e)
{
if (RedisSessionConfig.SessionExceptionLoggingDel != null)
{
RedisSessionConfig.SessionExceptionLoggingDel(e);
}
}
return(this.CreateNewStoreData(context, Convert.ToInt32(this.SessionTimeout.TotalMinutes)));
}