private static string GetUserTenant(HttpContext context, string userToken)
{
string text = null;
if (context.Request != null)
{
text = context.Request.Headers["msExchTargetTenant"];
}
if (string.IsNullOrEmpty(text))
{
FailFastModule.TryParseEmailDomain(userToken, out text);
}
return text;
}
static FailFastModule()
{
FailFastUserCache.IsPrimaryUserCache = true;
bool flag = false;
if (!bool.TryParse(ConfigurationManager.AppSettings["FailFastEnabled"], out flag))
{
flag = false;
}
FailFastUserCache.FailFastEnabled = flag;
ExTraceGlobals.FailFastModuleTracer.Information<bool>(0L, "FailFast Enabled:", flag);
Logger.LogEvent(TaskEventLogConstants.Tuple_LogFailFastEnabledFlag, null, new object[]
{
flag
});
FailFastModule.perfCounter = FailFastModule.CreatePerfCounter();
}
private static void ApplicationBeginRequest(object sender, EventArgs e)
{
if (!FailFastUserCache.FailFastEnabled)
{
return;
}
Logger.EnterFunction(ExTraceGlobals.FailFastModuleTracer, "FailFastModule.ApplicationBeginRequest");
HttpApplication httpApplication = (HttpApplication)sender;
HttpContext context = httpApplication.Context;
string text = null;
foreach (IUserTokenParser userTokenParser in FailFastModule.tokenParsers)
{
if (userTokenParser.TryParseUserToken(context, out text))
{
Logger.TraceInformation(ExTraceGlobals.FailFastModuleTracer, "{0} module parses the user token successfully. User token parsed: {1}.", new object[]
{
userTokenParser.GetType(),
text
});
break;
}
}
if (string.IsNullOrEmpty(text))
{
Logger.TraceDebug(ExTraceGlobals.FailFastModuleTracer, "No usertoken is parsed, exit directly.", new object[0]);
Logger.ExitFunction(ExTraceGlobals.FailFastModuleTracer, "FailFastModule.ApplicationBeginRequest");
return;
}
if (context == null || context.Response == null)
{
Logger.TraceDebug(ExTraceGlobals.FailFastModuleTracer, "context == null || context.Response == null", new object[0]);
Logger.ExitFunction(ExTraceGlobals.FailFastModuleTracer, "FailFastModule.ApplicationBeginRequest");
return;
}
context.Response.Headers[FailFastModule.headerKeyToStoreUserToken] = text;
string userTenant = FailFastModule.GetUserTenant(context, text);
Logger.TraceDebug(ExTraceGlobals.FailFastModuleTracer, "Tenant for current user {0} is {1} (If not email domain, it is in Delegated scenario).", new object[]
{
text,
userTenant
});
string text2;
FailFastUserCacheValue failFastUserCacheValue;
BlockedReason blockedReason;
if (!FailFastUserCache.Instance.IsUserInCache(text, userTenant, out text2, out failFastUserCacheValue, out blockedReason))
{
Logger.TraceDebug(ExTraceGlobals.FailFastModuleTracer, "Http request of User {0} is not handled by FailFastModule because it is not in FailFastUserCache.", new object[]
{
text
});
Logger.ExitFunction(ExTraceGlobals.FailFastModuleTracer, "FailFastModule.ApplicationBeginRequest");
return;
}
if (!ConnectedUserManager.ShouldFailFastUserInCache(text, text2, failFastUserCacheValue, blockedReason))
{
Logger.TraceDebug(ExTraceGlobals.FailFastModuleTracer, "Http request of User {0} is not considered to be FailFast case. CacheKey: {1}. CacheValue: {2}. BlockedReason {3}.", new object[]
{
text,
text2,
failFastUserCacheValue,
blockedReason
});
Logger.ExitFunction(ExTraceGlobals.FailFastModuleTracer, "FailFastModule.ApplicationBeginRequest");
return;
}
Logger.LogEvent(TaskEventLogConstants.Tuple_LogUserRequestIsFailed, text2, new object[]
{
text,
text2,
failFastUserCacheValue.ToString()
});
Logger.TraceError(ExTraceGlobals.FailFastModuleTracer, "Http request of User {0} is terminated in fail-fast module.", new object[]
{
text
});
FailFastModule.perfCounter.RequestsBeFailFasted.RawValue = FailFastModule.perfCounter.RequestsBeFailFasted.RawValue + 1L;
HttpLogger.SafeSetLogger(RpsHttpMetadata.FailFast, string.Concat(new object[]
{
text,
"+",
blockedReason,
"+",
(failFastUserCacheValue == null) ? "Null" : failFastUserCacheValue.HitCount.ToString()
}));
ConnectedUserManager.RemoveUser(text);
string responseErrorMessage = FailFastModule.GetResponseErrorMessage(blockedReason);
context.Response.ContentType = "application/soap+xml;charset=UTF-8";
context.Response.Write(responseErrorMessage);
context.Response.StatusCode = 400;
context.Response.SubStatusCode = 350;
context.Response.TrySkipIisCustomErrors = true;
WinRMInfo.SetFailureCategoryInfo(context.Response.Headers, FailureCategory.FailFast, blockedReason.ToString());
Logger.TraceInformation(ExTraceGlobals.FailFastModuleTracer, "Sending 400.350 to the client.", new object[0]);
context.Response.End();
Logger.ExitFunction(ExTraceGlobals.FailFastModuleTracer, "FailFastModule.ApplicationBeginRequest");
}
