From dac3508de7d84e93c79e21d799daaea0a1716281 Mon Sep 17 00:00:00 2001
From: Romazes <romazes20@gmail.com>
Date: Tue, 27 Feb 2024 00:22:59 +0200
Subject: [PATCH] feat: missed flags to prevent spamming for user

---
 QuantConnect.IEX/IEXDataProvider.cs | 35 +++++++++++++++++++++++++----
 1 file changed, 31 insertions(+), 4 deletions(-)

diff --git a/QuantConnect.IEX/IEXDataProvider.cs b/QuantConnect.IEX/IEXDataProvider.cs
index 4474b10..21e1a70 100644
--- a/QuantConnect.IEX/IEXDataProvider.cs
+++ b/QuantConnect.IEX/IEXDataProvider.cs
@@ -58,6 +58,21 @@ public class IEXDataProvider : SynchronizingHistoryProvider, IDataQueueHandler
         /// </summary>
         private static bool _invalidHistoryDataTypeWarningFired;
 
+        /// <summary>
+        /// Indicates whether the warning for invalid <see cref="SecurityType"/> has been fired.
+        /// </summary>
+        private bool _invalidSecurityTypeWarningFired;
+
+        /// <summary>
+        /// Indicates whether a warning for an invalid start time has been fired, where the start time is greater than or equal to the end time in UTC.
+        /// </summary>
+        private bool _invalidStartTimeWarningFired;
+
+        /// <summary>
+        /// Indicates whether a warning for an invalid <see cref="Resolution"/> has been fired, where the resolution is neither daily nor minute-based.
+        /// </summary>
+        private bool _invalidResolutionWarningFired;
+
         /// <summary>
         /// Represents two clients: one for the trade channel and another for the top-of-book channel.
         /// </summary>
@@ -509,21 +524,33 @@ public override void Initialize(HistoryProviderInitializeParameters parameters)
                     continue;
                 }
 
-                if (request.Symbol.SecurityType != SecurityType.Equity)
+                if (!CanSubscribe(request.Symbol))
                 {
-                    Log.Trace($"{nameof(IEXDataProvider)}.{nameof(GetHistory)}: Unsupported SecurityType '{request.Symbol.SecurityType}' for symbol '{request.Symbol}'");
+                    if (!_invalidSecurityTypeWarningFired)
+                    {
+                        Log.Trace($"{nameof(IEXDataProvider)}.{nameof(GetHistory)}: Unsupported SecurityType '{request.Symbol.SecurityType}' for symbol '{request.Symbol}'");
+                        _invalidSecurityTypeWarningFired = true;
+                    }
                     continue;
                 }
 
                 if (request.StartTimeUtc >= request.EndTimeUtc)
                 {
-                    Log.Error($"{nameof(IEXDataProvider)}.{nameof(GetHistory)}: Error - The start date in the history request must come before the end date. No historical data will be returned.");
+                    if (!_invalidStartTimeWarningFired)
+                    {
+                        Log.Error($"{nameof(IEXDataProvider)}.{nameof(GetHistory)}: Error - The start date in the history request must come before the end date. No historical data will be returned.");
+                        _invalidStartTimeWarningFired = true;
+                    }
                     continue;
                 }
 
                 if (request.Resolution != Resolution.Daily && request.Resolution != Resolution.Minute)
                 {
-                    Log.Error($"{nameof(IEXDataProvider)}.{nameof(GetHistory)}: History calls for IEX only support daily & minute resolution.");
+                    if (!_invalidResolutionWarningFired)
+                    {
+                        Log.Error($"{nameof(IEXDataProvider)}.{nameof(GetHistory)}: History calls for IEX only support daily & minute resolution.");
+                        _invalidResolutionWarningFired = true;
+                    }
                     continue;
                 }