From 009d86e7a6de5a9a859c6f2fd87c0745e908f0de Mon Sep 17 00:00:00 2001
From: James Turner <james@flightgear.org>
Date: Sat, 26 Jun 2021 16:25:33 +0100
Subject: [PATCH] Sentry: only report METAR parse failures once per session.

---
 src/Environment/realwx_ctrl.cxx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/Environment/realwx_ctrl.cxx b/src/Environment/realwx_ctrl.cxx
index cfcf72007..6cf7cc662 100644
--- a/src/Environment/realwx_ctrl.cxx
+++ b/src/Environment/realwx_ctrl.cxx
@@ -124,12 +124,18 @@ void LiveMetarProperties::handleMetarData( const std::string & data )
     _timeToLive = DEFAULT_TIME_TO_LIVE_SECONDS;
     
     SGSharedPtr<FGMetar> m;
+    static bool haveReportedMETARFailure = false;
     try {
         m = new FGMetar(data.c_str());
     }
     catch( sg_io_exception  &) {
         SG_LOG( SG_ENVIRONMENT, SG_WARN, "Can't parse metar: " << data );
-        flightgear::sentryReportException("Failed to parse live METAR", data);
+
+        // ensure we only report one METAR parse failure per session
+        if (!haveReportedMETARFailure) {
+            haveReportedMETARFailure = true;
+            flightgear::sentryReportException("Failed to parse live METAR", data);
+        }
         _failure = true;
         return;
     }