From 6c44bfa3fb257f1a0a014306339ce691d8a2b88c Mon Sep 17 00:00:00 2001
From: Arne Welzel <arne.welzel@corelight.com>
Date: Mon, 14 Apr 2025 14:06:59 +0200
Subject: [PATCH] broker: Include log event identifier in stderr output

---
 src/broker/Manager.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/broker/Manager.cc b/src/broker/Manager.cc
index a77f050ede..5cb63149c0 100644
--- a/src/broker/Manager.cc
+++ b/src/broker/Manager.cc
@@ -1167,8 +1167,11 @@ void Manager::ProcessLogEvents() {
             event_mgr.Enqueue(::Broker::internal_log_event, std::move(args));
         }
         if ( bstate->stderrSeverity >= severity ) {
-            fprintf(stderr, "[BROKER/%s] %s\n", severity_names_tbl[static_cast<int>(severity)],
-                    event->description.c_str());
+            // Formatting the event->identifier string_view using "%.*s" - the explicit
+            // precision ".*" allows specifying the length of the following char* argument
+            // as string_views in general are not guaranteed to be null terminated.
+            fprintf(stderr, "[BROKER/%s] %.*s: %s\n", severity_names_tbl[static_cast<int>(severity)],
+                    static_cast<int>(event->identifier.size()), event->identifier.data(), event->description.c_str());
         }
     }
 }