From 735058f5c4b0f8af7883de77e010c081bd57c181 Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Thu, 19 Feb 2026 11:28:54 +0100
Subject: [PATCH] New log-analysis checker LastLineContains

---
 ci-scripts/cls_loganalysis.py               |  9 +++++++++
 ci-scripts/tests/log-analysis.py            | 16 ++++++++++++++++
 ci-scripts/tests/log-analysis/arbitrary.log |  9 +++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 ci-scripts/tests/log-analysis/arbitrary.log

diff --git a/ci-scripts/cls_loganalysis.py b/ci-scripts/cls_loganalysis.py
index f4de1258b8..38c36202bd 100644
--- a/ci-scripts/cls_loganalysis.py
+++ b/ci-scripts/cls_loganalysis.py
@@ -23,6 +23,7 @@
 import re
 import os
 import logging
+from collections import deque
 
 class Default:
 	def run(file, opt=None):
@@ -44,6 +45,14 @@ class ContainsString:
 					return True, ""
 		return False, f"could not find '{needle}' in logs"
 
+class LastLineContains:
+	def run(file, string):
+		with open(file, "r") as f:
+			last_line = deque(f, maxlen=1).pop()
+		success = string in last_line
+		log = "" if success else f"could not find '{string}' in last line"
+		return success, log
+
 class RetxCheck():
 	def _parseList(s):
 		if not s:
diff --git a/ci-scripts/tests/log-analysis.py b/ci-scripts/tests/log-analysis.py
index 6d5f6c5bd7..a4416305a8 100644
--- a/ci-scripts/tests/log-analysis.py
+++ b/ci-scripts/tests/log-analysis.py
@@ -94,5 +94,21 @@ UE 257a: ulsch_rounds 41777/2863/10/0, ulsch_errors 0, ulsch_DTX 17, BLER 0.1145
         self.assertFalse(result)
         self.assertEqual(log, expected)
 
+    def test_last_line_contains_false(self):
+        f = "tests/log-analysis/arbitrary.log"
+        opt = "Bye."
+        result, log = cls_loganalysis.LastLineContains.run(f, opt)
+        expected = f"could not find '{opt}' in last line"
+        self.assertFalse(result)
+        self.assertEqual(log, expected)
+
+    def test_last_line_contains_false(self):
+        f = "tests/log-analysis/arbitrary.log"
+        opt = "got sync"
+        result, log = cls_loganalysis.LastLineContains.run(f, opt)
+        expected = ""
+        self.assertTrue(result)
+        self.assertEqual(log, expected)
+
 if __name__ == '__main__':
 	unittest.main()
diff --git a/ci-scripts/tests/log-analysis/arbitrary.log b/ci-scripts/tests/log-analysis/arbitrary.log
new file mode 100644
index 0000000000..095690aeb3
--- /dev/null
+++ b/ci-scripts/tests/log-analysis/arbitrary.log
@@ -0,0 +1,9 @@
+[UTIL]   threadCreate() for L1_rx_thread: creating thread (no affinity, default priority)
+[UTIL]   threadCreate() for L1_tx_thread: creating thread (no affinity, default priority)
+[UTIL]   threadCreate() for L1_stats: creating thread (no affinity, default priority)
+TYPE <CTRL-C> TO TERMINATE
+[PHY]    got sync (ru_thread)
+[PHY]    RU 0 rf device ready
+[PHY]    RU 0 RF started cpu_meas_enabled 0
+[HW]     No connected device, generating void samples...
+[PHY]    got sync (L1_stats_thread)