From 773e4cda9446a03c0b23468ef8a9e38496b4566b Mon Sep 17 00:00:00 2001
From: will <will@256k1.dev>
Date: Tue, 5 Aug 2025 14:41:09 +0100
Subject: [PATCH] ci: add ccache hit-rate warning when < 75%

Github-Pull: #32989
Rebased-From: dd1c5903e8d

Print the ccache hit-rate for the job using a GitHub annotation if it
was below 75%.
---
 ci/test/00_setup_env_mac_native.sh      | 1 +
 ci/test/00_setup_env_mac_native_fuzz.sh | 1 +
 ci/test/03_test_script.sh               | 6 ++++++
 3 files changed, 8 insertions(+)

diff --git a/ci/test/00_setup_env_mac_native.sh b/ci/test/00_setup_env_mac_native.sh
index e01a56895bf..9de51f93291 100755
--- a/ci/test/00_setup_env_mac_native.sh
+++ b/ci/test/00_setup_env_mac_native.sh
@@ -8,6 +8,7 @@ export LC_ALL=C.UTF-8
 
 # Homebrew's python@3.12 is marked as externally managed (PEP 668).
 # Therefore, `--break-system-packages` is needed.
+export CONTAINER_NAME="ci_mac_native"  # macos does not use a container, but the env var is needed for logging
 export PIP_PACKAGES="--break-system-packages zmq"
 export GOAL="install"
 export CMAKE_GENERATOR="Ninja"
diff --git a/ci/test/00_setup_env_mac_native_fuzz.sh b/ci/test/00_setup_env_mac_native_fuzz.sh
index cacf2423ac3..22b6bc97ab3 100755
--- a/ci/test/00_setup_env_mac_native_fuzz.sh
+++ b/ci/test/00_setup_env_mac_native_fuzz.sh
@@ -6,6 +6,7 @@
 
 export LC_ALL=C.UTF-8
 
+export CONTAINER_NAME="ci_mac_native_fuzz"  # macos does not use a container, but the env var is needed for logging
 export CMAKE_GENERATOR="Ninja"
 export BITCOIN_CONFIG="-DBUILD_FOR_FUZZING=ON"
 export CI_OS_NAME="macos"
diff --git a/ci/test/03_test_script.sh b/ci/test/03_test_script.sh
index c2ef2291bd5..36f8b9dfc2d 100755
--- a/ci/test/03_test_script.sh
+++ b/ci/test/03_test_script.sh
@@ -137,6 +137,12 @@ bash -c "cmake -S $BASE_ROOT_DIR $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( (cat $
 bash -c "cmake --build . $MAKEJOBS --target all $GOAL" || ( echo "Build failure. Verbose build follows." && cmake --build . --target all "$GOAL" --verbose ; false )
 
 bash -c "${PRINT_CCACHE_STATISTICS}"
+if [ "$CI" = "true" ]; then
+  hit_rate=$(ccache -s | grep "Hits:" | head -1 | sed 's/.*(\(.*\)%).*/\1/')
+  if [ "${hit_rate%.*}" -lt 75 ]; then
+      echo "::notice title=low ccache hitrate::Ccache hit-rate in $CONTAINER_NAME was $hit_rate%"
+  fi
+fi
 du -sh "${DEPENDS_DIR}"/*/
 du -sh "${PREVIOUS_RELEASES_DIR}"