From 7b5841c0397968a4e3e636384b78d19c93202815 Mon Sep 17 00:00:00 2001
From: Krzesimir Nowak <knowak@microsoft.com>
Date: Mon, 17 Feb 2025 09:05:21 +0100
Subject: [PATCH] pkg-auto: Add md5-metadata cache to reports

This adds an explicit generation of md5-metadata cache before any we
do any emerge invocations. That way we can have a copy of reports even
if emerge fails for some reason. But mostly the reason for this
copying is to consume the data later, outside the SDK container.
---
 pkg_auto/impl/inside_sdk_container_lib.sh | 29 ++++++++++++++++++-----
 pkg_auto/inside_sdk_container.sh          | 10 ++++++++
 2 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/pkg_auto/impl/inside_sdk_container_lib.sh b/pkg_auto/impl/inside_sdk_container_lib.sh
index 13f4e456ea..f578162b1e 100644
--- a/pkg_auto/impl/inside_sdk_container_lib.sh
+++ b/pkg_auto/impl/inside_sdk_container_lib.sh
@@ -98,16 +98,18 @@ function package_info_for_board() {
 function set_eo() {
     local dir=${1}; shift
 
-    SDK_EO="${dir}/sdk-emerge-output"
-    BOARD_EO="${dir}/board-emerge-output"
+    # shellcheck disable=SC2034 # used externally
+    declare -g EGENCACHE_W="${dir}/egencache-warnings"
+    declare -g SDK_EO="${dir}/sdk-emerge-output"
+    declare -g BOARD_EO="${dir}/board-emerge-output"
     # shellcheck disable=SC2034 # used indirectly in cat_eo_f
-    SDK_EO_F="${SDK_EO}-filtered"
+    declare -g SDK_EO_F="${SDK_EO}-filtered"
     # shellcheck disable=SC2034 # used indirectly in cat_eo_f
-    BOARD_EO_F="${BOARD_EO}-filtered"
+    declare -g BOARD_EO_F="${BOARD_EO}-filtered"
     # shellcheck disable=SC2034 # used indirectly in cat_eo_w
-    SDK_EO_W="${SDK_EO}-warnings"
+    declare -g SDK_EO_W="${SDK_EO}-warnings"
     # shellcheck disable=SC2034 # used indirectly in cat_eo_w
-    BOARD_EO_W="${BOARD_EO}-warnings"
+    declare -g BOARD_EO_W="${BOARD_EO}-warnings"
 }
 
 # Print the contents of file, path of which is stored in a variable of
@@ -484,4 +486,19 @@ function clean_empty_warning_files() {
     done
 }
 
+function generate_cache_for() {
+    local repo=${1}; shift
+
+    egencache --repo "${repo}" --update
+}
+
+function copy_cache_to_reports() {
+    local repo=${1}; shift
+    local reports_dir=${1}; shift
+
+    local repo_dir
+    repo_dir=$(portageq get_repo_path / "${repo}")
+    cp -a "${repo_dir}/metadata/md5-cache" "${reports_dir}/${repo}-cache"
+}
+
 fi
diff --git a/pkg_auto/inside_sdk_container.sh b/pkg_auto/inside_sdk_container.sh
index 8651917916..6e128a1992 100755
--- a/pkg_auto/inside_sdk_container.sh
+++ b/pkg_auto/inside_sdk_container.sh
@@ -65,6 +65,16 @@ mkdir -p "${reports_dir}"
 
 set_eo "${reports_dir}"
 
+echo 'Running egencache for portage-stable'
+generate_cache_for 'portage-stable' 2>"${EGENCACHE_W}"
+echo 'Running egencache for coreos-overlay'
+generate_cache_for 'coreos-overlay' 2>>"${EGENCACHE_W}"
+
+echo 'Copying portage-stable cache to reports'
+copy_cache_to_reports 'portage-stable' "${reports_dir}" 2>>"${EGENCACHE_W}"
+echo 'Copying coreos-overlay cache to reports'
+copy_cache_to_reports 'coreos-overlay' "${reports_dir}" 2>>"${EGENCACHE_W}"
+
 echo 'Running pretend-emerge to get complete report for SDK'
 package_info_for_sdk >"${SDK_EO}" 2>"${SDK_EO_W}"
 echo 'Running pretend-emerge to get complete report for board'