From 24e1fd05ead6daf0acda29ba30d22441a6915955 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 11 Jun 2018 16:29:30 +0200
Subject: lib/common-functions: remove_old_package_versions(): read bpir_ids
 from stdin, do not fail on non-existend action files

---
 bin/copy-to-build-support |  4 +---
 bin/return-assignment     |  5 +----
 lib/common-functions      | 17 ++++++++++-------
 3 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/bin/copy-to-build-support b/bin/copy-to-build-support
index 1840855..a60f058 100755
--- a/bin/copy-to-build-support
+++ b/bin/copy-to-build-support
@@ -187,9 +187,7 @@ if [ -s "${tmp_dir}/mysql-command" ]; then
   mysql_run_query < \
     "${tmp_dir}/mysql-command" | \
     sort -u | \
-    while read -r bpir_id; do
-      remove_old_package_versions "${bpir_id}"
-    done
+    remove_old_package_versions
 fi
 
 if [ -w "$1" ]; then
diff --git a/bin/return-assignment b/bin/return-assignment
index c55f61b..220d928 100755
--- a/bin/return-assignment
+++ b/bin/return-assignment
@@ -722,7 +722,4 @@ trigger_mirror_refreshs
 } | \
   mysql_run_query | \
   sort -u | \
-  while read -r bpir_id; do
-    # TODO: this needs to get faster, it is currently the bottleneck
-    remove_old_package_versions "${bpir_id}"
-  done
+  remove_old_package_versions
diff --git a/lib/common-functions b/lib/common-functions
index 77f2417..d8da4a7 100755
--- a/lib/common-functions
+++ b/lib/common-functions
@@ -112,11 +112,12 @@ ls_master_mirror() {
 
 }
 
-# remove_old_package_versions $binary_package_in_repository_id_1 $binary_package_in_repository_id_2 ...
+# remove_old_package_versions
 
-# removes all older versions of the given packages from all repositories
-# less[1] stable than the current repository, as well as any different
-# version of the same package from equally[2] stable repositories
+# removes all older versions of the packages given at stdin (by bpir.id)
+# from all repositories less[1] stable than the current repository, as
+# well as any different version of the same package from equally[2]
+# stable repositories
 
 # 1] determined by `repository_stability_relations`
 # 2] identical `repositories`.`stability`
@@ -127,7 +128,7 @@ remove_old_package_versions() {
     tmp_dir=$(mktemp -d 'tmp.common-functions.remove_old_package_versions.XXXXXXXXXX' --tmpdir)
     trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
-    for bpir_id in "$@"; do
+    while read -r bpir_id; do
 
       # shellcheck disable=SC2016
       {
@@ -195,8 +196,10 @@ remove_old_package_versions() {
     done
 
     for file in 'repo-removes' 'sftp-remove' 'db-removes'; do
-      sort -u "${tmp_dir}/${file}" | \
-        sponge "${tmp_dir}/${file}"
+      if [ -s "${tmp_dir}/${file}" ]; then
+        sort -u "${tmp_dir}/${file}" | \
+          sponge "${tmp_dir}/${file}"
+      fi
     done
 
     # repo-remove packages
-- 
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