From 661201a53dce2b2133228509a9f3cc5095ef00d1 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Wed, 7 Apr 2021 09:10:15 +0200
Subject: lib/mysql-functions: fail early, if
 mysql_retrieve_static_information() did not find an expected variable in the
 database

---
 lib/mysql-functions | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'lib')

diff --git a/lib/mysql-functions b/lib/mysql-functions
index 1706c11..6a6a1e7 100755
--- a/lib/mysql-functions
+++ b/lib/mysql-functions
@@ -1440,6 +1440,7 @@ mysql_join_dependencies_install_target_providers_with_versions() {
 # - ids of compressions -> $compression_ids__$compression
 # - $package_compression_suffix_regex
 mysql_retrieve_static_information() {
+  local found_something
   eval "$(
     {
       printf 'SELECT CONCAT('
@@ -1514,8 +1515,15 @@ mysql_retrieve_static_information() {
       printf '"\\""'
       printf ') FROM `compressions`;\n'
     } \
+    | sed '
+      s@^\(SELECT \)\(.*\)$@SELECT "found_something=false;"; \1"found_something=true; ",\2 SELECT "if ! ${found_something}; then >\&2 echo \\"Some variable was not found in the database.\\"; exit 1; fi;";@
+    ' \
     | mysql_run_query
   )"
+  if ! ${found_something}; then
+    >&2 echo 'No variables were found in the database.'
+    exit 1
+  fi
 }
 
 # mysql_query_and_delete_unneeded_binary_packages
-- 
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