bin/get-assignment: check arguments; cleanup

1 files changed, 29 insertions, 11 deletions

diff --git a/bin/get-assignment b/bin/get-assignment
index 40acdb2..4e9b040 100755
--- a/bin/get-assignment
+++ b/bin/get-assignment
@@ -11,6 +11,7 @@
 #     but currently none has all its dependencies ready
 #  3: come back after the next run of get-package-updates - currently
 #     there are no pending packages
+#  4: wrong number of arguments
 
 # shellcheck disable=SC2119,SC2120
 
@@ -100,6 +101,23 @@ arch=$(
     base64 -w0
 )
 shift
+if [ $# -eq 1 ]; then
+  requested=$(
+    printf '%s' "$1" | \
+      base64 -w0
+  )
+  shift
+else
+  requested=''
+fi
+# shellcheck disable=SC2016
+if [ $# -ne 0 ]; then
+  >&2 echo '"get-assignment" was called with wrong number of arguments.'
+  >&2 echo 'call either:'
+  >&2 echo '  get-assignment $arch'
+  >&2 echo '  get-assignment $arch $favourite_package'
+  exit 4
+fi
 
 # if we're building something already, hand it out (again)
 currently_building=$(
@@ -145,11 +163,12 @@ next_building=$(
     printf 'SELECT `q`.`ba_id` FROM'
     printf '('
       printf 'SELECT '
-      printf '`package_sources`.`pkgbase`=from_base64("%s") AS `requested`,' \
-        "$(
-          printf '%s' "$1" | \
-            base64 -w0
-        )"
+      if [ -n "${requested}" ]; then
+        printf '`package_sources`.`pkgbase`=from_base64("%s") AS `requested`,' \
+          "${requested}"
+      else
+        printf '0 AS `requested`,'
+      fi
       printf 'IFNULL(`toolchain_query`.`priority`,3) AS `toolchain_priority`,'
       # 0: in toolchain, never blocked
       # 1: in toolchain, unblocked exists, not-yet-built
@@ -251,12 +270,11 @@ next_building=$(
         printf ' WHERE `build_slaves`.`currently_building`=`build_assignments`.`id`'
       printf ') AND ('
         printf '`build_assignments`.`is_blocked` IS NULL'
-        printf ' OR'
-        printf ' `package_sources`.`pkgbase`=from_base64("%s")' \
-          "$(
-            printf '%s' "$1" | \
-              base64 -w0
-          )"
+        if [ -n "${requested}" ]; then
+          printf ' OR'
+          printf ' `package_sources`.`pkgbase`=from_base64("%s")' \
+            "${requested}"
+        fi
       printf ') AND ('
         mysql_query_is_part_of_loop '`build_assignments`.`id`'
         printf ' OR NOT '