1 files changed, 25 insertions, 0 deletions
diff --git a/bin/ping-from-slave b/bin/ping-from-slave
new file mode 100755
index 0000000..afaf018
--- /dev/null
+++ b/bin/ping-from-slave
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# should be called periodically on the build-master from the slaves to
+#  - report any update on the build process
+#  - show that the build is still running
+#  - get notified by the build master if the build is not necessary anymore
+
+# shellcheck source=conf/default.conf
+. "${0%/*}/../conf/default.conf"
+
+# TODO: receive/save some statistics about current build
+
+if [ "$(
+  # shellcheck disable=SC2016,SC2154
+  {
+    printf 'SELECT count(*) FROM `build_slaves`'
+    mysql_join_build_slaves_build_assignments
+    printf ' WHERE `build_slaves`.`name`=from_base64("%s");\n' \
+      "$(printf '%s' "${slave}" | base64 -w0)"
+  } | \
+    mysql_run_query
+  )" -ne 1 ]; then
+  >&2 echo 'You do not build anything currently - abort whatever you are doing.'
+  exit 2
+fi