From 00324171f1b50cc2cff14b55b1000cfe170ee915 Mon Sep 17 00:00:00 2001
From: Niels de Vos <ndevos@redhat.com>
Date: Fri, 24 Apr 2020 11:17:51 +0200
Subject: [PATCH] scripts: add build_step logging functions

Signed-off-by: Niels de Vos <ndevos@redhat.com>
(cherry picked from commit 52fa4f10dac92b729011e0d5760dd468676a6d85)
---
 scripts/build_step.inc.sh | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 scripts/build_step.inc.sh

diff --git a/scripts/build_step.inc.sh b/scripts/build_step.inc.sh
new file mode 100644
index 000000000..6003cfa35
--- /dev/null
+++ b/scripts/build_step.inc.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+# variables used for logging build steps, use build_step() and
+# build_step_done() for setting or clearing them.
+BUILD_STEP_FILE="$(mktemp)"
+BUILD_STEP_PID=''
+BUILD_STEP_DELAY='1m'
+
+build_step_log() {
+	echo "$(date) -- ${*}"
+}
+
+# start a build step, and log every
+build_step() {
+	echo "${*}" > "${BUILD_STEP_FILE}"
+	build_step_log "starting: $(cat "${BUILD_STEP_FILE}")"
+	[ -n "${BUILD_STEP_PID}" ] && return
+	while sleep "${BUILD_STEP_DELAY}"
+	do
+		build_step_log "running: $(cat "${BUILD_STEP_FILE}")"
+	done & BUILD_STEP_PID=${!}
+}
+
+# clean up the logging of build steps
+build_steps_cleanup() {
+	[ -n "${BUILD_STEP_PID}" ] && kill "${BUILD_STEP_PID}"
+	rm -f "${BUILD_STEP_FILE}"
+	BUILD_STEP_PID=''
+}
+
+# automatically stop build step logging and cleanup temporary file
+trap build_steps_cleanup EXIT
+