From a89aa7f8037592e88c0f4a05473f6182561ce9b5 Mon Sep 17 00:00:00 2001
From: Oliver Smith <osmith@sysmocom.de>
Date: Tue, 16 Oct 2018 10:52:14 +0200
Subject: jenkins-common.sh: add docker_images_require()

This new function can be used on top of each *-test/jenkins.sh to
automatically build the required Docker images before starting a
testsuite.

The top-level Makefile should also be able to build all Docker images
on which a job depends. But in that Makefile the list of dependencies
can not be specified dynamically, as it will be necessary for OS#3268:
ttcn3-mgw-test may depend on osmo-mgw-latest or on osmo-mgw-master.

This will be used by Idbb708ab16cb71bab5069127945b63388222369e.

Related: OS#3268
Change-Id: I0afdf3400282634fca9b31d57eaeedd6b5c28aa1
---
 jenkins-common.sh | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/jenkins-common.sh b/jenkins-common.sh
index 515479f..f3d6c61 100644
--- a/jenkins-common.sh
+++ b/jenkins-common.sh
@@ -1,3 +1,22 @@
+docker_image_exists() {
+	test -n "$(docker images -q "$REPO_USER/$1")"
+}
+
+docker_images_require() {
+	for i in $@; do
+		# Trigger image build (cache will be used when up-to-date)
+		if [ -z "$NO_DOCKER_IMAGE_BUILD" ]; then
+			echo "Building image: $i (export NO_DOCKER_IMAGE_BUILD=1 to prevent this)"
+			make -C "../$i"
+		fi
+
+		# Detect missing images (build skipped/failure)
+		if ! docker_image_exists "$i"; then
+			echo "ERROR: missing image: $i"
+			exit 1
+		fi
+	done
+}
 
 network_create() {
 	NET=$1
-- 
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