1 files changed, 112 insertions, 0 deletions
diff --git a/src/pmdk/utils/docker/pull-or-rebuild-image.sh b/src/pmdk/utils/docker/pull-or-rebuild-image.sh
new file mode 100755
index 000000000..a3a23cdd1
--- /dev/null
+++ b/src/pmdk/utils/docker/pull-or-rebuild-image.sh
@@ -0,0 +1,112 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2016-2020, Intel Corporation
+
+#
+# pull-or-rebuild-image.sh - rebuilds the Docker image used in the
+#                            current Travis build if necessary.
+#
+# The script rebuilds the Docker image if the Dockerfile for the current
+# OS version (Dockerfile.${OS}-${OS_VER}) or any .sh script from the directory
+# with Dockerfiles were modified and committed.
+#
+# If the Travis build is not of the "pull_request" type (i.e. in case of
+# merge after pull_request) and it succeed, the Docker image should be pushed
+# to the Docker Hub repository. An empty file is created to signal that to
+# further scripts.
+#
+# If the Docker image does not have to be rebuilt, it will be pulled from
+# Docker Hub.
+#
+
+set -e
+
+source $(dirname $0)/set-ci-vars.sh
+source $(dirname $0)/set-vars.sh
+
+if [[ "$CI_EVENT_TYPE" != "cron" && "$CI_BRANCH" != "coverity_scan" \
+	&& "$COVERITY" -eq 1 ]]; then
+	echo "INFO: Skip Coverity scan job if build is triggered neither by " \
+		"'cron' nor by a push to 'coverity_scan' branch"
+	exit 0
+fi
+
+if [[ ( "$CI_EVENT_TYPE" == "cron" || "$CI_BRANCH" == "coverity_scan" )\
+	&& "$COVERITY" -ne 1 ]]; then
+	echo "INFO: Skip regular jobs if build is triggered either by 'cron'" \
+		" or by a push to 'coverity_scan' branch"
+	exit 0
+fi
+
+if [[ -z "$OS" || -z "$OS_VER" ]]; then
+	echo "ERROR: The variables OS and OS_VER have to be set properly " \
+             "(eg. OS=ubuntu, OS_VER=16.04)."
+	exit 1
+fi
+
+if [[ -z "$HOST_WORKDIR" ]]; then
+	echo "ERROR: The variable HOST_WORKDIR has to contain a path to " \
+		"the root of the PMDK project on the host machine"
+	exit 1
+fi
+
+# Find all the commits for the current build
+if [ -n "$CI_COMMIT_RANGE" ]; then
+	commits=$(git rev-list $CI_COMMIT_RANGE)
+else
+	commits=$CI_COMMIT
+fi
+
+echo "Commits in the commit range:"
+for commit in $commits; do echo $commit; done
+
+# Get the list of files modified by the commits
+files=$(for commit in $commits; do git diff-tree --no-commit-id --name-only \
+	-r $commit; done | sort -u)
+echo "Files modified within the commit range:"
+for file in $files; do echo $file; done
+
+# Path to directory with Dockerfiles and image building scripts
+images_dir_name=images
+base_dir=utils/docker/$images_dir_name
+
+# Check if committed file modifications require the Docker image to be rebuilt
+for file in $files; do
+	# Check if modified files are relevant to the current build
+	if [[ $file =~ ^($base_dir)\/Dockerfile\.($OS)-($OS_VER)$ ]] \
+		|| [[ $file =~ ^($base_dir)\/.*\.sh$ ]]
+	then
+		# Rebuild Docker image for the current OS version
+		echo "Rebuilding the Docker image for the Dockerfile.$OS-$OS_VER"
+		pushd $images_dir_name
+		./build-image.sh ${OS}-${OS_VER} ${CI_CPU_ARCH}
+		popd
+
+		# Check if the image has to be pushed to Docker Hub
+		# (i.e. the build is triggered by commits to the $GITHUB_REPO
+		# repository's stable-* or master branch, and the Travis build is not
+		# of the "pull_request" type). In that case, create the empty
+		# file.
+		if [[ "$CI_REPO_SLUG" == "$GITHUB_REPO" \
+			&& ($CI_BRANCH == stable-* || $CI_BRANCH == devel-* || $CI_BRANCH == master) \
+			&& $CI_EVENT_TYPE != "pull_request" \
+			&& $PUSH_IMAGE == "1" ]]
+		then
+			echo "The image will be pushed to Docker Hub"
+			touch $CI_FILE_PUSH_IMAGE_TO_REPO
+		else
+			echo "Skip pushing the image to Docker Hub"
+		fi
+
+		if [[ $PUSH_IMAGE == "1" ]]
+		then
+			echo "Skip build package check if image has to be pushed"
+			touch $CI_FILE_SKIP_BUILD_PKG_CHECK
+		fi
+		exit 0
+	fi
+done
+
+# Getting here means rebuilding the Docker image is not required.
+# Pull the image from Docker Hub.
+docker pull ${DOCKERHUB_REPO}:1.10-${OS}-${OS_VER}-${CI_CPU_ARCH}