Add script to automate the update process more

update_cloudlog.sh

@@ -0,0 +1,86 @@
+#!/bin/bash
+# Cloudlog update script
+#
+# Pulls changes from Git remote and re-sets appropriate directory ownership.
+# Can be run manually or on a schedule using Cron.
+#
+# Please check the DIR_OWNERSHIP variable carefully to make sure it is
+# appropriately set for your system!
+
+# The user and group that own the CLOUDLOG_SUBDIR directories. Passed to 'chown' as-is.
+DIR_OWNERSHIP="root:www-data"
+# The list of directories that need to have ownership restored after a git pull
+declare -a CLOUDLOG_SUBDIRS=("application/config" "assets/qslcard" "backup" "updates" "uploads")
+# The name of the Git remote to fetch/pull from
+GIT_REMOTE="origin"
+# If true, pull from the HEAD of the configured origin, otherwise the latest tag
+BLEEDING_EDGE="true"
+# If true, restore directory ownership on CLOUDLOG_SUBDIRS after a git pull
+RESTORE_OWNERSHIP="true"
+
+check_working_dir() {
+	# Quick sanity check to make sure that pwd looks like a Cloudlog install
+	if [[ ! -d "$(pwd)/application" ]]
+	then
+		echo "$(pwd) doesn't look like a Cloudlog install directory! Stopping here."
+		exit 1
+	fi
+}
+
+fast_forward_to_tag() {
+	# Find the latest tag on the current branch
+	# See https://git-scm.com/docs/git-describe for details on retrieving tags
+	LATEST_TAG=$(git describe --tags --abbrev=0)
+	echo "Fast-forwarding to latest tag: $LATEST_TAG..."
+	if git pull $GIT_REMOTE $LATEST_TAG ; then
+		echo "Fast-forward finished successfully."
+	else
+		echo "Fast-forward failed; stopping here."
+		exit 2
+	fi
+}
+
+fast_forward_to_head() {
+	echo "Fast-forwarding to HEAD (bleeding-edge)..."
+	if git pull $GIT_REMOTE ; then
+		echo "Fast-forward finished successfully".
+	else
+		echo "Fast-forward failed; stopping here."
+		exit 3
+	fi
+}
+
+restore_ownership() {
+	for dir in "${CLOUDLOG_SUBDIRS[@]}"; do
+		echo "Setting ownership as $DIR_OWNERSHIP on $dir"
+		chown -R $DIR_OWNERSHIP $(pwd)/$dir
+	done
+}
+
+
+echo "Cloudlog update started"
+echo "-----------------------"
+echo "Using $(pwd) as working directory"
+
+check_working_dir
+
+# Fetch the latest changes from the master branch
+echo "Fetching changes from remote..."
+if git fetch $GIT_REMOTE --tags ; then
+	echo "Fetched latest changes successfully"
+else
+	echo "Fetch failed; stopping here."
+	exit 4
+fi
+
+if [ "$BLEEDING_EDGE" = true ]; then
+	fast_forward_to_head
+else
+	fast_forward_to_tag
+fi
+
+if [ "$RESTORE_OWNERSHIP" = true ]; then
+	restore_ownership
+fi
+
+echo "Cloudlog update finished"