move mirror-git from Hetzner to local, and automatically clone repos

1 files changed, 67 insertions, 0 deletions

diff --git a/ansible/files/mirror-git.sh b/ansible/files/mirror-git.sh
new file mode 100644
index 0000000..be52661
--- /dev/null
+++ b/ansible/files/mirror-git.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+LIST=/etc/mirror-git.list
+# LIST=mirror-list
+
+set -euo pipefail
+
+die() {
+	echo "$@" 1>&2
+	exit 1
+}
+
+setup_clone() {
+	local dir="$1"
+	local fromurl="$2"
+	local tourl="$3"
+
+	if [ ! -e "$dir" ]; then
+		git clone -q "$fromurl" "$dir"
+		cd "$dir"
+		git remote rename origin gitlab
+		git remote add origin "$tourl"
+	fi
+
+}
+
+current_branch() {
+	git rev-parse --abbrev-ref HEAD
+}
+
+uncommitted() {
+	git status --short | grep '^ M ' >/dev/null
+}
+
+ssh-keyscan gitlab.com git.liw.fi >"$HOME/.ssh/known_hosts"
+
+grep '^[^#]' "$LIST" |
+	while read -r fromurl tourl; do
+		dir="$HOME/mirrors/$tourl"
+		fromurl="https://gitlab.com/$fromurl.git"
+		tourl="ssh://git@git.liw.fi/$tourl"
+
+		echo
+		echo "=============================================="
+		echo "from: $fromurl"
+		echo "via : $dir"
+		echo "to  : $tourl"
+
+		setup_clone "$dir" "$fromurl" "$tourl"
+
+		cd "$dir"
+		case "$(current_branch)" in
+		master | main)
+			if uncommitted; then
+				die "there are uncommitted changes"
+			fi
+			git remote update --prune
+			git pull -q --rebase gitlab HEAD
+			git push -q origin HEAD
+			;;
+		*)
+			die "not in main or master branch"
+			;;
+		esac
+	done
+echo
+echo all mirror OK