Adding container rename command.

Signed-off-by: Daniel Baumann <daniel.baumann@open-infrastructure.net>

1 files changed, 162 insertions, 0 deletions

diff --git a/lib/container/rename b/lib/container/rename
new file mode 100755
index 0000000..2d27615
--- /dev/null
+++ b/lib/container/rename
@@ -0,0 +1,162 @@
+#!/bin/sh
+
+# container-tools - Manage systemd-nspawn containers
+# Copyright (C) 2014-2016 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set -e
+
+COMMAND="$(basename ${0})"
+
+CONFIG="/etc/container-tools/config"
+MACHINES="/var/lib/machines"
+
+Parameters ()
+{
+	LONG_OPTIONS="force,new:,old:,"
+	OPTIONS="f,n:,o:,"
+
+	PARAMETERS="$(getopt --longoptions ${LONG_OPTIONS} --name=${COMMAND} --options ${OPTIONS} --shell sh -- ${@})"
+
+	if [ "${?}" != "0" ]
+	then
+		echo "'${COMMAND}': getopt exit" >&2
+		exit 1
+	fi
+
+	eval set -- "${PARAMETERS}"
+
+	while true
+	do
+		case "${1}" in
+			-f|--force)
+				FORCE="true"
+				shift 1
+				;;
+
+			-n|--new)
+				NEW="${2}"
+				shift 2
+				;;
+
+			-o|--old)
+				OLD="${2}"
+				shift 2
+				;;
+
+			--)
+				shift 1
+				break
+				;;
+
+			*)
+				echo "'${COMMAND}': getopt error" >&2
+				exit 1
+				;;
+		esac
+	done
+}
+
+Usage ()
+{
+	echo "Usage: container ${COMMAND} [-f|--force] -n|--new NAME -o|--old NAME" >&2
+	exit 1
+}
+
+Parameters "${@}"
+
+if [ -z "${OLD}" ] || [ -z "${NEW}" ]
+then
+	Usage
+fi
+
+if [ ! -e "${MACHINES}/${OLD}" ]
+then
+	echo "'${OLD}': no such container" >&2
+	exit 1
+fi
+
+if [ ! -e "${MACHINES}/${NEW}" ]
+then
+	echo "'${NEW}': container already exists" >&2
+	exit 1
+fi
+
+STATE="$(machinectl show ${OLD} 2>&1 | awk -F= '/^State=/ { print $2 }')"
+
+case "${STATE}" in
+	running)
+		echo "'${OLD}': container is started" >&2
+		exit 1
+		;;
+esac
+
+case "${FORCE}" in
+	true)
+		;;
+
+	*)
+		if container list --other | grep -qs "^${OLD}$"
+		then
+			echo -n "'${OLD}': rename remote container to '${NEW}' [y|N]? "
+			read FORCE
+
+			FORCE="$(echo ${FORCE} | tr [A-Z] [a-z])"
+
+			case "${FORCE}" in
+				y|yes)
+					;;
+
+				*)
+					exit 1
+					;;
+			esac
+		fi
+		;;
+esac
+
+# Run
+mv "${CONFIG}/${OLD}.conf" "${CONFIG}/${NEW}.conf"
+mv "${MACHINES}/${OLD}" "${MACHINES}/${NEW}"
+
+# Renaming bind mounts
+BIND="$(awk -F= '/^bind=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+if [ -n "${BIND}" ]
+then
+	BINDS="$(echo ${BIND} | sed -e 's|;| |g')"
+
+	for BIND in ${BINDS}
+	do
+		SOURCE_OLD="$(echo ${BIND} | awk -F: '{ print $1 }')"
+		SOURCE_NEW="$(echo ${SOURCE_OLD} | sed -e "s|${OLD}|${NEW}|g")"
+
+		if [ "${SOURCE_OLD}" != "${SOURCE_NEW}" ]
+		then
+			mv "${SOURCE_OLD}" "${SOURCE_NEW}"
+		fi
+
+		TARGET_OLD="$(echo ${BIND} | awk -F: '{ print $2 }')"
+		TARGET_NEW="$(echo ${TARGET_OLD} | sed -e "s|${OLD}|${NEW}|g")"
+
+		if [ "${TARGET_OLD}" != "${TARGET_NEW}" ]
+		then
+			mv "${MACHINES}/${NEW}/${TARGET_OLD}" "${MACHINES}/${NEW}/${TARGET_NEW}"
+		fi
+	done
+fi
+
+# Updating configuration file
+sed -i -e "s|${OLD}|${NEW}|g" "${CONFIG}/${NEW}.conf"