added helper scripts to execute commands and restore buildings

exec_in_container.sh

+#!/bin/bash
+
+# Assign possible arguments
+SCRIPT_NAME=$0
+CONTAINER_NAME=$1
+COMMAND=${*:2}
+
+# Print usage
+usage() {
+  echo -n "
+  This script executes a command in a container based on its name.
+
+  USAGE:  $0 [CONTAINER_NAME] [COMMAND]
+
+"
+}
+
+execute_command_in_container() {
+  matched_ids=$(docker ps -f name=$CONTAINER_NAME -q)
+  count_ids=$(echo "$matched_ids" | wc -l)
+  if [ $count_ids -eq 1 ];
+  then
+    docker exec -it $matched_ids $(echo $COMMAND)
+  else
+    echo "Found $count_ids ids matching name $CONTAINER_NAME, choose unique name"
+  fi
+
+}
+
+# Script
+if [ "$#" -ge 2 ];
+then
+  execute_command_in_container
+else
+  usage
+fi
+
+

restore_building_backups.sh

+#!/bin/bash
+
+# Assign possible arguments
+SCRIPT_NAME=$0
+BUILDING_NAME=$1
+NEW_NODE=$2
+
+# Print usage
+usage() {
+  echo -n "
+  This script restores backuped volumes of a building on a specified machine.
+
+  USAGE:  $0 [BUILDING_NAME] [NEW_NODE]
+
+"
+}
+
+# Disable all services matching building
+stop_building_services() {
+  service_ids=$(docker service ls -q -f label=backup=$BUILDING_NAME)
+  echo "Halting backuped services of building $BUILDING_NAME"
+  for sid in $service_ids ; do
+    docker service update --replicas=0 $sid
+  done
+}
+
+# Enable all services matching building
+restore_building_services() {
+  service_ids=$(docker service ls -q -f label=backup=$BUILDING_NAME)
+  echo "Restoring services of building $BUILDING_NAME"
+  for sid in $service_ids ; do
+    docker service update --replicas=1 $sid
+  done
+}
+
+# Execute restore on new node
+restore_backup() {
+  echo "restore"  
+}
+
+# Assign building label to node
+add_building_label() {
+  echo "Assigning building label $BUILDING_NAME to machine $NEW_NODE"
+  docker node update --label-add building=$BUILDING_NAME $NEW_NODE
+}
+
+restore_volumes() {
+  echo "Restoring backups to volumes"
+  # set variables for backup container restore
+  CONTAINER_NAME=backup
+  COMMAND=restore
+
+  # remember previous node and switch docker-machine context to new node
+  OLD_NODE=$(docker-machine active)
+  NODE_USED=$?
+  eval "$(docker-machine env $NEW_NODE)"
+
+  matched_ids=$(docker ps -f name=$CONTAINER_NAME -q)
+  count_ids=$(echo "$matched_ids" | wc -l)
+  if [ $count_ids -eq 1 ];
+  then
+    docker exec -it $matched_ids $(echo $COMMAND)
+  else
+    echo "Found $count_ids ids matching name $CONTAINER_NAME, choose unique name"
+  fi
+
+  # switch docker-machine context back to old host or clear env
+  if [ $NODE_USED -eq 0 ]; then
+    eval "$(docker-machine env $OLD_NODE)"
+  else
+    eval "$(docker-machine env -u)"
+  fi
+}
+
+# Script
+if [ "$#" -eq 2 ];
+then
+  stop_building_services
+  add_building_label
+  echo "Waiting until containers start..."
+  sleep 7;
+  restore_volumes
+  restore_building_services
+else
+  usage
+fi
+
+