1 files changed, 42 insertions, 0 deletions
diff --git a/sandcastle/backup.sh b/sandcastle/backup.sh
new file mode 100755
index 0000000..3ad3972
--- /dev/null
+++ b/sandcastle/backup.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+set -eu
+
+usage () {
+  echo
+  echo Usage: ./backup.sh [-h,  --help]
+  echo 
+  echo This utility extracts a TAR backup of data and logs
+  echo produced by the Taler services running inside this Docker
+  echo Compose setup.  The backup is saved in /tmp/YYYY-MM-DD-taler-backup.tar
+}
+
+for helpOpt in "-h" "--help"; do
+  if test "$helpOpt" = "${1:-}"; then
+    usage
+    exit 0
+  fi
+done
+
+if ! which docker > /dev/null; then
+  echo docker not found.
+  exit 1
+fi
+
+BACKUP_FILE="/tmp/$(date +%Y-%m-%d)-taler-backup.tar"
+
+if test -a $BACKUP_FILE; then 
+  echo "Backup file $BACKUP_FILE exists already, please move it and run the script again."
+  exit 3 
+fi
+
+# 'chown' should still help rootful runs to
+# have the TAR owned by the user invoking the command.
+docker run \
+  -v /tmp:/tmp \
+  -v demo_talerdata:/taler-data \
+  -v demo_talerlogs:/taler-logs \
+  -it debian:stable \
+  /bin/bash -c "tar --no-same-owner --no-same-permissions -c -f ${BACKUP_FILE} /taler-data /taler-logs" > /dev/null
+
+echo Backup at: ${BACKUP_FILE}