From 1a5e3a7836638caf2955b1bd68f891428c46a4a6 Mon Sep 17 00:00:00 2001
From: Andras Bacsai <andras.bacsai@gmail.com>
Date: Tue, 3 Oct 2023 15:48:07 +0200
Subject: [PATCH] sync volume script

---
 scripts/sync_volume.sh | 57 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 scripts/sync_volume.sh

diff --git a/scripts/sync_volume.sh b/scripts/sync_volume.sh
new file mode 100644
index 000000000..43631fdf7
--- /dev/null
+++ b/scripts/sync_volume.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+# Sync docker volumes between two servers
+
+VERSION="1.0.0"
+SOURCE=$1
+DESTINATION=$2
+set -e
+if [ -z "$SOURCE" ]; then
+    echo "Source server is not specified."
+    exit 1
+fi
+if [ -z "$DESTINATION" ]; then
+    echo "Destination server is not specified."
+    exit 1
+fi
+
+SOURCE_USER=$(echo $SOURCE | cut -d@ -f1)
+SOURCE_SERVER=$(echo $SOURCE | cut -d: -f1 | cut -d@ -f2)
+SOURCE_PORT=$(echo $SOURCE | cut -d: -f2 | cut -d/ -f1)
+SOURCE_VOLUME_NAME=$(echo $SOURCE | cut -d/ -f2)
+
+if ! [[ "$SOURCE_PORT" =~ ^[0-9]+$ ]]; then
+    echo "Invalid source port: $SOURCE_PORT"
+    exit 1
+fi
+
+DESTINATION_USER=$(echo $DESTINATION | cut -d@ -f1)
+DESTINATION_SERVER=$(echo $DESTINATION | cut -d: -f1 | cut -d@ -f2)
+DESTINATION_PORT=$(echo $DESTINATION | cut -d: -f2 | cut -d/ -f1)
+DESTINATION_VOLUME_NAME=$(echo $DESTINATION | cut -d/ -f2)
+
+if ! [[ "$DESTINATION_PORT" =~ ^[0-9]+$ ]]; then
+    echo "Invalid destination port: $DESTINATION_PORT"
+    exit 1
+fi
+
+echo "Generating backup file to ./$SOURCE_VOLUME_NAME.tgz"
+ssh -p $SOURCE_PORT $SOURCE_USER@$SOURCE_SERVER "docker  run -v $SOURCE_VOLUME_NAME:/volume --rm --log-driver none loomchild/volume-backup backup -c pigz -v" >./$SOURCE_VOLUME_NAME.tgz
+echo ""
+if [ -f "./$SOURCE_VOLUME_NAME.tgz" ]; then
+    echo "Uploading backup file to $DESTINATION_SERVER:~/$DESTINATION_VOLUME_NAME.tgz"
+    scp -P $DESTINATION_PORT ./$SOURCE_VOLUME_NAME.tgz $DESTINATION_USER@$DESTINATION_SERVER:~/$DESTINATION_VOLUME_NAME.tgz
+    echo ""
+    echo "Restoring backup file on remote ($DESTINATION_SERVER:/~/$DESTINATION_VOLUME_NAME.tgz)"
+    ssh -p $DESTINATION_PORT $DESTINATION_USER@$DESTINATION_SERVER "docker run -i -v $DESTINATION_VOLUME_NAME:/volume --log-driver none --rm loomchild/volume-backup restore -c pigz -vf < ~/$DESTINATION_VOLUME_NAME.tgz"
+    echo ""
+    echo "Deleting backup file on remote ($DESTINATION_SERVER:/~/$DESTINATION_VOLUME_NAME.tgz)"
+    ssh -p $DESTINATION_PORT $DESTINATION_USER@$DESTINATION_SERVER "rm ~/$DESTINATION_VOLUME_NAME.tgz"
+
+    echo ""
+    echo "Local file ./$SOURCE_VOLUME_NAME.tgz is not deleted."
+
+    echo ""
+    echo "WARNING: If you are copying a database volume, you need to set the right users/passwords on the destination service's environment variables."
+    echo "Why? Because we are copying the volume as-is, so the database credentials will bethe same as on the source volume."
+fi
+