From 8c18ec5341931ef9387ce97ee74e83b4f9b6ad61 Mon Sep 17 00:00:00 2001
From: Andreas Zweili <andreas@zweili.ch>
Date: Sat, 12 Nov 2022 15:07:39 +0100
Subject: [PATCH] Add a module for utf8mb4 restic db dumps

---
 .../default.nix                               | 59 +++++++++++++++++++
 systems/nextcloud/default.nix                 |  2 +-
 2 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 modules/restic-server-mysqlutf8-client/default.nix

diff --git a/modules/restic-server-mysqlutf8-client/default.nix b/modules/restic-server-mysqlutf8-client/default.nix
new file mode 100644
index 0000000..06f3917
--- /dev/null
+++ b/modules/restic-server-mysqlutf8-client/default.nix
@@ -0,0 +1,59 @@
+{ custom
+, path
+, tag ? "home-dir"
+, time
+}: { config, pkgs, ... }:
+{
+  imports = [
+    (import "${custom.inputs.self}/modules/telegram-notifications" { inherit custom; })
+  ];
+
+  age.secrets.resticKey.file = "${custom.inputs.self}/scrts/restic.key.age";
+
+  systemd.timers."restic-backups" = {
+    wantedBy = [ "timers.target" ];
+    partOf = [ "restic-backups.service" ];
+    timerConfig = {
+      OnCalendar = time;
+    };
+  };
+
+  systemd.services."restic-backups" = {
+    serviceConfig = {
+      User = "root";
+      Type = "oneshot";
+    };
+    environment = {
+      RESTIC_PASSWORD_FILE = config.age.secrets.resticKey.path;
+      RESTIC_REPOSITORY = "rest:http://10.7.89.30:8000";
+    };
+    onFailure = [ "unit-status-telegram@%n.service" ];
+    script = ''
+      ${pkgs.restic}/bin/restic backup \
+        --exclude-file=${custom.inputs.self}/modules/restic/excludes.txt \
+        --tag ${tag} ${path}
+
+      ${pkgs.mariadb}/bin/mysqldump --default-character-set=utf8mb4 --single-transaction --all-databases | \
+      ${pkgs.restic}/bin/restic backup \
+        --tag mariadb \
+        --stdin \
+        --stdin-filename all_databases.sql
+
+      ${pkgs.restic}/bin/restic forget \
+        --tag home-dir \
+        --host ${config.networking.hostName} \
+        --keep-daily 7 \
+        --keep-weekly 5 \
+        --keep-monthly 12 \
+        --keep-yearly 75
+
+      ${pkgs.restic}/bin/restic forget \
+        --tag mariadb \
+        --host ${config.networking.hostName} \
+        --keep-daily 7 \
+        --keep-weekly 5 \
+        --keep-monthly 12 \
+        --keep-yearly 75
+    '';
+  };
+}
diff --git a/systems/nextcloud/default.nix b/systems/nextcloud/default.nix
index 4bf7370..8abd85a 100644
--- a/systems/nextcloud/default.nix
+++ b/systems/nextcloud/default.nix
@@ -8,7 +8,7 @@ in
       ip = "10.7.89.103";
       inherit custom hostname;
     })
-    (import "${custom.inputs.self}/modules/restic-server-mysql-client" {
+    (import "${custom.inputs.self}/modules/restic-server-mysqlutf8-client" {
       path = "/home/andreas";
       time = "01:30"; inherit custom;
     })