setup backups for mail

1 files changed, 26 insertions, 14 deletions

diff --git a/modules/backup/snapshot.nix b/modules/backup/snapshot.nix
index 91076cf..a1fba73 100644
--- a/modules/backup/snapshot.nix
+++ b/modules/backup/snapshot.nix
@@ -6,17 +6,25 @@
   ...
 }:
 let
-  instanceType = lib.types.submodule {
+  snapshotType = lib.types.submodule {
     options = {
-      path = lib.mkOption {
-        type = lib.types.str;
-        default = "/persistent";
-        description = "snapshoted path for kopia instance.";
+      paths = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ ];
+        description = "snapshoted paths";
       };
       schedule = lib.mkOption {
         type = lib.types.str;
-        default = "daily";
-        description = "Snapshot schedule for the Kopia instance.";
+        default = "*-*-* 4:00:00";
+        description = "Snapshot schedule";
+      };
+    };
+  };
+
+  instanceType = lib.types.submodule {
+    options = {
+      snapshots = lib.mkOption {
+        type = snapshotType;
       };
     };
   };
@@ -37,9 +45,11 @@ in
             "kopia-repository-${name}.service"
           ];
           after = [ "kopia-repository-${name}.service" ];
-          script = ''
-            ${pkgs.kopia}/bin/kopia snapshot create ${instance.path} --description "Snapshot for ${name}"
-          '';
+          script = lib.strings.concatLines (
+            lib.lists.forEach instance.snapshots.paths (x: ''
+              ${pkgs.kopia}/bin/kopia snapshot create ${x} --description "Snapshot for ${name}"
+            '')
+          );
           serviceConfig = {
             Type = "simple";
             User = "${instance.user}";
@@ -49,13 +59,15 @@ in
             Restart = "on-failure";
             # wait 30 seconds before restarting
             RestartSec = "30";
-            # limit the number of restarts to 5 in 1 day
-            StartLimitInterval = "1d";
-            StartLimitBurst = "5";
             # lower priority
             Nice = "-19";
             IOSchedulingClass = "idle";
           };
+          unitConfig = {
+            # limit the number of restarts to 5 in 1 day
+            StartLimitInterval = "1d";
+            StartLimitBurst = "5";
+          };
         };
       mkSnapshotTimer =
         name: instance:
@@ -63,7 +75,7 @@ in
           description = "Kopia S3 snapshot timer";
           wantedBy = [ "timers.target" ];
           timerConfig = {
-            OnCalendar = instance.schedule;
+            OnCalendar = instance.snapshots.schedule;
           };
         };
     in