Initial commit

module.nix

@@ -0,0 +1,63 @@
+self: { pkgs, config, lib, ... }: 
+let
+  inherit (lib)
+    mkOption
+    mkEnableOption
+    mkIf
+    types
+  ;
+
+  cfg = config.services.synapse-revitalization;
+in {
+  options.services.synapse-revitalization = {
+    enable = mkEnableOption "Enable synapse-revitalization service";
+    adminAuthTokenFile = mkOption {
+      type = types.path;
+      description = "File containing admin user's authentication token";
+    };
+    serverKeyFile = mkOption {
+      type = types.path;
+      description = "Synapse server signing key file";
+      default = "/var/lib/matrix-synapse/homeserver.signing.key";
+    };
+    serverName = mkOption {
+      type = types.str;
+      description = "Synapse server's name";
+      default = config.services.matrix-synapse.settings.server_name;
+    };
+    serverFQDN = mkOption {
+      type = types.str;
+      description = "Synapse server's fqdn";
+    };
+    package = self.packages.x86_64-linux.synapse-revitalization;
+  };
+
+  config = mkIf (cfg.enable) {
+    systemd.services."synapse-revitalization" =
+    let pkg = "${pkgs.synapse-revitalization}/bin/synapse-revitalization";
+      script = pkgs.writeShellScript "synapse-revitalization-script" ''
+        journalctl -f -u matrix-synapse -o cat |
+        while read -r line; do
+          echo "$line" | grep "as we're not in the room" && ${pkg} "$line" &
+          echo "$line" | grep "Ignoring PDU for unknown room_id" && ${pkg} "$line" &
+        done
+      '';
+    in {
+      enable = true;
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        Type = "simple";
+        User = "root";
+        Group = "root";
+        ExecStart = script;
+        Restart = "always";
+      };
+      environment = {
+        "SYNAPSE_REVITALIZATION_ADMIN_AUTH_TOKEN_FILE" = cfg.adminAuthTokenFile;
+        "SYNAPSE_REVITALIZATION_SERVER_KEY_FILE" = cfg.serverKeyFile;
+        "SYNAPSE_REVITALIZATION_SERVER_NAME" = cfg.serverName;
+        "SYNAPSE_REVITALIZATION_SERVER_ADDRESS" = cfg.serverFQDN;
+      };
+    };
+  };
+}