nixos: add peerflix module

nixos/modules/misc/ids.nix

@@ -170,6 +170,7 @@
       scollector = 160;
       bosun = 161;
       kubernetes = 162;
+      peerflix = 163;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 

nixos/modules/module-list.nix

@@ -309,6 +309,7 @@
   ./services/system/nscd.nix
   ./services/system/uptimed.nix
   ./services/torrent/deluge.nix
+  ./services/torrent/peerflix.nix
   ./services/torrent/transmission.nix
   ./services/ttys/agetty.nix
   ./services/ttys/gpm.nix

nixos/modules/services/torrent/peerflix.nix

@@ -0,0 +1,63 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.peerflix;
+
+  configFile = pkgs.writeText "peerflix-config.json" ''
+    {
+      "connections": 50,
+      "tmp": "${cfg.downloadDir}"
+    }
+  '';
+
+in {
+
+  ###### interface
+
+  options.services.peerflix = {
+    enable = mkOption {
+      description = "Whether to enable graphite web frontend.";
+      default = false;
+      type = types.uniq types.bool;
+    };
+
+    stateDir = mkOption {
+      description = "Peerflix state directory.";
+      default = "/var/lib/peerflix";
+      type = types.path;
+    };
+
+    downloadDir = mkOption {
+      description = "Peerflix temporary download directory.";
+      default = "${cfg.stateDir}/torrents";
+      type = types.path;
+    };
+  };
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+    systemd.services.peerflix = {
+      description = "Peerflix Daemon";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network-interfaces.target" ];
+      environment.HOME = cfg.stateDir;
+
+      preStart = ''
+        mkdir -p "${cfg.stateDir}"/{torrents,.config/peerflix-server}
+        if [ "$(id -u)" = 0 ]; then chown -R peerflix "${cfg.stateDir}"; fi
+        ln -fs "${configFile}" "${cfg.stateDir}/.config/peerflix-server/config.json"
+      '';
+
+      serviceConfig = {
+        ExecStart = "${pkgs.nodePackages.peerflix-server}/bin/peerflix-server";
+        PermissionsStartOnly = true;
+        User = "peerflix";
+      };
+    };
+
+    users.extraUsers.peerflix.uid = config.ids.uids.peerflix;
+  };
+}

nixos/tests/peerflix.nix

@@ -0,0 +1,21 @@
+# This test runs peerflix and checks if peerflix starts
+
+import ./make-test.nix {
+  name = "peerflix";
+
+  nodes = {
+    peerflix =
+      { config, pkgs, ... }:
+        {
+          services.peerflix.enable = true;
+        };
+    };
+
+  testScript = ''
+    startAll;
+
+    $peerflix->waitForUnit("peerflix.service");
+    $peerflix->waitUntilSucceeds("curl localhost:9000");
+  '';
+
+}