services: Add Interplanetary File System service

Signed-off-by: Maximilian Güntner <code@klandest.in>

1 files changed, 111 insertions, 0 deletions

diff --git a/nixos/modules/services/network-filesystems/ipfs.nix b/nixos/modules/services/network-filesystems/ipfs.nix
new file mode 100644
index 000000000000..c26a70737033
--- /dev/null
+++ b/nixos/modules/services/network-filesystems/ipfs.nix
@@ -0,0 +1,111 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  inherit (pkgs) ipfs;
+
+  cfg = config.services.ipfs;
+
+  ipfsFlags = ''${if cfg.autoMigrate then "--migrate" else ""} ${if cfg.enableGC then "--enable-gc" else ""} ${toString cfg.extraFlags}'';
+
+in
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.ipfs = {
+
+      enable = mkEnableOption "Interplanetary File System";
+
+      user = mkOption {
+        type = types.str;
+        default = "ipfs";
+        description = "User under which the IPFS daemon runs";
+      };
+
+      group = mkOption {
+        type = types.str;
+        default = "ipfs";
+        description = "Group under which the IPFS daemon runs";
+      };
+
+      dataDir = mkOption {
+        type = types.str;
+        default = "/var/lib/ipfs";
+        description = "The data dir for IPFS";
+      };
+
+      autoMigrate = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether IPFS should try to migrate the file system automatically.
+        '';
+      };
+
+      enableGC = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to enable automatic garbage collection.
+        '';
+      };
+
+      extraFlags = mkOption {
+        type = types.listOf types.str;
+        description = "Extra flags passed to the IPFS daemon";
+        default = [];
+      };
+    };
+  };
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.ipfs ];
+
+    users.extraUsers = mkIf (cfg.user == "ipfs") {
+      ipfs = {
+        group = cfg.group;
+        home = cfg.dataDir;
+        createHome = false;
+        uid = config.ids.uids.ipfs;
+        description = "IPFS daemon user";
+      };
+    };
+
+    users.extraGroups = mkIf (cfg.group == "ipfs") {
+      ipfs = {
+        gid = config.ids.gids.ipfs;
+      };
+    };
+
+    systemd.services.ipfs = {
+      description = "IPFS Daemon";
+
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" "local-fs.target" ];
+      path  = [ pkgs.ipfs pkgs.su pkgs.bash ];
+
+      preStart =
+        ''
+          install -m 0755 -o ${cfg.user} -g ${cfg.group} -d ${cfg.dataDir}
+          if [[ ! -d ${cfg.dataDir}/.ipfs ]]; then
+            cd ${cfg.dataDir}
+            ${pkgs.su}/bin/su -s ${pkgs.bash}/bin/sh ${cfg.user} -c "${ipfs}/bin/ipfs init"
+          fi
+        '';
+
+      serviceConfig = {
+        ExecStart = "${ipfs}/bin/ipfs daemon ${ipfsFlags}";
+        User = cfg.user;
+        Group = cfg.group;
+        PermissionsStartOnly = true;
+      };
+    };
+  };
+}