Add services for Bitcoin, Dash, Parity and Monero

nixos/modules/misc/ids.nix

@@ -289,6 +289,10 @@
       rpc = 271;
       geoip = 272;
       fcron = 273;
+      bitcoin = 275;
+      dash = 276;
+      parity = 277;
+      monero = 278;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 
@@ -547,6 +551,10 @@
       #rpc = 271; # unused
       #geoip = 272; # unused
       fcron = 273;
+      bitcoin = 275;
+      dash = 276;
+      parity = 277;
+      monero = 278;
 
       # When adding a gid, make sure it doesn't match an existing
       # uid. Users and groups with the same name should have equal

nixos/modules/module-list.nix

@@ -140,6 +140,10 @@
   ./services/backup/rsnapshot.nix
   ./services/backup/tarsnap.nix
   ./services/backup/znapzend.nix
+  ./services/blockchain/bitcoin.nix
+  ./services/blockchain/dash.nix
+  ./services/blockchain/parity.nix
+  ./services/blockchain/monero.nix
   ./services/cluster/fleet.nix
   ./services/cluster/kubernetes.nix
   ./services/cluster/panamax.nix

nixos/modules/services/blockchain/bitcoin-core-generic.nix

@@ -0,0 +1,123 @@
+{ config, options, pkgs, lib
+, name
+, description
+, defaultUser
+, userDescription
+, defaultGroup
+, groupDescription
+, defaultPackage
+, daemonExec
+, cliExec
+, ... }:
+
+with lib;
+
+let
+
+  stateDir = "/var/lib/${name}";
+  pidFile = "${stateDir}/${name}.pid";
+
+  cu = pkgs.coreutils;
+
+  cfg = config.services.${name};
+  opts = options.services.${name};
+
+  configFile = optionalString (!isNull cfg.extraConfig) (" -conf=${pkgs.writeText "${name}.conf" cfg.extraConfig}");
+
+in
+
+{
+
+  options = {
+
+    services.${name} = {
+
+      enable = mkOption {
+        default = false;
+        description = "Enable ${description}";
+        type = types.bool;
+      };
+
+      package = mkOption {
+        default = defaultPackage;
+        description = "Package to use";
+        type = types.package;
+      };
+
+      user = mkOption {
+         default = defaultUser;
+         description = userDescription;
+         type = types.str;
+      };
+
+      group = mkOption {
+         default = defaultGroup;
+         description = groupDescription;
+         type = types.str;
+      };
+
+      dataDir = mkOption {
+        description = "Data directory";
+        type = types.path;
+      };
+
+      extraConfig = mkOption {
+        description = "Additional configuration";
+        type = types.nullOr types.str;
+      };
+
+    };
+
+  };
+
+  config = mkIf cfg.enable {
+
+    systemd.services.${name} = {
+
+      inherit description;
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      serviceConfig = {
+        User = cfg.user;
+        Group = cfg.group;
+        WorkingDirectory = cfg.dataDir;
+
+        Type = "forking";
+        PIDFile = pidFile;
+
+        ExecStartPre = [
+          "+${cu}/bin/mkdir -p ${stateDir}"
+          "+${cu}/bin/chown -R ${cfg.user}:${cfg.group} ${stateDir}"
+          "+${cu}/bin/chmod -R 700 ${stateDir}"
+        ];
+        ExecStart = "${cfg.package}/bin/${daemonExec} -daemon -pid=${pidFile} -datadir=${cfg.dataDir}${configFile}";
+        ExecStop = "${cfg.package}/bin/${cliExec} -rpcwait -datadir=${cfg.dataDir}${configFile} stop";
+
+        Restart = "always";
+        PrivateTmp = true;
+        TimeoutStopSec = 60;
+      };
+    };
+
+    users = {
+      extraUsers = optionalAttrs (cfg.user == opts.user.default) (singleton {
+        name = opts.user.default;
+        uid = config.ids.uids.${opts.user.default};
+        group = opts.group.default;
+        description = opts.user.description;
+        home = cfg.dataDir;
+        createHome = true;
+      });
+
+      extraGroups = optionalAttrs (cfg.group == opts.group.default) (singleton {
+        name = opts.group.default;
+        gid = config.ids.gids.${opts.group.default};
+      });
+    };
+
+    environment.systemPackages = [ cfg.package ];
+
+  };
+
+}

nixos/modules/services/blockchain/bitcoin.nix

@@ -0,0 +1,16 @@
+{ config, options, pkgs, lib, ... }:
+
+(import  ./bitcoin-core-generic.nix {
+  inherit config options pkgs lib;
+
+  name = "bitcoind";
+  description = "Bitcoin's distributed currency daemon";
+  defaultUser = "bitcoin";
+  userDescription = "Bitcoin daemon user";
+  defaultGroup = "bitcoin";
+  groupDescription = "Bitcoin daemon group";
+  defaultPackage = pkgs.altcoins.bitcoind;
+  daemonExec = "bitcoind";
+  cliExec = "bitcoin-cli";
+
+})

nixos/modules/services/blockchain/dash.nix

@@ -0,0 +1,16 @@
+{ config, options, pkgs, lib, ... }:
+
+(import  ./bitcoin-core-generic.nix {
+  inherit config options pkgs lib;
+
+  name = "dashd";
+  description = "Dash's distributed currency daemon";
+  defaultUser = "dash";
+  userDescription = "Dash daemon user";
+  defaultGroup = "dash";
+  groupDescription = "Dash daemon group";
+  defaultPackage = pkgs.altcoins.dashpay;
+  daemonExec = "dashd";
+  cliExec = "dash-cli";
+
+})