forked from mirrors/nixpkgs
8a424e3fbd
Since only a single command is necessary to start Tahoe it is sufficient to use ExecStart and thereby skip starting up Bash (and leaving it running).
366 lines
14 KiB
Nix
366 lines
14 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.tahoe;
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in
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{
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options.services.tahoe = {
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introducers = mkOption {
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default = {};
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type = with types; loaOf (submodule {
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options = {
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nickname = mkOption {
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type = types.str;
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description = ''
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The nickname of this Tahoe introducer.
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'';
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};
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tub.port = mkOption {
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default = 3458;
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type = types.int;
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description = ''
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The port on which the introducer will listen.
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'';
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};
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tub.location = mkOption {
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default = null;
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type = types.nullOr types.str;
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description = ''
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The external location that the introducer should listen on.
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If specified, the port should be included.
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'';
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};
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package = mkOption {
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default = pkgs.tahoelafs;
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defaultText = "pkgs.tahoelafs";
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type = types.package;
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example = literalExample "pkgs.tahoelafs";
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description = ''
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The package to use for the Tahoe LAFS daemon.
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'';
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};
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};
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});
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description = ''
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The Tahoe introducers.
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'';
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};
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nodes = mkOption {
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default = {};
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type = with types; loaOf (submodule {
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options = {
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nickname = mkOption {
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type = types.str;
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description = ''
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The nickname of this Tahoe node.
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'';
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};
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tub.port = mkOption {
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default = 3457;
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type = types.int;
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description = ''
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The port on which the tub will listen.
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This is the correct setting to tweak if you want Tahoe's storage
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system to listen on a different port.
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'';
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};
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tub.location = mkOption {
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default = null;
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type = types.nullOr types.str;
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description = ''
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The external location that the node should listen on.
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This is the setting to tweak if there are multiple interfaces
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and you want to alter which interface Tahoe is advertising.
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If specified, the port should be included.
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'';
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};
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web.port = mkOption {
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default = 3456;
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type = types.int;
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description = ''
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The port on which the Web server will listen.
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This is the correct setting to tweak if you want Tahoe's WUI to
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listen on a different port.
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'';
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};
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client.introducer = mkOption {
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default = null;
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type = types.nullOr types.str;
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description = ''
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The furl for a Tahoe introducer node.
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Like all furls, keep this safe and don't share it.
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'';
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};
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client.helper = mkOption {
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default = null;
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type = types.nullOr types.str;
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description = ''
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The furl for a Tahoe helper node.
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Like all furls, keep this safe and don't share it.
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'';
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};
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client.shares.needed = mkOption {
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default = 3;
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type = types.int;
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description = ''
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The number of shares required to reconstitute a file.
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'';
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};
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client.shares.happy = mkOption {
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default = 7;
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type = types.int;
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description = ''
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The number of distinct storage nodes required to store
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a file.
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'';
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};
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client.shares.total = mkOption {
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default = 10;
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type = types.int;
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description = ''
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The number of shares required to store a file.
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'';
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};
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storage.enable = mkEnableOption "storage service";
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storage.reservedSpace = mkOption {
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default = "1G";
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type = types.str;
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description = ''
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The amount of filesystem space to not use for storage.
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'';
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};
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helper.enable = mkEnableOption "helper service";
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sftpd.enable = mkEnableOption "SFTP service";
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sftpd.port = mkOption {
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default = null;
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type = types.nullOr types.int;
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description = ''
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The port on which the SFTP server will listen.
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This is the correct setting to tweak if you want Tahoe's SFTP
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daemon to listen on a different port.
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'';
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};
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sftpd.hostPublicKeyFile = mkOption {
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default = null;
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type = types.nullOr types.path;
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description = ''
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Path to the SSH host public key.
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'';
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};
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sftpd.hostPrivateKeyFile = mkOption {
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default = null;
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type = types.nullOr types.path;
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description = ''
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Path to the SSH host private key.
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'';
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};
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sftpd.accounts.file = mkOption {
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default = null;
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type = types.nullOr types.path;
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description = ''
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Path to the accounts file.
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'';
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};
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sftpd.accounts.url = mkOption {
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default = null;
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type = types.nullOr types.str;
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description = ''
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URL of the accounts server.
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'';
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};
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package = mkOption {
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default = pkgs.tahoelafs;
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defaultText = "pkgs.tahoelafs";
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type = types.package;
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example = literalExample "pkgs.tahoelafs";
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description = ''
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The package to use for the Tahoe LAFS daemon.
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'';
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};
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};
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});
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description = ''
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The Tahoe nodes.
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'';
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};
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};
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config = mkMerge [
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(mkIf (cfg.introducers != {}) {
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environment = {
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etc = flip mapAttrs' cfg.introducers (node: settings:
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nameValuePair "tahoe-lafs/introducer-${node}.cfg" {
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mode = "0444";
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text = ''
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# This configuration is generated by Nix. Edit at your own
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# peril; here be dragons.
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[node]
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nickname = ${settings.nickname}
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tub.port = ${toString settings.tub.port}
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${optionalString (settings.tub.location != null)
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"tub.location = ${settings.tub.location}"}
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'';
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});
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# Actually require Tahoe, so that we will have it installed.
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systemPackages = flip mapAttrsToList cfg.introducers (node: settings:
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settings.package
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);
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};
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# Open up the firewall.
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# networking.firewall.allowedTCPPorts = flip mapAttrsToList cfg.introducers
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# (node: settings: settings.tub.port);
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systemd.services = flip mapAttrs' cfg.introducers (node: settings:
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let
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pidfile = "/run/tahoe.introducer-${node}.pid";
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# This is a directory, but it has no trailing slash. Tahoe commands
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# get antsy when there's a trailing slash.
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nodedir = "/var/db/tahoe-lafs/introducer-${node}";
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in nameValuePair "tahoe.introducer-${node}" {
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description = "Tahoe LAFS node ${node}";
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wantedBy = [ "multi-user.target" ];
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path = [ settings.package ];
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restartTriggers = [
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config.environment.etc."tahoe-lafs/introducer-${node}.cfg".source ];
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serviceConfig = {
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Type = "simple";
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PIDFile = pidfile;
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# Believe it or not, Tahoe is very brittle about the order of
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# arguments to $(tahoe start). The node directory must come first,
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# and arguments which alter Twisted's behavior come afterwards.
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ExecStart = ''
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${settings.package}/bin/tahoe start ${nodedir} -n -l- --pidfile=${pidfile}
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'';
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};
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preStart = ''
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if [ \! -d ${nodedir} ]; then
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mkdir -p /var/db/tahoe-lafs
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tahoe create-introducer ${nodedir}
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fi
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# Tahoe has created a predefined tahoe.cfg which we must now
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# scribble over.
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# XXX I thought that a symlink would work here, but it doesn't, so
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# we must do this on every prestart. Fixes welcome.
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# rm ${nodedir}/tahoe.cfg
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# ln -s /etc/tahoe-lafs/introducer-${node}.cfg ${nodedir}/tahoe.cfg
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cp /etc/tahoe-lafs/introducer-${node}.cfg ${nodedir}/tahoe.cfg
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'';
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});
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users.extraUsers = flip mapAttrs' cfg.introducers (node: _:
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nameValuePair "tahoe.introducer-${node}" {
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description = "Tahoe node user for introducer ${node}";
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isSystemUser = true;
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});
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})
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(mkIf (cfg.nodes != {}) {
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environment = {
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etc = flip mapAttrs' cfg.nodes (node: settings:
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nameValuePair "tahoe-lafs/${node}.cfg" {
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mode = "0444";
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text = ''
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# This configuration is generated by Nix. Edit at your own
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# peril; here be dragons.
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[node]
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nickname = ${settings.nickname}
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tub.port = ${toString settings.tub.port}
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${optionalString (settings.tub.location != null)
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"tub.location = ${settings.tub.location}"}
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# This is a Twisted endpoint. Twisted Web doesn't work on
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# non-TCP. ~ C.
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web.port = tcp:${toString settings.web.port}
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[client]
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${optionalString (settings.client.introducer != null)
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"introducer.furl = ${settings.client.introducer}"}
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${optionalString (settings.client.helper != null)
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"helper.furl = ${settings.client.helper}"}
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shares.needed = ${toString settings.client.shares.needed}
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shares.happy = ${toString settings.client.shares.happy}
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shares.total = ${toString settings.client.shares.total}
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[storage]
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enabled = ${if settings.storage.enable then "true" else "false"}
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reserved_space = ${settings.storage.reservedSpace}
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[helper]
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enabled = ${if settings.helper.enable then "true" else "false"}
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[sftpd]
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enabled = ${if settings.sftpd.enable then "true" else "false"}
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${optionalString (settings.sftpd.port != null)
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"port = ${toString settings.sftpd.port}"}
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${optionalString (settings.sftpd.hostPublicKeyFile != null)
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"host_pubkey_file = ${settings.sftpd.hostPublicKeyFile}"}
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${optionalString (settings.sftpd.hostPrivateKeyFile != null)
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"host_privkey_file = ${settings.sftpd.hostPrivateKeyFile}"}
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${optionalString (settings.sftpd.accounts.file != null)
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"accounts.file = ${settings.sftpd.accounts.file}"}
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${optionalString (settings.sftpd.accounts.url != null)
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"accounts.url = ${settings.sftpd.accounts.url}"}
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'';
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});
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# Actually require Tahoe, so that we will have it installed.
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systemPackages = flip mapAttrsToList cfg.nodes (node: settings:
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settings.package
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);
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};
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# Open up the firewall.
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# networking.firewall.allowedTCPPorts = flip mapAttrsToList cfg.nodes
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# (node: settings: settings.tub.port);
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systemd.services = flip mapAttrs' cfg.nodes (node: settings:
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let
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pidfile = "/run/tahoe.${node}.pid";
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# This is a directory, but it has no trailing slash. Tahoe commands
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# get antsy when there's a trailing slash.
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nodedir = "/var/db/tahoe-lafs/${node}";
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in nameValuePair "tahoe.${node}" {
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description = "Tahoe LAFS node ${node}";
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wantedBy = [ "multi-user.target" ];
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path = [ settings.package ];
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restartTriggers = [
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config.environment.etc."tahoe-lafs/${node}.cfg".source ];
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serviceConfig = {
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Type = "simple";
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PIDFile = pidfile;
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# Believe it or not, Tahoe is very brittle about the order of
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# arguments to $(tahoe start). The node directory must come first,
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# and arguments which alter Twisted's behavior come afterwards.
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ExecStart = ''
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${settings.package}/bin/tahoe start ${nodedir} -n -l- --pidfile=${pidfile}
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'';
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};
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preStart = ''
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if [ \! -d ${nodedir} ]; then
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mkdir -p /var/db/tahoe-lafs
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tahoe create-node ${nodedir}
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fi
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# Tahoe has created a predefined tahoe.cfg which we must now
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# scribble over.
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# XXX I thought that a symlink would work here, but it doesn't, so
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# we must do this on every prestart. Fixes welcome.
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# rm ${nodedir}/tahoe.cfg
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# ln -s /etc/tahoe-lafs/${node}.cfg ${nodedir}/tahoe.cfg
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cp /etc/tahoe-lafs/${node}.cfg ${nodedir}/tahoe.cfg
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'';
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});
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users.extraUsers = flip mapAttrs' cfg.nodes (node: _:
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nameValuePair "tahoe.${node}" {
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description = "Tahoe node user for node ${node}";
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isSystemUser = true;
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});
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})
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];
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}
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