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Merge pull request #14145 from MostAwesomeDude/tahoe
services: Add Tahoe-LAFS service.
This commit is contained in:
Arseniy Seroka
commit
882d0b35b8
2 changed files with 287 additions and 0 deletions
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@ -283,6 +283,7 @@
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./services/network-filesystems/openafs-client/default.nix
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./services/network-filesystems/rsyncd.nix
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./services/network-filesystems/samba.nix
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./services/network-filesystems/tahoe.nix
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./services/network-filesystems/diod.nix
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./services/network-filesystems/u9fs.nix
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./services/network-filesystems/yandex-disk.nix
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286
nixos/modules/services/network-filesystems/tahoe.nix
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286
nixos/modules/services/network-filesystems/tahoe.nix
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@ -0,0 +1,286 @@
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{ 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 = types.loaOf types.optionSet;
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description = ''
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The Tahoe introducers.
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'';
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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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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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nodes = mkOption {
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default = {};
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type = types.loaOf types.optionSet;
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description = ''
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The Tahoe nodes.
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'';
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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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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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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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};
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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 = ${toString settings.tub.port}
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'';
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});
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# Actually require Tahoe, so that we will have it installed.
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systemPackages = flip mapAttrsToList cfg.introducers (node: settings:
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settings.package
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);
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};
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# Open up the firewall.
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# networking.firewall.allowedTCPPorts = flip mapAttrsToList cfg.introducers
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# (node: settings: settings.tub.port);
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systemd.services = flip mapAttrs' cfg.introducers (node: settings:
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let
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pidfile = "/run/tahoe.introducer-${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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};
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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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# 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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script = ''
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tahoe start ${nodedir} -n -l- --pidfile=${pidfile}
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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 = ${toString settings.tub.port}
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# This is a Twisted endpoint. Twisted Web doesn't work on
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# non-TCP. ~ C.
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web.port = tcp:${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 = ${if settings.helper.enable then "true" else "false"}
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'';
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});
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# Actually require Tahoe, so that we will have it installed.
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systemPackages = flip mapAttrsToList cfg.nodes (node: settings:
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settings.package
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);
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};
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# Open up the firewall.
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# networking.firewall.allowedTCPPorts = flip mapAttrsToList cfg.nodes
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# (node: settings: settings.tub.port);
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systemd.services = flip mapAttrs' cfg.nodes (node: settings:
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let
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pidfile = "/run/tahoe.${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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};
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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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# 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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script = ''
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tahoe start ${nodedir} -n -l- --pidfile=${pidfile}
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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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