nix-bitcoin/modules/lightning-charge.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.lightning-charge;
inherit (config) nix-bitcoin-services;
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user = config.users.users.lightning-charge.name;
group = config.users.users.lightning-charge.group;
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in {
options.services.lightning-charge = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
If enabled, the lightning-charge service will be installed.
'';
};
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dataDir = mkOption {
type = types.path;
default = "/var/lib/lightning-charge";
description = "The data directory for lightning-charge.";
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};
};
config = mkIf cfg.enable {
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assertions = [
{ assertion = config.services.clightning.enable;
message = "lightning-charge requires clightning.";
}
];
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users.users.lightning-charge = {
description = "lightning-charge User";
group = "lightning-charge";
extraGroups = [ "clightning" ];
};
users.groups.lightning-charge = {};
systemd.tmpfiles.rules = [
"d '${cfg.dataDir}' 0700 ${user} ${group} - -"
];
environment.systemPackages = [ pkgs.nix-bitcoin.lightning-charge ];
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systemd.services.lightning-charge = {
description = "Run lightning-charge";
wantedBy = [ "multi-user.target" ];
requires = [ "clightning.service" ];
after = [ "clightning.service" ];
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preStart = ''
# Move existing lightning-charge.db
# TODO: Remove eventually
if [[ -e ${config.services.clightning.dataDir}/lightning-charge.db ]]; then
mv ${config.services.clightning.dataDir}/lightning-charge.db ${cfg.dataDir}/lightning-charge.db
chown ${user}: ${cfg.dataDir}/lightning-charge.db
chmod 600 ${cfg.dataDir}/lightning-charge.db
fi
'';
serviceConfig = nix-bitcoin-services.defaultHardening // {
# Needed to access clightning.dataDir in preStart
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PermissionsStartOnly = "true";
EnvironmentFile = "${config.nix-bitcoin.secretsDir}/lightning-charge-env";
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ExecStart = "${pkgs.nix-bitcoin.lightning-charge}/bin/charged -l ${config.services.clightning.dataDir}/bitcoin -d ${cfg.dataDir}/lightning-charge.db";
User = user;
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Restart = "on-failure";
RestartSec = "10s";
ReadWritePaths = "${cfg.dataDir}";
} // nix-bitcoin-services.nodejs
// nix-bitcoin-services.allowTor;
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};
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nix-bitcoin.secrets.lightning-charge-env.user = user;
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};
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}