61 lines
1.5 KiB
Nix
61 lines
1.5 KiB
Nix
# NixOS module for configuring the simple SMTP relay.
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{ depot, pkgs, config, lib, ... }:
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let
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inherit (builtins) attrValues mapAttrs;
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inherit (lib)
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concatStringsSep
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mkEnableOption
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mkIf
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mkOption
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types
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;
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cfg = config.services.depot.smtprelay;
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description = "Simple SMTP relay";
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# Configuration values that are always overridden.
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#
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# - logging is pinned to stdout for journald compatibility
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# - secret config is loaded through systemd's credential loading facility
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overrideArgs = {
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logfile = "";
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config = "$CREDENTIALS_DIRECTORY/secrets";
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};
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# Creates the command line argument string for the service.
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prepareArgs = args:
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concatStringsSep " "
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(attrValues (mapAttrs (key: value: "-${key} \"${toString value}\"")
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(args // overrideArgs)));
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in
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{
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options.services.depot.smtprelay = {
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enable = mkEnableOption description;
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args = mkOption {
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type = types.attrsOf types.str;
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description = "Key value pairs for command line arguments";
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};
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secretsFile = mkOption {
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type = types.str;
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default = "/run/agenix/smtprelay";
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};
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};
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config = mkIf cfg.enable {
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systemd.services.smtprelay = {
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inherit description;
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script = "${depot.third_party.smtprelay}/bin/smtprelay ${prepareArgs cfg.args}";
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Restart = "always";
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StateDirectory = "smtprelay";
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DynamicUser = true;
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LoadCredential = "secrets:${cfg.secretsFile}";
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};
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};
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};
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}
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