67 lines
1.6 KiB
Nix
67 lines
1.6 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.on-failure;
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api = {
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enable = mkEnableOption "krebs.on-failure" // {
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default = cfg.plans != { };
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};
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url = mkOption {
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type = types.str;
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description = "url on where to send the message to";
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};
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plans = mkOption {
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default = { };
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type = with types;
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attrsOf (submodule ({ config, ... }: {
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options = {
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enable = mkEnableOption "on-failure.${config.name}" // {
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default = true;
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};
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name = mkOption {
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type = types.str;
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default = config._module.args.name;
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description = "Name of the to-be-monitored service.";
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};
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};
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}));
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};
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};
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enabled-plans = filter (getAttr "enable") (attrValues cfg.plans);
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to-services = plan: {
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"${plan.name}".unitConfig.OnFailure = "on-failure.${plan.name}.service";
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"on-failure.${plan.name}".serviceConfig = rec {
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ExecStart = mattermostStart plan;
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SyslogIdentifier = ExecStart.name;
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Type = "oneshot";
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};
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};
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# todo this output must be better
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mattermostStart = plan:
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pkgs.writers.writeDash "on-failure.${plan.name}" ''
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${pkgs.curl}/bin/curl \
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--include \
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--request POST \
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--data-urlencode \
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'payload={"text": "<!channel> :fire: Service Failed ${plan.name} on ${config.networking.hostName}"}' \
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${cfg.url}
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'';
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in
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{
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options.on-failure = api;
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config = lib.mkIf cfg.enable {
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systemd.services = foldl (a: b: a // b) { } (map to-services enabled-plans);
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};
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}
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