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{pkgs, config, lib, ...}:
with lib;
let
cfg = config.services.hologram-agent;
cfgFile = pkgs.writeText "hologram-agent.json" (builtins.toJSON {
host = cfg.dialAddress;
});
in {
options = {
services.hologram-agent = {
enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable the Hologram agent for AWS instance credentials";
};
dialAddress = mkOption {
type = types.str;
default = "localhost:3100";
description = "Hologram server and port.";
};
httpPort = mkOption {
type = types.str;
default = "80";
description = "Port for metadata service to listen on.";
};
};
};
config = mkIf cfg.enable {
boot.kernelModules = [ "dummy" ];
networking.interfaces.dummy0.ipv4.addresses = [
{ address = "169.254.169.254"; prefixLength = 32; }
];
systemd.services.hologram-agent = {
description = "Provide EC2 instance credentials to machines outside of EC2";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
requires = [ "network-link-dummy0.service" "network-addresses-dummy0.service" ];
preStart = ''
/run/current-system/sw/bin/rm -fv /run/hologram.sock
'';
serviceConfig = {
ExecStart = "${pkgs.hologram}/bin/hologram-agent -debug -conf ${cfgFile} -port ${cfg.httpPort}";
};
};
};
meta.maintainers = with lib.maintainers; [ ];
}
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