robin/wifi-prometheus-exporter
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switch to configfile instead of env

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This commit is contained in:
Robin Appelman 2024-02-29 23:39:46 +01:00
commit c4d579b033
9 changed files with 629 additions and 274 deletions
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91
module.nix
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@ -6,23 +6,67 @@
}:
with lib; let
cfg = config.services.wifi-prometheus-exporter;
format = pkgs.formats.toml {};
configFile = format.generate "wifi-prometheus-exporter-config.toml" {
ssh = {
inherit (cfg.ssh) address;
key_file = "$CREDENTIALS_DIRECTORY/ssh_key";
pubkey_file = "$CREDENTIALS_DIRECTORY/ssh_pub_key";
};
exporter = {
inherit (cfg) interfaces port;
};
mqtt = {
inherit (cfg.mqtt) hostname port username;
password_file = "$CREDENTIALS_DIRECTORY/mqtt_password";
};
};
in {
options.services.wifi-prometheus-exporter = {
enable = mkEnableOption "WiFi prometheus exporter";
sshAddress = mkOption {
type = types.str;
description = "ssh address of the wifi access point";
ssh = mkOption {
type = types.submodule {
options = {
address = mkOption {
type = types.str;
description = "ssh address of the access point";
};
keyFile = mkOption {
type = types.str;
description = "path to ssh key file";
};
pubKeyFile = mkOption {
type = types.str;
description = "path to ssh public key";
};
};
};
};
sshKeyFile = mkOption {
type = types.str;
description = "path containing the ssh private key";
};
sshPubKeyFile = mkOption {
type = types.str;
description = "path containing the ssh public key";
mqtt = mkOption {
type = types.submodule {
options = {
hostname = mkOption {
type = types.str;
description = "mqtt server hostname";
};
port = mkOption {
type = types.port;
description = "mqtt server port";
default = 1883;
};
username = mkOption {
type = types.str;
description = "mqtt username";
};
passwordFile = mkOption {
type = types.str;
description = "path containing the mqtt password";
};
};
};
};
interfaces = mkOption {
@ -36,32 +80,33 @@ in {
description = "port to listen to";
};
mqttSecretFile = mkOption {
type = types.str;
description = "path containing MQTT_HOSTNAME, MQTT_USERNAME and MQTT_PASSWORD environment variables";
};
package = mkOption {
type = types.package;
defaultText = literalExpression "pkgs.dispenser";
description = "package to use";
};
log = mkOption {
type = types.str;
description = "log level";
default = "info";
};
};
config = mkIf cfg.enable {
systemd.services."wifi-prometheus-exporter" = {
wantedBy = ["multi-user.target"];
environment = {
PORT = toString cfg.port;
ADDR = cfg.sshAddress;
KEYFILE = cfg.sshKeyFile;
PUBFILE = cfg.sshPubKeyFile;
INTERFACES = concatStringsSep " " cfg.interfaces;
RUST_LOG = cfg.log;
};
serviceConfig = {
ExecStart = "${pkgs.wifi-prometheus-exporter}/bin/wifi-prometheus-exporter";
EnvironmentFile = cfg.mqttSecretFile;
ExecStart = "${pkgs.wifi-prometheus-exporter}/bin/wifi-prometheus-exporter ${configFile}";
LoadCredential = [
"ssh_key:${cfg.ssh.keyFile}"
"ssh_pub_key:${cfg.ssh.pubKeyFile}"
"mqtt_password:${cfg.mqtt.passwordFile}"
];
Restart = "on-failure";
DynamicUser = true;
PrivateTmp = true;