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{ config, lib, pkgs, options, ... }:
with lib;
let
cfg = config.services.prometheus.exporters.flow;
in {
port = 9590;
extraOpts = {
brokers = mkOption {
type = types.listOf types.str;
example = literalExpression ''[ "kafka.example.org:19092" ]'';
description = "List of Kafka brokers to connect to.";
};
asn = mkOption {
type = types.ints.positive;
example = 65542;
description = "The ASN being monitored.";
};
partitions = mkOption {
type = types.listOf types.int;
default = [];
description = ''
The number of the partitions to consume, none means all.
'';
};
topic = mkOption {
type = types.str;
example = "pmacct.acct";
description = "The Kafka topic to consume from.";
};
};
serviceOpts = {
serviceConfig = {
DynamicUser = true;
ExecStart = ''
${pkgs.prometheus-flow-exporter}/bin/flow-exporter \
-asn ${toString cfg.asn} \
-topic ${cfg.topic} \
-brokers ${concatStringsSep "," cfg.brokers} \
${optionalString (cfg.partitions != []) "-partitions ${concatStringsSep "," cfg.partitions}"} \
-addr ${cfg.listenAddress}:${toString cfg.port} ${concatStringsSep " " cfg.extraFlags}
'';
};
};
}
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