105 lines
2.9 KiB
Nix
105 lines
2.9 KiB
Nix
{ config, lib, pkgs, options, ... }:
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let
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cfg = config.services.prometheus.exporters.rspamd;
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inherit (lib)
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mkOption
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types
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replaceStrings
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mkRemovedOptionModule
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recursiveUpdate
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concatStringsSep
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literalExpression
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;
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mkFile = conf:
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pkgs.writeText "rspamd-exporter-config.yml" (builtins.toJSON conf);
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generateConfig = extraLabels: {
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modules.default.metrics = (map (path: {
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name = "rspamd_${replaceStrings [ "[" "." " " "]" "\\" "'" ] [ "_" "_" "_" "" "" "" ] path}";
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path = "{ .${path} }";
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labels = extraLabels;
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}) [
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"actions['add\\ header']"
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"actions['no\\ action']"
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"actions['rewrite\\ subject']"
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"actions['soft\\ reject']"
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"actions.greylist"
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"actions.reject"
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"bytes_allocated"
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"chunks_allocated"
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"chunks_freed"
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"chunks_oversized"
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"connections"
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"control_connections"
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"ham_count"
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"learned"
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"pools_allocated"
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"pools_freed"
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"read_only"
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"scanned"
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"shared_chunks_allocated"
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"spam_count"
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"total_learns"
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]) ++ [{
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name = "rspamd_statfiles";
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type = "object";
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path = "{.statfiles[*]}";
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labels = recursiveUpdate {
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symbol = "{.symbol}";
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type = "{.type}";
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} extraLabels;
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values = {
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revision = "{.revision}";
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size = "{.size}";
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total = "{.total}";
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used = "{.used}";
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languages = "{.languages}";
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users = "{.users}";
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};
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}];
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};
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in
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{
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port = 7980;
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extraOpts = {
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extraLabels = mkOption {
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type = types.attrsOf types.str;
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default = {
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host = config.networking.hostName;
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};
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defaultText = literalExpression "{ host = config.networking.hostName; }";
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example = literalExpression ''
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{
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host = config.networking.hostName;
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custom_label = "some_value";
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}
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'';
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description = "Set of labels added to each metric.";
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};
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};
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serviceOpts.serviceConfig.ExecStart = ''
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${pkgs.prometheus-json-exporter}/bin/json_exporter \
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--config.file ${mkFile (generateConfig cfg.extraLabels)} \
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--web.listen-address "${cfg.listenAddress}:${toString cfg.port}" \
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${concatStringsSep " \\\n " cfg.extraFlags}
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'';
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imports = [
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(mkRemovedOptionModule [ "url" ] ''
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This option was removed. The URL of the rspamd metrics endpoint
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must now be provided to the exporter by prometheus via the url
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parameter `target'.
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In prometheus a scrape URL would look like this:
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http://some.rspamd-exporter.host:7980/probe?target=http://some.rspamd.host:11334/stat
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For more information, take a look at the official documentation
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(https://github.com/prometheus-community/json_exporter) of the json_exporter.
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'')
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({ options.warnings = options.warnings; options.assertions = options.assertions; })
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];
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}
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