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121 lines
3 KiB
Nix
121 lines
3 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.statsd;
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configFile = pkgs.writeText "statsd.conf" ''
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{
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address: "${cfg.host}",
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port: "${toString cfg.port}",
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mgmt_address: "${cfg.mgmt_address}",
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mgmt_port: "${toString cfg.mgmt_port}",
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backends: [${concatMapStringsSep "," (el: if (nixType el) == "string" then ''"./backends/${el}"'' else ''"${head el.names}"'') cfg.backends}],
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${optionalString (cfg.graphiteHost!=null) ''graphiteHost: "${cfg.graphiteHost}",''}
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${optionalString (cfg.graphitePort!=null) ''graphitePort: "${toString cfg.graphitePort}",''}
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console: {
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prettyprint: false
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},
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log: {
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backend: "syslog"
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},
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automaticConfigReload: false${optionalString (cfg.extraConfig != null) ","}
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${cfg.extraConfig}
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}
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'';
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in
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{
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###### interface
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options.services.statsd = {
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enable = mkOption {
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description = "Whether to enable statsd stats aggregation service";
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default = false;
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type = types.bool;
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};
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host = mkOption {
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description = "Address that statsd listens on over UDP";
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default = "127.0.0.1";
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type = types.str;
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};
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port = mkOption {
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description = "Port that stats listens for messages on over UDP";
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default = 8125;
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type = types.int;
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};
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mgmt_address = mkOption {
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description = "Address to run management TCP interface on";
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default = "127.0.0.1";
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type = types.str;
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};
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mgmt_port = mkOption {
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description = "Port to run the management TCP interface on";
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default = 8126;
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type = types.int;
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};
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backends = mkOption {
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description = "List of backends statsd will use for data persistence";
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default = ["graphite"];
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example = ["graphite" pkgs.nodePackages."statsd-influxdb-backend"];
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type = types.listOf (types.either types.str types.package);
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};
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graphiteHost = mkOption {
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description = "Hostname or IP of Graphite server";
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default = null;
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type = types.nullOr types.str;
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};
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graphitePort = mkOption {
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description = "Port of Graphite server (i.e. carbon-cache).";
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default = null;
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type = types.nullOr types.int;
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};
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extraConfig = mkOption {
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description = "Extra configuration options for statsd";
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default = "";
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type = types.nullOr types.str;
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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users.extraUsers = singleton {
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name = "statsd";
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uid = config.ids.uids.statsd;
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description = "Statsd daemon user";
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};
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systemd.services.statsd = {
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description = "Statsd Server";
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wantedBy = [ "multi-user.target" ];
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environment = {
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NODE_PATH=concatMapStringsSep ":" (el: "${el}/lib/node_modules") (filter (el: (nixType el) != "string") cfg.backends);
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};
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serviceConfig = {
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ExecStart = "${pkgs.nodePackages.statsd}/bin/statsd ${configFile}";
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User = "statsd";
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};
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};
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environment.systemPackages = [pkgs.nodePackages.statsd];
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};
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}
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