79 lines
1.8 KiB
Nix
79 lines
1.8 KiB
Nix
{ config, pkgs, ... }:
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with pkgs;
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with pkgs.lib;
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let
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cfg = config.services.riemann-dash;
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conf = writeText "config.rb" ''
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riemann_base = "${cfg.dataDir}"
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config.store[:ws_config] = "#{riemann_base}/config/config.json"
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${cfg.config}
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'';
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launcher = writeScriptBin "riemann-dash" ''
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#!/bin/sh
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exec ${rubyLibs.riemann_dash}/bin/riemann-dash ${conf}
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'';
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in {
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options = {
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services.riemann-dash = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Enable the riemann-dash dashboard daemon.
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'';
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};
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config = mkOption {
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type = types.lines;
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description = ''
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Contents added to the end of the riemann-dash configuration file.
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'';
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};
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dataDir = mkOption {
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type = types.str;
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default = "/var/riemann-dash";
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description = ''
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Location of the riemann-base dir. The dashboard configuration file is
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is stored to this directory. The directory is created automatically on
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service start, and owner is set to the riemanndash user.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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users.extraGroups.riemanndash.gid = config.ids.gids.riemanndash;
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users.extraUsers.riemanndash = {
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description = "riemann-dash daemon user";
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uid = config.ids.uids.riemanndash;
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group = "riemanndash";
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};
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systemd.services.riemann-dash = {
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wantedBy = [ "multi-user.target" ];
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wants = [ "riemann.service" ];
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after = [ "riemann.service" ];
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preStart = ''
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mkdir -p ${cfg.dataDir}/config
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chown -R riemanndash:riemanndash ${cfg.dataDir}
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'';
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serviceConfig = {
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User = "riemanndash";
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ExecStart = "${launcher}/bin/riemann-dash";
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PermissionsStartOnly = true;
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};
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};
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};
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}
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