92 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			92 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, pkgs, lib, ... }:
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with pkgs;
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with lib;
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let
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  cfg = config.services.riemann;
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  classpath = concatStringsSep ":" (
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    cfg.extraClasspathEntries ++ [ "${riemann}/share/java/riemann.jar" ]
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  );
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  riemannConfig = concatStringsSep "\n" (
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    [cfg.config] ++ (map (f: ''(load-file "${f}")'') cfg.configFiles)
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  );
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  launcher = writeScriptBin "riemann" ''
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    #!/bin/sh
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    exec ${jdk}/bin/java ${concatStringsSep "\n" cfg.extraJavaOpts} \
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      -cp ${classpath} \
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      riemann.bin ${writeText "riemann-config.clj" riemannConfig}
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  '';
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in {
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  options = {
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    services.riemann = {
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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 network monitoring 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 of the Riemann configuration file.
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        '';
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      };
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      configFiles = mkOption {
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        type = with types; listOf path;
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        default = [];
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        description = ''
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          Extra files containing Riemann configuration. These files will be
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          loaded at runtime by Riemann (with Clojure's
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          <literal>load-file</literal> function) at the end of the
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          configuration.
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        '';
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      };
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      extraClasspathEntries = mkOption {
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        type = with types; listOf str;
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        default = [];
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        description = ''
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          Extra entries added to the Java classpath when running Riemann.
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        '';
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      };
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      extraJavaOpts = mkOption {
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        type = with types; listOf str;
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        default = [];
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        description = ''
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          Extra Java options used when launching Riemann.
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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.riemann.gid = config.ids.gids.riemann;
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    users.extraUsers.riemann = {
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      description = "riemann daemon user";
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      uid = config.ids.uids.riemann;
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      group = "riemann";
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    };
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    systemd.services.riemann = {
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      wantedBy = [ "multi-user.target" ];
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      path = [ inetutils ];
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      serviceConfig = {
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        User = "riemann";
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        ExecStart = "${launcher}/bin/riemann";
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      };
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    };
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  };
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}
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