{ config, lib, pkgs, ... }: with lib; let cfg = config.services.gocd-agent; in { options = { services.gocd-agent = { enable = mkEnableOption "gocd-agent"; user = mkOption { default = "gocd-agent"; type = types.str; description = '' User the Go.CD agent should execute under. ''; }; group = mkOption { default = "gocd-agent"; type = types.str; description = '' If the default user "gocd-agent" is configured then this is the primary group of that user. ''; }; extraGroups = mkOption { type = types.listOf types.str; default = [ ]; example = [ "wheel" "docker" ]; description = '' List of extra groups that the "gocd-agent" user should be a part of. ''; }; packages = mkOption { default = [ pkgs.stdenv pkgs.jre pkgs.git config.programs.ssh.package pkgs.nix ]; defaultText = "[ pkgs.stdenv pkgs.jre pkgs.git config.programs.ssh.package pkgs.nix ]"; type = types.listOf types.package; description = '' Packages to add to PATH for the Go.CD agent process. ''; }; agentConfig = mkOption { default = ""; type = types.str; example = '' agent.auto.register.resources=ant,java agent.auto.register.environments=QA,Performance agent.auto.register.hostname=Agent01 ''; description = '' Agent registration configuration. ''; }; goServer = mkOption { default = "https://127.0.0.1:8154/go"; type = types.str; description = '' URL of the GoCD Server to attach the Go.CD Agent to. ''; }; workDir = mkOption { default = "/var/lib/go-agent"; type = types.str; description = '' Specifies the working directory in which the Go.CD agent java archive resides. ''; }; initialJavaHeapSize = mkOption { default = "128m"; type = types.str; description = '' Specifies the initial java heap memory size for the Go.CD agent java process. ''; }; maxJavaHeapMemory = mkOption { default = "256m"; type = types.str; description = '' Specifies the java maximum heap memory size for the Go.CD agent java process. ''; }; startupOptions = mkOption { default = [ "-Xms${cfg.initialJavaHeapSize}" "-Xmx${cfg.maxJavaHeapMemory}" "-Djava.io.tmpdir=/tmp" "-Dcruise.console.publish.interval=10" "-Djava.security.egd=file:/dev/./urandom" ]; description = '' Specifies startup command line arguments to pass to Go.CD agent java process. ''; }; extraOptions = mkOption { default = [ ]; example = [ "-X debug" "-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5006" "-verbose:gc" "-Xloggc:go-agent-gc.log" "-XX:+PrintGCTimeStamps" "-XX:+PrintTenuringDistribution" "-XX:+PrintGCDetails" "-XX:+PrintGC" ]; description = '' Specifies additional command line arguments to pass to Go.CD agent java process. Example contains debug and gcLog arguments. ''; }; environment = mkOption { default = { }; type = with types; attrsOf str; description = '' Additional environment variables to be passed to the Go.CD agent process. As a base environment, Go.CD agent receives NIX_PATH from , NIX_REMOTE is set to "daemon". ''; }; }; }; config = mkIf cfg.enable { users.groups = optional (cfg.group == "gocd-agent") { name = "gocd-agent"; gid = config.ids.gids.gocd-agent; }; users.users = optional (cfg.user == "gocd-agent") { name = "gocd-agent"; description = "gocd-agent user"; createHome = true; home = cfg.workDir; group = cfg.group; extraGroups = cfg.extraGroups; useDefaultShell = true; uid = config.ids.uids.gocd-agent; }; systemd.services.gocd-agent = { description = "GoCD Agent"; after = [ "network.target" ]; wantedBy = [ "multi-user.target" ]; environment = let selectedSessionVars = lib.filterAttrs (n: v: builtins.elem n [ "NIX_PATH" ]) config.environment.sessionVariables; in selectedSessionVars // { NIX_REMOTE = "daemon"; AGENT_WORK_DIR = cfg.workDir; AGENT_STARTUP_ARGS = ''${concatStringsSep " " cfg.startupOptions}''; LOG_DIR = cfg.workDir; LOG_FILE = "${cfg.workDir}/go-agent-start.log"; } // cfg.environment; path = cfg.packages; script = '' MPATH="''${PATH}"; source /etc/profile export PATH="''${MPATH}:''${PATH}"; if ! test -f ~/.nixpkgs/config.nix; then mkdir -p ~/.nixpkgs/ echo "{ allowUnfree = true; }" > ~/.nixpkgs/config.nix fi mkdir -p config rm -f config/autoregister.properties ln -s "${pkgs.writeText "autoregister.properties" cfg.agentConfig}" config/autoregister.properties ${pkgs.git}/bin/git config --global --add http.sslCAinfo /etc/ssl/certs/ca-certificates.crt ${pkgs.jre}/bin/java ${concatStringsSep " " cfg.startupOptions} \ ${concatStringsSep " " cfg.extraOptions} \ -jar ${pkgs.gocd-agent}/go-agent/agent-bootstrapper.jar \ -serverUrl ${cfg.goServer} ''; serviceConfig = { User = cfg.user; WorkingDirectory = cfg.workDir; RestartSec = 30; Restart = "on-failure"; }; }; }; }