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