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{ config, lib, options, pkgs, ... }:
with lib;
let
cfg = config.services.gocd-agent;
opt = options.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 = literalExpression "[ 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 {
type = types.listOf types.str;
default = [
"-Xms${cfg.initialJavaHeapSize}"
"-Xmx${cfg.maxJavaHeapMemory}"
"-Djava.io.tmpdir=/tmp"
"-Dcruise.console.publish.interval=10"
"-Djava.security.egd=file:/dev/./urandom"
];
defaultText = literalExpression ''
[
"-Xms''${config.${opt.initialJavaHeapSize}}"
"-Xmx''${config.${opt.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 = [ ];
type = types.listOf types.str;
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
<option>environment.sessionVariables</option>, NIX_REMOTE is set to
"daemon".
'';
};
};
};
config = mkIf cfg.enable {
users.groups = optionalAttrs (cfg.group == "gocd-agent") {
gocd-agent.gid = config.ids.gids.gocd-agent;
};
users.users = optionalAttrs (cfg.user == "gocd-agent") {
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";
};
};
};
}
|