301 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			301 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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# TODO: support non-postgresql
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with lib;
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let
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  cfg = config.services.gitlab;
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  ruby = pkgs.gitlab.ruby;
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  bundler = pkgs.bundler;
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  gemHome = "${pkgs.gitlab.env}/${ruby.gemPath}";
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  databaseYml = ''
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    production:
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      adapter: postgresql
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      database: ${cfg.databaseName}
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      host: ${cfg.databaseHost}
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      password: ${cfg.databasePassword}
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      username: ${cfg.databaseUsername}
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      encoding: utf8
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  '';
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  gitlabShellYml = ''
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    user: gitlab
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    gitlab_url: "http://${cfg.host}:${toString cfg.port}/"
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    http_settings:
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      self_signed_cert: false
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    repos_path: "${cfg.stateDir}/repositories"
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    log_file: "${cfg.stateDir}/log/gitlab-shell.log"
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    redis:
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      bin: ${pkgs.redis}/bin/redis-cli
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      host: 127.0.0.1
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      port: 6379
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      database: 0
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      namespace: resque:gitlab
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  '';
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  unicornConfig = builtins.readFile ./defaultUnicornConfig.rb;
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  gitlab-runner = pkgs.stdenv.mkDerivation rec {
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    name = "gitlab-runner";
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    buildInputs = [ pkgs.gitlab pkgs.bundler pkgs.makeWrapper ];
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    phases = "installPhase fixupPhase";
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    buildPhase = "";
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    installPhase = ''
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      mkdir -p $out/bin
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      makeWrapper ${bundler}/bin/bundle $out/bin/gitlab-runner\
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          --set RAKEOPT '"-f ${pkgs.gitlab}/share/gitlab/Rakefile"'\
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          --set GEM_HOME '${gemHome}'\
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          --set UNICORN_PATH "${cfg.stateDir}/"\
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          --set GITLAB_PATH "${pkgs.gitlab}/share/gitlab/"\
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          --set GITLAB_APPLICATION_LOG_PATH "${cfg.stateDir}/log/application.log"\
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          --set GITLAB_SATELLITES_PATH "${cfg.stateDir}/satellites"\
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          --set GITLAB_SHELL_PATH "${pkgs.gitlab-shell}"\
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          --set GITLAB_REPOSITORIES_PATH "${cfg.stateDir}/repositories"\
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          --set GITLAB_SHELL_HOOKS_PATH "${cfg.stateDir}/shell/hooks"\
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          --set BUNDLE_GEMFILE "${pkgs.gitlab}/share/gitlab/Gemfile"\
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          --set GITLAB_EMAIL_FROM "${cfg.emailFrom}"\
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          --set GITLAB_SHELL_CONFIG_PATH "${cfg.stateDir}/shell/config.yml"\
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          --set GITLAB_SHELL_SECRET_PATH "${cfg.stateDir}/config/gitlab_shell_secret"\
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          --set GITLAB_HOST "${cfg.host}"\
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          --set GITLAB_PORT "${toString cfg.port}"\
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          --set GITLAB_BACKUP_PATH "${cfg.backupPath}"\
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          --set RAILS_ENV "production"
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    '';
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  };
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in {
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  options = {
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    services.gitlab = {
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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 gitlab service.
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        '';
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      };
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      satelliteDir = mkOption {
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        type = types.str;
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        default = "/var/gitlab/git-satellites";
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        description = "Gitlab directory to store checked out git trees requires for operation.";
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      };
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      stateDir = mkOption {
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        type = types.str;
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        default = "/var/gitlab/state";
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        description = "Gitlab state directory, logs are stored here.";
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      };
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      backupPath = mkOption {
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        type = types.str;
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        default = cfg.stateDir + "/backup";
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        description = "Gitlab path for backups.";
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      };
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      databaseHost = mkOption {
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        type = types.str;
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        default = "127.0.0.1";
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        description = "Gitlab database hostname.";
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      };
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      databasePassword = mkOption {
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        type = types.str;
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        default = "";
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        description = "Gitlab database user password.";
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      };
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      databaseName = mkOption {
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        type = types.str;
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        default = "gitlab";
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        description = "Gitlab database name.";
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      };
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      databaseUsername = mkOption {
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        type = types.str;
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        default = "gitlab";
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        description = "Gitlab database user.";
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      };
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      emailFrom = mkOption {
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        type = types.str;
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        default = "example@example.org";
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        description = "The source address for emails sent by gitlab.";
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      };
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      host = mkOption {
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        type = types.str;
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        default = config.networking.hostName;
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        description = "Gitlab host name. Used e.g. for copy-paste URLs.";
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      };
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      port = mkOption {
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        type = types.int;
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        default = 8080;
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        description = "Gitlab server listening port.";
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      };
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    };
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  };
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  config = mkIf cfg.enable {
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    environment.systemPackages = [ gitlab-runner pkgs.gitlab-shell ];
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    assertions = [
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      { assertion = cfg.databasePassword != "";
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        message = "databasePassword must be set";
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      }
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    ];
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    # Redis is required for the sidekiq queue runner.
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    services.redis.enable = mkDefault true;
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    # We use postgres as the main data store.
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    services.postgresql.enable = mkDefault true;
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    services.postgresql.package = mkDefault pkgs.postgresql;
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    # Use postfix to send out mails.
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    services.postfix.enable = mkDefault true;
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    users.extraUsers = [
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      { name = "gitlab";
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        group = "gitlab";
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        home = "${cfg.stateDir}/home";
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        shell = "${pkgs.bash}/bin/bash";
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        uid = config.ids.uids.gitlab;
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      } ];
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    users.extraGroups = [
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      { name = "gitlab";
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        gid = config.ids.gids.gitlab;
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      } ];
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    systemd.services.gitlab-sidekiq = {
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      after = [ "network.target" "redis.service" ];
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      wantedBy = [ "multi-user.target" ];
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      environment.HOME = "${cfg.stateDir}/home";
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      environment.GEM_HOME = gemHome;
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      environment.UNICORN_PATH = "${cfg.stateDir}/";
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      environment.GITLAB_PATH = "${pkgs.gitlab}/share/gitlab/";
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      environment.GITLAB_APPLICATION_LOG_PATH = "${cfg.stateDir}/log/application.log";
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      environment.GITLAB_SATELLITES_PATH = "${cfg.stateDir}/satellites";
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      environment.GITLAB_SHELL_PATH = "${pkgs.gitlab-shell}";
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      environment.GITLAB_REPOSITORIES_PATH = "${cfg.stateDir}/repositories";
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      environment.GITLAB_SHELL_HOOKS_PATH = "${cfg.stateDir}/shell/hooks";
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      environment.BUNDLE_GEMFILE = "${pkgs.gitlab}/share/gitlab/Gemfile";
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      environment.GITLAB_EMAIL_FROM = "${cfg.emailFrom}";
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      environment.GITLAB_SHELL_CONFIG_PATH = "${cfg.stateDir}/shell/config.yml";
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      environment.GITLAB_SHELL_SECRET_PATH = "${cfg.stateDir}/config/gitlab_shell_secret";
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      environment.GITLAB_HOST = "${cfg.host}";
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      environment.GITLAB_PORT = "${toString cfg.port}";
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      environment.GITLAB_DATABASE_HOST = "${cfg.databaseHost}";
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      environment.GITLAB_DATABASE_PASSWORD = "${cfg.databasePassword}";
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      environment.RAILS_ENV = "production";
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      path = with pkgs; [
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        config.services.postgresql.package
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        gitAndTools.git
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        ruby
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        openssh
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        nodejs
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      ];
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      serviceConfig = {
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        Type = "simple";
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        User = "gitlab";
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        Group = "gitlab";
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        TimeoutSec = "300";
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        WorkingDirectory = "${pkgs.gitlab}/share/gitlab";
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        ExecStart="${bundler}/bin/bundle exec \"sidekiq -q post_receive -q mailer -q system_hook -q project_web_hook -q gitlab_shell -q common -q default -e production -P ${cfg.stateDir}/tmp/sidekiq.pid\"";
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      };
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    };
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    systemd.services.gitlab = {
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      after = [ "network.target" "postgresql.service" "redis.service" ];
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      wantedBy = [ "multi-user.target" ];
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      environment.HOME = "${cfg.stateDir}/home";
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      environment.GEM_HOME = gemHome;
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      environment.UNICORN_PATH = "${cfg.stateDir}/";
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      environment.GITLAB_PATH = "${pkgs.gitlab}/share/gitlab/";
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      environment.GITLAB_APPLICATION_LOG_PATH = "${cfg.stateDir}/log/application.log";
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      environment.GITLAB_SATELLITES_PATH = "${cfg.stateDir}/satellites";
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      environment.GITLAB_SHELL_PATH = "${pkgs.gitlab-shell}";
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      environment.GITLAB_REPOSITORIES_PATH = "${cfg.stateDir}/repositories";
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      environment.GITLAB_SHELL_HOOKS_PATH = "${cfg.stateDir}/shell/hooks";
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      environment.BUNDLE_GEMFILE = "${pkgs.gitlab}/share/gitlab/Gemfile";
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      environment.GITLAB_EMAIL_FROM = "${cfg.emailFrom}";
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      environment.GITLAB_HOST = "${cfg.host}";
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      environment.GITLAB_PORT = "${toString cfg.port}";
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      environment.GITLAB_DATABASE_HOST = "${cfg.databaseHost}";
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      environment.GITLAB_DATABASE_PASSWORD = "${cfg.databasePassword}";
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      environment.RAILS_ENV = "production";
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      path = with pkgs; [
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        config.services.postgresql.package
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        gitAndTools.git
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        ruby
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        openssh
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        nodejs
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      ];
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      preStart = ''
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        # TODO: use env vars
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        mkdir -p ${cfg.stateDir}
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        mkdir -p ${cfg.stateDir}/log
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        mkdir -p ${cfg.stateDir}/satellites
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        mkdir -p ${cfg.stateDir}/repositories
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        mkdir -p ${cfg.stateDir}/shell/hooks
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        mkdir -p ${cfg.stateDir}/tmp/pids
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        mkdir -p ${cfg.stateDir}/tmp/sockets
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        rm -rf ${cfg.stateDir}/config
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        mkdir -p ${cfg.stateDir}/config
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        # TODO: What exactly is gitlab-shell doing with the secret?
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        head -c 20 /dev/urandom > ${cfg.stateDir}/config/gitlab_shell_secret
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        mkdir -p ${cfg.stateDir}/home/.ssh
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        touch ${cfg.stateDir}/home/.ssh/authorized_keys
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        cp -rf ${pkgs.gitlab}/share/gitlab/config ${cfg.stateDir}/
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        cp ${pkgs.gitlab}/share/gitlab/VERSION ${cfg.stateDir}/VERSION
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        ln -fs ${pkgs.writeText "database.yml" databaseYml} ${cfg.stateDir}/config/database.yml
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        ln -fs ${pkgs.writeText "unicorn.rb" unicornConfig} ${cfg.stateDir}/config/unicorn.rb
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        chown -R gitlab:gitlab ${cfg.stateDir}/
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        chmod -R 755 ${cfg.stateDir}/
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        if [ "${cfg.databaseHost}" = "127.0.0.1" ]; then
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          if ! test -e "${cfg.stateDir}/db-created"; then
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            psql postgres -c "CREATE ROLE gitlab WITH LOGIN NOCREATEDB NOCREATEROLE NOCREATEUSER ENCRYPTED PASSWORD '${cfg.databasePassword}'"
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            ${config.services.postgresql.package}/bin/createdb --owner gitlab gitlab || true
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            touch "${cfg.stateDir}/db-created"
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            # force=yes disables the manual-interaction yes/no prompt
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            # which breaks without an stdin.
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            force=yes ${bundler}/bin/bundle exec rake -f ${pkgs.gitlab}/share/gitlab/Rakefile gitlab:setup RAILS_ENV=production
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          fi
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        fi
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      # Install the shell required to push repositories
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      ln -fs ${pkgs.writeText "config.yml" gitlabShellYml} ${cfg.stateDir}/shell/config.yml
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      export GITLAB_SHELL_CONFIG_PATH=""${cfg.stateDir}/shell/config.yml
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      ${pkgs.gitlab-shell}/bin/install
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      # Change permissions in the last step because some of the
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      # intermediary scripts like to create directories as root.
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      chown -R gitlab:gitlab ${cfg.stateDir}/
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      chmod -R 755 ${cfg.stateDir}/
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      '';
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      serviceConfig = {
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        PermissionsStartOnly = true; # preStart must be run as root
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        Type = "simple";
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        User = "gitlab";
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        Group = "gitlab";
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        TimeoutSec = "300";
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        WorkingDirectory = "${pkgs.gitlab}/share/gitlab";
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        ExecStart="${bundler}/bin/bundle exec \"unicorn -c ${cfg.stateDir}/config/unicorn.rb -E production\"";
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      };
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    };
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  };
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}
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