modules/private/buildbot/default.nix

   1 { lib, pkgs, config, myconfig, ... }:
   2 let
   3   varDir = "/var/lib/buildbot";
   4   buildbot_common = pkgs.python3Packages.buildPythonPackage rec {
   5     name = "buildbot_common";
   6     src = ./common;
   7     format = "other";
   8     installPhase = ''
   9       mkdir -p $out/${pkgs.python3.pythonForBuild.sitePackages}
  10       cp -a $src $out/${pkgs.python3.pythonForBuild.sitePackages}/buildbot_common
  11       '';
  12   };
  13   buildbot = pkgs.python3Packages.buildbot-full;
  14 in
  15 {
  16   options = {
  17     myServices.buildbot.enable = lib.mkOption {
  18       type = lib.types.bool;
  19       default = false;
  20       description = ''
  21         Whether to enable buildbot.
  22       '';
  23     };
  24   };
  25
  26   config = lib.mkIf config.myServices.buildbot.enable {
  27     ids.uids.buildbot = myconfig.env.buildbot.user.uid;
  28     ids.gids.buildbot = myconfig.env.buildbot.user.gid;
  29
  30     users.groups.buildbot.gid = config.ids.gids.buildbot;
  31     users.users.buildbot = {
  32       name = "buildbot";
  33       uid = config.ids.uids.buildbot;
  34       group = "buildbot";
  35       description = "Buildbot user";
  36       home = varDir;
  37       extraGroups = [ "keys" ];
  38     };
  39
  40     services.websites.tools.watchPaths = lib.attrsets.mapAttrsToList
  41       (k: project: "/var/secrets/buildbot/${project.name}/webhook-httpd-include")
  42       myconfig.env.buildbot.projects;
  43
  44     services.websites.tools.vhostConfs.git.extraConfig = lib.attrsets.mapAttrsToList (k: project: ''
  45         RedirectMatch permanent "^/buildbot/${project.name}$" "/buildbot/${project.name}/"
  46         RewriteEngine On
  47         RewriteRule ^/buildbot/${project.name}/ws(.*)$   unix:///run/buildbot/${project.name}.sock|ws://git.immae.eu/ws$1 [P,NE,QSA,L]
  48         ProxyPass /buildbot/${project.name}/             unix:///run/buildbot/${project.name}.sock|http://${project.name}-git.immae.eu/
  49         ProxyPassReverse /buildbot/${project.name}/      unix:///run/buildbot/${project.name}.sock|http://${project.name}-git.immae.eu/
  50         <Location /buildbot/${project.name}/>
  51           Use LDAPConnect
  52           Require ldap-group cn=users,ou=${project.name},cn=buildbot,ou=services,dc=immae,dc=eu
  53
  54           SetEnvIf X-Url-Scheme https HTTPS=1
  55           ProxyPreserveHost On
  56         </Location>
  57         <Location /buildbot/${project.name}/change_hook/base>
  58           <RequireAny>
  59             Require local
  60             Require ldap-group cn=users,ou=${project.name},cn=buildbot,ou=services,dc=immae,dc=eu
  61             Include /var/secrets/buildbot/${project.name}/webhook-httpd-include
  62           </RequireAny>
  63         </Location>
  64         '') myconfig.env.buildbot.projects;
  65
  66     system.activationScripts = lib.attrsets.mapAttrs' (k: project: lib.attrsets.nameValuePair "buildbot-${project.name}" {
  67       deps = [ "users" "wrappers" ];
  68       text = project.activationScript;
  69     }) myconfig.env.buildbot.projects;
  70
  71     secrets.keys = (
  72       lib.lists.flatten (
  73         lib.attrsets.mapAttrsToList (k: project:
  74           lib.attrsets.mapAttrsToList (k: v:
  75             {
  76               permissions = "0600";
  77               user = "buildbot";
  78               group = "buildbot";
  79               text = v;
  80               dest = "buildbot/${project.name}/${k}";
  81             }
  82           ) project.secrets
  83           ++ [
  84             {
  85               permissions = "0600";
  86               user = "wwwrun";
  87               group = "wwwrun";
  88               text = lib.optionalString (lib.attrsets.hasAttr "webhookTokens" project) ''
  89                 Require expr "req('Access-Key') in { ${builtins.concatStringsSep ", " (map (x: "'${x}'") project.webhookTokens)} }"
  90                 '';
  91               dest = "buildbot/${project.name}/webhook-httpd-include";
  92             }
  93           ]
  94         ) myconfig.env.buildbot.projects
  95       )
  96     ) ++ [
  97       {
  98         permissions = "0600";
  99         user = "buildbot";
 100         group = "buildbot";
 101         text = myconfig.env.buildbot.ldap.password;
 102         dest = "buildbot/ldap";
 103       }
 104       {
 105         permissions = "0600";
 106         user = "buildbot";
 107         group = "buildbot";
 108         text = builtins.readFile "${myconfig.privateFiles}/buildbot_ssh_key";
 109         dest = "buildbot/ssh_key";
 110       }
 111     ];
 112
 113     services.filesWatcher = lib.attrsets.mapAttrs' (k: project: lib.attrsets.nameValuePair "buildbot-${project.name}" {
 114       restart = true;
 115       paths = [
 116         "/var/secrets/buildbot/ldap"
 117         "/var/secrets/buildbot/ssh_key"
 118       ] ++ lib.attrsets.mapAttrsToList (k: v: "/var/secrets/buildbot/${project.name}/${k}") project.secrets;
 119     }) myconfig.env.buildbot.projects;
 120
 121     systemd.services = lib.attrsets.mapAttrs' (k: project: lib.attrsets.nameValuePair "buildbot-${project.name}" {
 122       description = "Buildbot Continuous Integration Server ${project.name}.";
 123       after = [ "network-online.target" ];
 124       wantedBy = [ "multi-user.target" ];
 125       path = project.packages pkgs ++ (project.pythonPackages buildbot.pythonModule pkgs);
 126       preStart = let
 127         master-cfg = "${buildbot_common}/${pkgs.python3.pythonForBuild.sitePackages}/buildbot_common/master.cfg";
 128         tac_file = pkgs.writeText "buildbot.tac" ''
 129             import os
 130
 131             from twisted.application import service
 132             from buildbot.master import BuildMaster
 133
 134             basedir = '${varDir}/${project.name}'
 135             rotateLength = 10000000
 136             maxRotatedFiles = 10
 137             configfile = '${master-cfg}'
 138
 139             # Default umask for server
 140             umask = None
 141
 142             # if this is a relocatable tac file, get the directory containing the TAC
 143             if basedir == '.':
 144                 import os
 145                 basedir = os.path.abspath(os.path.dirname(__file__))
 146
 147             # note: this line is matched against to check that this is a buildmaster
 148             # directory; do not edit it.
 149             application = service.Application('buildmaster')
 150             from twisted.python.logfile import LogFile
 151             from twisted.python.log import ILogObserver, FileLogObserver
 152             logfile = LogFile.fromFullPath(os.path.join(basedir, "twistd.log"), rotateLength=rotateLength,
 153                                             maxRotatedFiles=maxRotatedFiles)
 154             application.setComponent(ILogObserver, FileLogObserver(logfile).emit)
 155
 156             m = BuildMaster(basedir, configfile, umask)
 157             m.setServiceParent(application)
 158             m.log_rotation.rotateLength = rotateLength
 159             m.log_rotation.maxRotatedFiles = maxRotatedFiles
 160           '';
 161       in ''
 162       if [ ! -f ${varDir}/${project.name}/buildbot.tac ]; then
 163         ${buildbot}/bin/buildbot create-master -c "${master-cfg}" "${varDir}/${project.name}"
 164         rm -f ${varDir}/${project.name}/master.cfg.sample
 165         rm -f ${varDir}/${project.name}/buildbot.tac
 166       fi
 167       ln -sf ${tac_file} ${varDir}/${project.name}/buildbot.tac
 168       # different buildbots may be trying that simultaneously, add the || true to avoid complaining in case of race
 169       install -Dm600 -o buildbot -g buildbot -T /var/secrets/buildbot/ssh_key ${varDir}/buildbot_key || true
 170       buildbot_secrets=${varDir}/${project.name}/secrets
 171       install -m 0700 -o buildbot -g buildbot -d $buildbot_secrets
 172       install -Dm600 -o buildbot -g buildbot -T /var/secrets/buildbot/ldap $buildbot_secrets/ldap
 173       ${builtins.concatStringsSep "\n" (lib.attrsets.mapAttrsToList
 174         (k: v: "install -Dm600 -o buildbot -g buildbot -T /var/secrets/buildbot/${project.name}/${k} $buildbot_secrets/${k}") project.secrets
 175       )}
 176       '';
 177       environment = let
 178         project_env = lib.attrsets.mapAttrs' (k: v: lib.attrsets.nameValuePair "BUILDBOT_${k}" v) project.environment;
 179         buildbot_config = pkgs.python3Packages.buildPythonPackage (rec {
 180           name = "buildbot_config-${project.name}";
 181           src = ./projects + "/${project.name}";
 182           format = "other";
 183           installPhase = ''
 184             mkdir -p $out/${pkgs.python3.pythonForBuild.sitePackages}
 185             cp -a $src $out/${pkgs.python3.pythonForBuild.sitePackages}/buildbot_config
 186             '';
 187         });
 188         HOME = "${varDir}/${project.name}";
 189         PYTHONPATH = "${buildbot.pythonModule.withPackages (self: project.pythonPackages self pkgs ++ [
 190           pkgs.python3Packages.wokkel
 191           pkgs.python3Packages.treq pkgs.python3Packages.ldap3 buildbot
 192           pkgs.python3Packages.buildbot-worker
 193           buildbot_common buildbot_config
 194         ])}/${buildbot.pythonModule.sitePackages}${if project.pythonPathHome then ":${varDir}/${project.name}/.local/${pkgs.python3.pythonForBuild.sitePackages}" else ""}";
 195       in project_env // { inherit PYTHONPATH HOME; };
 196
 197       serviceConfig = {
 198         Type = "forking";
 199         User = "buildbot";
 200         Group = "buildbot";
 201         RuntimeDirectory = "buildbot";
 202         RuntimeDirectoryPreserve = "yes";
 203         StateDirectory = "buildbot";
 204         SupplementaryGroups = "keys";
 205         WorkingDirectory = "${varDir}/${project.name}";
 206         ExecStart = "${buildbot}/bin/buildbot start";
 207       };
 208     }) myconfig.env.buildbot.projects;
 209   };
 210 }