buildbot-nix/nix/master.nix

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{ config
, pkgs
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, lib
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, ...
}:
let
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cfg = config.services.buildbot-nix.master;
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in
{
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options = {
services.buildbot-nix.master = {
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enable = lib.mkEnableOption "buildbot-master";
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dbUrl = lib.mkOption {
type = lib.types.str;
default = "postgresql://@/buildbot";
description = "Postgresql database url";
};
github = {
tokenFile = lib.mkOption {
type = lib.types.path;
description = "Github token file";
};
webhookSecretFile = lib.mkOption {
type = lib.types.path;
description = "Github webhook secret file";
};
oauthSecretFile = lib.mkOption {
type = lib.types.path;
description = "Github oauth secret file";
};
# TODO: make this an option
# https://github.com/organizations/numtide/settings/applications
# Application name: BuildBot
# Homepage URL: https://buildbot.numtide.com
# Authorization callback URL: https://buildbot.numtide.com/auth/login
# oauth_token: 2516248ec6289e4d9818122cce0cbde39e4b788d
oauthId = lib.mkOption {
type = lib.types.str;
description = "Github oauth id. Used for the login button";
};
# Most likely you want to use the same user as for the buildbot
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user = lib.mkOption {
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type = lib.types.str;
description = "Github user that is used for the buildbot";
};
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admins = lib.mkOption {
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type = lib.types.listOf lib.types.str;
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default = [ ];
description = "Users that are allowed to login to buildbot, trigger builds and change settings";
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};
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topic = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = "build-with-buildbot";
description = ''
Projects that have this topic will be built by buildbot.
If null, all projects that the buildbot github user has access to, are built.
'';
};
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};
workersFile = lib.mkOption {
type = lib.types.path;
description = "File containing a list of nix workers";
};
buildSystems = lib.mkOption {
type = lib.types.listOf lib.types.str;
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default = [ pkgs.hostPlatform.system ];
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description = "Systems that we will be build";
};
evalMaxMemorySize = lib.mkOption {
type = lib.types.str;
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default = "2048";
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description = ''
Maximum memory size for nix-eval-jobs (in MiB) per
worker. After the limit is reached, the worker is
restarted.
'';
};
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domain = lib.mkOption {
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type = lib.types.str;
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description = "Buildbot domain";
example = "buildbot.numtide.com";
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};
};
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};
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config = lib.mkIf cfg.enable {
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services.buildbot-master = {
enable = true;
extraImports = ''
from datetime import timedelta
from buildbot_nix import GithubConfig, NixConfigurator
'';
extraConfig = ''
c["www"]["plugins"] = c["www"].get("plugins", {})
c["www"]["plugins"].update(
dict(base_react={}, waterfall_view={}, console_view={}, grid_view={})
)
'';
configurators = [
''
util.JanitorConfigurator(logHorizon=timedelta(weeks=4), hour=12, dayOfWeek=6)
''
''
NixConfigurator(
github=GithubConfig(
oauth_id=${builtins.toJSON cfg.github.oauthId},
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admins=${builtins.toJSON cfg.github.admins},
buildbot_user=${builtins.toJSON cfg.github.user},
topic=${builtins.toJSON cfg.github.topic},
),
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url=${builtins.toJSON config.services.buildbot-master.buildbotUrl},
nix_eval_max_memory_size=${builtins.toJSON cfg.evalMaxMemorySize},
nix_supported_systems=${builtins.toJSON cfg.buildSystems},
)
''
];
buildbotUrl =
let
host = config.services.nginx.virtualHosts.${cfg.domain};
hasSSL = host.forceSSL || host.addSSL;
in
"${if hasSSL then "https" else "http"}://${cfg.domain}/";
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dbUrl = config.services.buildbot-nix.master.dbUrl;
package = (pkgs.buildbot.overrideAttrs (old: {
patches = old.patches ++ [ ./0001-allow-secrets-to-be-group-readable.patch ];
}));
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pythonPackages = ps: [
ps.requests
ps.treq
ps.psycopg2
(ps.toPythonModule pkgs.buildbot-worker)
pkgs.buildbot-plugins.www
pkgs.buildbot-plugins.www-react
pkgs.buildbot-plugins.console-view
pkgs.buildbot-plugins.waterfall-view
pkgs.buildbot-plugins.grid-view
pkgs.buildbot-plugins.wsgi-dashboards
pkgs.buildbot-plugins.badges
(pkgs.python3.pkgs.callPackage ../default.nix { })
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];
};
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systemd.services.buildbot-master = {
after = [ "postgresql.service" ];
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serviceConfig = {
# in master.py we read secrets from $CREDENTIALS_DIRECTORY
LoadCredential = [
"github-token:${cfg.github.tokenFile}"
"github-webhook-secret:${cfg.github.webhookSecretFile}"
"github-oauth-secret:${cfg.github.oauthSecretFile}"
"buildbot-nix-workers:${cfg.workersFile}"
];
};
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};
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services.postgresql = {
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enable = true;
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ensureDatabases = [ "buildbot" ];
ensureUsers = [
{
name = "buildbot";
ensurePermissions."DATABASE buildbot" = "ALL PRIVILEGES";
}
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];
};
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services.nginx.enable = true;
services.nginx.virtualHosts.${cfg.domain} = {
locations."/".proxyPass = "http://127.0.0.1:${builtins.toString config.services.buildbot-master.port}/";
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locations."/sse" = {
proxyPass = "http://127.0.0.1:${builtins.toString config.services.buildbot-master.port}/sse";
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# proxy buffering will prevent sse to work
extraConfig = "proxy_buffering off;";
};
locations."/ws" = {
proxyPass = "http://127.0.0.1:${builtins.toString config.services.buildbot-master.port}/ws";
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proxyWebsockets = true;
# raise the proxy timeout for the websocket
extraConfig = "proxy_read_timeout 6000s;";
};
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# In this directory we store the lastest build store paths for nix attributes
locations."/nix-outputs".root = "/var/www/buildbot/";
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};
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# Allow buildbot-master to write to this directory
systemd.tmpfiles.rules = [
"d /var/www/buildbot/nix-outputs 0755 buildbot buildbot - -"
];
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};
}