nixos-config/system/marge-bot/default.nix

374 lines
11 KiB
Nix

# TODO:
# - [ ] Check that types.oneOf is the correct way to define options with multiple values
{
config,
lib,
pkgs,
...
}:
let
cfg = config.services.marge-bot;
inherit (lib)
mkOption
mkEnableOption
types
;
margeBotConfig = cfg.settings // {
gitlab-url = cfg.gitlabUrl;
auth-token-file = cfg.authTokenFile;
ssh-key-file = cfg.sshKeyFile;
};
margeBotConfigFile = pkgs.writeText "marge-bot-config.yaml" (
pkgs.lib.generators.toYAML { } margeBotConfig
);
in
{
options = {
services.marge-bot = {
enable = mkEnableOption "GitLab Marge Bot service";
package = mkOption {
type = types.package;
default = pkgs.marge-bot;
defaultText = "pkgs.marge-bot";
description = "Marge Bot package to use";
};
gitlabUrl = mkOption {
type = types.str;
default = "https://gitlab.com";
description = "GitLab instance URL";
example = "https://gitlab.example.com";
};
authTokenFile = mkOption {
type = types.str;
description = "Path to file containing GitLab authentication token";
};
sshKeyFile = mkOption {
type = types.str;
description = "Path to SSH private key file for Git operations";
};
user = mkOption {
type = types.str;
default = "gitlab-marge-bot";
description = "User account under which marge-bot runs";
};
group = mkOption {
type = types.str;
default = "gitlab-marge-bot";
description = "Group account under which marge-bot runs";
};
homeDirectory = mkOption {
type = types.str;
default = "/var/lib/marge-bot";
description = "Home directory for the marge-bot user";
};
settings = mkOption {
default = { };
type = types.submodule {
freeformType =
with types;
attrsOf (oneOf [
str
bool
int
float
(listOf str)
]);
options = {
# Based on https://marge-bot.readthedocs.io/en/latest/configuration
use-https = mkOption {
type = types.bool;
default = false;
description = "Use HTTP(S) instead of SSH for GIT repository access";
};
embargo = mkOption {
type = types.nullOr types.str;
default = null;
example = "Friday 1pm - Monday 9am";
description = ''
Time(s) during which no merging is to take place.
Example: "Friday 1pm - Monday 9am"
'';
};
use-merge-strategy = mkOption {
type = types.bool;
default = false;
description = ''
Use git merge instead of git rebase to update the source branch (EXPERIMENTAL).
If you need to use a strict no-rebase workflow.
'';
};
rebase-remotely = mkOption {
type = types.bool;
default = false;
description = ''
Instead of rebasing in a local clone of the repository, use GitLab's
built-in rebase functionality, via their API. Note that Marge can't add
information in the commits in this case.
'';
};
add-tested = mkOption {
type = types.bool;
default = false;
description = ''
Add "Tested: marge-bot <$MR_URL>" for the final commit on branch after it passed CI.
'';
};
batch = mkOption {
type = types.bool;
default = false;
description = "Enable processing MRs in batches";
};
add-part-of = mkOption {
type = types.bool;
default = false;
description = ''
Add "Part-of: <$MR_URL>" to each commit in MR.
'';
};
batch-branch-name = mkOption {
type = types.str;
default = "marge_bot_batch_merge_job";
description = "Branch name when batching is enabled";
};
add-reviewers = mkOption {
type = types.bool;
default = false;
description = ''
Add "Reviewed-by: $approver" for each approver of MR to each commit in MR.
'';
};
keep-committers = mkOption {
type = types.bool;
default = false;
description = "Keep the original commit info during rebases";
};
keep-reviewers = mkOption {
type = types.bool;
default = false;
description = ''
Ensure previous "Reviewed-by: $approver" aren't dropped by --add-reviewers
'';
};
impersonate-approvers = mkOption {
type = types.bool;
default = false;
description = "Marge-bot pushes effectively don't change approval status";
};
merge-order = mkOption {
type = types.enum [
"created_at"
"updated_at"
"assigned_at"
];
default = "created_at";
description = ''
Order marge merges assigned requests.
Options: created_at (default), updated_at or assigned_at.
'';
};
approval-reset-timeout = mkOption {
type = types.str;
default = "0s";
description = ''
How long to wait for approvals to reset after pushing.
Only useful with the "new commits remove all approvals" option in a project's settings.
This is to handle the potential race condition where approvals don't reset in GitLab
after a force push due to slow processing of the event.
'';
};
project-regexp = mkOption {
type = types.str;
default = ".*";
example = "some_group/.*";
description = ''
Only process projects that match; e.g. 'some_group/.*' or '(?!exclude/me)'.
'';
};
ci-timeout = mkOption {
type = types.str;
default = "15min";
description = "How long to wait for CI to pass";
};
git-timeout = mkOption {
type = types.str;
default = "120s";
description = "How long a single git operation can take";
};
git-reference-repo = mkOption {
type = types.nullOr types.str;
default = null;
description = "A reference repo to be used when git cloning";
};
branch-regexp = mkOption {
type = types.str;
default = ".*";
description = ''
Only process MRs whose target branches match the given regular expression.
'';
};
source-branch-regexp = mkOption {
type = types.str;
default = ".*";
description = ''
Only process MRs whose source branches match the given regular expression.
'';
};
debug = mkOption {
type = types.bool;
default = false;
description = "Debug logging (includes all HTTP requests etc)";
};
run-manual-jobs = mkOption {
type = types.bool;
default = false;
description = "Add this flag to have Marge run on manual jobs within the pipeline";
};
use-no-ff-batches = mkOption {
type = types.bool;
default = false;
description = "Disable fast forwarding when merging MR batches";
};
use-merge-commit-batches = mkOption {
type = types.bool;
default = false;
description = ''
Use merge commit when creating batches, so that the commits in the batch MR
will be the same with in individual MRs. Requires sudo scope in the access token.
'';
};
skip-ci-batches = mkOption {
type = types.bool;
default = false;
description = "Skip CI when updating individual MRs when using batches";
};
cli = mkOption {
type = types.bool;
default = false;
description = "Run marge-bot as a single CLI command, not a service";
};
guarantee-final-pipeline = mkOption {
type = types.bool;
default = false;
description = "Guaranteed final pipeline when assigned to marge-bot";
};
exc-comment = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Provide additional text, like a log URL, to append to some exception-related MR comments.
'';
};
custom-approver = mkOption {
type = types.listOf types.str;
default = [ ];
description = ''
Specify one or more approver usernames to accept instead of asking GitLab.
For CE approval use.
'';
};
custom-approvals-required = mkOption {
type = types.int;
default = 0;
description = ''
Required number of approvals from --custom-approval.
For CE approval use.
'';
};
hooks-directory = mkOption {
type = types.nullOr types.str;
default = null;
description = "Path to the directory where your custom hooks are located";
};
};
};
description = ''
Settings for the marge-bot configuration.
See https://marge-bot.readthedocs.io/en/latest/configuration
for detailed information about all available settings.
'';
};
};
};
config = lib.mkIf cfg.enable {
warnings =
(lib.optional (lib.isStorePath cfg.authTokenFile) ''
services.marge-bot.authTokenFile points to a file in the Nix store.
You should use a quoted absolute path instead.
'')
++ (lib.optional (lib.isStorePath cfg.sshKeyFile) ''
services.marge-bot.sshKeyFile points to a file in the Nix store.
You should use a quoted absolute path instead.
'');
users.users.${cfg.user} = {
isSystemUser = true;
group = cfg.group;
home = cfg.homeDirectory;
createHome = true;
};
users.groups.${cfg.group} = { };
systemd.services.gitlab-marge-bot = {
description = "GitLab Marge Bot Service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
Type = "simple";
User = cfg.user;
Group = cfg.group;
WorkingDirectory = cfg.homeDirectory;
ExecStart = "${lib.getExe cfg.package} --config-file ${margeBotConfigFile}";
Restart = "on-failure";
RestartSec = "10s";
};
};
};
}