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|
{ config, lib, pkgs, ... }:
let
inherit (builtins)
elem isBool isString ;
inherit (lib)
concatMapStringsSep concatStringsSep filter filterAttrs
mapAttrsToList mkIf mkOption optionalString ;
inherit (lib.types)
attrsOf bool either int listOf nullOr path str submodule ;
cfg = config.nixsap.apps.logrotate;
concatNonEmpty = sep: list: concatStringsSep sep (filter (s: s != "") list);
explicit = filterAttrs (n: v: n != "_module" && v != null);
mandatory = t: mkOption { type = t; };
optional = t: mkOption { type = nullOr t; default = null; };
mkConf = name: opts:
let
files = concatMapStringsSep " " (f: ''"${f}"'') opts.files;
show = k: v:
if elem k ["postrotate" "preremove" "prerotate"]
then " ${k}\n ${v}\n endscript"
else if isBool v then optionalString v " ${k}"
else if isString v then " ${k} ${v}"
else " ${k} ${toString v}";
in pkgs.writeText "logrotate-${name}.conf" ''
${files} {
${concatNonEmpty "\n" (mapAttrsToList show (explicit opts.directives))}
}
'';
configFile = pkgs.writeText "logrotate.conf" ''
compress
compresscmd ${pkgs.gzip}/bin/gzip
compressext .gz
compressoptions -6
rotate 4
uncompresscmd ${pkgs.gzip}/bin/gunzip
${concatMapStringsSep "\n" (f: "include ${f}") (mapAttrsToList mkConf (explicit cfg.conf))}
'';
entry = {
options = {
files = mandatory (listOf path);
directives = {
compress = optional bool;
compresscmd = optional path;
compressext = optional str;
compressoptions = optional str;
copy = optional bool;
copytruncate = optional bool;
create = optional (either bool str);
daily = optional bool;
dateext = optional bool;
dateformat = optional str;
dateyesterday = optional bool;
delaycompress = optional bool;
extension = optional str;
firstaction = optional path;
hourly = optional bool;
ifempty = optional bool;
lastaction = optional path;
mail = optional str;
mailfirst = optional bool;
maillast = optional bool;
maxage = optional int;
maxsize = optional int;
minsize = optional int;
missingok = optional bool;
monthly = optional bool;
nocompress = optional bool;
nocopy = optional bool;
nocopytruncate = optional bool;
nocreate = optional bool;
nodateext = optional bool;
nodelaycompress = optional bool;
nomail = optional bool;
nomissingok = optional bool;
nosharedscripts = optional bool;
notifempty = optional bool;
postrotate = optional path;
preremove = optional path;
prerotate = optional path;
rotate = optional int;
sharedscripts = optional bool;
size = optional int;
su = optional str;
uncompresscmd = optional path;
weekly = optional bool;
yearly = optional bool;
};
};
};
exec = pkgs.writeBashScriptBin "logrotate" ''
exec ${pkgs.logrotate}/bin/logrotate \
-s '${cfg.stateDir}/status' \
${optionalString cfg.verbose " -v"} \
${optionalString (cfg.mail != null) " -m '${cfg.mail}'"} \
${configFile}
'';
in {
options.nixsap.apps.logrotate = {
stateDir = mkOption {
description = "Directory for logrotate state file";
type = path;
default = "/logrotate";
};
conf = mkOption {
description = "Logrotate configuration";
type = attrsOf (submodule entry);
default = {};
};
mail = mkOption {
description = ''
Tells logrotate which command to use when mailing logs. This command
should accept two arguments: 1) the subject of the message, and 2)
the recipient.
'';
type = nullOr path;
default = null;
};
verbose = mkOption {
description = "Turns on verbose mode.";
type = bool;
default = true;
};
startAt = mkOption {
description = "Time to start in systemd format";
type = str;
default = "hourly";
};
};
config = mkIf ({} != explicit cfg.conf) {
systemd.services.logrotate = {
description = "rotates, compresses, and mails system logs";
inherit (cfg) startAt;
preStart = ''
mkdir -p '${cfg.stateDir}'
chown -Rc root:root '${cfg.stateDir}'
chmod -Rc u=rwX,g=rX,o= '${cfg.stateDir}'
'';
serviceConfig = {
ExecStart = "${exec}/bin/logrotate";
};
};
};
}
|
