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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.solr;
in
{
options = {
services.solr = {
enable = mkEnableOption "Solr";
package = mkOption {
type = types.package;
default = pkgs.solr;
defaultText = literalExpression "pkgs.solr";
description = "Which Solr package to use.";
};
port = mkOption {
type = types.int;
default = 8983;
description = "Port on which Solr is ran.";
};
stateDir = mkOption {
type = types.path;
default = "/var/lib/solr";
description = "The solr home directory containing config, data, and logging files.";
};
extraJavaOptions = mkOption {
type = types.listOf types.str;
default = [];
description = "Extra command line options given to the java process running Solr.";
};
user = mkOption {
type = types.str;
default = "solr";
description = "User under which Solr is ran.";
};
group = mkOption {
type = types.str;
default = "solr";
description = "Group under which Solr is ran.";
};
};
};
config = mkIf cfg.enable {
environment.systemPackages = [ cfg.package ];
systemd.services.solr = {
after = [ "network.target" "remote-fs.target" "nss-lookup.target" "systemd-journald-dev-log.socket" ];
wantedBy = [ "multi-user.target" ];
environment = {
SOLR_HOME = "${cfg.stateDir}/data";
LOG4J_PROPS = "${cfg.stateDir}/log4j2.xml";
SOLR_LOGS_DIR = "${cfg.stateDir}/logs";
SOLR_PORT = "${toString cfg.port}";
};
path = with pkgs; [
gawk
procps
];
preStart = ''
mkdir -p "${cfg.stateDir}/data";
mkdir -p "${cfg.stateDir}/logs";
if ! test -e "${cfg.stateDir}/data/solr.xml"; then
install -D -m0640 ${cfg.package}/server/solr/solr.xml "${cfg.stateDir}/data/solr.xml"
install -D -m0640 ${cfg.package}/server/solr/zoo.cfg "${cfg.stateDir}/data/zoo.cfg"
fi
if ! test -e "${cfg.stateDir}/log4j2.xml"; then
install -D -m0640 ${cfg.package}/server/resources/log4j2.xml "${cfg.stateDir}/log4j2.xml"
fi
'';
serviceConfig = {
User = cfg.user;
Group = cfg.group;
ExecStart="${cfg.package}/bin/solr start -f -a \"${concatStringsSep " " cfg.extraJavaOptions}\"";
ExecStop="${cfg.package}/bin/solr stop";
};
};
users.users = optionalAttrs (cfg.user == "solr") {
solr = {
group = cfg.group;
home = cfg.stateDir;
createHome = true;
uid = config.ids.uids.solr;
};
};
users.groups = optionalAttrs (cfg.group == "solr") {
solr.gid = config.ids.gids.solr;
};
};
}
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