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nixpkgs/nixos/modules/services/databases/4store-endpoint.nix
2014-11-16 17:04:54 +02:00

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1.6 KiB
Nix

{ config, lib, pkgs, ... }:
let
cfg = config.services.fourStoreEndpoint;
endpointUser = "fourstorehttp";
run = "${pkgs.su}/bin/su -s ${pkgs.stdenv.shell} ${endpointUser} -c";
in
with lib;
{
###### interface
options = {
services.fourStoreEndpoint = {
enable = mkOption {
default = false;
description = "Whether to enable 4Store SPARQL endpoint.";
};
database = mkOption {
default = config.services.fourStore.database;
description = "RDF database name to expose via the endpoint. Defaults to local 4Store database name.";
};
listenAddress = mkOption {
default = null;
description = "IP address to listen on.";
};
port = mkOption {
default = 8080;
description = "port to listen on.";
};
options = mkOption {
default = "";
description = "Extra CLI options to pass to 4Store's 4s-httpd process.";
};
};
};
###### implementation
config = mkIf cfg.enable {
assertions = singleton
{ assertion = cfg.enable -> cfg.database != "";
message = "Must specify 4Store database name";
};
users.extraUsers = singleton
{ name = endpointUser;
uid = config.ids.uids.fourstorehttp;
description = "4Store SPARQL endpoint user";
};
services.avahi.enable = true;
jobs.fourStoreEndpoint = {
name = "4store-endpoint";
startOn = "ip-up";
exec = ''
${run} '${pkgs.rdf4store}/bin/4s-httpd -D ${cfg.options} ${if cfg.listenAddress!=null then "-H ${cfg.listenAddress}" else "" } -p ${toString cfg.port} ${cfg.database}'
'';
};
};
}