nixpkgs/nixos/modules/services/misc/disnix.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

167 lines
5.9 KiB
Nix

# Disnix server
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.disnix;
dysnomia = pkgs.dysnomia.override (origArgs: {
enableApacheWebApplication = config.services.httpd.enable;
enableAxis2WebService = config.services.tomcat.axis2.enable;
enableEjabberdDump = config.services.ejabberd.enable;
enableMySQLDatabase = config.services.mysql.enable;
enablePostgreSQLDatabase = config.services.postgresql.enable;
enableSubversionRepository = config.services.svnserve.enable;
enableTomcatWebApplication = config.services.tomcat.enable;
enableMongoDatabase = config.services.mongodb.enable;
});
in
{
###### interface
options = {
services.disnix = {
enable = mkOption {
default = false;
description = "Whether to enable Disnix";
};
useWebServiceInterface = mkOption {
default = false;
description = "Whether to enable the DisnixWebService interface running on Apache Tomcat";
};
publishInfrastructure = {
enable = mkOption {
default = false;
description = "Whether to publish capabilities/properties of this machine in as attributes in the infrastructure option";
};
enableAuthentication = mkOption {
default = false;
description = "Whether to publish authentication credentials through the infrastructure attribute (not recommended in combination with Avahi)";
};
};
infrastructure = mkOption {
default = {};
description = "List of name value pairs containing properties for the infrastructure model";
};
publishAvahi = mkOption {
default = false;
description = "Whether to publish capabilities/properties as a Disnix service through Avahi";
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.disnix ] ++ optional cfg.useWebServiceInterface pkgs.DisnixWebService;
services.dbus.enable = true;
services.dbus.packages = [ pkgs.disnix ];
services.avahi.enable = cfg.publishAvahi;
services.tomcat.enable = cfg.useWebServiceInterface;
services.tomcat.extraGroups = [ "disnix" ];
services.tomcat.javaOpts = "${optionalString cfg.useWebServiceInterface "-Djava.library.path=${pkgs.libmatthew_java}/lib/jni"} ";
services.tomcat.sharedLibs = optional cfg.useWebServiceInterface "${pkgs.DisnixWebService}/share/java/DisnixConnection.jar"
++ optional cfg.useWebServiceInterface "${pkgs.dbus_java}/share/java/dbus.jar";
services.tomcat.webapps = optional cfg.useWebServiceInterface pkgs.DisnixWebService;
users.extraGroups = singleton
{ name = "disnix";
gid = config.ids.gids.disnix;
};
services.disnix.infrastructure =
optionalAttrs (cfg.publishInfrastructure.enable)
( { hostname = config.networking.hostName;
#targetHost = config.deployment.targetHost;
system = if config.nixpkgs.system == "" then builtins.currentSystem else config.nixpkgs.system;
supportedTypes = (import "${pkgs.stdenv.mkDerivation {
name = "supportedtypes";
buildCommand = ''
( echo -n "[ "
cd ${dysnomia}/libexec/dysnomia
for i in *
do
echo -n "\"$i\" "
done
echo -n " ]") > $out
'';
}}");
}
#// optionalAttrs (cfg.useWebServiceInterface) { targetEPR = "http://${config.deployment.targetHost}:8080/DisnixWebService/services/DisnixWebService"; }
// optionalAttrs (config.services.httpd.enable) { documentRoot = config.services.httpd.documentRoot; }
// optionalAttrs (config.services.mysql.enable) { mysqlPort = config.services.mysql.port; }
// optionalAttrs (config.services.tomcat.enable) { tomcatPort = 8080; }
// optionalAttrs (config.services.svnserve.enable) { svnBaseDir = config.services.svnserve.svnBaseDir; }
// optionalAttrs (cfg.publishInfrastructure.enableAuthentication) (
optionalAttrs (config.services.mysql.enable) { mysqlUsername = "root"; mysqlPassword = readFile config.services.mysql.rootPassword; })
)
;
services.disnix.publishInfrastructure.enable = cfg.publishAvahi;
jobs = {
disnix =
{ description = "Disnix server";
wantedBy = [ "multi-user.target" ];
after = [ "dbus.service" ]
++ optional config.services.httpd.enable "httpd.service"
++ optional config.services.mysql.enable "mysql.service"
++ optional config.services.tomcat.enable "tomcat.service"
++ optional config.services.svnserve.enable "svnserve.service"
++ optional config.services.mongodb.enable "mongodb.service";
restartIfChanged = false;
path = [ pkgs.nix pkgs.disnix pkgs.dysnomia ];
environment = {
HOME = "/root";
};
exec = "disnix-service";
};
} // optionalAttrs cfg.publishAvahi {
disnixAvahi =
{ description = "Disnix Avahi publisher";
startOn = "started avahi-daemon";
exec =
''
${pkgs.avahi}/bin/avahi-publish-service disnix-${config.networking.hostName} _disnix._tcp 22 \
"mem=$(grep 'MemTotal:' /proc/meminfo | sed -e 's/kB//' -e 's/MemTotal://' -e 's/ //g')" \
${concatMapStrings (infrastructureAttrName:
let infrastructureAttrValue = getAttr infrastructureAttrName (cfg.infrastructure);
in
if isInt infrastructureAttrValue then
''${infrastructureAttrName}=${toString infrastructureAttrValue} \
''
else
''${infrastructureAttrName}=\"${infrastructureAttrValue}\" \
''
) (attrNames (cfg.infrastructure))}
'';
};
};
};
}