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# 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 pkgs.dysnomia ] ++ 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";
wants = [ "dysnomia.target" ];
wantedBy = [ "multi-user.target" ];
after = [ "dbus.service" ]
++ optional config.services.httpd.enable "httpd.service"
++ optional config.services.mysql.enable "mysql.service"
++ optional config.services.postgresql.enable "postgresql.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 dysnomia "/run/current-system/sw" ];
environment = {
HOME = "/root";
};
preStart = ''
mkdir -p /etc/systemd-mutable/system
if [ ! -f /etc/systemd-mutable/system/dysnomia.target ]
then
( echo "[Unit]"
echo "Description=Services that are activated and deactivated by Dysnomia"
echo "After=final.target"
) > /etc/systemd-mutable/system/dysnomia.target
fi
'';
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))}
'';
};
};
};
}
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