nixpkgs/modules/services/misc/disnix.nix

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# Disnix server
{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.services.disnix;
disnix_activation_scripts = pkgs.disnix_activation_scripts.override (origArgs: {
enableApacheWebApplication = config.services.httpd.enable;
enableAxis2WebService = config.services.tomcat.axis2.enable;
enableEjabberdDump = config.services.ejabberd.enable;
enableMySQLDatabase = config.services.mysql.enable;
enableTomcatWebApplication = config.services.tomcat.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;
}
// optionalAttrs (config.nixpkgs.system != "") { system = config.nixpkgs.system; }
// 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 (cfg.publishInfrastructure.enableAuthentication) (
optionalAttrs (config.services.mysql.enable) { mysqlUsername = "root"; mysqlPassword = builtins.readFile config.services.mysql.rootPassword; })
)
;
jobs = {
disnix =
{ description = "Disnix server";
startOn = "started dbus";
script =
''
export PATH=/var/run/current-system/sw/bin:/var/run/current-system/sw/sbin
export HOME=/root
${pkgs.disnix}/bin/disnix-service --activation-modules-dir=${disnix_activation_scripts}/libexec/disnix/activation-scripts
'';
};
} // optionalAttrs cfg.publishAvahi {
disnixAvahi =
{ description = "Disnix Avahi publisher";
startOn = "started avahi-daemon";
exec =
''
${pkgs.avahi}/bin/avahi-publish-service disnix-$(${pkgs.nettools}/bin/hostname) _disnix._tcp 22 \
"hostname=\"$(${pkgs.nettools}/bin/hostname)\"" \
"system=\"$(uname -m)-linux\"" \
"mem=$(grep 'MemTotal:' /proc/meminfo | sed -e 's/kB//' -e 's/MemTotal://' -e 's/ //g')" \
${optionalString (cfg.useWebServiceInterface) ''"targetEPR=\"http://(${pkgs.nettools}/bin/hostname):8080/DisnixWebService/services/DisnixWebService\""''} \
${optionalString (config.services.httpd.enable) ''"documentRoot=\"${config.services.httpd.documentRoot}\""''} \
${optionalString (config.services.mysql.enable) ''"mysqlPort=3306"''} \
${optionalString (config.services.tomcat.enable) ''"tomcatPort=8080"''} \
"supportedTypes=[$(for i in ${disnix_activation_scripts}/libexec/disnix/activation-scripts/*; do echo -n " \"$(basename $i)\""; done) ]" \
${concatMapStrings (deploymentAttrName: let deploymentAttrValue = getAttr deploymentAttrName (config.deployment); in ''${deploymentAttrName}=\"${deploymentAttrValue}\" '' ) (attrNames (config.deployment))}
'';
};
};
};
}