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nixpkgs/nixos/modules/services/misc/dysnomia.nix

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Nix

{pkgs, lib, config, ...}:
with lib;
let
cfg = config.dysnomia;
printProperties = properties:
concatMapStrings (propertyName:
let
property = properties."${propertyName}";
in
if isList property then "${propertyName}=(${lib.concatMapStrings (elem: "\"${toString elem}\" ") (properties."${propertyName}")})\n"
else "${propertyName}=\"${toString property}\"\n"
) (builtins.attrNames properties);
properties = pkgs.stdenv.mkDerivation {
name = "dysnomia-properties";
buildCommand = ''
cat > $out << "EOF"
${printProperties cfg.properties}
EOF
'';
};
containersDir = pkgs.stdenv.mkDerivation {
name = "dysnomia-containers";
buildCommand = ''
mkdir -p $out
cd $out
${concatMapStrings (containerName:
let
containerProperties = cfg.containers."${containerName}";
in
''
cat > ${containerName} <<EOF
${printProperties containerProperties}
type=${containerName}
EOF
''
) (builtins.attrNames cfg.containers)}
'';
};
linkMutableComponents = {containerName}:
''
mkdir ${containerName}
${concatMapStrings (componentName:
let
component = cfg.components."${containerName}"."${componentName}";
in
"ln -s ${component} ${containerName}/${componentName}\n"
) (builtins.attrNames (cfg.components."${containerName}" or {}))}
'';
componentsDir = pkgs.stdenv.mkDerivation {
name = "dysnomia-components";
buildCommand = ''
mkdir -p $out
cd $out
${concatMapStrings (containerName:
let
components = cfg.components."${containerName}";
in
linkMutableComponents { inherit containerName; }
) (builtins.attrNames cfg.components)}
'';
};
in
{
options = {
dysnomia = {
enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable Dysnomia";
};
enableAuthentication = mkOption {
type = types.bool;
default = false;
description = "Whether to publish privacy-sensitive authentication credentials";
};
package = mkOption {
type = types.path;
description = "The Dysnomia package";
};
properties = mkOption {
description = "An attribute set in which each attribute represents a machine property. Optionally, these values can be shell substitutions.";
default = {};
};
containers = mkOption {
description = "An attribute set in which each key represents a container and each value an attribute set providing its configuration properties";
default = {};
};
components = mkOption {
description = "An atttribute set in which each key represents a container and each value an attribute set in which each key represents a component and each value a derivation constructing its initial state";
default = {};
};
extraContainerProperties = mkOption {
description = "An attribute set providing additional container settings in addition to the default properties";
default = {};
};
extraContainerPaths = mkOption {
description = "A list of paths containing additional container configurations that are added to the search folders";
default = [];
};
extraModulePaths = mkOption {
description = "A list of paths containing additional modules that are added to the search folders";
default = [];
};
};
};
config = mkIf cfg.enable {
environment.etc = {
"dysnomia/containers" = {
source = containersDir;
};
"dysnomia/components" = {
source = componentsDir;
};
"dysnomia/properties" = {
source = properties;
};
};
environment.variables = {
DYSNOMIA_STATEDIR = "/var/state/dysnomia-nixos";
DYSNOMIA_CONTAINERS_PATH = "${lib.concatMapStrings (containerPath: "${containerPath}:") cfg.extraContainerPaths}/etc/dysnomia/containers";
DYSNOMIA_MODULES_PATH = "${lib.concatMapStrings (modulePath: "${modulePath}:") cfg.extraModulePaths}/etc/dysnomia/modules";
};
environment.systemPackages = [ cfg.package ];
dysnomia.package = 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;
});
dysnomia.properties = {
hostname = config.networking.hostName;
system = if config.nixpkgs.system == "" then builtins.currentSystem else config.nixpkgs.system;
supportedTypes = (import "${pkgs.stdenv.mkDerivation {
name = "supportedtypes";
buildCommand = ''
( echo -n "[ "
cd ${cfg.package}/libexec/dysnomia
for i in *
do
echo -n "\"$i\" "
done
echo -n " ]") > $out
'';
}}");
};
dysnomia.containers = lib.recursiveUpdate ({
process = {};
wrapper = {};
}
// lib.optionalAttrs (config.services.httpd.enable) { apache-webapplication = {
documentRoot = config.services.httpd.documentRoot;
}; }
// lib.optionalAttrs (config.services.tomcat.axis2.enable) { axis2-webservice = {}; }
// lib.optionalAttrs (config.services.ejabberd.enable) { ejabberd-dump = {
ejabberdUser = config.services.ejabberd.user;
}; }
// lib.optionalAttrs (config.services.mysql.enable) { mysql-database = {
mysqlPort = config.services.mysql.port;
} // lib.optionalAttrs cfg.enableAuthentication {
mysqlUsername = "root";
mysqlPassword = builtins.readFile (config.services.mysql.rootPassword);
};
}
// lib.optionalAttrs (config.services.postgresql.enable && cfg.enableAuthentication) { postgresql-database = {
postgresqlUsername = "root";
}; }
// lib.optionalAttrs (config.services.tomcat.enable) { tomcat-webapplication = {
tomcatPort = 8080;
}; }
// lib.optionalAttrs (config.services.mongodb.enable) { mongo-database = {}; }
// lib.optionalAttrs (config.services.svnserve.enable) { subversion-repository = {
svnBaseDir = config.services.svnserve.svnBaseDir;
}; }) cfg.extraContainerProperties;
system.activationScripts.dysnomia = ''
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
'';
};
}