184 lines
5.5 KiB
Nix
184 lines
5.5 KiB
Nix
{ self, lib, ... }:
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let
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clan-core = self;
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# syncthing_inventory = builtins.fromJSON (builtins.readFile ./src/tests/syncthing.json);
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syncthing_inventory = builtins.fromJSON (builtins.readFile ./src/tests/borgbackup.json);
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machines = machinesFromInventory syncthing_inventory;
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resolveTags =
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# Inventory, { machines :: [string], tags :: [string] }
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inventory: members: {
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machines =
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members.machines or [ ]
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++ (builtins.foldl' (
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acc: tag:
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let
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tagMembers = builtins.attrNames (
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lib.filterAttrs (_n: v: builtins.elem tag v.tags or [ ]) inventory.machines
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);
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in
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# throw "Machine tag ${tag} not found. Not machine with: tag ${tagName} not in inventory.";
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if tagMembers == [ ] then
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throw "Machine tag ${tag} not found. Not machine with: tag ${tag} not in inventory."
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else
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acc ++ tagMembers
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) [ ] members.tags or [ ]);
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};
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/*
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Returns a NixOS configuration for every machine in the inventory.
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machinesFromInventory :: Inventory -> { ${machine_name} :: NixOSConfiguration }
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*/
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machinesFromInventory =
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inventory:
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# For every machine in the inventory, build a NixOS configuration
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# For each machine generate config, forEach service, if the machine is used.
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builtins.mapAttrs (
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machineName: _:
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lib.foldlAttrs (
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# [ Modules ], String, { ${instance_name} :: ServiceConfig }
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acc: moduleName: serviceConfigs:
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acc
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# Collect service config
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++ (lib.foldlAttrs (
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# [ Modules ], String, ServiceConfig
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acc2: instanceName: serviceConfig:
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let
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resolvedRoles = builtins.mapAttrs (
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_roleName: members: resolveTags inventory members
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) serviceConfig.roles;
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isInService = builtins.any (members: builtins.elem machineName members.machines) (
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builtins.attrValues resolvedRoles
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);
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# Inverse map of roles. Allows for easy lookup of roles for a given machine.
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# { ${machine_name} :: [roles]
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inverseRoles = lib.foldlAttrs (
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acc: roleName:
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{ machines }:
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acc
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// builtins.foldl' (
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acc2: machineName: acc2 // { ${machineName} = (acc.${machineName} or [ ]) ++ [ roleName ]; }
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) { } machines
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) { } resolvedRoles;
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machineServiceConfig = (serviceConfig.machines.${machineName} or { }).config or { };
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globalConfig = serviceConfig.config;
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# TODO: maybe optimize this dont lookup the role in inverse roles. Imports are not lazy
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roleModules = builtins.map (
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role:
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let
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path = "${clan-core.clanModules.${moduleName}}/roles/${role}.nix";
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in
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if builtins.pathExists path then
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path
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else
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throw "Role doesnt have a module: ${role}. Path: ${path} not found."
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) inverseRoles.${machineName} or [ ];
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in
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if isInService then
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acc2
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++ [
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{
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imports = [ clan-core.clanModules.${moduleName} ] ++ roleModules;
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config.clan.${moduleName} = lib.mkMerge [
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globalConfig
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machineServiceConfig
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];
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}
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{
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config.clan.services.${moduleName}.${instanceName} = {
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roles = resolvedRoles;
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# inherit inverseRoles;
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};
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}
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]
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else
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acc2
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) [ ] serviceConfigs)
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) [ ] inventory.services
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) inventory.machines;
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in
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{
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inherit clan-core;
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# Extension of the build clan interface
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new_clan = clan-core.lib.buildClan {
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# High level services.
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# If you need multiple instances of a service configure them via:
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# inventory.services.[serviceName].[instanceName] = ...
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services = {
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borbackup = {
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roles.server.machines = [ "vyr" ];
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roles.client.tags = [ "laptop" ];
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machines.vyr = {
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config = {
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};
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};
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config = {
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};
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};
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};
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# Low level inventory i.e. if you need multiple instances of a service
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# Or if you want to manipulate the created inventory directly.
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inventory.services.borbackup.default = { };
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# Machines. each machine can be referenced by its attribute name under services.
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machines = {
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camina = {
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# This is added to machine tags
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clan.tags = [ "laptop" ];
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# These are the inventory machine fields
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clan.meta.description = "";
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clan.meta.name = "";
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clan.meta.icon = "";
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# Config ...
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};
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vyr = {
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# Config ...
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};
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vi = {
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clan.networking.targetHost = "root@78.47.164.46";
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# Config ...
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};
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aya = {
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clan.networking.targetHost = "root@78.47.164.46";
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# Config ...
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};
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ezra = {
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# Config ...
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};
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rianon = {
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# Config ...
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};
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};
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};
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clan = clan-core.lib.buildClan {
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meta.name = "vi's clans";
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# Should usually point to the directory of flake.nix
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directory = self;
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machines = {
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"vi_machine" = {
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imports = machines.vi_machine;
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};
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"vyr_machine" = {
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imports = machines.vyr_machine;
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};
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"camina_machine" = {
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imports = machines.camina_machine;
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};
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};
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};
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intern = machines;
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}
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