107 lines
3.8 KiB
Nix
107 lines
3.8 KiB
Nix
# Generate partial NixOS configurations for every machine in the inventory
|
|
# This function is responsible for generating the module configuration for every machine in the inventory.
|
|
{ lib, clan-core }:
|
|
inventory:
|
|
let
|
|
machines = machinesFromInventory inventory;
|
|
|
|
resolveTags =
|
|
# Inventory, { machines :: [string], tags :: [string] }
|
|
inventory: members: {
|
|
machines =
|
|
members.machines or [ ]
|
|
++ (builtins.foldl' (
|
|
acc: tag:
|
|
let
|
|
tagMembers = builtins.attrNames (
|
|
lib.filterAttrs (_n: v: builtins.elem tag v.tags or [ ]) inventory.machines
|
|
);
|
|
in
|
|
# throw "Machine tag ${tag} not found. Not machine with: tag ${tagName} not in inventory.";
|
|
if tagMembers == [ ] then
|
|
throw "Machine tag ${tag} not found. Not machine with: tag ${tag} not in inventory."
|
|
else
|
|
acc ++ tagMembers
|
|
) [ ] members.tags or [ ]);
|
|
};
|
|
|
|
/*
|
|
Returns a NixOS configuration for every machine in the inventory.
|
|
|
|
machinesFromInventory :: Inventory -> { ${machine_name} :: NixOSConfiguration }
|
|
*/
|
|
machinesFromInventory =
|
|
inventory:
|
|
# For every machine in the inventory, build a NixOS configuration
|
|
# For each machine generate config, forEach service, if the machine is used.
|
|
builtins.mapAttrs (
|
|
machineName: _:
|
|
lib.foldlAttrs (
|
|
# [ Modules ], String, { ${instance_name} :: ServiceConfig }
|
|
acc: moduleName: serviceConfigs:
|
|
acc
|
|
# Collect service config
|
|
++ (lib.foldlAttrs (
|
|
# [ Modules ], String, ServiceConfig
|
|
acc2: instanceName: serviceConfig:
|
|
let
|
|
resolvedRoles = builtins.mapAttrs (
|
|
_roleName: members: resolveTags inventory members
|
|
) serviceConfig.roles;
|
|
|
|
isInService = builtins.any (members: builtins.elem machineName members.machines) (
|
|
builtins.attrValues resolvedRoles
|
|
);
|
|
|
|
# Inverse map of roles. Allows for easy lookup of roles for a given machine.
|
|
# { ${machine_name} :: [roles]
|
|
inverseRoles = lib.foldlAttrs (
|
|
acc: roleName:
|
|
{ machines }:
|
|
acc
|
|
// builtins.foldl' (
|
|
acc2: machineName: acc2 // { ${machineName} = (acc.${machineName} or [ ]) ++ [ roleName ]; }
|
|
) { } machines
|
|
) { } resolvedRoles;
|
|
|
|
machineServiceConfig = (serviceConfig.machines.${machineName} or { }).config or { };
|
|
globalConfig = serviceConfig.config or { };
|
|
|
|
# TODO: maybe optimize this dont lookup the role in inverse roles. Imports are not lazy
|
|
roleModules = builtins.map (
|
|
role:
|
|
let
|
|
path = "${clan-core.clanModules.${moduleName}}/roles/${role}.nix";
|
|
in
|
|
if builtins.pathExists path then
|
|
path
|
|
else
|
|
throw "Role doesnt have a module: ${role}. Path: ${path} not found."
|
|
) inverseRoles.${machineName} or [ ];
|
|
in
|
|
if isInService then
|
|
acc2
|
|
++ [
|
|
{
|
|
imports = [ clan-core.clanModules.${moduleName} ] ++ roleModules;
|
|
config.clan.${moduleName} = lib.mkMerge [
|
|
globalConfig
|
|
machineServiceConfig
|
|
];
|
|
}
|
|
{
|
|
config.clan.inventory.services.${moduleName}.${instanceName} = {
|
|
roles = resolvedRoles;
|
|
# TODO: Add inverseRoles to the service config if needed
|
|
# inherit inverseRoles;
|
|
};
|
|
}
|
|
]
|
|
else
|
|
acc2
|
|
) [ ] serviceConfigs)
|
|
) [ ] inventory.services
|
|
) inventory.machines;
|
|
in
|
|
machines
|