Files
clan-core/lib/inventory/default.nix

51 lines
1.5 KiB
Nix

{ lib, clanLib }:
let
services = clanLib.callLib ./distributed-service/inventory-adapter.nix { };
in
{
inherit (services) evalClanService mapInstances resolveModule;
inherit (import ./build-inventory { inherit lib clanLib; }) buildInventory;
interface = {
imports = [
./build-inventory/interface.nix
];
_module.args = { inherit clanLib; };
};
# Returns the list of machine names
# { ... } -> [ string ]
resolveTags =
{
# Available InventoryMachines :: { {name} :: { tags = [ string ]; }; }
machines,
# Requested members :: { machines, tags }
# Those will be resolved against the available machines
members,
# Not needed for resolution - only for error reporting
roleName,
instanceName,
}:
{
machines =
members.machines or [ ]
++ (builtins.foldl' (
acc: tag:
let
# For error printing
availableTags = lib.foldlAttrs (
acc: _: v:
v.tags or [ ] ++ acc
) [ ] (machines);
tagMembers = builtins.attrNames (lib.filterAttrs (_n: v: builtins.elem tag v.tags or [ ]) machines);
in
if tagMembers == [ ] then
lib.warn ''
Service instance '${instanceName}': - ${roleName} tags: no machine with tag '${tag}' found.
Available tags: ${builtins.toJSON (lib.unique availableTags)}
'' acc
else
acc ++ tagMembers
) [ ] members.tags or [ ]);
};
}