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feat(inventory/instances): add extendSettings as argument to perInstance, perMachine

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This commit is contained in:
Johannes Kirschbauer
2025-04-08 13:09:51 +02:00
parent a8e73f0260
commit 5db084e011
2 changed files with 28 additions and 35 deletions
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23
lib/inventory/distributed-service/service-module.nix
View File

@@ -132,6 +132,11 @@ let
in
makeModuleExtensible (f args);
# Extend evalModules result by a module, returns .config.
extendEval =
eval: m:
(eval.extendModules { modules = lib.toList m; } ).config;
/**
Apply the settings to the instance
@@ -147,19 +152,19 @@ let
# TODO: evaluate the settings against the interface
# settings = (evalMachineSettings { inherit roleName instanceName; inherit (v) settings; }).config;
settings = (
makeExtensibleConfig evalMachineSettings {
evalMachineSettings {
inherit roleName instanceName machineName;
inherit (v) settings;
}
);
).config;
}) role.machines;
# TODO: evaluate the settings against the interface
settings = (
makeExtensibleConfig evalMachineSettings {
evalMachineSettings {
inherit roleName instanceName;
inherit (role) settings;
}
);
).config;
}) instance.roles;
in
{
@@ -328,7 +333,14 @@ in
roles = lib.attrNames (lib.filterAttrs (_n: v: v.machines ? ${machineName}) roles);
};
settings = (
makeExtensibleConfig evalMachineSettings {
evalMachineSettings {
inherit roleName instanceName machineName;
settings =
config.instances.${instanceName}.roles.${roleName}.machines.${machineName}.settings or { };
}
).config;
extendSettings = extendEval (
evalMachineSettings {
inherit roleName instanceName machineName;
settings =
config.instances.${instanceName}.roles.${roleName}.machines.${machineName}.settings or { };
@@ -396,6 +408,7 @@ in
in
uniqueStrings (collectRoles machineScope.instances);
};
# TODO: instances.<instanceName>.roles should contain all roles, even if nobody has the role
inherit (machineScope) instances;
# There are no machine settings.

38
lib/inventory/distributed-service/tests/per_instance_args.nix
View File

@@ -23,16 +23,17 @@ let
{
instanceName,
settings,
extendSettings,
machine,
roles,
...
}:
let
settings1 = settings {
finalSettings = extendSettings {
# Sometimes we want to create a default settings set depending on the machine config.
# Note: Other machines cannot depend on this settings. We must assign a new name to the settings.
# And thus the new value is not accessible by other machines.
timeout = lib.mkOverride 10 "config.blah";
timeout = lib.mkOverride 10 "config.thing";
};
in
{
@@ -46,12 +47,7 @@ let
# We are double vendoring the settings
# To test that we can do it indefinitely
vendoredSettings = settings1 {
# Sometimes we want to create a default settings set depending on the machine config.
# Note: Other machines cannot depend on this settings. We must assign a new name to the settings.
# And thus the new value is not accessible by other machines.
timeout = lib.mkOverride 5 "config.thing";
};
vendoredSettings = finalSettings;
};
};
};
@@ -92,18 +88,6 @@ let
roles.peer.tags.all = { };
};
};
filterInternals = lib.filterAttrs (n: _v: !lib.hasPrefix "_" n);
# Replace internal attributes ('_' prefix)
# So we catch their presence but don't check the value
mapInternalsRecursive = lib.mapAttrsRecursive (
path: v:
let
name = lib.last path;
in
if !lib.hasPrefix "_" name then v else name
);
in
{
# settings should evaluate
@@ -117,10 +101,12 @@ in
# instance = instance_foo
# roles = peer
# machines = jon
settings = filterInternals res.importedModulesEvaluated.self-A.config.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.nixosModule.settings;
settings =
res.importedModulesEvaluated.self-A.config.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.nixosModule.settings;
machine =
res.importedModulesEvaluated.self-A.config.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.nixosModule.machine;
roles = mapInternalsRecursive res.importedModulesEvaluated.self-A.config.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.nixosModule.roles;
roles =
res.importedModulesEvaluated.self-A.config.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.nixosModule.roles;
};
expected = {
instanceName = "instance_foo";
@@ -139,25 +125,21 @@ in
machines = {
jon = {
settings = {
__functor = "__functor";
};
};
};
settings = {
__functor = "__functor";
};
};
peer = {
machines = {
jon = {
settings = {
__functor = "__functor";
timeout = "foo-peer-jon";
};
};
};
settings = {
__functor = "__functor";
timeout = "foo-peer";
};
};
@@ -167,11 +149,9 @@ in
test_per_instance_settings_vendoring = {
expr =
mapInternalsRecursive
res.importedModulesEvaluated.self-A.config.result.allRoles.peer.allInstances."instance_foo".allMachines.jon.nixosModule.vendoredSettings;
expected = {
# Returns another override
__functor = "__functor";
timeout = "config.thing";
};
};