e8388f8574
The primary use case is tools like sops-nix and agenix to restart units when secrets change. There's probably other reasons to restart units as well and a nice thing to have in general.
73 lines
2.7 KiB
Nix
73 lines
2.7 KiB
Nix
import ./make-test-python.nix ({ pkgs, ...} : {
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name = "restart-by-activation-script";
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meta = with pkgs.lib.maintainers; {
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maintainers = [ das_j ];
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};
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machine = { pkgs, ... }: {
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imports = [ ../modules/profiles/minimal.nix ];
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systemd.services.restart-me = {
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = "${pkgs.coreutils}/bin/true";
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};
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};
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systemd.services.reload-me = {
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wantedBy = [ "multi-user.target" ];
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serviceConfig = rec {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = "${pkgs.coreutils}/bin/true";
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ExecReload = ExecStart;
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};
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};
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system.activationScripts.test = {
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supportsDryActivation = true;
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text = ''
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if [ -e /test-the-activation-script ]; then
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if [ "$NIXOS_ACTION" != dry-activate ]; then
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touch /activation-was-run
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echo restart-me.service > /run/nixos/activation-restart-list
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echo reload-me.service > /run/nixos/activation-reload-list
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else
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echo restart-me.service > /run/nixos/dry-activation-restart-list
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echo reload-me.service > /run/nixos/dry-activation-reload-list
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fi
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fi
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'';
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};
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};
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testScript = /* python */ ''
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machine.wait_for_unit("multi-user.target")
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with subtest("nothing happens when the activation script does nothing"):
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out = machine.succeed("/run/current-system/bin/switch-to-configuration dry-activate 2>&1")
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assert 'restart' not in out
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assert 'reload' not in out
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out = machine.succeed("/run/current-system/bin/switch-to-configuration test")
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assert 'restart' not in out
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assert 'reload' not in out
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machine.succeed("touch /test-the-activation-script")
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with subtest("dry activation"):
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out = machine.succeed("/run/current-system/bin/switch-to-configuration dry-activate 2>&1")
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assert 'would restart the following units: restart-me.service' in out
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assert 'would reload the following units: reload-me.service' in out
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machine.fail("test -f /run/nixos/dry-activation-restart-list")
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machine.fail("test -f /run/nixos/dry-activation-reload-list")
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with subtest("real activation"):
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out = machine.succeed("/run/current-system/bin/switch-to-configuration test 2>&1")
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assert 'restarting the following units: restart-me.service' in out
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assert 'reloading the following units: reload-me.service' in out
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machine.fail("test -f /run/nixos/activation-restart-list")
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machine.fail("test -f /run/nixos/activation-reload-list")
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'';
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})
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