Deployment and lifecycle management for Nix
agent: use activator
+15
-38
+7
-37
apps/sower_agent/lib/sower_agent/seed.ex
+7
-37
apps/sower_agent/lib/sower_agent/seed.ex
···
3
3
4
4
require Logger
5
5
6
-
def activate(%Seed{seed_type: "home-manager"} = seed) do
6
+
def run_activator(args) when is_list(args) do
7
7
if Application.get_env(:sower_agent, :enable_activation, true) do
8
-
case System.cmd("#{seed.artifact}/activate", [],
8
+
case System.cmd(System.find_executable("sower-activator"), args,
9
9
into: [],
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10
lines: 1024,
11
11
stderr_to_stdout: true
···
23
23
end
24
24
end
25
25
26
-
def activate(%Seed{seed_type: "nixos"} = seed) do
27
-
if Application.get_env(:sower_agent, :enable_activation, true) do
28
-
{_, 0} =
29
-
maybe_sudo_cmd(
30
-
"nix-env",
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-
[
32
-
"--set",
33
-
"--profile",
34
-
Nix.NixOS.profile_path(),
35
-
seed.artifact
36
-
]
37
-
)
38
-
39
-
case maybe_sudo_cmd("#{seed.artifact}/bin/switch-to-configuration", ["switch"],
40
-
into: [],
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-
lines: 1024,
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-
stderr_to_stdout: true
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-
) do
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-
{output, 0} ->
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-
Logger.debug(output: output)
46
-
{:ok, output}
47
-
48
-
{output, code} ->
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-
Logger.error(msg: "Failed to activate", output: output, return_code: code)
50
-
{:error, code}
51
-
end
52
-
else
53
-
{:ok, ["noop"]}
54
-
end
26
+
def activate(%Seed{seed_type: "home-manager"} = seed) do
27
+
run_activator(["-path", seed.artifact, "-type", "home-manager"])
55
28
end
56
29
57
-
defp maybe_sudo_cmd(command, args, opts \\ []) do
58
-
if Application.get_env(:sower_agent, :sudo, false) do
59
-
System.cmd("sudo", [command | args], opts)
60
-
else
61
-
System.cmd(command, args, opts)
62
-
end
30
+
def activate(%Seed{seed_type: "nixos"} = seed) do
31
+
mode = "switch"
32
+
run_activator(["-path", seed.artifact, "-type", "nixos", "-mode", mode])
63
33
end
64
34
end
+8
-1
nix/nixos/agent.nix
+8
-1
nix/nixos/agent.nix
···
35
35
};
36
36
37
37
package = lib.mkOption { type = lib.types.package; };
38
+
activatorPackage = lib.mkOption { type = lib.types.package; };
38
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settings = lib.mkOption {
40
41
type = lib.types.submodule {
···
68
69
"network-online.target"
69
70
]
70
71
++ lib.optionals config.services.sower.server.enable [ "sower.service" ];
71
-
path = [ config.nix.package ];
72
+
path = [
73
+
config.nix.package
74
+
cfg.activatorPackage
75
+
];
72
76
73
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environment = {
74
78
SHELL = lib.getExe pkgs.bash;
···
102
106
exec ${lib.getExe cfg.package} start
103
107
'';
104
108
ExecStop = "${lib.getExe cfg.package} stop";
109
+
110
+
MemoryAccounting = true;
111
+
MemoryMax = "200M";
105
112
};
106
113
};
107
114