pleme-fleet 0.1.8

NixOS fleet lifecycle CLI with DAG workflow orchestration
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

use anyhow::Result;
use std::process::Command;

use super::utils::*;
use crate::config::FleetConfig;
use crate::targeting::ResolvedTargets;

pub fn run(targets: &ResolvedTargets, config: &FleetConfig) -> Result<()> {
    let flake = flake_dir();

    for (name, node) in &targets.nodes {
        log_info(&format!("Computing diff for {}", name));

        // Build the new closure locally
        let drv = format!("{flake}#nixosConfigurations.{name}.config.system.build.toplevel");
        let new_path = run_command_output(
            Command::new("nix")
                .arg("build")
                .arg(&drv)
                .arg("--print-out-paths")
                .arg("--no-link"),
        )?;

        // Get current system path from remote
        let ssh = config.resolve_ssh(name);
        let current_path = match ssh_run_with_config(
            &node.ssh_user,
            &node.hostname,
            &ssh,
            "readlink /run/current-system",
        ) {
            Ok(path) => path,
            Err(e) => {
                log_warning(&format!(
                    "{} Failed to read current system: {}",
                    node_label(name),
                    e
                ));
                continue;
            }
        };

        // Show diff
        println!("{}", node_label(name));
        let mut cmd = Command::new("nix");
        cmd.arg("store")
            .arg("diff-closures")
            .arg(current_path.trim())
            .arg(new_path.trim());
        if let Err(e) = run_command(&mut cmd) {
            log_warning(&format!("{} diff failed: {}", node_label(name), e));
        }
        println!();
    }

    Ok(())
}