Function compute_summary_status 

pub fn compute_summary_status(nodes: &[NodeDetails]) -> &'static str

Compute a summary status from a list of node details.

Priority order: FAILED > OFF > ON > STANDBY > UNCONFIGURED > OK. The first matching condition wins, regardless of how many nodes fall under lower-priority states.

Examples

One failed node makes the whole cluster "FAILED", even if every other node is on and configured:

use manta_shared::shared::cluster_status::compute_summary_status;
use manta_shared::shared::dto::NodeDetails;

fn n(power: &str, config: &str) -> NodeDetails {
  NodeDetails {
    xname: String::new(), nid: String::new(), hsm: String::new(),
    power_status: power.into(),
    desired_configuration: String::new(),
    configuration_status: config.into(),
    enabled: String::new(), error_count: String::new(),
    boot_image_id: String::new(), boot_configuration: String::new(),
    kernel_params: String::new(),
  }
}

assert_eq!(
  compute_summary_status(&[
    n("ON", "failed"),
    n("ON", "configured"),
  ]),
  "FAILED",
);
assert_eq!(
  compute_summary_status(&[n("ON", "configured"), n("OFF", "configured")]),
  "OFF",
);
assert_eq!(compute_summary_status(&[]), "OK");