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//! The `delete` sub-command.
use crate::spec::Specification;
use log::{debug, info};
use std::thread;
use std::time::Duration;
use virt::connect::Connect;
/// Errors from this module.
#[derive(Debug, thiserror::Error)]
pub enum DeleteError {
/// Error creating virtual machine.
#[error(transparent)]
VirtError(#[from] virt::error::Error),
/// Error doing I/O.
#[error(transparent)]
IoError(#[from] std::io::Error),
}
/// Delete VMs corresponding to specifications.
///
/// Delete the VM corresponding to each specification provided by the caller.
pub fn delete(specs: &[Specification]) -> Result<(), DeleteError> {
for spec in specs {
info!("deleting virtual machine {}", spec.name);
debug!("connecting to libvirtd");
let conn = Connect::open("qemu:///system")?;
debug!("listing all domains");
let domains = conn.list_all_domains(0)?;
for domain in domains {
debug!("considering {}", domain.get_name()?);
if domain.get_name()? == spec.name {
debug!("shutdown {}", spec.name);
domain.shutdown().ok();
let briefly = Duration::from_millis(1000);
loop {
thread::sleep(briefly);
match domain.is_active() {
Ok(true) => (),
Ok(false) => break,
Err(err) => {
debug!("is_active: {}", err);
}
}
debug!("{} is still running", spec.name);
}
debug!("undefine {}", spec.name);
domain.undefine()?;
debug!("removing image file {}", spec.image.display());
std::fs::remove_file(&spec.image)?;
}
}
}
Ok(())
}
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