Function edit_ostree

crates/lib/src/cli.rs:1561–1614

(
    opts: EditOpts,
    storage: &Storage,
    booted_ostree: &BootedOstree<'_>,
)

/// Implementation of the `bootc edit` CLI command for ostree backend.
#[context("Editing spec (ostree)")]
async fn edit_ostree(
    opts: EditOpts,
    storage: &Storage,
    booted_ostree: &BootedOstree<'_>,
) -> Result<()> {
    let repo = &booted_ostree.repo();
    let (_, host) = crate::status::get_status(booted_ostree)?;

    let new_host: Host = if let Some(filename) = opts.filename {
        let mut r = std::io::BufReader::new(std::fs::File::open(filename)?);
        serde_yaml::from_reader(&mut r)?
    } else {
        let tmpf = tempfile::NamedTempFile::with_suffix(".yaml")?;
        serde_yaml::to_writer(std::io::BufWriter::new(tmpf.as_file()), &host)?;
        crate::utils::spawn_editor(&tmpf)?;
        tmpf.as_file().seek(std::io::SeekFrom::Start(0))?;
        serde_yaml::from_reader(&mut tmpf.as_file())?
    };

    if new_host.spec == host.spec {
        println!("Edit cancelled, no changes made.");
        return Ok(());
    }
    host.spec.verify_transition(&new_host.spec)?;
    let new_spec = RequiredHostSpec::from_spec(&new_host.spec)?;

    let prog = ProgressWriter::default();

    // We only support two state transitions right now; switching the image,
    // or flipping the bootloader ordering.
    if host.spec.boot_order != new_host.spec.boot_order {
        return crate::deploy::rollback(storage).await;
    }

    let fetched = crate::deploy::pull(
        repo,
        new_spec.image,
        None,
        opts.quiet,
        prog.clone(),
        Some(&booted_ostree.deployment),
    )
    .await?;

    // TODO gc old layers here

    let stateroot = booted_ostree.stateroot();
    let from = MergeState::from_stateroot(storage, &stateroot)?;
    crate::deploy::stage(storage, from, &fetched, &new_spec, prog.clone(), false).await?;

    storage.update_mtime()?;

    Ok(())
}

/// Implementation of the `bootc edit` CLI command.
#[context("Editing spec")]