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krata: restructure packages for cleanliness
This commit is contained in:
Alex Zenla
255
crates/daemon/src/reconcile/guest.rs
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255
crates/daemon/src/reconcile/guest.rs
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use std::{collections::HashMap, time::Duration};
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use anyhow::{anyhow, Result};
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use krata::v1::{
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common::{
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guest_image_spec::Image, Guest, GuestErrorInfo, GuestExitInfo, GuestNetworkState,
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GuestState, GuestStatus,
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},
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control::GuestChangedEvent,
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};
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use kratart::{launch::GuestLaunchRequest, GuestInfo, Runtime};
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use log::{error, info, trace, warn};
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use tokio::{select, sync::mpsc::Receiver, task::JoinHandle, time::sleep};
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use uuid::Uuid;
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use crate::{
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db::GuestStore,
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event::{DaemonEvent, DaemonEventContext},
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};
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pub struct GuestReconciler {
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guests: GuestStore,
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events: DaemonEventContext,
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runtime: Runtime,
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}
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impl GuestReconciler {
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pub fn new(guests: GuestStore, events: DaemonEventContext, runtime: Runtime) -> Result<Self> {
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Ok(Self {
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guests,
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events,
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runtime,
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})
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}
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pub async fn launch(self, mut notify: Receiver<Uuid>) -> Result<JoinHandle<()>> {
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Ok(tokio::task::spawn(async move {
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if let Err(error) = self.reconcile_runtime(true).await {
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error!("runtime reconciler failed: {}", error);
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}
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loop {
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select! {
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x = notify.recv() => match x {
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None => {
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break;
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},
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Some(uuid) => {
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if let Err(error) = self.reconcile(uuid).await {
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error!("failed to reconcile guest {}: {}", uuid, error);
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}
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}
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},
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_ = sleep(Duration::from_secs(5)) => {
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if let Err(error) = self.reconcile_runtime(false).await {
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error!("runtime reconciler failed: {}", error);
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}
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}
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};
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}
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}))
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}
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pub async fn reconcile_runtime(&self, initial: bool) -> Result<()> {
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trace!("reconciling runtime");
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let runtime_guests = self.runtime.list().await?;
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let stored_guests = self.guests.list().await?;
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for (uuid, mut stored_guest_entry) in stored_guests {
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let Some(ref mut stored_guest) = stored_guest_entry.guest else {
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warn!("removing unpopulated guest entry for guest {}", uuid);
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self.guests.remove(uuid).await?;
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continue;
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};
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let previous_guest = stored_guest.clone();
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let runtime_guest = runtime_guests.iter().find(|x| x.uuid == uuid);
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match runtime_guest {
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None => {
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let mut state = stored_guest.state.as_mut().cloned().unwrap_or_default();
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if state.status() == GuestStatus::Started {
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state.status = GuestStatus::Starting.into();
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}
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stored_guest.state = Some(state);
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}
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Some(runtime) => {
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let mut state = stored_guest.state.as_mut().cloned().unwrap_or_default();
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if let Some(code) = runtime.state.exit_code {
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state.status = GuestStatus::Exited.into();
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state.exit_info = Some(GuestExitInfo { code });
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} else {
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state.status = GuestStatus::Started.into();
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}
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state.network = Some(guestinfo_to_networkstate(runtime));
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stored_guest.state = Some(state);
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}
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}
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let changed = *stored_guest != previous_guest;
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if changed || initial {
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self.guests.update(uuid, stored_guest_entry).await?;
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if let Err(error) = self.reconcile(uuid).await {
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error!("failed to reconcile guest {}: {}", uuid, error);
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}
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}
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}
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Ok(())
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}
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pub async fn reconcile(&self, uuid: Uuid) -> Result<()> {
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let Some(mut entry) = self.guests.read(uuid).await? else {
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warn!(
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"notified of reconcile for guest {} but it didn't exist",
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uuid
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);
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return Ok(());
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};
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info!("reconciling guest {}", uuid);
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let Some(ref mut guest) = entry.guest else {
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return Ok(());
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};
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self.events
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.send(DaemonEvent::GuestChanged(GuestChangedEvent {
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guest: Some(guest.clone()),
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}))?;
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let result = match guest.state.as_ref().map(|x| x.status()).unwrap_or_default() {
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GuestStatus::Starting => self.start(uuid, guest).await,
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GuestStatus::Destroying | GuestStatus::Exited => self.destroy(uuid, guest).await,
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_ => Ok(false),
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};
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let changed = match result {
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Ok(changed) => changed,
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Err(error) => {
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guest.state = Some(guest.state.as_mut().cloned().unwrap_or_default());
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guest.state.as_mut().unwrap().status = GuestStatus::Failed.into();
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guest.state.as_mut().unwrap().error_info = Some(GuestErrorInfo {
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message: error.to_string(),
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});
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true
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}
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};
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info!("reconciled guest {}", uuid);
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let status = guest.state.as_ref().map(|x| x.status()).unwrap_or_default();
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let destroyed = status == GuestStatus::Destroyed || status == GuestStatus::Failed;
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if changed {
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let event = DaemonEvent::GuestChanged(GuestChangedEvent {
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guest: Some(guest.clone()),
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});
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if destroyed {
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self.guests.remove(uuid).await?;
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} else {
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self.guests.update(uuid, entry.clone()).await?;
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}
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self.events.send(event)?;
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}
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Ok(())
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}
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async fn start(&self, uuid: Uuid, guest: &mut Guest) -> Result<bool> {
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let Some(ref spec) = guest.spec else {
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return Err(anyhow!("guest spec not specified"));
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};
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let Some(ref image) = spec.image else {
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return Err(anyhow!("image spec not provided"));
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};
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let oci = match image.image {
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Some(Image::Oci(ref oci)) => oci,
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None => {
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return Err(anyhow!("oci spec not specified"));
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}
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};
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let task = spec.task.as_ref().cloned().unwrap_or_default();
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let info = self
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.runtime
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.launch(GuestLaunchRequest {
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uuid: Some(uuid),
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name: if spec.name.is_empty() {
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None
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} else {
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Some(&spec.name)
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},
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image: &oci.image,
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vcpus: spec.vcpus,
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mem: spec.mem,
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env: task
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.environment
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.iter()
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.map(|x| (x.key.clone(), x.value.clone()))
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.collect::<HashMap<_, _>>(),
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run: empty_vec_optional(task.command.clone()),
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debug: false,
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})
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.await?;
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info!("started guest {}", uuid);
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guest.state = Some(GuestState {
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status: GuestStatus::Started.into(),
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network: Some(guestinfo_to_networkstate(&info)),
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exit_info: None,
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error_info: None,
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domid: info.domid,
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});
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Ok(true)
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}
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async fn destroy(&self, uuid: Uuid, guest: &mut Guest) -> Result<bool> {
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if let Err(error) = self.runtime.destroy(uuid).await {
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trace!("failed to destroy runtime guest {}: {}", uuid, error);
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}
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info!("destroyed guest {}", uuid);
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guest.state = Some(GuestState {
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status: GuestStatus::Destroyed.into(),
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network: None,
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exit_info: None,
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error_info: None,
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domid: guest.state.as_ref().map(|x| x.domid).unwrap_or(u32::MAX),
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});
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Ok(true)
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}
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}
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fn empty_vec_optional<T>(value: Vec<T>) -> Option<Vec<T>> {
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if value.is_empty() {
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None
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} else {
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Some(value)
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}
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}
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fn guestinfo_to_networkstate(info: &GuestInfo) -> GuestNetworkState {
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GuestNetworkState {
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guest_ipv4: info.guest_ipv4.map(|x| x.to_string()).unwrap_or_default(),
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guest_ipv6: info.guest_ipv6.map(|x| x.to_string()).unwrap_or_default(),
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guest_mac: info.guest_mac.as_ref().cloned().unwrap_or_default(),
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gateway_ipv4: info.gateway_ipv4.map(|x| x.to_string()).unwrap_or_default(),
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gateway_ipv6: info.gateway_ipv6.map(|x| x.to_string()).unwrap_or_default(),
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gateway_mac: info.gateway_mac.as_ref().cloned().unwrap_or_default(),
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}
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}
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1
crates/daemon/src/reconcile/mod.rs
Normal file
1
crates/daemon/src/reconcile/mod.rs
Normal file
@ -0,0 +1 @@
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pub mod guest;
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