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use crate::{
config::YoukiConfig,
hooks,
notify_socket::{NotifySocket, NOTIFY_FILE},
};
use super::{Container, ContainerStatus};
use anyhow::{bail, Context, Result};
use nix::unistd;
impl Container {
/// Starts a previously created container
///
/// # Example
///
/// ```no_run
/// use libcontainer::container::builder::ContainerBuilder;
/// use libcontainer::syscall::syscall::create_syscall;
///
/// # fn main() -> anyhow::Result<()> {
/// let mut container = ContainerBuilder::new("74f1a4cb3801".to_owned(), create_syscall().as_ref())
/// .as_init("/var/run/docker/bundle")
/// .build()?;
///
/// container.start();
/// # Ok(())
/// # }
/// ```
pub fn start(&mut self) -> Result<()> {
self.refresh_status()
.context("failed to refresh container status")?;
if !self.can_start() {
let err_msg = format!(
"{} could not be started because it was {:?}",
self.id(),
self.status()
);
log::error!("{}", err_msg);
bail!(err_msg);
}
let config = YoukiConfig::load(&self.root)
.with_context(|| format!("failed to load runtime spec for container {}", self.id()))?;
if let Some(hooks) = config.hooks.as_ref() {
// While prestart is marked as deprecated in the OCI spec, the docker and integration test still
// uses it.
#[allow(deprecated)]
hooks::run_hooks(hooks.prestart().as_ref(), Some(self))
.with_context(|| "failed to run pre start hooks")?;
}
unistd::chdir(self.root.as_os_str())?;
let mut notify_socket = NotifySocket::new(&self.root.join(NOTIFY_FILE));
notify_socket.notify_container_start()?;
self.set_status(ContainerStatus::Running)
.save()
.with_context(|| format!("could not save state for container {}", self.id()))?;
// Run post start hooks. It runs after the container process is started.
// It is called in the runtime namespace.
if let Some(hooks) = config.hooks.as_ref() {
hooks::run_hooks(hooks.poststart().as_ref(), Some(self))
.with_context(|| "failed to run post start hooks")?;
}
Ok(())
}
}