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use std::io;
use std::path::Path;
use super::{lxc, Location, Snapshot};
/// An LXD ephemeral container
pub struct Container {
name: String
}
impl Container {
/// Create a new LXD container
///
/// # Arguments
///
/// * `location` - The location of the host
/// * `name` - The name of the container
/// * `base` - The base distribution to use, `ubuntu:16.04` for example
///
/// # Return
///
/// The newly created LXD container
///
/// # Errors
///
/// Errors that are encountered while creating container will be returned
///
/// # Example
///
/// ```
/// use lxd::{Container, Location};
///
/// let mut container = Container::new(Location::Local, "test-new", "ubuntu:16.04").unwrap();
/// ```
pub fn new(location: Location, name: &str, base: &str) -> io::Result<Self> {
let full_name = match location {
Location::Local => name.to_string(),
Location::Remote(remote) => format!("{}:{}", remote, name)
};
lxc(&["launch", base, &full_name, "-e", "-n", "lxdbr0"])?;
Ok(Container {
name: full_name
})
}
/// Create a new privileged LXD container
///
/// # Arguments
///
/// * `location` - The location of the host
/// * `name` - The name of the container
/// * `base` - The base distribution to use, `ubuntu:16.04` for example
///
/// # Return
///
/// The newly created LXD container
///
/// # Errors
///
/// Errors that are encountered while creating container will be returned
///
/// # Example
///
/// ```
/// use lxd::{Container, Location};
///
/// let mut container = unsafe { Container::new_privileged(Location::Local, "test-new-privileged", "ubuntu:16.04").unwrap() };
/// ```
pub unsafe fn new_privileged(location: Location, name: &str, base: &str) -> io::Result<Self> {
let full_name = match location {
Location::Local => name.to_string(),
Location::Remote(remote) => format!("{}:{}", remote, name)
};
lxc(&["launch", base, &full_name, "-e", "-n", "lxdbr0",
"-c", "security.privileged=true",
"-c", "raw.lxc=lxc.apparmor.profile=unconfined"])?;
Ok(Container {
name: full_name
})
}
/// Get full name of container
pub fn name(&self) -> &str {
&self.name
}
/// Create a snapshot of a container
///
/// # Arguments
///
/// * `name` - name of the new snapshot
///
/// # Return
///
/// A new snapshot on success
///
/// # Errors
///
/// Errors that are encountered while creating snapshot will be returned
///
/// # Example
///
/// ```
/// use lxd::{Container, Location, Snapshot};
///
/// let container = Container::new(Location::Local, "test-snapshot", "ubuntu:16.04").unwrap();
/// container.snapshot("test-snapshot").unwrap();
/// ```
pub fn snapshot<'a>(&'a self, name: &str) -> io::Result<Snapshot<'a>> {
Snapshot::new(self, name)
}
/// Run a command in an LXD container
///
/// # Arguments
///
/// * `command` - An array of command arguments
///
/// # Return
///
/// An empty tuple on success
///
/// # Errors
///
/// Errors that are encountered while executing will be returned
///
/// # Example
///
/// ```
/// use lxd::{Container, Location};
///
/// let mut container = Container::new(Location::Local, "test-exec", "ubuntu:16.04").unwrap();
/// container.exec(&["echo", "hello"]).unwrap();
/// ```
pub fn exec(&mut self, command: &[&str]) -> io::Result<()> {
let mut args = vec!["exec", &self.name, "--"];
for arg in command.as_ref().iter() {
args.push(arg.as_ref());
}
lxc(&args)
}
/// Mount a path in an LXD container
///
/// # Arguments
///
/// * `name` - The name of the mount
/// * `source` - The source path to mount
/// * `dest` - The destination of the mount
///
/// # Return
///
/// An empty tuple on success
///
/// # Errors
///
/// Errors that are encountered while mounting will be returned
///
/// # Example
///
/// ```
/// use lxd::{Container, Location};
///
/// let mut container = Container::new(Location::Local, "test-mount", "ubuntu:16.04").unwrap();
/// container.mount("source", ".", "/root/source").unwrap();
/// ```
pub fn mount<P: AsRef<Path>>(&mut self, name: &str, source: P, dest: &str) -> io::Result<()> {
lxc(&["config", "device", "add", &self.name, name, "disk", &format!("source={}", source.as_ref().display()), &format!("path={}", dest)])
}
/// Push a file to the LXD container
///
/// # Arguments
///
/// * `source` - The source of the file in the host
/// * `dest` - The destination of the file in the container
/// * `recursive` - The source is a directory
///
/// # Return
///
/// An empty tuple on success
///
/// # Errors
///
/// Errors that are encountered while pushing will be returned
///
/// # Example
///
/// ```
/// extern crate lxd;
/// extern crate tempdir;
///
/// use lxd::{Container, Location};
/// use tempdir::TempDir;
///
/// fn main() {
/// let mut container = Container::new(Location::Local, "test-push", "ubuntu:16.04").unwrap();
/// let tmp = TempDir::new("").unwrap();
/// container.push(tmp.path(), "/root", true).unwrap();
/// }
/// ```
pub fn push<P: AsRef<Path>>(&mut self, source: P, dest: &str, recursive: bool) -> io::Result<()> {
if recursive {
lxc(&[
"file",
"push",
"--quiet",
"--recursive",
&format!("{}", source.as_ref().display()),
&format!("{}/{}", self.name, dest)
])
} else {
lxc(&[
"file",
"push",
"--quiet",
&format!("{}", source.as_ref().display()),
&format!("{}/{}", self.name, dest)
])
}
}
/// Pull a file from the LXD container
///
/// # Arguments
///
/// * `source` - The source of the file in the container
/// * `dest` - The destination of the file in the host
/// * `recursive` - The source is a directory
///
/// # Return
///
/// An empty tuple on success
///
/// # Errors
///
/// Errors that are encountered while pulling will be returned
///
/// # Example
///
/// ```
/// extern crate lxd;
/// extern crate tempdir;
///
/// use lxd::{Container, Location};
/// use tempdir::TempDir;
///
/// fn main() {
/// let mut container = Container::new(Location::Local, "test-pull", "ubuntu:16.04").unwrap();
/// container.exec(&["mkdir", "artifacts"]).unwrap();
/// let tmp = TempDir::new("").unwrap();
/// container.pull("/root/artifacts", tmp.path(), true).unwrap();
/// }
/// ```
pub fn pull<P: AsRef<Path>>(&mut self, source: &str, dest: P, recursive: bool) -> io::Result<()> {
if recursive {
lxc(&[
"file",
"pull",
"--quiet",
"--recursive",
&format!("{}/{}", self.name, source),
&format!("{}", dest.as_ref().display())
])
} else {
lxc(&[
"file",
"pull",
"--quiet",
&format!("{}/{}", self.name, source),
&format!("{}", dest.as_ref().display())
])
}
}
}
impl Drop for Container {
fn drop(&mut self) {
let _ = lxc(&["stop", &self.name]);
}
}