Prepare, configure, and manage Firecracker microVMs in seconds!
virtualization
linux
microvm
firecracker
Merge pull request #19 from tsirysndr/feat/cp-subcommand
feat: add cp command for file transfer to/from Firecracker MicroVM and refactor exec command
authored by
Tsiry Sandratraina
and committed by
GitHub
d658ec90
9f93533d
+111
-27
+1
README.md
+1
README.md
+69
crates/firecracker-up/src/cmd/cp.rs
+69
crates/firecracker-up/src/cmd/cp.rs
···
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use anyhow::Error;
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use owo_colors::OwoColorize;
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use crate::{command::run_command_with_stdout_inherit, ssh::get_private_key_path};
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pub async fn cp(from: &str, to: &str) -> Result<(), Error> {
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let pool = firecracker_state::create_connection_pool().await?;
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let vm_name = if from.contains(':') {
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from.split(':').next().unwrap_or("")
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} else if to.contains(':') {
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to.split(':').next().unwrap_or("")
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} else {
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return Err(anyhow::anyhow!(
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"Either source or destination must be in the format <vm_name>:<path>"
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));
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};
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let vm = firecracker_state::repo::virtual_machine::find(&pool, vm_name).await?;
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if vm.is_none() {
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println!("[-] MicroVM '{}' not found.", vm_name);
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std::process::exit(1);
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}
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if !firecracker_process::vm_is_running(vm_name).await? {
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println!("[-] MicroVM '{}' is not running.", vm_name);
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let start_cmd = format!("fireup start {}", vm_name);
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println!(" Start it with {}", start_cmd.cyan());
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std::process::exit(1);
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}
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let guest_ip = format!("{}.firecracker", vm_name);
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let key_path = get_private_key_path()?;
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let scp_args = if from.contains(':') {
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let remote_path = format!("root@{}:{}", guest_ip, from.splitn(2, ':').nth(1).unwrap());
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vec!["-r", remote_path.as_str(), to]
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.iter()
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.map(|s| s.to_string())
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.collect::<Vec<String>>()
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} else {
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let remote_path = format!("root@{}:{}", guest_ip, to.splitn(2, ':').nth(1).unwrap());
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vec!["-r", from, remote_path.as_str()]
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.iter()
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.map(|s| s.to_string())
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.collect::<Vec<String>>()
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};
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run_command_with_stdout_inherit(
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"scp",
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&[
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"-q",
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"-i",
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&key_path,
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"-o",
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"StrictHostKeyChecking=no",
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"-o",
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"UserKnownHostsFile=/dev/null",
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]
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.iter()
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.copied()
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.chain(scp_args.iter().map(|s| s.as_str()))
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.collect::<Vec<&str>>()
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.as_slice(),
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false,
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)?;
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Ok(())
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}
+2
-23
crates/firecracker-up/src/cmd/exec.rs
+2
-23
crates/firecracker-up/src/cmd/exec.rs
···
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use anyhow::{anyhow, Context, Error, Result};
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use anyhow::{Error, Result};
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use firecracker_state::repo;
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use owo_colors::OwoColorize;
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use std::fs;
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use crate::command::run_ssh_command;
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use crate::{command::run_ssh_command, ssh::get_private_key_path};
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pub async fn exec(name: &str, args: Vec<String>) -> Result<(), Error> {
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let pool = firecracker_state::create_connection_pool().await?;
···
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Ok(())
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}
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fn get_private_key_path() -> Result<String, Error> {
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let home_dir = dirs::home_dir().ok_or_else(|| anyhow!("Failed to get home directory"))?;
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let app_dir = format!("{}/.fireup", home_dir.display());
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let key_name = glob::glob(format!("{}/id_rsa", app_dir).as_str())
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.with_context(|| "Failed to glob ssh key files")?
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.last()
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.ok_or_else(|| anyhow!("No SSH key file found"))?
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.with_context(|| "Failed to get SSH key path")?;
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let key_name = fs::canonicalize(&key_name)
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.with_context(|| {
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format!(
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"Failed to resolve absolute path for SSH key: {}",
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key_name.display()
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)
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})?
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.display()
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.to_string();
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Ok(key_name)
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}
+16
-4
crates/firecracker-up/src/main.rs
+16
-4
crates/firecracker-up/src/main.rs
···
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use owo_colors::OwoColorize;
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use crate::cmd::{
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down::down, init::init, inspect::inspect_microvm, logs::logs, ps::list_all_instances,
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reset::reset, rm::remove, serve::serve, ssh::ssh, start::start, status::status, stop::stop,
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up::up,
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cp::cp, down::down, exec::exec, init::init, inspect::inspect_microvm, logs::logs,
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ps::list_all_instances, reset::reset, rm::remove, serve::serve, ssh::ssh, start::start,
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status::status, stop::stop, up::up,
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};
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pub mod cmd;
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pub mod command;
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pub mod config;
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pub mod date;
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pub mod ssh;
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fn cli() -> Command {
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let banner = format!(
···
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)
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.about("Execute a command inside the Firecracker MicroVM"),
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)
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.subcommand(
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Command::new("cp")
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.arg(arg!(<source> "Source file path").required(true))
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.arg(arg!(<destination> "Destination file path").required(true))
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.about("Copy files to/from the Firecracker MicroVM"),
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)
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.arg(arg!(--debian "Prepare Debian MicroVM").default_value("false"))
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.arg(arg!(--alpine "Prepare Alpine MicroVM").default_value("false"))
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.arg(arg!(--nixos "Prepare NixOS MicroVM").default_value("false"))
···
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.unwrap()
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.map(|s| s.to_string())
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.collect();
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cmd::exec::exec(&name, cmd_args).await?;
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exec(&name, cmd_args).await?;
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}
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Some(("cp", args)) => {
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let source = args.get_one::<String>("source").cloned().unwrap();
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let destination = args.get_one::<String>("destination").cloned().unwrap();
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cp(&source, &destination).await?;
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}
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_ => {
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let debian = matches.get_one::<bool>("debian").copied().unwrap_or(false);
+23
crates/firecracker-up/src/ssh.rs
+23
crates/firecracker-up/src/ssh.rs
···
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use anyhow::Error;
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use anyhow::{anyhow, Context, Result};
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use std::fs;
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pub fn get_private_key_path() -> Result<String, Error> {
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let home_dir = dirs::home_dir().ok_or_else(|| anyhow!("Failed to get home directory"))?;
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let app_dir = format!("{}/.fireup", home_dir.display());
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let key_name = glob::glob(format!("{}/id_rsa", app_dir).as_str())
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.with_context(|| "Failed to glob ssh key files")?
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.last()
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.ok_or_else(|| anyhow!("No SSH key file found"))?
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.with_context(|| "Failed to get SSH key path")?;
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let key_name = fs::canonicalize(&key_name)
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.with_context(|| {
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format!(
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"Failed to resolve absolute path for SSH key: {}",
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key_name.display()
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)
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})?
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.display()
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.to_string();
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Ok(key_name)
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}