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// SPDX-FileCopyrightText: 2020 Serokell <https://serokell.io/>
//
// SPDX-License-Identifier: MPL-2.0
use log::{debug, info};
use std::collections::HashMap;
use std::path::Path;
use std::process::Stdio;
use thiserror::Error;
use tokio::process::Command;
#[derive(Error, Debug)]
pub enum PushProfileError {
#[error("Failed to run Nix show-derivation command: {0}")]
ShowDerivation(std::io::Error),
#[error("Nix show-derivation command resulted in a bad exit code: {0:?}")]
ShowDerivationExit(Option<i32>),
#[error("Nix show-derivation command output contained an invalid UTF-8 sequence: {0}")]
ShowDerivationUtf8(std::str::Utf8Error),
#[error("Failed to parse the output of nix show-derivation: {0}")]
ShowDerivationParse(serde_json::Error),
#[error("Nix show-derivation output is empty")]
ShowDerivationEmpty,
#[error("Failed to run Nix build command: {0}")]
Build(std::io::Error),
#[error("Nix build command resulted in a bad exit code: {0:?}")]
BuildExit(Option<i32>),
#[error(
"Activation script deploy-rs-activate does not exist in profile.\n\
Did you forget to use deploy-rs#lib.<...>.activate.<...> on your profile path?"
)]
DeployRsActivateDoesntExist,
#[error("Activation script activate-rs does not exist in profile.\n\
Is there a mismatch in deploy-rs used in the flake you're deploying and deploy-rs command you're running?")]
ActivateRsDoesntExist,
#[error("Failed to run Nix sign command: {0}")]
Sign(std::io::Error),
#[error("Nix sign command resulted in a bad exit code: {0:?}")]
SignExit(Option<i32>),
#[error("Failed to run Nix copy command: {0}")]
Copy(std::io::Error),
#[error("Nix copy command resulted in a bad exit code: {0:?}")]
CopyExit(Option<i32>),
}
pub struct PushProfileData<'a> {
pub supports_flakes: bool,
pub check_sigs: bool,
pub repo: &'a str,
pub deploy_data: &'a super::DeployData<'a>,
pub deploy_defs: &'a super::DeployDefs,
pub keep_result: bool,
pub result_path: Option<&'a str>,
pub extra_build_args: &'a [String],
}
pub async fn push_profile(data: PushProfileData<'_>) -> Result<(), PushProfileError> {
debug!(
"Finding the deriver of store path for {}",
&data.deploy_data.profile.profile_settings.path
);
// `nix-store --query --deriver` doesn't work on invalid paths, so we parse output of show-derivation :(
let mut show_derivation_command = Command::new("nix");
show_derivation_command
.arg("show-derivation")
.arg(&data.deploy_data.profile.profile_settings.path);
let show_derivation_output = show_derivation_command
.output()
.await
.map_err(PushProfileError::ShowDerivation)?;
match show_derivation_output.status.code() {
Some(0) => (),
a => return Err(PushProfileError::ShowDerivationExit(a)),
};
let derivation_info: HashMap<&str, serde_json::value::Value> = serde_json::from_str(
std::str::from_utf8(&show_derivation_output.stdout)
.map_err(PushProfileError::ShowDerivationUtf8)?,
)
.map_err(PushProfileError::ShowDerivationParse)?;
let derivation_name = derivation_info
.keys()
.next()
.ok_or(PushProfileError::ShowDerivationEmpty)?;
info!(
"Building profile `{}` for node `{}`",
data.deploy_data.profile_name, data.deploy_data.node_name
);
let mut build_command = if data.supports_flakes {
Command::new("nix")
} else {
Command::new("nix-build")
};
if data.supports_flakes {
build_command.arg("build").arg(derivation_name)
} else {
build_command.arg(derivation_name)
};
match (data.keep_result, data.supports_flakes) {
(true, _) => {
let result_path = data.result_path.unwrap_or("./.deploy-gc");
build_command.arg("--out-link").arg(format!(
"{}/{}/{}",
result_path, data.deploy_data.node_name, data.deploy_data.profile_name
))
}
(false, false) => build_command.arg("--no-out-link"),
(false, true) => build_command.arg("--no-link"),
};
for extra_arg in data.extra_build_args {
build_command.arg(extra_arg);
}
let build_exit_status = build_command
// Logging should be in stderr, this just stops the store path from printing for no reason
.stdout(Stdio::null())
.status()
.await
.map_err(PushProfileError::Build)?;
match build_exit_status.code() {
Some(0) => (),
a => return Err(PushProfileError::BuildExit(a)),
};
if !Path::new(
format!(
"{}/deploy-rs-activate",
data.deploy_data.profile.profile_settings.path
)
.as_str(),
)
.exists()
{
return Err(PushProfileError::DeployRsActivateDoesntExist);
}
if !Path::new(
format!(
"{}/activate-rs",
data.deploy_data.profile.profile_settings.path
)
.as_str(),
)
.exists()
{
return Err(PushProfileError::ActivateRsDoesntExist);
}
if let Ok(local_key) = std::env::var("LOCAL_KEY") {
info!(
"Signing key present! Signing profile `{}` for node `{}`",
data.deploy_data.profile_name, data.deploy_data.node_name
);
let sign_exit_status = Command::new("nix")
.arg("sign-paths")
.arg("-r")
.arg("-k")
.arg(local_key)
.arg(&data.deploy_data.profile.profile_settings.path)
.status()
.await
.map_err(PushProfileError::Sign)?;
match sign_exit_status.code() {
Some(0) => (),
a => return Err(PushProfileError::SignExit(a)),
};
}
info!(
"Copying profile `{}` to node `{}`",
data.deploy_data.profile_name, data.deploy_data.node_name
);
let mut copy_command = Command::new("nix");
copy_command.arg("copy");
if data.deploy_data.merged_settings.fast_connection != Some(true) {
copy_command.arg("--substitute-on-destination");
}
if !data.check_sigs {
copy_command.arg("--no-check-sigs");
}
let ssh_opts_str = data
.deploy_data
.merged_settings
.ssh_opts
// This should provide some extra safety, but it also breaks for some reason, oh well
// .iter()
// .map(|x| format!("'{}'", x))
// .collect::<Vec<String>>()
.join(" ");
let hostname = match data.deploy_data.cmd_overrides.hostname {
Some(ref x) => x,
None => &data.deploy_data.node.node_settings.hostname,
};
let copy_exit_status = copy_command
.arg("--to")
.arg(format!("ssh://{}@{}", data.deploy_defs.ssh_user, hostname))
.arg(&data.deploy_data.profile.profile_settings.path)
.env("NIX_SSHOPTS", ssh_opts_str)
.status()
.await
.map_err(PushProfileError::Copy)?;
match copy_exit_status.code() {
Some(0) => (),
a => return Err(PushProfileError::CopyExit(a)),
};
Ok(())
}
|
