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// SPDX-FileCopyrightText: 2020 Serokell <https://serokell.io/>
//
// SPDX-License-Identifier: MPL-2.0
use std::borrow::Cow;
use std::path::PathBuf;
use merge::Merge;
#[macro_export]
macro_rules! good_panic {
($($tts:tt)*) => {{
error!($($tts)*);
std::process::exit(1);
}}
}
pub mod data;
pub mod deploy;
pub mod push;
pub struct CmdOverrides {
pub ssh_user: Option<String>,
pub profile_user: Option<String>,
pub ssh_opts: Option<String>,
pub fast_connection: Option<bool>,
pub auto_rollback: Option<bool>,
pub hostname: Option<String>,
}
#[derive(PartialEq, Debug)]
pub struct DeployFlake<'a> {
pub repo: &'a str,
pub node: Option<&'a str>,
pub profile: Option<&'a str>,
}
pub fn parse_flake(flake: &str) -> DeployFlake {
let flake_fragment_start = flake.find('#');
let (repo, maybe_fragment) = match flake_fragment_start {
Some(s) => (&flake[..s], Some(&flake[s + 1..])),
None => (flake, None),
};
let (node, profile) = match maybe_fragment {
Some(fragment) => {
let fragment_profile_start = fragment.find('.');
match fragment_profile_start {
Some(s) => (Some(&fragment[..s]), Some(&fragment[s + 1..])),
None => (Some(fragment), None),
}
}
None => (None, None),
};
DeployFlake {
repo,
node,
profile,
}
}
#[test]
fn test_parse_flake() {
assert_eq!(
parse_flake("../deploy/examples/system#example"),
DeployFlake {
repo: "../deploy/examples/system",
node: Some("example"),
profile: None
}
);
assert_eq!(
parse_flake("../deploy/examples/system#example.system"),
DeployFlake {
repo: "../deploy/examples/system",
node: Some("example"),
profile: Some("system")
}
);
assert_eq!(
parse_flake("../deploy/examples/system"),
DeployFlake {
repo: "../deploy/examples/system",
node: None,
profile: None,
}
);
}
pub struct DeployData<'a> {
pub node_name: &'a str,
pub node: &'a data::Node,
pub profile_name: &'a str,
pub profile: &'a data::Profile,
pub cmd_overrides: &'a CmdOverrides,
pub merged_settings: data::GenericSettings,
}
pub struct DeployDefs<'a> {
pub ssh_user: Cow<'a, str>,
pub profile_user: Cow<'a, str>,
pub profile_path: Cow<'a, str>,
pub current_exe: PathBuf,
pub sudo: Option<String>,
}
impl<'a> DeployData<'a> {
pub fn defs(&'a self) -> DeployDefs<'a> {
let ssh_user: Cow<str> = match self.merged_settings.ssh_user {
Some(ref u) => u.into(),
None => whoami::username().into(),
};
let profile_user: Cow<str> = match self.merged_settings.user {
Some(ref x) => x.into(),
None => match self.merged_settings.ssh_user {
Some(ref x) => x.into(),
None => good_panic!(
"Neither user nor sshUser set for profile `{}` of node `{}`",
self.profile_name,
self.node_name
),
},
};
let profile_path: Cow<str> = match self.profile.profile_settings.profile_path {
None => match &profile_user[..] {
"root" => format!("/nix/var/nix/profiles/{}", self.profile_name).into(),
_ => format!(
"/nix/var/nix/profiles/per-user/{}/{}",
profile_user, self.profile_name
)
.into(),
},
Some(ref x) => x.into(),
};
let sudo: Option<String> = match self.merged_settings.user {
Some(ref user) if user != &ssh_user => Some(format!("sudo -u {}", user)),
_ => None,
};
let current_exe =
std::env::current_exe().expect("Expected to find current executable path");
if !current_exe.starts_with("/nix/store/") {
good_panic!("The deploy binary must be in the Nix store");
}
DeployDefs {
ssh_user,
profile_user,
profile_path,
current_exe,
sudo,
}
}
}
pub fn make_deploy_data<'a, 's>(
top_settings: &'s data::GenericSettings,
node: &'a data::Node,
node_name: &'a str,
profile: &'a data::Profile,
profile_name: &'a str,
cmd_overrides: &'a CmdOverrides,
) -> Result<DeployData<'a>, Box<dyn std::error::Error>> {
let mut merged_settings = top_settings.clone();
merged_settings.merge(node.generic_settings.clone());
merged_settings.merge(profile.generic_settings.clone());
if cmd_overrides.ssh_user.is_some() {
merged_settings.ssh_user = cmd_overrides.ssh_user.clone();
}
if cmd_overrides.profile_user.is_some() {
merged_settings.user = cmd_overrides.profile_user.clone();
}
if let Some(ref ssh_opts) = cmd_overrides.ssh_opts {
merged_settings.ssh_opts = ssh_opts.split(' ').map(|x| x.to_owned()).collect();
}
if let Some(fast_connection) = cmd_overrides.fast_connection {
merged_settings.fast_connection = fast_connection;
}
if let Some(auto_rollback) = cmd_overrides.auto_rollback {
merged_settings.auto_rollback = auto_rollback;
}
Ok(DeployData {
profile,
profile_name,
node,
node_name,
cmd_overrides,
merged_settings,
})
}
pub fn deploy_path_to_activate_path_str(
deploy_path: &std::path::Path,
) -> Result<String, Box<dyn std::error::Error>> {
Ok(format!(
"{}/activate",
deploy_path
.parent()
.ok_or("Deploy path too short")?
.to_str()
.ok_or("Deploy path is not valid utf8")?
.to_owned()
))
}
#[test]
fn test_activate_path_generation() {
match deploy_path_to_activate_path_str(&std::path::PathBuf::from(
"/blah/blah/deploy-rs/bin/deploy",
)) {
Err(_) => panic!(""),
Ok(x) => assert_eq!(x, "/blah/blah/deploy-rs/bin/activate".to_string()),
}
}
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