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use anyhow::{anyhow, bail, Ok, Result};
use async_process::{Command, Stdio};
use async_trait::async_trait;
use futures::future::try_join_all;
use itertools::Itertools;
use log::{debug, info};
use serde::Deserialize;
use std::collections::HashMap;
use url::Url;
use crate::Hydration;
use super::Provider;
#[derive(Default)]
pub struct Vault {
urls: Vec<Url>,
}
impl Vault {
pub fn new() -> Self {
Default::default()
}
}
#[derive(Deserialize)]
struct VaultGetKVData {
data: HashMap<String, String>,
}
#[derive(Deserialize)]
struct VaultGetKV {
data: VaultGetKVData,
}
#[async_trait]
impl Provider for Vault {
fn add(&mut self, value: String) -> Result<()> {
match Url::parse(&value) {
std::result::Result::Ok(url) if url.scheme() == "vault" => {
self.urls.push(url);
Ok(())
}
_ => bail!("Not an vault scheme"),
}
}
async fn resolve(&self) -> Result<Hydration> {
let fetches = self
.urls
.iter()
.into_group_map_by(|u| {
let port = match u.port() {
Some(port) => format!(":{}", port),
None => "".to_string(),
};
format!("{}{}", u.host().expect("Missing host"), port)
})
.into_iter()
.flat_map(|(host, group)| {
group
.into_iter()
.into_group_map_by(|u| u.path().split('/').nth(1).expect("Missing project"))
.into_iter()
.flat_map(|(mount, group)| {
group
.into_iter()
.into_group_map_by(|u| {
(u.path().split('/').nth(2)).expect("Missing env")
})
.into_iter()
.map(|(key, group)| {
let host = host.clone();
async move {
let cmd = [
"vault",
"kv",
"get",
#[cfg(debug_assertions)]
&format!("-address=http://{}", host),
#[cfg(not(debug_assertions))]
&format!("-address=https://{}", host),
&format!("-mount={}", mount),
"-format=json",
key,
];
info!("{}", cmd.join(" "));
let child = Command::new(cmd[0])
.args(&cmd[1..])
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.output()
.await
.expect("error running Vault");
let loaded =
serde_json::from_slice::<VaultGetKV>(&child.stdout)
.map_err(|_| {
let err = String::from_utf8_lossy(&child.stderr);
anyhow!("Vault error: {err}")
})?
.data
.data;
let hydration = group
.into_iter()
.map(|u| {
(
u.to_string(),
loaded
.get(
u.path()
.split('/')
.nth(3)
.expect("Missing variable"),
)
.expect("Variable not found")
.clone(),
)
})
.collect::<Hydration>();
debug!("hydration: {:?}", hydration);
Ok(hydration)
}
})
.collect::<Vec<_>>()
})
.collect::<Vec<_>>()
})
.collect::<Vec<_>>();
Ok(try_join_all(fetches).await?.into_iter().flatten().collect())
}
}