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|
use std::time::Duration;
use anyhow::{anyhow, Result};
use crate::config::{ConfigOpts, ConfigOptsAcme, ConfigOptsBase, ConfigOptsConsul};
// This code is inspired by the Trunk crate (https://github.com/thedodd/trunk)
// In this file, we take ConfigOpts and transform them into ready-to-use
// RuntimeConfig. We apply default values and business logic.
#[derive(Debug)]
pub struct RuntimeConfigAcme {
pub email: String,
}
#[derive(Debug)]
pub struct RuntimeConfigConsul {
pub node_name: String,
pub url: String,
}
#[derive(Debug)]
pub struct RuntimeConfigFirewall {
pub refresh_time: Duration,
}
#[derive(Debug)]
pub struct RuntimeConfigIgd {
pub private_ip: String,
pub expiration_time: Duration,
pub refresh_time: Duration,
}
#[derive(Debug)]
pub struct RuntimeConfig {
pub acme: Option<RuntimeConfigAcme>,
pub consul: RuntimeConfigConsul,
pub firewall: RuntimeConfigFirewall,
pub igd: RuntimeConfigIgd,
}
impl RuntimeConfig {
pub fn new(opts: ConfigOpts) -> Result<Self> {
let acme = RuntimeConfigAcme::new(opts.acme.clone())?;
let consul = RuntimeConfigConsul::new(opts.consul.clone())?;
let firewall = RuntimeConfigFirewall::new(opts.base.clone())?;
let igd = RuntimeConfigIgd::new(opts.base.clone())?;
Ok(Self {
acme,
consul,
firewall,
igd,
})
}
}
impl RuntimeConfigAcme {
pub fn new(opts: ConfigOptsAcme) -> Result<Option<Self>> {
if !opts.enable {
return Ok(None)
}
let email = opts.email.expect(
"'DIPLONAT_ACME_EMAIL' environment variable is required if 'DIPLONAT_ACME_ENABLE' == 'true'",
);
Ok(Some(Self { email }))
}
}
impl RuntimeConfigConsul {
pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> {
let node_name = opts
.node_name
.expect("'DIPLONAT_CONSUL_NODE_NAME' environment variable is required");
let url = opts.url.unwrap_or(super::CONSUL_URL.to_string());
Ok(Self { node_name, url })
}
}
impl RuntimeConfigFirewall {
pub(super) fn new(opts: ConfigOptsBase) -> Result<Self> {
let refresh_time = Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
Ok(Self { refresh_time })
}
}
impl RuntimeConfigIgd {
pub(super) fn new(opts: ConfigOptsBase) -> Result<Self> {
let private_ip = opts
.private_ip
.expect("'DIPLONAT_PRIVATE_IP' environment variable is required");
let expiration_time = Duration::from_secs(
opts
.expiration_time
.unwrap_or(super::EXPIRATION_TIME)
.into(),
);
let refresh_time = Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
if refresh_time.as_secs() * 2 > expiration_time.as_secs() {
return Err(anyhow!(
"IGD expiration time (currently: {}s) must be at least twice bigger than refresh time \
(currently: {}s)",
expiration_time.as_secs(),
refresh_time.as_secs()
))
}
Ok(Self {
private_ip,
expiration_time,
refresh_time,
})
}
}
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