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use config::{Config, ConfigError, Environment, File};
use failure::Error;
use serde::Deserialize;
use std::env;
use std::fs;
use std::net::IpAddr;
static CONFIG_FILE_DEFAULTS: &str = "config/defaults.hjson";
static CONFIG_FILE: &str = "config/config.hjson";
#[derive(Debug, Deserialize)]
pub struct Settings {
pub setup: Option<Setup>,
pub database: Database,
pub hostname: String,
pub bind: IpAddr,
pub port: u16,
pub jwt_secret: String,
pub front_end_dir: String,
pub rate_limit: RateLimitConfig,
pub email: Option<EmailConfig>,
pub federation_enabled: bool,
}
#[derive(Debug, Deserialize)]
pub struct Setup {
pub admin_username: String,
pub admin_password: String,
pub admin_email: Option<String>,
pub site_name: String,
}
#[derive(Debug, Deserialize)]
pub struct RateLimitConfig {
pub message: i32,
pub message_per_second: i32,
pub post: i32,
pub post_per_second: i32,
pub register: i32,
pub register_per_second: i32,
}
#[derive(Debug, Deserialize)]
pub struct EmailConfig {
pub smtp_server: String,
pub smtp_login: Option<String>,
pub smtp_password: Option<String>,
pub smtp_from_address: String,
pub use_tls: bool,
}
#[derive(Debug, Deserialize)]
pub struct Database {
pub user: String,
pub password: String,
pub host: String,
pub port: i32,
pub database: String,
pub pool_size: u32,
}
lazy_static! {
static ref SETTINGS: Settings = {
match Settings::init() {
Ok(c) => c,
Err(e) => panic!("{}", e),
}
};
}
impl Settings {
/// Reads config from the files and environment.
/// First, defaults are loaded from CONFIG_FILE_DEFAULTS, then these values can be overwritten
/// from CONFIG_FILE (optional). Finally, values from the environment (with prefix LEMMY) are
/// added to the config.
fn init() -> Result<Self, ConfigError> {
let mut s = Config::new();
s.merge(File::with_name(CONFIG_FILE_DEFAULTS))?;
s.merge(File::with_name(CONFIG_FILE).required(false))?;
// Add in settings from the environment (with a prefix of LEMMY)
// Eg.. `LEMMY_DEBUG=1 ./target/app` would set the `debug` key
// Note: we need to use double underscore here, because otherwise variables containing
// underscore cant be set from environmnet.
// https://github.com/mehcode/config-rs/issues/73
s.merge(Environment::with_prefix("LEMMY").separator("__"))?;
s.try_into()
}
/// Returns the config as a struct.
pub fn get() -> &'static Self {
&SETTINGS
}
/// Returns the postgres connection url. If LEMMY_DATABASE_URL is set, that is used,
/// otherwise the connection url is generated from the config.
pub fn get_database_url(&self) -> String {
match env::var("LEMMY_DATABASE_URL") {
Ok(url) => url,
Err(_) => format!(
"postgres://{}:{}@{}:{}/{}",
self.database.user,
self.database.password,
self.database.host,
self.database.port,
self.database.database
),
}
}
pub fn api_endpoint(&self) -> String {
format!("{}/api/v1", self.hostname)
}
pub fn read_config_file() -> Result<String, Error> {
Ok(fs::read_to_string(CONFIG_FILE)?)
}
pub fn save_config_file(data: &str) -> Result<String, Error> {
fs::write(CONFIG_FILE, data)?;
Self::init()?;
Self::read_config_file()
}
}
|
