104 lines
2.8 KiB
Rust
104 lines
2.8 KiB
Rust
extern crate lazy_static;
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use config::{Config, ConfigError, Environment, File};
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use serde::Deserialize;
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use std::env;
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use std::net::IpAddr;
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static CONFIG_FILE_DEFAULTS: &str = "config/defaults.hjson";
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static CONFIG_FILE_COSTUMIZED: &str = "config/custom.hjson";
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#[derive(Debug, Deserialize)]
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pub struct Settings {
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pub database: Database,
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pub hostname: String,
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pub bind: IpAddr,
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pub port: u16,
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pub jwt_secret: String,
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pub rate_limit: RateLimitConfig,
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pub email: Option<EmailConfig>,
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}
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#[derive(Debug, Deserialize)]
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pub struct RateLimitConfig {
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pub message: i32,
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pub message_per_second: i32,
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pub post: i32,
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pub post_per_second: i32,
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pub register: i32,
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pub register_per_second: i32,
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}
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#[derive(Debug, Deserialize)]
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pub struct EmailConfig {
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pub smtp_server: String,
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pub smtp_login: String,
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pub smtp_password: String,
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pub smtp_from_address: String,
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}
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#[derive(Debug, Deserialize)]
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pub struct Database {
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pub user: String,
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pub password: String,
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pub host: String,
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pub port: i32,
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pub database: String,
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}
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lazy_static! {
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static ref SETTINGS: Settings = {
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return match Settings::init() {
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Ok(c) => c,
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Err(e) => panic!("{}", e),
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};
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};
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}
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impl Settings {
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/// Reads config from the files and environment.
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/// First, defaults are loaded from CONFIG_FILE_DEFAULTS, then these values can be overwritten
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/// from CONFIG_FILE_COSTUMIZED (optional). Finally, values from the environment
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/// (with prefix LEMMY) are added to the config.
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fn init() -> Result<Self, ConfigError> {
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let mut s = Config::new();
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// Start off by merging in the "default" configuration file
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s.merge(File::with_name(CONFIG_FILE_DEFAULTS))?;
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// TODO: we could also automatically load dev/prod configs based on environment
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// https://github.com/mehcode/config-rs/blob/master/examples/hierarchical-env/src/settings.rs#L49
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s.merge(File::with_name(CONFIG_FILE_COSTUMIZED).required(false))?;
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// Add in settings from the environment (with a prefix of LEMMY)
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// Eg.. `LEMMY_DEBUG=1 ./target/app` would set the `debug` key
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s.merge(Environment::with_prefix("LEMMY"))?;
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return s.try_into();
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}
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/// Returns the config as a struct.
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pub fn get() -> &'static Self {
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&SETTINGS
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}
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/// Returns the postgres connection url. If LEMMY_DATABASE_URL is set, that is used,
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/// otherwise the connection url is generated from the config.
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pub fn get_database_url(&self) -> String {
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match env::var("LEMMY_DATABASE_URL") {
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Ok(url) => url,
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Err(_) => format!(
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"postgres://{}:{}@{}:{}/{}",
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self.database.user,
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self.database.password,
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self.database.host,
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self.database.port,
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self.database.database
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),
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}
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}
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pub fn api_endpoint(&self) -> String {
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format!("{}/api/v1", self.hostname)
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}
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}
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