1 use config::{Config, ConfigError, Environment, File};
3 use serde::Deserialize;
9 static CONFIG_FILE_DEFAULTS: &str = "config/defaults.hjson";
10 static CONFIG_FILE: &str = "config/config.hjson";
12 #[derive(Debug, Deserialize, Clone)]
14 pub setup: Option<Setup>,
15 pub database: Database,
19 pub jwt_secret: String,
20 pub front_end_dir: String,
21 pub rate_limit: RateLimitConfig,
22 pub email: Option<EmailConfig>,
25 #[derive(Debug, Deserialize, Clone)]
27 pub admin_username: String,
28 pub admin_password: String,
29 pub admin_email: Option<String>,
30 pub site_name: String,
33 #[derive(Debug, Deserialize, Clone)]
34 pub struct RateLimitConfig {
36 pub message_per_second: i32,
38 pub post_per_second: i32,
40 pub register_per_second: i32,
43 #[derive(Debug, Deserialize, Clone)]
44 pub struct EmailConfig {
45 pub smtp_server: String,
46 pub smtp_login: Option<String>,
47 pub smtp_password: Option<String>,
48 pub smtp_from_address: String,
52 #[derive(Debug, Deserialize, Clone)]
63 static ref SETTINGS: RwLock<Settings> = RwLock::new(match Settings::init() {
65 Err(e) => panic!("{}", e),
70 /// Reads config from the files and environment.
71 /// First, defaults are loaded from CONFIG_FILE_DEFAULTS, then these values can be overwritten
72 /// from CONFIG_FILE (optional). Finally, values from the environment (with prefix LEMMY) are
73 /// added to the config.
74 fn init() -> Result<Self, ConfigError> {
75 let mut s = Config::new();
77 s.merge(File::with_name(CONFIG_FILE_DEFAULTS))?;
79 s.merge(File::with_name(CONFIG_FILE).required(false))?;
81 // Add in settings from the environment (with a prefix of LEMMY)
82 // Eg.. `LEMMY_DEBUG=1 ./target/app` would set the `debug` key
83 // Note: we need to use double underscore here, because otherwise variables containing
84 // underscore cant be set from environmnet.
85 // https://github.com/mehcode/config-rs/issues/73
86 s.merge(Environment::with_prefix("LEMMY").separator("__"))?;
91 /// Returns the config as a struct.
92 pub fn get() -> Self {
93 SETTINGS.read().unwrap().to_owned()
96 /// Returns the postgres connection url. If LEMMY_DATABASE_URL is set, that is used,
97 /// otherwise the connection url is generated from the config.
98 pub fn get_database_url(&self) -> String {
99 match env::var("LEMMY_DATABASE_URL") {
102 "postgres://{}:{}@{}:{}/{}",
104 self.database.password,
107 self.database.database
112 pub fn api_endpoint(&self) -> String {
113 format!("{}/api/v1", self.hostname)
116 pub fn read_config_file() -> Result<String, Error> {
117 Ok(fs::read_to_string(CONFIG_FILE)?)
120 pub fn save_config_file(data: &str) -> Result<String, Error> {
121 fs::write(CONFIG_FILE, data)?;
123 // Reload the new settings
124 // From https://stackoverflow.com/questions/29654927/how-do-i-assign-a-string-to-a-mutable-static-variable/47181804#47181804
125 let mut new_settings = SETTINGS.write().unwrap();
126 *new_settings = match Settings::init() {
128 Err(e) => panic!("{}", e),
131 Self::read_config_file()