refactor: [#852] enrich field types in Configuration struct

packages/configuration/src/lib.rs

@@ -171,3 +171,20 @@ pub struct TslConfig {
     #[serde_as(as = "NoneAsEmptyString")]
     pub ssl_key_path: Option<Utf8PathBuf>,
 }
+
+#[derive(Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
+#[serde(rename_all = "lowercase")]
+pub enum LogLevel {
+    /// A level lower than all log levels.
+    Off,
+    /// Corresponds to the `Error` log level.
+    Error,
+    /// Corresponds to the `Warn` log level.
+    Warn,
+    /// Corresponds to the `Info` log level.
+    Info,
+    /// Corresponds to the `Debug` log level.
+    Debug,
+    /// Corresponds to the `Trace` log level.
+    Trace,
+}

packages/configuration/src/v1/mod.rs

@@ -236,8 +236,7 @@ pub mod tracker_api;
 pub mod udp_tracker;
 
 use std::fs;
-use std::net::IpAddr;
-use std::str::FromStr;
+use std::net::{IpAddr, Ipv4Addr};
 
 use figment::providers::{Env, Format, Serialized, Toml};
 use figment::Figment;
@@ -248,15 +247,15 @@ use self::health_check_api::HealthCheckApi;
 use self::http_tracker::HttpTracker;
 use self::tracker_api::HttpApi;
 use self::udp_tracker::UdpTracker;
-use crate::{AnnouncePolicy, Error, Info};
+use crate::{AnnouncePolicy, Error, Info, LogLevel};
 
 /// Core configuration for the tracker.
 #[allow(clippy::struct_excessive_bools)]
 #[derive(Serialize, Deserialize, PartialEq, Eq, Debug)]
 pub struct Configuration {
     /// Logging level. Possible values are: `Off`, `Error`, `Warn`, `Info`,
     /// `Debug` and `Trace`. Default is `Info`.
-    pub log_level: Option<String>,
+    pub log_level: Option<LogLevel>,
     /// Tracker mode. See [`TrackerMode`] for more information.
     pub mode: TrackerMode,
 
@@ -284,7 +283,7 @@ pub struct Configuration {
     /// is using a loopback IP address, the tracker assumes that the peer is
     /// in the same network as the tracker and will use the tracker's IP
     /// address instead.
-    pub external_ip: Option<String>,
+    pub external_ip: Option<IpAddr>,
     /// Weather the tracker should collect statistics about tracker usage.
     /// If enabled, the tracker will collect statistics like the number of
     /// connections handled, the number of announce requests handled, etc.
@@ -330,15 +329,15 @@ impl Default for Configuration {
         let announce_policy = AnnouncePolicy::default();
 
         let mut configuration = Configuration {
-            log_level: Option::from(String::from("info")),
+            log_level: Some(LogLevel::Info),
             mode: TrackerMode::Public,
             db_driver: DatabaseDriver::Sqlite3,
             db_path: String::from("./storage/tracker/lib/database/sqlite3.db"),
             announce_interval: announce_policy.interval,
             min_announce_interval: announce_policy.interval_min,
             max_peer_timeout: 900,
             on_reverse_proxy: false,
-            external_ip: Some(String::from("0.0.0.0")),
+            external_ip: Some(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0))),
             tracker_usage_statistics: true,
             persistent_torrent_completed_stat: false,
             inactive_peer_cleanup_interval: 600,
@@ -363,13 +362,7 @@ impl Configuration {
     /// and `None` otherwise.
     #[must_use]
     pub fn get_ext_ip(&self) -> Option<IpAddr> {
-        match &self.external_ip {
-            None => None,
-            Some(external_ip) => match IpAddr::from_str(external_ip) {
-                Ok(external_ip) => Some(external_ip),
-                Err(_) => None,
-            },
-        }
+        self.external_ip.as_ref().map(|external_ip| *external_ip)
     }
 
     /// Saves the default configuration at the given path.
@@ -432,6 +425,8 @@ impl Configuration {
 #[cfg(test)]
 mod tests {
 
+    use std::net::{IpAddr, Ipv4Addr};
+
     use crate::v1::Configuration;
     use crate::Info;
 
@@ -495,7 +490,7 @@ mod tests {
     fn configuration_should_contain_the_external_ip() {
         let configuration = Configuration::default();
 
-        assert_eq!(configuration.external_ip, Some(String::from("0.0.0.0")));
+        assert_eq!(configuration.external_ip, Some(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0))));
     }
 
     #[test]

packages/test-helpers/src/configuration.rs

@@ -2,7 +2,7 @@
 use std::env;
 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
 
-use torrust_tracker_configuration::Configuration;
+use torrust_tracker_configuration::{Configuration, LogLevel};
 use torrust_tracker_primitives::TrackerMode;
 
 use crate::random;
@@ -28,7 +28,7 @@ pub fn ephemeral() -> Configuration {
     // For example: a test for the UDP tracker should disable the API and HTTP tracker.
 
     let mut config = Configuration {
-        log_level: Some("off".to_owned()), // Change to `debug` for tests debugging
+        log_level: Some(LogLevel::Off), // Change to `debug` for tests debugging
         ..Default::default()
     };
 
@@ -125,7 +125,7 @@ pub fn ephemeral_mode_private_whitelisted() -> Configuration {
 pub fn ephemeral_with_external_ip(ip: IpAddr) -> Configuration {
     let mut cfg = ephemeral();
 
-    cfg.external_ip = Some(ip.to_string());
+    cfg.external_ip = Some(ip);
 
     cfg
 }

src/bootstrap/logging.rs

@@ -10,11 +10,10 @@
 //! - `Trace`
 //!
 //! Refer to the [configuration crate documentation](https://docs.rs/torrust-tracker-configuration) to know how to change log settings.
-use std::str::FromStr;
 use std::sync::Once;
 
 use log::{info, LevelFilter};
-use torrust_tracker_configuration::Configuration;
+use torrust_tracker_configuration::{Configuration, LogLevel};
 
 static INIT: Once = Once::new();
 
@@ -31,10 +30,17 @@ pub fn setup(cfg: &Configuration) {
     });
 }
 
-fn config_level_or_default(log_level: &Option<String>) -> LevelFilter {
+fn config_level_or_default(log_level: &Option<LogLevel>) -> LevelFilter {
     match log_level {
         None => log::LevelFilter::Info,
-        Some(level) => LevelFilter::from_str(level).unwrap(),
+        Some(level) => match level {
+            LogLevel::Off => LevelFilter::Off,
+            LogLevel::Error => LevelFilter::Error,
+            LogLevel::Warn => LevelFilter::Warn,
+            LogLevel::Info => LevelFilter::Info,
+            LogLevel::Debug => LevelFilter::Debug,
+            LogLevel::Trace => LevelFilter::Trace,
+        },
     }
 }
 

src/servers/apis/mod.rs

@@ -130,8 +130,8 @@
 //! > **NOTICE**: You can generate a self-signed certificate for localhost using
 //! OpenSSL. See [Let's Encrypt](https://letsencrypt.org/docs/certificates-for-localhost/).
 //! That's particularly useful for testing purposes. Once you have the certificate
-//! you need to set the [`ssl_cert_path`](torrust_tracker_configuration::HttpApi::ssl_cert_path)
-//! and [`ssl_key_path`](torrust_tracker_configuration::HttpApi::ssl_key_path)
+//! you need to set the [`ssl_cert_path`](torrust_tracker_configuration::HttpApi::tsl_config.ssl_cert_path)
+//! and [`ssl_key_path`](torrust_tracker_configuration::HttpApi::tsl_config.ssl_key_path)
 //! options in the configuration file with the paths to the certificate
 //! (`localhost.crt`) and key (`localhost.key`) files.
 //!

src/servers/http/v1/services/announce.rs

@@ -145,8 +145,9 @@ mod tests {
 
         fn tracker_with_an_ipv6_external_ip(stats_event_sender: Box<dyn statistics::EventSender>) -> Tracker {
             let mut configuration = configuration::ephemeral();
-            configuration.external_ip =
-                Some(IpAddr::V6(Ipv6Addr::new(0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969)).to_string());
+            configuration.external_ip = Some(IpAddr::V6(Ipv6Addr::new(
+                0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969,
+            )));
 
             Tracker::new(&configuration, Some(stats_event_sender), statistics::Repo::new()).unwrap()
         }

src/servers/udp/handlers.rs

@@ -426,7 +426,7 @@ mod tests {
         }
 
         pub fn with_external_ip(mut self, external_ip: &str) -> Self {
-            self.configuration.external_ip = Some(external_ip.to_owned());
+            self.configuration.external_ip = Some(external_ip.to_owned().parse().expect("valid IP address"));
             self
         }