Merge torrust#897: Configuration overhaul: version 2 for the configuration toml file (breaking changes)

06ad5da feat!: [torrust#878] remove enabled fields in config (Jose Celano)
50bef25 feat: remove ambiguous log entry (Jose Celano)
c5cc9fd feat: [torrust#878] extract tsl_config in toml config (Jose Celano)
7b2f757 feat!: [torrust#878] extract tracker_policy section in core config section (Jose Celano)
fc046e0 feat!: [torrust#878] extract announce_policy section in core config section (Jose Celano)
edc706c feat!: [torrust#878] extract net section in core config section (Jose Celano)
2f94f6c feat!: [torrust#878] extract database section in core config section (Jose Celano)
77dd938 feat!: [torrust#878] make log_level config value mandatory (Jose Celano)
ef9461a feat!: [torrust#878] extract logging and core section in toml config files (Jose Celano)

Pull request description:

  Configuration overhaul: version 2 for the configuration TOML file (breaking changes).

  See the [issue](torrust#878) for a full description of changes.

  ### Subtasks

  - [x] make `log_level` mandatory with default `info` value.
  - [x] extract `logging` and `core` sections.
  - [x] extract `database` subsection in `core` section.
  - [x] extract `net` subsection in `core` section.
  - [x] extract `announce_policy` subsection in `core` section.
  - [x] extract `tracker_policy` subsection in `core` section.
  - [x] extract `tsl_config` subsection for `http_trackers` and `http_api`.
  - [x] remove `enabled` field from services. If the configuration is present, the service is enabled.

ACKs for top commit:
  josecelano:
    ACK 06ad5da

Tree-SHA512: 406a848a6a8dc70d6aef19702823db8304bdddd869b045ac303520962f04918b06de4d8247e409f65869a2aafcef79217b64e4c05c305073e3403e0a824f2f7f

Author: josecelano

Cargo.toml

@@ -37,7 +37,7 @@ axum = { version = "0", features = ["macros"] }
 axum-client-ip = "0"
 axum-extra = { version = "0", features = ["query"] }
 axum-server = { version = "0", features = ["tls-rustls"] }
-camino = { version = "1.1.6", features = ["serde"] }
+camino = { version = "1.1.6", features = ["serde", "serde1"] }
 chrono = { version = "0", default-features = false, features = ["clock"] }
 clap = { version = "4", features = ["derive", "env"] }
 crossbeam-skiplist = "0.1"

Containerfile

@@ -96,15 +96,15 @@ RUN ["/busybox/cp", "-sp", "/busybox/sh","/busybox/cat","/busybox/ls","/busybox/
 COPY --from=gcc --chmod=0555 /usr/local/bin/su-exec /bin/su-exec
 
 ARG TORRUST_TRACKER_CONFIG_TOML_PATH="/etc/torrust/tracker/tracker.toml"
-ARG TORRUST_TRACKER_CONFIG_OVERRIDE_DB_DRIVER="Sqlite3"
+ARG TORRUST_TRACKER_CONFIG_OVERRIDE_CORE__DATABASE__DRIVER="Sqlite3"
 ARG USER_ID=1000
 ARG UDP_PORT=6969
 ARG HTTP_PORT=7070
 ARG API_PORT=1212
 ARG HEALTH_CHECK_API_PORT=1313
 
 ENV TORRUST_TRACKER_CONFIG_TOML_PATH=${TORRUST_TRACKER_CONFIG_TOML_PATH}
-ENV TORRUST_TRACKER_CONFIG_OVERRIDE_DB_DRIVER=${TORRUST_TRACKER_CONFIG_OVERRIDE_DB_DRIVER}
+ENV TORRUST_TRACKER_CONFIG_OVERRIDE_CORE__DATABASE__DRIVER=${TORRUST_TRACKER_CONFIG_OVERRIDE_CORE__DATABASE__DRIVER}
 ENV USER_ID=${USER_ID}
 ENV UDP_PORT=${UDP_PORT}
 ENV HTTP_PORT=${HTTP_PORT}

compose.yaml

@@ -4,7 +4,7 @@ services:
     image: torrust-tracker:release
     tty: true
     environment:
-      - TORRUST_TRACKER_CONFIG_OVERRIDE_DB_DRIVER=${TORRUST_TRACKER_CONFIG_OVERRIDE_DB_DRIVER:-MySQL}
+      - TORRUST_TRACKER_CONFIG_OVERRIDE_CORE__DATABASE__DRIVER=${TORRUST_TRACKER_CONFIG_OVERRIDE_CORE__DATABASE__DRIVER:-MySQL}
       - TORRUST_TRACKER_CONFIG_OVERRIDE_HTTP_API__ACCESS_TOKENS__ADMIN=${TORRUST_TRACKER_CONFIG_OVERRIDE_HTTP_API__ACCESS_TOKENS__ADMIN:-MyAccessToken}
     networks:
       - server_side

docs/benchmarking.md

@@ -29,10 +29,11 @@ cargo build --release -p aquatic_udp_load_test
 Run the tracker with UDP service enabled and other services disabled and set log level to `error`.
 
 ```toml
+[logging]
 log_level = "error"
 
 [[udp_trackers]]
-enabled = true
+bind_address = "0.0.0.0:6969"
 ```
 
 Build and run the tracker:
@@ -163,10 +164,11 @@ Announce responses per info hash:
 Run the tracker with UDP service enabled and other services disabled and set log level to `error`.
 
 ```toml
+[logging]
 log_level = "error"
 
 [[udp_trackers]]
-enabled = true
+bind_address = "0.0.0.0:6969"
 ```
 
 ```console

docs/containers.md

@@ -149,7 +149,7 @@ The following environmental variables can be set:
 
 - `TORRUST_TRACKER_CONFIG_TOML_PATH` - The in-container path to the tracker configuration file, (default: `"/etc/torrust/tracker/tracker.toml"`).
 - `TORRUST_TRACKER_CONFIG_OVERRIDE_HTTP_API__ACCESS_TOKENS__ADMIN` - Override of the admin token. If set, this value overrides any value set in the config.
-- `TORRUST_TRACKER_CONFIG_OVERRIDE_DB_DRIVER` - The database type used for the container, (options: `Sqlite3`, `MySQL`, default `Sqlite3`). Please Note: This dose not override the database configuration within the `.toml` config file.
+- `TORRUST_TRACKER_CONFIG_OVERRIDE_CORE__DATABASE__DRIVER` - The database type used for the container, (options: `Sqlite3`, `MySQL`, default `Sqlite3`). Please Note: This dose not override the database configuration within the `.toml` config file.
 - `TORRUST_TRACKER_CONFIG_TOML` - Load config from this environmental variable instead from a file, (i.e: `TORRUST_TRACKER_CONFIG_TOML=$(cat tracker-tracker.toml)`).
 - `USER_ID` - The user id for the runtime crated `torrust` user. Please Note: This user id should match the ownership of the host-mapped volumes, (default `1000`).
 - `UDP_PORT` - The port for the UDP tracker. This should match the port used in the configuration, (default `6969`).
@@ -243,8 +243,9 @@ podman run -it \
 The docker-compose configuration includes the MySQL service configuration. If you want to use MySQL instead of SQLite you should verify the `/etc/torrust/tracker/tracker.toml` (i.e `./storage/tracker/etc/tracker.toml`) configuration:
 
 ```toml
-db_driver = "MySQL"
-db_path = "mysql://db_user:db_user_secret_password@mysql:3306/torrust_tracker"
+[core.database]
+driver = "MySQL"
+path = "mysql://db_user:db_user_secret_password@mysql:3306/torrust_tracker"
 ```
 
 ### Build and Run:
@@ -329,24 +330,23 @@ The storage folder must contain your certificates:
 
 ```s
 storage/tracker/lib/tls
-    ├── localhost.crt
-    └── localhost.key
+                    ├── localhost.crt
+                    └── localhost.key
+storage/http_api/lib/tls
+                     ├── localhost.crt
+                     └── localhost.key
 ```
 
 You have not enabled it in your `tracker.toml` file:
 
 ```toml
+[http_trackers.tsl_config]
+ssl_cert_path = "./storage/tracker/lib/tls/localhost.crt"
+ssl_key_path = "./storage/tracker/lib/tls/localhost.key"
 
-[[http_trackers]]
-# ...
-ssl_enabled = true
-# ...
-
-[http_api]
-# ...
-ssl_enabled = true
-# ...
-
+[http_api.tsl_config]
+ssl_cert_path = "./storage/http_api/lib/tls/localhost.crt"
+ssl_key_path = "./storage/http_api/lib/tls/localhost.key"
 ```
 
 > NOTE: you can enable it independently for each HTTP tracker or the API.

packages/configuration/Cargo.toml

@@ -15,7 +15,7 @@ rust-version.workspace = true
 version.workspace = true
 
 [dependencies]
-camino = { version = "1.1.6", features = ["serde"] }
+camino = { version = "1.1.6", features = ["serde", "serde1"] }
 derive_more = "0"
 figment = { version = "0.10.18", features = ["env", "test", "toml"] }
 serde = { version = "1", features = ["derive"] }

packages/configuration/src/lib.rs

@@ -13,7 +13,7 @@ use std::sync::Arc;
 use camino::Utf8PathBuf;
 use derive_more::Constructor;
 use serde::{Deserialize, Serialize};
-use serde_with::{serde_as, NoneAsEmptyString};
+use serde_with::serde_as;
 use thiserror::Error;
 use torrust_tracker_located_error::{DynError, LocatedError};
 
@@ -37,11 +37,51 @@ pub type HealthCheckApi = v1::health_check_api::HealthCheckApi;
 
 pub type AccessTokens = HashMap<String, String>;
 
-#[derive(Copy, Clone, Debug, PartialEq, Constructor)]
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone, Constructor)]
 pub struct TrackerPolicy {
-    pub remove_peerless_torrents: bool,
+    // Cleanup job configuration
+    /// Maximum time in seconds that a peer can be inactive before being
+    /// considered an inactive peer. If a peer is inactive for more than this
+    /// time, it will be removed from the torrent peer list.
+    #[serde(default = "TrackerPolicy::default_max_peer_timeout")]
     pub max_peer_timeout: u32,
+
+    /// If enabled the tracker will persist the number of completed downloads.
+    /// That's how many times a torrent has been downloaded completely.
+    #[serde(default = "TrackerPolicy::default_persistent_torrent_completed_stat")]
     pub persistent_torrent_completed_stat: bool,
+
+    /// If enabled, the tracker will remove torrents that have no peers.
+    /// The clean up torrent job runs every `inactive_peer_cleanup_interval`
+    /// seconds and it removes inactive peers. Eventually, the peer list of a
+    /// torrent could be empty and the torrent will be removed if this option is
+    /// enabled.
+    #[serde(default = "TrackerPolicy::default_remove_peerless_torrents")]
+    pub remove_peerless_torrents: bool,
+}
+
+impl Default for TrackerPolicy {
+    fn default() -> Self {
+        Self {
+            max_peer_timeout: Self::default_max_peer_timeout(),
+            persistent_torrent_completed_stat: Self::default_persistent_torrent_completed_stat(),
+            remove_peerless_torrents: Self::default_remove_peerless_torrents(),
+        }
+    }
+}
+
+impl TrackerPolicy {
+    fn default_max_peer_timeout() -> u32 {
+        900
+    }
+
+    fn default_persistent_torrent_completed_stat() -> bool {
+        false
+    }
+
+    fn default_remove_peerless_torrents() -> bool {
+        true
+    }
 }
 
 /// Information required for loading config
@@ -86,7 +126,7 @@ impl Info {
 }
 
 /// Announce policy
-#[derive(PartialEq, Eq, Debug, Clone, Copy, Constructor)]
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone, Copy, Constructor)]
 pub struct AnnouncePolicy {
     /// Interval in seconds that the client should wait between sending regular
     /// announce requests to the tracker.
@@ -99,6 +139,7 @@ pub struct AnnouncePolicy {
     /// client's initial request. It serves as a guideline for clients to know
     /// how often they should contact the tracker for updates on the peer list,
     /// while ensuring that the tracker is not overwhelmed with requests.
+    #[serde(default = "AnnouncePolicy::default_interval")]
     pub interval: u32,
 
     /// Minimum announce interval. Clients must not reannounce more frequently
@@ -112,6 +153,7 @@ pub struct AnnouncePolicy {
     /// value to prevent sending too many requests in a short period, which
     /// could lead to excessive load on the tracker or even getting banned by
     /// the tracker for not adhering to the rules.
+    #[serde(default = "AnnouncePolicy::default_interval_min")]
     pub interval_min: u32,
 }
 
@@ -173,24 +215,23 @@ impl From<figment::Error> for Error {
 #[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone, Default)]
 pub struct TslConfig {
     /// Path to the SSL certificate file.
-    #[serde_as(as = "NoneAsEmptyString")]
     #[serde(default = "TslConfig::default_ssl_cert_path")]
-    pub ssl_cert_path: Option<Utf8PathBuf>,
+    pub ssl_cert_path: Utf8PathBuf,
+
     /// Path to the SSL key file.
-    #[serde_as(as = "NoneAsEmptyString")]
     #[serde(default = "TslConfig::default_ssl_key_path")]
-    pub ssl_key_path: Option<Utf8PathBuf>,
+    pub ssl_key_path: Utf8PathBuf,
 }
 
 impl TslConfig {
     #[allow(clippy::unnecessary_wraps)]
-    fn default_ssl_cert_path() -> Option<Utf8PathBuf> {
-        Some(Utf8PathBuf::new())
+    fn default_ssl_cert_path() -> Utf8PathBuf {
+        Utf8PathBuf::new()
     }
 
     #[allow(clippy::unnecessary_wraps)]
-    fn default_ssl_key_path() -> Option<Utf8PathBuf> {
-        Some(Utf8PathBuf::new())
+    fn default_ssl_key_path() -> Utf8PathBuf {
+        Utf8PathBuf::new()
     }
 }