✨ Añade gestión de trazas y registro de eventos

- Reexporta macros esenciales de `tracing` para el registro de eventos.
- Inicializa el gestor de trazas en el servidor web.

.gitignore

@@ -1,6 +1,9 @@
 # Ignora directorios de compilación
 **/target
 
+# Archivos de log
+**/log/*.log*
+
 # Archivos de configuración locales
 **/local.*.toml
 **/local.toml

Cargo.lock

@@ -287,6 +287,12 @@ dependencies = [
  "alloc-stdlib",
 ]
 
+[[package]]
+name = "bumpalo"
+version = "3.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46c5e41b57b8bba42a04676d81cb89e9ee8e859a1a66f80a5a72e1cb76b34d43"
+
 [[package]]
 name = "bytes"
 version = "1.10.1"
@@ -369,6 +375,21 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82b8f8f868b36967f9606790d1903570de9ceaf870a7bf9fbbd3016d636a2cb2"
+dependencies = [
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -737,12 +758,28 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "js-sys"
+version = "0.3.77"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
+dependencies = [
+ "once_cell",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "language-tags"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4345964bb142484797b161f473a503a434de77149dd8c7427788c6e13379388"
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "libc"
 version = "0.2.174"
@@ -794,6 +831,15 @@ version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
 
+[[package]]
+name = "matchers"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
+dependencies = [
+ "regex-automata 0.1.10",
+]
+
 [[package]]
 name = "memchr"
 version = "2.7.5"
@@ -827,6 +873,22 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "mutually_exclusive_features"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e94e1e6445d314f972ff7395df2de295fe51b71821694f0b0e1e79c4f12c8577"
+
+[[package]]
+name = "nu-ansi-term"
+version = "0.46.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
+dependencies = [
+ "overload",
+ "winapi",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
@@ -848,9 +910,15 @@ version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
+[[package]]
+name = "overload"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
+
 [[package]]
 name = "pagetop"
-version = "0.0.2"
+version = "0.0.3"
 dependencies = [
  "actix-web",
  "colored",
@@ -860,6 +928,10 @@ dependencies = [
  "serde",
  "substring",
  "terminal_size",
+ "tracing",
+ "tracing-actix-web",
+ "tracing-appender",
+ "tracing-subscriber",
 ]
 
 [[package]]
@@ -904,6 +976,26 @@ version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
+[[package]]
+name = "pin-project"
+version = "1.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677f1add503faace112b9f1373e43e9e054bfdd22ff1a63c1bc485eaec6a6a8a"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.16"
@@ -1016,8 +1108,17 @@ checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-automata",
+ "regex-automata 0.4.9",
- "regex-syntax",
+ "regex-syntax 0.8.5",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+dependencies = [
+ "regex-syntax 0.6.29",
 ]
 
 [[package]]
@@ -1028,7 +1129,7 @@ checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax",
+ "regex-syntax 0.8.5",
 ]
 
 [[package]]
@@ -1037,6 +1138,12 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53a49587ad06b26609c52e423de037e7f57f20d53535d66e08c695f347df952a"
 
+[[package]]
+name = "regex-syntax"
+version = "0.6.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
+
 [[package]]
 name = "regex-syntax"
 version = "0.8.5"
@@ -1062,6 +1169,12 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "rustversion"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a0d197bd2c9dc6e53b84da9556a69ba4cdfab8619eb41a8bd1cc2027a0f6b1d"
+
 [[package]]
 name = "ryu"
 version = "1.0.20"
@@ -1138,6 +1251,15 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "shlex"
 version = "1.3.0"
@@ -1222,6 +1344,35 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "thread_local"
+version = "1.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "time"
 version = "0.3.41"
@@ -1339,6 +1490,31 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-actix-web"
+version = "0.7.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2340b7722695166c7fc9b3e3cd1166e7c74fedb9075b8f0c74d3822d2e41caf5"
+dependencies = [
+ "actix-web",
+ "mutually_exclusive_features",
+ "pin-project",
+ "tracing",
+ "uuid",
+]
+
+[[package]]
+name = "tracing-appender"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3566e8ce28cc0a3fe42519fc80e6b4c943cc4c8cef275620eb8dac2d3d4e06cf"
+dependencies = [
+ "crossbeam-channel",
+ "thiserror",
+ "time",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "tracing-attributes"
 version = "0.1.30"
@@ -1357,6 +1533,49 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9d12581f227e93f094d3af2ae690a574abb8a2b9b7a96e7cfe9647b2b617678"
 dependencies = [
  "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-serde"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "704b1aeb7be0d0a84fc9828cae51dab5970fee5088f83d1dd7ee6f6246fc6ff1"
+dependencies = [
+ "serde",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8189decb5ac0fa7bc8b96b7cb9b2701d60d48805aca84a238004d665fcc4008"
+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex",
+ "serde",
+ "serde_json",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
+ "tracing-serde",
 ]
 
 [[package]]
@@ -1394,6 +1613,23 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "uuid"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3cf4199d1e5d15ddd86a694e4d0dffa9c323ce759fea589f00fef9d81cc1931d"
+dependencies = [
+ "getrandom",
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "valuable"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
+
 [[package]]
 name = "version_check"
 version = "0.9.5"
@@ -1415,6 +1651,86 @@ dependencies = [
  "wit-bindgen-rt",
 ]
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
+dependencies = [
+ "bumpalo",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pagetop"
-version = "0.0.2"
+version = "0.0.3"
 edition = "2021"
 
 description = """\
@@ -22,6 +22,11 @@ serde.workspace = true
 substring = "1.4.5"
 terminal_size = "0.4.2"
 
+tracing = "0.1.41"
+tracing-appender = "0.2.3"
+tracing-subscriber = { version = "0.3.19", features = ["json", "env-filter"] }
+tracing-actix-web = "0.7.18"
+
 actix-web = "4.11.0"
 
 pagetop-macros.workspace = true

src/app.rs

@@ -2,11 +2,12 @@
 
 mod figfont;
 
-use crate::{global, service};
+use crate::{global, service, trace};
 
 use substring::Substring;
 
 use std::io::Error;
+use std::sync::LazyLock;
 
 pub struct Application;
 
@@ -15,6 +16,10 @@ impl Application {
     pub fn new() -> Self {
         // Al arrancar muestra una cabecera para la aplicación.
         Self::show_banner();
+
+        // Inicia gestión de trazas y registro de eventos (logging).
+        LazyLock::force(&trace::TRACING);
+
         Self
     }
 
@@ -62,7 +67,9 @@ impl Application {
     /// Ejecuta el servidor web de la aplicación.
     pub fn run(self) -> Result<service::Server, Error> {
         // Prepara el servidor web.
-        Ok(service::HttpServer::new(move || Self::service_app())
+        Ok(service::HttpServer::new(move || {
+            Self::service_app().wrap(tracing_actix_web::TracingLogger::default())
+        })
         .bind(format!(
             "{}:{}",
             &global::SETTINGS.server.bind_address,

src/global.rs

@@ -10,48 +10,65 @@ include_config!(SETTINGS: Settings => [
     "app.description"     => "Developed with the amazing PageTop framework.",
     "app.startup_banner"  => "Slant",
 
+    // [log]
+    "log.tracing"         => "Info",
+    "log.rolling"         => "Stdout",
+    "log.path"            => "log",
+    "log.prefix"          => "tracing.log",
+    "log.format"          => "Full",
+
     // [server]
     "server.bind_address" => "localhost",
     "server.bind_port"    => 8080,
 ]);
 
 #[derive(Debug, Deserialize)]
-/// Ajustes de configuración para las secciones globales [`[app]`](App) y [`[server]`](Server).
+/// Ajustes para las secciones globales [`[app]`](App), [`[log]`](Log) y [`[server]`](Server) de
-/// Consulta [`SETTINGS`] para los valores por defecto.
+/// [`SETTINGS`].
 pub struct Settings {
     pub app: App,
+    pub log: Log,
     pub server: Server,
 }
 
 #[derive(Debug, Deserialize)]
-/// Sección `[app]` de la configuración.
+/// Sección `[app]` de la configuración. Forma parte de [`Settings`].
-///
-/// Forma parte de [`Settings`].
 pub struct App {
     /// Nombre de la aplicación.
-    /// Valor por defecto: *"Sample"*.
     pub name: String,
     /// Breve descripción de la aplicación.
-    /// Valor por defecto: *"Developed with the amazing PageTop framework."*.
     pub description: String,
-    /// ASCII banner printed at startup: *"Off"*, *"Slant"*, *"Small"*, *"Speed"*, or *"Starwars"*.
+    /// Banner ASCII mostrado al inicio: *"Off"* (desactivado), *"Slant"*, *"Small"*, *"Speed"* o
-    /// Default: *"Slant"*.
+    /// *"Starwars"*.
     pub startup_banner: String,
-    /// Modo de ejecución.
+    /// Modo de ejecución, dado por la variable de entorno `PAGETOP_RUN_MODE`, o *"default"* si no
-    /// Valor por defecto: el definido por la variable de entorno
+    /// está definido.
-    /// `PAGETOP_RUN_MODE`, o *"default"* si no está establecida.
     pub run_mode: String,
 }
 
 #[derive(Debug, Deserialize)]
-/// Sección `[server]` de la configuración.
+/// Sección `[log]` de la configuración. Forma parte de [`Settings`].
-///
+pub struct Log {
-/// Forma parte de [`Settings`].
+    /// Opciones, o combinación de opciones separadas por comas, para filtrar las trazas: *"Error"*,
+    /// *"Warn"*, *"Info"*, *"Debug"* o *"Trace"*.
+    /// Ejemplo: "Error,actix_server::builder=Info,tracing_actix_web=Debug".
+    pub tracing: String,
+    /// Muestra los mensajes de traza en el terminal (*"Stdout"*) o las registra en archivos con
+    /// rotación: *"Daily"*, *"Hourly"*, *"Minutely"* o *"Endless"*.
+    pub rolling: String,
+    /// Directorio para los archivos de traza (si `rolling` ≠ *"Stdout"*).
+    pub path: String,
+    /// Prefijo para los archivos de traza (si `rolling` ≠ *"Stdout"*).
+    pub prefix: String,
+    /// Formato de salida de las trazas. Opciones: *"Full"*, *"Compact"*, *"Pretty"* o *"Json"*.
+    pub format: String,
+}
+
+#[derive(Debug, Deserialize)]
+/// Sección `[server]` de la configuración. Forma parte de [`Settings`].
 pub struct Server {
     /// Dirección de enlace para el servidor web.
-    /// Valor por defecto: *"localhost"*.
     pub bind_address: String,
     /// Puerto de escucha del servidor web.
-    /// Valor por defecto: *8088*.
     pub bind_port: u16,
 }

src/lib.rs

@@ -40,6 +40,8 @@ pub use pagetop_macros::{main, test};
 pub mod config;
 // Opciones de configuración globales.
 pub mod global;
+// Gestión de trazas y registro de eventos de la aplicación.
+pub mod trace;
 // Gestión del servidor y servicios web.
 pub mod service;
 // Prepara y ejecuta la aplicación.

src/prelude.rs

@@ -13,6 +13,8 @@ pub use crate::include_config;
 
 pub use crate::global;
 
+pub use crate::trace;
+
 pub use crate::service;
 
 pub use crate::app::Application;

src/trace.rs

@@ -0,0 +1,85 @@
+//! Gestión de trazas y registro de eventos de la aplicación.
+//!
+//! `PageTop` recopila información de diagnóstico de la aplicación de forma estructurada y basada en
+//! eventos.
+//!
+//! En los sistemas asíncronos, interpretar los mensajes de log tradicionales suele volverse
+//! complicado. Las tareas individuales se multiplexan en el mismo hilo y los eventos y registros
+//! asociados se entremezclan, lo que dificulta seguir la secuencia lógica.
+//!
+//! `PageTop` usa [`tracing`](https://docs.rs/tracing) para registrar eventos estructurados y con
+//! información adicional sobre la *temporalidad* y la *causalidad*. A diferencia de un mensaje de
+//! log, un *span* (intervalo) tiene un momento de inicio y de fin, puede entrar y salir del flujo
+//! de ejecución y puede existir dentro de un árbol anidado de *spans* similares. Además, estos
+//! *spans* son estructurados, con la capacidad de registrar tipos de datos y mensajes de texto.
+
+use crate::global;
+
+pub use tracing::{debug, error, info, trace, warn};
+pub use tracing::{debug_span, error_span, info_span, trace_span, warn_span};
+
+use tracing_appender::non_blocking::WorkerGuard;
+use tracing_subscriber::EnvFilter;
+
+use std::sync::LazyLock;
+
+/// Trazado y registro de eventos de la aplicación.
+///
+/// Para aumentar el rendimiento, un hilo dedicado utiliza un sistema de escritura no bloqueante que
+/// actúa de forma periódica en lugar de enviar cada traza o evento al instante. Si el programa
+/// termina abruptamente (por ejemplo, debido a un `panic!` o a una llamada a `std::process::exit`),
+/// es posible que algunas trazas o eventos no se envíen.
+///
+/// Dado que las trazas o eventos registrados poco antes de un fallo suelen ser cruciales para
+/// diagnosticar la causa, `Lazy<WorkerGuard>` garantiza que todos los registros almacenados se
+/// envíen antes de finalizar la ejecución.
+
+#[rustfmt::skip]
+pub(crate) static TRACING: LazyLock<WorkerGuard> = LazyLock::new(|| {
+    let env_filter = EnvFilter::try_new(&global::SETTINGS.log.tracing)
+        .unwrap_or_else(|_| EnvFilter::new("Info"));
+
+    let rolling = global::SETTINGS.log.rolling.to_lowercase();
+
+    let (non_blocking, guard) = match rolling.as_str() {
+        "stdout" => tracing_appender::non_blocking(std::io::stdout()),
+        _ => tracing_appender::non_blocking({
+            let path = &global::SETTINGS.log.path;
+            let prefix = &global::SETTINGS.log.prefix;
+            match rolling.as_str() {
+                "daily"    => tracing_appender::rolling::daily(path, prefix),
+                "hourly"   => tracing_appender::rolling::hourly(path, prefix),
+                "minutely" => tracing_appender::rolling::minutely(path, prefix),
+                "endless"  => tracing_appender::rolling::never(path, prefix),
+                _ => {
+                    println!(
+                        "Rolling value \"{}\" not valid. Using \"daily\". Check the settings file.",
+                        global::SETTINGS.log.rolling,
+                    );
+                    tracing_appender::rolling::daily(path, prefix)
+                }
+            }
+        }),
+    };
+
+    let subscriber = tracing_subscriber::fmt()
+        .with_env_filter(env_filter)
+        .with_writer(non_blocking)
+        .with_ansi(rolling.as_str() == "stdout");
+
+    match global::SETTINGS.log.format.to_lowercase().as_str() {
+        "json"    => subscriber.json().init(),
+        "full"    => subscriber.init(),
+        "compact" => subscriber.compact().init(),
+        "pretty"  => subscriber.pretty().init(),
+        _ => {
+            println!(
+                "Tracing format \"{}\" not valid. Using \"Full\". Check the settings file.",
+                global::SETTINGS.log.format,
+            );
+            subscriber.init();
+        }
+    }
+
+    guard
+});