Function init_subscriber 

pub fn init_subscriber(config: LoggingConfig)

Initialize logging with the provided configuration

This function takes a LoggingConfig and sets up the global logging infrastructure. After calling this, all logging macros (tracing::info!, etc.) will use this configuration.

This is the single source of truth for subscriber initialization. All other init functions delegate to this to eliminate duplication.

Automatically configures ANSI codes:

• File output: ANSI codes disabled (clean text for parsing)
• Stderr output: ANSI codes enabled (colored terminal output)

Note: We cannot extract the format-specific layer creation into a separate function because each format (Pretty, Json, Compact) creates a different concrete type, and Rust’s type system requires all match arms to return the same type. Type erasure with boxed layers would work but adds runtime overhead for a one-time initialization cost.

Arguments

• config - The logging configuration containing all settings

Panics

Panics if:

• Log directory cannot be created (filesystem permissions issue)
• Subscriber initialization fails (usually means it was already initialized)

Both panics are intentional as logging is critical for observability.

Example

use std::path::PathBuf;
use torrust_tracker_deployer_lib::bootstrap::logging::{LogFormat, LogOutput, LoggingConfig, init_subscriber};

let config = LoggingConfig::new(
    PathBuf::from("./data/logs"),
    LogFormat::Compact,
    LogFormat::Pretty,
    LogOutput::FileAndStderr,
);

init_subscriber(config);