Module config 

Configuration file support for CeleRS CLI.

This module provides configuration management for the CeleRS CLI tool, including:

• TOML file parsing and validation
• Environment variable expansion
• Configuration profiles (dev, staging, prod)
• Broker and worker settings
• Auto-scaling and alerting configuration

Configuration File Format

The configuration file uses TOML format and supports the following sections:

• [broker]: Broker connection settings (Redis, PostgreSQL, etc.)
• [worker]: Worker runtime settings (concurrency, retries, timeouts)
• [autoscale]: Auto-scaling configuration
• [alerts]: Alert and notification settings

Environment Variables

Configuration values can reference environment variables using the syntax:

• ${VAR_NAME} - Required environment variable
• ${VAR_NAME:default} - Optional with default value

Examples

[broker]
type = "redis"
url = "${REDIS_URL:redis://localhost:6379}"
queue = "my_queue"

[worker]
concurrency = 4
max_retries = 3

Usage

use celers_cli::config::Config;
use std::path::PathBuf;

// Load from file
let config = Config::from_file(PathBuf::from("celers.toml"))?;

// Get default configuration
let default_config = Config::default_config();

// Save to file
default_config.to_file("celers.toml")?;

Structs

AlertConfig

Alert configuration

AutoScaleConfig

Auto-scaling configuration

BrokerConfig

Broker configuration

Config

Main CLI configuration structure.

WorkerConfig

Worker configuration