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+1,46 @@ +use std::env; +use std::process::Command; + +fn main() { + let is_production = env::var("APP_ENV") + .map(|e| e == "production") + .unwrap_or(false); + + let version = if is_production { + get_latest_tag().unwrap_or_else(|| panic!("Production builds must have a GIT tag.")) + } else { + get_commit_hash().unwrap_or_else(|| env!("CARGO_PKG_VERSION").to_string()) + }; + + println!("cargo:rustc-env=GIT_VERSION={}", version) +} + +fn get_commit_hash() -> Option { + let output = Command::new("git") + .args(&["rev-parse", "--short=8", "HEAD"]) + .output() + .ok()?; + + if !output.status.success() { + return None; + } + + String::from_utf8(output.stdout) + .ok() + .map(|s| s.trim().to_string()) +} + +fn get_latest_tag() -> Option { + let output = Command::new("git") + .args(&["describe", "--tags", "--match", "v*"]) + .output() + .ok()?; + + if !output.status.success() { + return None; + } + + String::from_utf8(output.stdout) + .ok() + .map(|s| s.trim().to_string()) +} diff --git a/src/config/mod.rs b/src/config/mod.rs new file mode 100644 index 0000000..675f783 --- /dev/null +++ b/src/config/mod.rs @@ -0,0 +1 @@ +pub mod parameter; diff --git a/src/config/parameter.rs b/src/config/parameter.rs new file mode 100644 index 0000000..a099b12 --- /dev/null +++ b/src/config/parameter.rs @@ -0,0 +1,63 @@ +use config::{Config, ConfigError, Environment, File}; +use dotenvy::dotenv; +use serde::Deserialize; +use std::env; + +#[derive(Debug, Deserialize, Clone)] +pub struct AppConfig { + pub loki_endpoint: String, + pub service_name: String, + pub service_version: String, + pub log_level: String, + pub port: u16, + pub environment: String, +} + +impl AppConfig { + pub fn new() -> Result { + let _ = dotenv().ok(); + + let environment = env::var("APP_ENV").unwrap_or_else(|_| "development".into()); + + let config = Config::builder() + // Start with default values + .set_default("environment", &*environment)? + .set_default("service_name", "OpenLayersHub")? + .set_default("service_version", env!("GIT_VERSION"))? + .set_default("log_level", "info")? + .set_default("port", 3000)? + // Add environment-specific config file + .add_source(File::with_name(&format!("config/{}", environment)).required(false)) + .add_source(File::with_name(".env").required(false)) + .add_source( + Environment::with_prefix("APP") + .prefix_separator("_") + .separator("__"), + ) + .build()?; + + config.try_deserialize() + } + + pub fn validate(&self) -> Result<(), Vec> { + let mut errors = Vec::new(); + + if self.loki_endpoint.is_empty() { + errors.push("Loki endpoint must be set".to_string()); + } + + // Validate environment value + if !["development", "staging", "production"].contains(&self.environment.as_str()) { + errors.push(format!( + "Invalid environment '{}'. Must be one of: development, staging, production", + self.environment + )); + } + + if errors.is_empty() { + Ok(()) + } else { + Err(errors) + } + } +} diff --git a/src/main.rs b/src/main.rs index e7a11a9..a4c7b1c 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,3 +1,24 @@ +use crate::config::parameter::AppConfig; + +mod config; + fn main() { - println!("Hello, world!"); + let config = AppConfig::new() + .map_err(|e| { + eprintln!("Configuration error: {}", e); + std::process::exit(1); + }) + .and_then(|cfg| { + cfg.validate().map_err(|errors| { + eprintln!( + "Configuration validation errors:\n\t{}", + errors.join("\n\t") + ); + std::process::exit(1); + })?; + Ok(cfg) + }) + .unwrap(); + + println!("Hello, world! {}", config.service_version); }