feat: update dependencies and refactor command line argument handling for yanpm-agent

apps/agent/Cargo.toml

@@ -11,5 +11,5 @@ tracing-subscriber = { version = "0.3.20", features = ["smallvec", "fmt", "ansi"
 serde_json = { version = "1.0.145", features = ["std"] }
 serde = { version = "1.0.228", features = ["std", "derive"] }
 tokio-cron-scheduler = { version = "0.15.1", features = ["signal"] }
-clap = { version = "4", features = ["derive"] }
+clap = { version = "4", features = ["derive", "env"] }
 nix = { version = "0.30.1", features = ["user", "fs"] }

apps/agent/src/commands/validate.rs

@@ -1,4 +1,4 @@
-use tracing::{error, info, warn};
+use tracing::{info, warn};
 
 use crate::commands::{run::run_cmd, write_config::INTERNAL_CONFIG_FOLDER_NAME};
 use std::path::PathBuf;

apps/agent/src/main.rs

@@ -5,7 +5,7 @@ mod routes;
 
 use axum::routing::get;
 use axum::{Router, routing::post};
-use clap::{Arg, Command};
+use clap::{Parser, command};
 use std::os::unix::fs::PermissionsExt;
 use std::path::PathBuf;
 use std::sync::Arc;
@@ -15,10 +15,6 @@ use tracing::{error, info, warn};
 use crate::commands::NginxService;
 use crate::routes::{status, validate, validate_and_reload, write_config};
 
-const SOCK_ARG: &str = "sock";
-const NGINX_CONFIG_DIR_ARG: &str = "nginx_config_dir";
-const SOCK_PERM_ARG: &str = "sock_perm";
-const SOCK_GID_ARG: &str = "sock_gid";
 const SOCK_ENV: &str = "YANPM_AGENT_SOCK";
 const SOCK_PERM_ENV: &str = "YANPM_AGENT_SOCK_PERM";
 const NGINX_CONFIG_DIR_ENV: &str = "YANPM_NGINX_CONFIG_DIR";
@@ -28,6 +24,27 @@ const NGINX_CONFIG_DIR_DEFAULT: &str = "/etc/nginx/conf.d";
 const SOCK_PERM_DEFAULT: &str = "660";
 const SOCK_GID_DEFAULT: &str = "";
 
+/// Command line arguments
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// Unix socket path to bind the agent daemon to
+    #[arg(short = 's', long, default_value_t = String::from(SOCK_DEFAULT), env = SOCK_ENV)]
+    sock: String,
+
+    /// Directory where generated nginx config files will be written
+    #[arg(short = 'd', long, default_value_t = String::from(NGINX_CONFIG_DIR_DEFAULT), env = NGINX_CONFIG_DIR_ENV)]
+    nginx_config_dir: String,
+
+    /// Permissions to set on the unix socket (in octal), e.g. 660
+    #[arg(long, default_value_t = String::from(SOCK_PERM_DEFAULT), env = SOCK_PERM_ENV)]
+    sock_perm: String,
+
+    /// GID to set on the unix socket, default: current user's primary group
+    #[arg(long, default_value_t = String::from(SOCK_GID_DEFAULT), env = SOCK_GID_ENV)]
+    sock_gid: String,
+}
+
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     let subscriber = tracing_subscriber::fmt()
@@ -40,39 +57,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     tracing::subscriber::set_global_default(subscriber)
         .expect("Failed to set global default subscriber");
 
-    let args = Command::new("yanpm-agent")
-        .arg(
-            Arg::new(SOCK_ARG)
-                .short('s')
-                .long("sock")
-                .value_name("SOCK_PATH")
-                .help("Unix socket path to bind the agent daemon to")
-                .required(false),
-        )
-        .arg(
-            Arg::new(NGINX_CONFIG_DIR_ARG)
-                .short('d')
-                .long("nginx-config-dir")
-                .value_name("NGINX_CONFIG_DIR")
-                .help("Directory where generated nginx config files will be written")
-                .required(false),
-        )
-        .arg(
-            Arg::new(SOCK_PERM_ARG)
-                .long("sock-perm")
-                .value_name("SOCK_PERM")
-                .help("Permissions to set on the unix socket (in octal), e.g. 660")
-                .required(false),
-        )
-        .arg(
-            Arg::new(SOCK_GID_ARG)
-                .long("sock-gid")
-                .value_name("SOCK_GID")
-                .help("GID to set on the unix socket, default: current user's primary group")
-                .required(false),
-        )
-        .about("YANPM Agent Daemon")
-        .get_matches();
+    let args = Args::parse();
 
     let (sock, nginx_config_dir, sock_perm, sock_gid) = get_args(&args).await?;
 
@@ -175,32 +160,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
 }
 
 async fn get_args(
-    args: &clap::ArgMatches,
+    args: &Args,
 ) -> Result<(String, String, u32, String), Box<dyn std::error::Error + Send + Sync>> {
-    let sock = args
-        .get_one::<String>(SOCK_ARG)
-        .cloned()
-        .unwrap_or_else(|| std::env::var(SOCK_ENV).unwrap_or_else(|_| SOCK_DEFAULT.to_string()));
-    let nginx_config_dir = args
-        .get_one::<String>(NGINX_CONFIG_DIR_ARG)
-        .cloned()
-        .unwrap_or_else(|| {
-            std::env::var(NGINX_CONFIG_DIR_ENV)
-                .unwrap_or_else(|_| NGINX_CONFIG_DIR_DEFAULT.to_string())
-        });
-    let sock_perm = args
-        .get_one::<String>(SOCK_PERM_ARG)
-        .cloned()
-        .unwrap_or_else(|| {
-            std::env::var(SOCK_PERM_ENV).unwrap_or_else(|_| SOCK_PERM_DEFAULT.to_string())
-        });
-
-    let sock_gid = args
-        .get_one::<String>(SOCK_GID_ARG)
-        .cloned()
-        .unwrap_or_else(|| {
-            std::env::var(SOCK_GID_ENV).unwrap_or_else(|_| SOCK_GID_DEFAULT.to_string())
-        });
+    let sock = args.sock.clone();
+    let nginx_config_dir = args.nginx_config_dir.clone();
+    let sock_perm = args.sock_perm.clone();
+    let sock_gid = args.sock_gid.clone();
 
     if sock_perm.len() != 3 || !sock_perm.chars().all(|c| ('0'..='7').contains(&c)) {
         return Err(std::io::Error::new(