Rust scheduler: Add CLI

CMK-14516

v2/rust/Cargo.toml

@@ -7,3 +7,4 @@ edition = "2021"
 
 [dependencies]
 anyhow = { version = "*", features = ["backtrace"] }
+clap = { version = "*", features = ["derive"] }

v2/rust/src/cli.rs

@@ -0,0 +1,19 @@
+use clap::{ArgAction, Parser};
+use std::path::PathBuf;
+
+#[derive(Parser)]
+#[command(about = "Robotmk suite scheduler.")]
+pub struct Args {
+    /// Configuration file path.
+    #[arg(name = "CONFIG_PATH")]
+    pub config_path: PathBuf,
+
+    /// Log file path. If left unspecified, the program will log to standard error.
+    #[arg(long, name = "LOG_PATH")]
+    pub log_path: Option<PathBuf>,
+
+    /// Enable verbose output. Use once (-v) for logging level INFO and twice (-vv) for logging
+    /// level DEBUG.
+    #[arg(short, long, action = ArgAction::Count)]
+    pub verbose: u8,
+}

v2/rust/src/main.rs

@@ -1,6 +1,9 @@
 #![allow(dead_code)]
 pub mod attempt;
+mod cli;
+use clap::Parser;
 
 fn main() -> anyhow::Result<()> {
+    let _args = cli::Args::parse();
     Ok(())
 }