FDS/OS 1.0

rust/fds-cartridged/src/main.rs

@@ -0,0 +1,66 @@
+mod burning;
+mod consumers;
+mod data_sessions;
+mod media;
+mod power;
+mod profiles;
+mod recovery;
+mod server;
+mod software;
+use clap::Parser;
+use fds_common::{Error, Result, topology};
+use std::{path::PathBuf, process::ExitCode};
+
+#[derive(Parser)]
+#[command(
+    version,
+    about = "Run the root cartridge service or inspect USB topology"
+)]
+struct Cli {
+    /// Notify s6 when the service is ready.
+    #[arg(long, conflicts_with = "topology")]
+    notify: bool,
+    /// Inspect topology without starting the service or mounting devices.
+    #[arg(long, value_name = "SYSFS_ROOT")]
+    topology: Option<PathBuf>,
+}
+fn run() -> Result<()> {
+    let cli = Cli::parse();
+    if let Some(sys) = cli.topology {
+        println!(
+            "{}",
+            serde_json::to_string_pretty(&topology::devices(&sys)?)
+                .map_err(|e| Error(e.to_string()))?
+        );
+        Ok(())
+    } else {
+        server::run(cli.notify)
+    }
+}
+fn main() -> ExitCode {
+    match run() {
+        Ok(()) => ExitCode::SUCCESS,
+        Err(e) => {
+            eprintln!("fds-cartridged: {e}");
+            ExitCode::FAILURE
+        }
+    }
+}
+
+#[cfg(test)]
+mod cli_tests {
+    use super::*;
+    use clap::{CommandFactory, Parser};
+    #[test]
+    fn typed_command_contract() {
+        Cli::command().debug_assert();
+        assert!(!Cli::try_parse_from(["fds-cartridged"]).unwrap().notify);
+        assert!(
+            Cli::try_parse_from(["fds-cartridged", "--notify"])
+                .unwrap()
+                .notify
+        );
+        assert!(Cli::try_parse_from(["fds-cartridged", "--topology", "/sys"]).is_ok());
+        assert!(Cli::try_parse_from(["fds-cartridged", "--notify", "--topology", "/sys"]).is_err());
+    }
+}