diff options
| -rw-r--r-- | .gitignore | 4 | ||||
| -rw-r--r-- | Cargo.lock | 176 | ||||
| -rw-r--r-- | Cargo.toml | 8 | ||||
| -rw-r--r-- | src/main.rs | 64 |
4 files changed, 252 insertions, 0 deletions
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clap::{App, SubCommand, Arg, AppSettings}; +use posix_mq::{Name, Queue}; + +fn run_ls() { + use std::fs::{read_dir, File}; + use std::io::Read; + + let mqueues = read_dir("/dev/mqueue") + .expect("Could not read message queues"); + + mqueues.for_each(|queue| { + //let queue_name = (&queue.unwrap().file_name()).into_string().unwrap(); + let path = queue.unwrap().path(); + let status = { + let mut file = File::open(&path) + .expect("Could not open queue file"); + + let mut content = String::new(); + file.read_to_string(&mut content).expect("Could not read queue file"); + + content + }; + + let queue_name = path.components().last().unwrap().as_os_str(); + println!("{:?}: {}", queue_name, status) + }); +} + +fn run_inspect(queue_name: &str) { + let name = Name::new(queue_name).expect("Invalid queue name"); + let queue = Queue::open(name).expect("Could not open queue"); + + println!("Queue {}:\n", queue_name); + println!("Max. message size: {} bytes", queue.max_size()); + println!("Max. # of pending messages: {}", queue.max_pending()); +} + +fn main() { + let ls = SubCommand::with_name("ls").about("list message queues"); + let inspect = SubCommand::with_name("inspect") + .about("inspect details about a queue") + .arg(Arg::with_name("queue") + .short("q") + .required(true) + .takes_value(true)); + + + let matches = App::new("mq") + .setting(AppSettings::SubcommandRequiredElseHelp) + .version("0.0.1") + .about("Administrate and inspect POSIX message queues") + .subcommand(ls) + .subcommand(inspect) + .get_matches(); + + match matches.subcommand() { + ("ls", _) => run_ls(), + ("inspect", Some(cmd)) => run_inspect(cmd.value_of("queue").unwrap()), + _ => unimplemented!(), + } +} |