From 10dcab636583a65e58a979016683b2fae7a9a62f Mon Sep 17 00:00:00 2001 From: Vincent Ambo Date: Fri, 20 Oct 2017 12:06:17 +0200 Subject: feat: Add command to list and inspect queues --- .gitignore | 4 ++ Cargo.lock | 176 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 8 +++ src/main.rs | 64 ++++++++++++++++++++++ 4 files changed, 252 insertions(+) create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 src/main.rs diff --git a/.gitignore b/.gitignore new file mode 100644 index 000000000000..5bd19a47c3b3 --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +/target/ +**/*.rs.bk +.idea/ +*.iml diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 000000000000..54a0009e24eb --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,176 @@ +[root] +name = "mq" +version = "0.1.0" +dependencies = [ + "clap 2.26.2 (registry+https://github.com/rust-lang/crates.io-index)", + "posix_mq 0.1.1 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"2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc" diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 000000000000..73d087f69b97 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,8 @@ +[package] +name = "mq" +version = "0.1.0" +authors = ["Vincent Ambo "] + +[dependencies] +posix_mq = "0.1.1" +clap = "2.26.2" diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 000000000000..8cc30424a060 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,64 @@ +extern crate clap; +extern crate posix_mq; + +use 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!(), + } +} -- cgit 1.4.1