mymq 0.1.0

Broker and message queues
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142

use arbitrary::Unstructured;
use log::info;
use rand::{rngs::StdRng, seq::SliceRandom};
use structopt::StructOpt;

use std::{io, path, result};

mod arbitr;
mod dump;
mod list;
mod show;
mod start;

#[derive(Clone, StructOpt)]
pub struct Opt {
    #[structopt(long = "config")]
    config_loc: Option<path::PathBuf>,

    #[structopt(short = "v")]
    v: bool,

    #[structopt(long = "vv")]
    vv: bool,

    #[structopt(long = "log-mod", default_value = "")]
    log_mod: String,

    #[structopt(long = "force-color")]
    force_color: bool,

    #[structopt(long = "seed")]
    seed: Option<u64>,

    #[structopt(subcommand)]
    subcmd: SubCommand,
}

#[derive(Clone, StructOpt)]
pub enum SubCommand {
    Start(start::Start),
    Dump(dump::Dump),
    List(list::List),
    Arbitr(arbitr::Arbitr),
    Show(show::Show),
}

pub type Result<T> = result::Result<T, String>;

fn main() {
    let opts = parse_cmd_line();

    setup_logging(&opts);
    info!("verbosity level {:?}", opts.to_verbosity());

    let res = match &opts.subcmd {
        SubCommand::Start(_) => start::run(opts),
        SubCommand::Dump(_) => dump::run(opts),
        SubCommand::List(_) => list::run(opts),
        SubCommand::Arbitr(_) => arbitr::run(opts),
        SubCommand::Show(_) => show::run(opts),
    };

    res.map_err(|e| println!("error: {}", e)).ok();
}

fn parse_cmd_line() -> Opt {
    Opt::from_args()
}

use env_logger::{fmt::Target, Builder, WriteStyle};
use log::Level;
use std::io::Write;
fn setup_logging(opts: &Opt) {
    let verbosity = opts.to_verbosity();
    let opts = opts.clone();
    Builder::from_default_env()
        .parse_default_env()
        .target(Target::Stdout)
        .format(move |f, r| {
            let file = r.file().clone().unwrap();
            if file.len() > 0 && !file.contains(&opts.log_mod) {
                return Ok(());
            }

            let target = r.target();
            match target {
                "0" | "1" | "2" if target <= verbosity.as_str() => log_format(f, r),
                "0" | "1" | "2" => Ok(()),
                _ => log_format(f, r),
            }
        })
        .write_style(WriteStyle::Auto)
        .init();
}

use env_logger::fmt::{Color, Formatter};
fn log_format(f: &mut Formatter, r: &log::Record<'_>) -> io::Result<()> {
    let mut level_style = f.style();
    match r.level() {
        Level::Error => level_style.set_color(Color::Red).set_bold(false),
        Level::Warn => level_style.set_color(Color::Yellow).set_bold(false),
        Level::Info => level_style.set_color(Color::Blue).set_bold(false),
        Level::Debug => level_style.set_color(Color::Magenta).set_bold(false),
        Level::Trace => level_style.set_color(Color::Cyan).set_bold(false),
    };
    let mut mod_style = f.style();
    mod_style.set_color(Color::Green).set_bold(false);
    let file = {
        let file = path::Path::new(r.file().clone().unwrap()).file_stem().unwrap();
        file.to_str().unwrap()
    };
    let loc = mod_style.value(format!("{}:{}", file, r.line().unwrap()));
    writeln!(
        f,
        "{} [{:5}] [{:>13}] {}",
        chrono::Local::now().format("%Y-%m-%dT%H:%M:%S%.3f%Z"),
        level_style.value(r.level()),
        loc,
        r.args()
    )
}

impl Opt {
    fn to_verbosity(&self) -> String {
        if self.v {
            "1"
        } else if self.vv {
            "2"
        } else {
            "0"
        }
        .to_string()
    }
}

pub fn new_unstructured<'a>(
    rng: &mut StdRng,
    bytes: &'a mut Vec<u8>,
) -> Unstructured<'a> {
    bytes.shuffle(rng);
    Unstructured::new(bytes.as_slice())
}