ruzor 0.1.2

Ruzor, a 1:1-compatible Rust port of the Pyzor UDP client and server
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

use std::fs::OpenOptions;
use std::io::{self, Write};
use std::path::PathBuf;
use std::time::{SystemTime, UNIX_EPOCH};

use crate::local_time;

#[derive(Clone, Debug)]
pub struct Logger {
    file_path: Option<PathBuf>,
    debug: bool,
}

#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
pub enum Level {
    Debug = 10,
    Info = 20,
    Warning = 30,
    Error = 40,
    Critical = 50,
}

impl Level {
    fn label(self) -> &'static str {
        match self {
            Self::Debug => "DEBUG",
            Self::Info => "INFO",
            Self::Warning => "WARNING",
            Self::Error => "ERROR",
            Self::Critical => "CRITICAL",
        }
    }
}

impl Logger {
    pub fn new(_name: &str, file_path: Option<String>, debug: bool) -> io::Result<Self> {
        let file_path = file_path.filter(|path| !path.is_empty()).map(PathBuf::from);
        if let Some(path) = &file_path {
            OpenOptions::new().create(true).append(true).open(path)?;
        }
        Ok(Self { file_path, debug })
    }

    pub fn debug(&self, message: impl AsRef<str>) {
        self.log(Level::Debug, message);
    }

    pub fn info(&self, message: impl AsRef<str>) {
        self.log(Level::Info, message);
    }

    pub fn warning(&self, message: impl AsRef<str>) {
        self.log(Level::Warning, message);
    }

    pub fn error(&self, message: impl AsRef<str>) {
        self.log(Level::Error, message);
    }

    pub fn critical(&self, message: impl AsRef<str>) {
        self.log(Level::Critical, message);
    }

    pub fn log(&self, level: Level, message: impl AsRef<str>) {
        let line = format!(
            "{} ({}) {} {}\n",
            timestamp(),
            std::process::id(),
            level.label(),
            message.as_ref()
        );

        if level >= self.stream_level() {
            eprint!("{line}");
        }
        if level >= self.file_level()
            && let Some(path) = &self.file_path
            && let Ok(mut file) = OpenOptions::new().create(true).append(true).open(path)
        {
            let _ = file.write_all(line.as_bytes());
        }
    }

    fn stream_level(&self) -> Level {
        if self.debug {
            Level::Debug
        } else {
            Level::Critical
        }
    }

    fn file_level(&self) -> Level {
        if self.debug {
            Level::Debug
        } else {
            Level::Info
        }
    }
}

fn timestamp() -> String {
    let duration = SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap_or_default();
    format!(
        "{},{:03}",
        local_time::format_timestamp(duration.as_secs() as i64),
        duration.subsec_millis()
    )
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn default_logger_writes_critical_to_stderr_level_and_info_to_file_level() {
        let logger = Logger {
            file_path: None,
            debug: false,
        };
        assert_eq!(logger.stream_level(), Level::Critical);
        assert_eq!(logger.file_level(), Level::Info);
    }

    #[test]
    fn debug_logger_writes_debug_to_stream_and_file() {
        let logger = Logger {
            file_path: None,
            debug: true,
        };
        assert_eq!(logger.stream_level(), Level::Debug);
        assert_eq!(logger.file_level(), Level::Debug);
    }
}