fibre_logging 0.5.8

A flexible, multimode sync/async logging library that unifies the log and tracing ecosystems, driven by external configuration and featuring powerful debug instrumentation.
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

use chrono::{DateTime, Utc};
use core::fmt;
use std::collections::HashMap;
use tracing::Level;

/// Represents a loggable value, part of a `LogEvent`'s fields.
#[derive(Debug, Clone, PartialEq)]
pub enum LogValue {
  String(String),
  Int(i64),
  Float(f64),
  Bool(bool),
  Debug(String),
}

impl fmt::Display for LogValue {
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
    match self {
      LogValue::String(s) => write!(f, "{}", s),
      LogValue::Int(i) => write!(f, "{}", i),
      LogValue::Float(f_val) => write!(f, "{}", f_val),
      LogValue::Bool(b) => write!(f, "{}", b),
      LogValue::Debug(d) => write!(f, "{}", d),
    }
  }
}

/// The internal structured representation of a log event within `fibre_logging`.
#[derive(Debug, Clone)]
pub struct LogEvent {
  /// Timestamp of when the event was observed or generated.
  pub timestamp: DateTime<Utc>,
  /// The severity level of the event.
  pub level: Level,
  /// The target of the event (e.g., module path or a custom target string).
  pub target: String,
  /// The name of the span emitting the event, or the event's "name" if explicitly set.
  pub name: String,
  /// The primary message associated with the event, often from a "message" field.
  pub message: Option<String>,
  /// Key-value pairs of structured data associated with the event.
  pub fields: HashMap<String, LogValue>,
  /// ID of the current span, if any.
  pub span_id: Option<String>,
  /// ID of the parent span, if any.
  pub parent_id: Option<String>,
  /// Thread ID where the event originated.
  pub thread_id: Option<String>,
  /// Thread name where the event originated.
  pub thread_name: Option<String>,
}

impl LogEvent {
  /// Creates a new `LogEvent` with minimal required fields.
  /// Accepts any string-like type for target, name, and message.
  pub fn new<S1, S2>(level: Level, target: S1, name: S2, message: Option<String>) -> Self
  where
    S1: Into<String>,
    S2: Into<String>,
  {
    LogEvent {
      timestamp: Utc::now(),
      level,
      target: target.into(),
      name: name.into(),
      message,
      fields: HashMap::new(),
      span_id: None,
      parent_id: None,
      thread_id: None,
      thread_name: None,
    }
  }
}