mqtt_protocol_core/mqtt/common/
tracing.rs

1// MIT License
2//
3// Copyright (c) 2025 Takatoshi Kondo
4//
5// Permission is hereby granted, free of charge, to any person obtaining a copy
6// of this software and associated documentation files (the "Software"), to deal
7// in the Software without restriction, including without limitation the rights
8// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9// copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in all
13// copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21// SOFTWARE.
22
23/// Feature-conditional tracing macros
24/// When the 'tracing' feature is enabled, these delegate to the real tracing macros.
25/// When disabled, they compile to no-ops.
26
27#[cfg(feature = "tracing")]
28pub use tracing::{debug, error, info, trace, warn};
29
30#[cfg(not(feature = "tracing"))]
31#[macro_export]
32macro_rules! trace {
33    ($($arg:tt)*) => {};
34}
35
36#[cfg(not(feature = "tracing"))]
37#[macro_export]
38macro_rules! debug {
39    ($($arg:tt)*) => {};
40}
41
42#[cfg(not(feature = "tracing"))]
43#[macro_export]
44macro_rules! info {
45    ($($arg:tt)*) => {};
46}
47
48#[cfg(not(feature = "tracing"))]
49#[macro_export]
50macro_rules! warn {
51    ($($arg:tt)*) => {};
52}
53
54#[cfg(not(feature = "tracing"))]
55#[macro_export]
56macro_rules! error {
57    ($($arg:tt)*) => {};
58}
59
60#[cfg(not(feature = "tracing"))]
61pub use crate::{debug, error, info, trace, warn};