rustfs/crates/common/src/lib.rs

// Copyright 2024 RustFS Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// pub mod error;
pub mod globals;
pub mod heal_channel;
pub mod last_minute;
pub mod metrics;
mod readiness;
pub mod table_catalog;
pub mod trace_bus;

pub use globals::*;
pub use readiness::{GlobalReadiness, SystemStage};

// is ','
pub static DEFAULT_DELIMITER: u8 = 44;

/// Defers evaluation of a block of code until the end of the scope.
#[macro_export]
macro_rules! defer {
    ($($body:tt)*) => {
        let _guard = {
            pub struct Guard<F: FnOnce()>(Option<F>);

            impl<F: FnOnce()> Drop for Guard<F> {
                fn drop(&mut self) {
                    (self.0).take().map(|f| f());
                }
            }

            Guard(Some(|| {
                let _ = { $($body)* };
            }))
        };
    };
}