Distributed mutually exclusive locks in MongoDB.

This crate contains only sync implementation. If you need a async version, use mongo-lock-async crate.

This implementation relies on system time. Ensure that NTP clients on your servers are configured properly.

Installation

Add this crate to Cargo.toml

toml [dependencies] mongo_lock = "0"

Usage

```rust fn main() { let mongo = mongodb::sync::Client::withuristr("mongodb://localhost").unwrap();

// We need to ensure that mongodb collection has a proper index.
mongo_lock::prepare_database(&mongo).unwrap();

if let Ok(Some(lock)) =
    mongo_lock::Lock::try_acquire(
        &mongo,
        "my-key",
        std::time::Duration::from_secs(30)
    )
{
    println!("Lock acquired.");

    // The lock will be released automatically after leaving the scope.
}

} ```