Crate canlog

See the crate documentation.

lib.rs:

This crate extends ic_canister_log to provide native support for log priority levels, filtering and sorting.

The main functionality is provided by the LogPriorityLevels and GetLogFilter traits as well as the [log] macro.

Custom log priority levels may be defined by declaring an enum and implementing the LogPriorityLevels trait for it, usually through the derive annotation available with the derive feature of canlog.

Additionally, log filtering may be achieved by implementing the GetLogFilter trait on the enum defining the log priorities.

• Example:

use canlog::{GetLogFilter, LogFilter, LogPriorityLevels, log};

#[derive(LogPriorityLevels)]
enum LogPriority {
    #[log_level(capacity = 100, name = "INFO")]
    Info,
    #[log_level(capacity = 500, name = "DEBUG")]
    Debug,
}

impl GetLogFilter for LogPriority {
    fn get_log_filter() -> LogFilter {
        LogFilter::ShowAll
    }
}

fn main() {
    log!(LogPriority::Info, "Some rather important message.");
    log!(LogPriority::Debug, "Some less important message.");
}

Expected Output:

2025-02-26 08:27:10 UTC: [Canister lxzze-o7777-77777-aaaaa-cai] INFO main.rs:13 Some rather important message.
2025-02-26 08:27:10 UTC: [Canister lxzze-o7777-77777-aaaaa-cai] DEBUG main.rs:14 Some less important message.