canic-core 0.25.9

Canic — a canister orchestration and management toolkit for the Internet Computer
Documentation 
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use crate::{
    domain::policy,
    ops::{
        config::ConfigOps,
        ic::IcOps,
        runtime::{log::LogOps, timer::TimerId},
    },
    workflow::{
        config::{WORKFLOW_INIT_DELAY, WORKFLOW_LOG_RETENTION_INTERVAL},
        prelude::*,
        runtime::timer::TimerWorkflow,
    },
};
use std::{cell::RefCell, time::Duration};

thread_local! {
    static RETENTION_TIMER: RefCell<Option<TimerId>> = const { RefCell::new(None) };
}

const RETENTION_INTERVAL: Duration = WORKFLOW_LOG_RETENTION_INTERVAL;

///
/// LogRetentionWorkflow
///

pub struct LogRetentionWorkflow;

impl LogRetentionWorkflow {
    /// Start periodic log retention sweeps.
    pub fn start() {
        let _ = TimerWorkflow::set_guarded_interval(
            &RETENTION_TIMER,
            WORKFLOW_INIT_DELAY,
            "log_retention:init",
            || async {
                let _ = Self::retain();
            },
            RETENTION_INTERVAL,
            "log_retention:interval",
            || async {
                let _ = Self::retain();
            },
        );
    }

    /// Run a retention sweep immediately.
    #[must_use]
    pub fn retain() -> bool {
        let cfg = match ConfigOps::log_config() {
            Ok(cfg) => cfg,
            Err(err) => {
                log!(Topic::Memory, Warn, "log retention skipped: {err}");
                return false;
            }
        };
        let now = IcOps::now_secs();
        let params = policy::log::retention_params(&cfg, now);

        match LogOps::apply_retention(params.cutoff, params.max_entries, params.max_entry_bytes) {
            Ok(summary) => {
                let dropped = summary.dropped_total();
                if dropped > 0 {
                    log!(
                        Topic::Memory,
                        Info,
                        "log retention: dropped={}, before={}, retained={}",
                        dropped,
                        summary.before,
                        summary.retained
                    );
                }
                true
            }
            Err(err) => {
                log!(Topic::Memory, Warn, "log retention failed: {err}");
                false
            }
        }
    }
}