resident-utils 0.7.0

Resident program library.
Documentation 
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pub use deadpool_postgres;
use std::{future::Future, time::Duration};

use chrono::prelude::*;
use cron::Schedule;
use tokio::{spawn, task::JoinHandle};
use tokio_util::sync::CancellationToken;

use crate::{execute_sleep, LoopState};

pub fn make_looper<Fut1, Fut2>(
    pg_pool: deadpool_postgres::Pool,
    redis_pool: deadpool_redis::Pool,
    token: CancellationToken,
    schedule: Schedule,
    stop_check_duration: Duration,
    task_function: impl Fn(
            DateTime<Utc>,
            Result<deadpool_postgres::Client, deadpool_postgres::PoolError>,
            Result<deadpool_redis::Connection, deadpool_redis::PoolError>,
            CancellationToken,
        ) -> Fut1
        + Send
        + Sync
        + 'static,
    stop_function: impl Fn(
            Result<deadpool_postgres::Client, deadpool_postgres::PoolError>,
            Result<deadpool_redis::Connection, deadpool_redis::PoolError>,
        ) -> Fut2
        + Send
        + Sync
        + 'static,
) -> JoinHandle<()>
where
    Fut1: Future<Output = LoopState> + Send,
    Fut2: Future<Output = ()> + Send,
{
    spawn(async move {
        let mut next_tick: DateTime<Utc> = match schedule.upcoming(Utc).next() {
            Some(next_tick) => next_tick,
            None => {
                stop_function(pg_pool.get().await, redis_pool.get().await).await;
                return;
            }
        };
        loop {
            // グレースフルストップのチェック
            if token.is_cancelled() {
                stop_function(pg_pool.get().await, redis_pool.get().await).await;
                break;
            }

            let now = Utc::now();
            if now >= next_tick {
                // 定期的に行う処理実行
                if let Some(res) = task_function(
                    now,
                    pg_pool.get().await,
                    redis_pool.get().await,
                    token.clone(),
                )
                .await
                .looper(&token, &now, &schedule)
                {
                    next_tick = res;
                } else {
                    stop_function(pg_pool.get().await, redis_pool.get().await).await;
                    break;
                }
            }

            execute_sleep(&stop_check_duration, &next_tick, &now).await;
        }
    })
}

pub fn make_worker<Fut1, Fut2>(
    pg_pool: deadpool_postgres::Pool,
    redis_pool: deadpool_redis::Pool,
    token: CancellationToken,
    stop_check_duration: Duration,
    task_function: impl Fn(
            DateTime<Utc>,
            Result<deadpool_postgres::Client, deadpool_postgres::PoolError>,
            Result<deadpool_redis::Connection, deadpool_redis::PoolError>,
            CancellationToken,
        ) -> Fut1
        + Send
        + Sync
        + 'static,
    stop_function: impl Fn(
            Result<deadpool_postgres::Client, deadpool_postgres::PoolError>,
            Result<deadpool_redis::Connection, deadpool_redis::PoolError>,
        ) -> Fut2
        + Send
        + Sync
        + 'static,
) -> JoinHandle<()>
where
    Fut1: Future<Output = LoopState> + Send,
    Fut2: Future<Output = ()> + Send,
{
    spawn(async move {
        // 動き出した瞬間は実行する
        let mut next_tick: DateTime<Utc> = Utc::now();
        loop {
            // グレースフルストップのチェック
            if token.is_cancelled() {
                stop_function(pg_pool.get().await, redis_pool.get().await).await;
                break;
            }

            // 現在時間と次実行する処理の時間をチェックする
            let now = Utc::now();
            if now >= next_tick {
                // 定期的に行う処理実行
                if let Some(res) = task_function(
                    now,
                    pg_pool.get().await,
                    redis_pool.get().await,
                    token.clone(),
                )
                .await
                .worker(&token, &now)
                {
                    next_tick = res;
                } else {
                    stop_function(pg_pool.get().await, redis_pool.get().await).await;
                    break;
                }
            }

            execute_sleep(&stop_check_duration, &next_tick, &now).await;
        }
    })
}