cloudiful-scheduler 0.4.7

Single-job async scheduling library for background work with optional Valkey-backed state.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146

use super::next_after;
use crate::{
    InvalidJobKind, JobTimeWindow, Schedule, SchedulerError, TimeWindowSegment,
    WindowedIntervalSchedule,
};
use chrono::{NaiveTime, TimeZone, Utc};
use std::time::Duration;

fn utc_segment(start_hour: u32, end_hour: u32) -> JobTimeWindow {
    JobTimeWindow {
        timezone: Some(chrono_tz::UTC),
        weekdays: Vec::new(),
        segments: vec![TimeWindowSegment::new(
            NaiveTime::from_hms_opt(start_hour, 0, 0).unwrap(),
            NaiveTime::from_hms_opt(end_hour, 0, 0).unwrap(),
        )],
    }
}

#[test]
fn uses_matching_window_frequency() {
    let scheduled_at = Utc.with_ymd_and_hms(2026, 5, 8, 9, 0, 0).unwrap();
    let windowed = WindowedIntervalSchedule::new(Some(Duration::from_secs(1800)))
        .with_window(utc_segment(9, 10), Some(Duration::from_secs(30)));

    let next = next_after(scheduled_at, &windowed, chrono_tz::UTC).unwrap();

    assert_eq!(
        next,
        Some(Utc.with_ymd_and_hms(2026, 5, 8, 9, 0, 30).unwrap())
    );
}

#[test]
fn recomputes_when_candidate_enters_lower_frequency_period() {
    let scheduled_at = Utc.with_ymd_and_hms(2026, 5, 8, 9, 59, 45).unwrap();
    let windowed = WindowedIntervalSchedule::new(Some(Duration::from_secs(1800)))
        .with_window(utc_segment(9, 10), Some(Duration::from_secs(30)));

    let next = next_after(scheduled_at, &windowed, chrono_tz::UTC).unwrap();

    assert_eq!(
        next,
        Some(Utc.with_ymd_and_hms(2026, 5, 8, 10, 30, 15).unwrap())
    );
}

#[test]
fn disabled_default_starts_at_next_enabled_window() {
    let scheduled_at = Utc.with_ymd_and_hms(2026, 5, 8, 8, 0, 0).unwrap();
    let windowed = WindowedIntervalSchedule::new(None)
        .with_window(utc_segment(9, 10), Some(Duration::from_secs(30)));

    let next = next_after(scheduled_at, &windowed, chrono_tz::UTC).unwrap();

    assert_eq!(
        next,
        Some(Utc.with_ymd_and_hms(2026, 5, 8, 9, 0, 0).unwrap())
    );
}

#[test]
fn disabled_window_resumes_at_window_end() {
    let scheduled_at = Utc.with_ymd_and_hms(2026, 5, 8, 11, 45, 0).unwrap();
    let windowed = WindowedIntervalSchedule::new(Some(Duration::from_secs(1800)))
        .with_window(utc_segment(12, 13), None);

    let next = next_after(scheduled_at, &windowed, chrono_tz::UTC).unwrap();

    assert_eq!(
        next,
        Some(Utc.with_ymd_and_hms(2026, 5, 8, 13, 0, 0).unwrap())
    );
}

#[test]
fn supports_cross_midnight_windows() {
    let scheduled_at = Utc.with_ymd_and_hms(2026, 5, 8, 21, 0, 0).unwrap();
    let windowed = WindowedIntervalSchedule::new(None)
        .with_window(utc_segment(22, 2), Some(Duration::from_secs(3600)));

    let next = next_after(scheduled_at, &windowed, chrono_tz::UTC).unwrap();

    assert_eq!(
        next,
        Some(Utc.with_ymd_and_hms(2026, 5, 8, 22, 0, 0).unwrap())
    );

    let next = next_after(
        Utc.with_ymd_and_hms(2026, 5, 9, 1, 30, 0).unwrap(),
        &windowed,
        chrono_tz::UTC,
    )
    .unwrap();

    assert_eq!(
        next,
        Some(Utc.with_ymd_and_hms(2026, 5, 9, 22, 0, 0).unwrap())
    );
}

#[test]
fn first_matching_window_wins() {
    let scheduled_at = Utc.with_ymd_and_hms(2026, 5, 8, 8, 59, 0).unwrap();
    let windowed = WindowedIntervalSchedule::new(Some(Duration::from_secs(1800)))
        .with_window(utc_segment(9, 10), None)
        .with_window(utc_segment(9, 10), Some(Duration::from_secs(30)));

    let next = next_after(scheduled_at, &windowed, chrono_tz::UTC).unwrap();

    assert_eq!(
        next,
        Some(Utc.with_ymd_and_hms(2026, 5, 8, 10, 0, 0).unwrap())
    );
}

#[test]
fn all_disabled_is_noop() {
    let scheduled_at = Utc.with_ymd_and_hms(2026, 5, 8, 8, 59, 0).unwrap();
    let windowed = WindowedIntervalSchedule::new(None).with_window(utc_segment(9, 10), None);

    let next = next_after(scheduled_at, &windowed, chrono_tz::UTC).unwrap();

    assert!(next.is_none());
}

#[test]
fn rejects_zero_frequency() {
    let windowed =
        WindowedIntervalSchedule::new(None).with_window(utc_segment(9, 10), Some(Duration::ZERO));

    let error = next_after(Utc::now(), &windowed, chrono_tz::UTC).unwrap_err();

    assert!(matches!(
        error,
        SchedulerError::InvalidJob(ref invalid)
            if invalid.kind() == InvalidJobKind::ZeroInterval
    ));
}

#[test]
fn schedule_variant_compiles_against_public_type() {
    let schedule = Schedule::WindowedInterval(WindowedIntervalSchedule::new(None));

    assert!(matches!(schedule, Schedule::WindowedInterval(_)));
}