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feat(config): add SCHEDULER_ROUND_ROBIN_MAX_INTERVAL option

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Add option to cap maximum refresh interval when RSS TTL, Retry-After, Cache-Control, or Expires headers specify excessively high values.
This commit is contained in:
Frédéric Guillot 2025-04-11 15:32:19 -07:00
parent 0ef21e85c2
commit d086317c51
7 changed files with 89 additions and 7 deletions
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15
internal/model/feed.go
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@ -117,9 +117,7 @@ func (f *Feed) CheckedNow() {
}
// ScheduleNextCheck set "next_check_at" of a feed based on the scheduler selected from the configuration.
func (f *Feed) ScheduleNextCheck(weeklyCount int, refreshDelayInMinutes int) {
f.TTL = refreshDelayInMinutes
func (f *Feed) ScheduleNextCheck(weeklyCount int, refreshDelayInMinutes int) int {
// Default to the global config Polling Frequency.
intervalMinutes := config.Opts.SchedulerRoundRobinMinInterval()
@ -133,12 +131,21 @@ func (f *Feed) ScheduleNextCheck(weeklyCount int, refreshDelayInMinutes int) {
}
}
// If the feed has a TTL or a Retry-After defined, we use it to make sure we don't check it too often.
// Use the RSS TTL field, Retry-After, Cache-Control or Expires HTTP headers if defined.
if refreshDelayInMinutes > 0 && refreshDelayInMinutes > intervalMinutes {
intervalMinutes = refreshDelayInMinutes
}
// Limit the max interval value for misconfigured feeds.
switch config.Opts.PollingScheduler() {
case SchedulerRoundRobin:
intervalMinutes = min(intervalMinutes, config.Opts.SchedulerRoundRobinMaxInterval())
case SchedulerEntryFrequency:
intervalMinutes = min(intervalMinutes, config.Opts.SchedulerEntryFrequencyMaxInterval())
}
f.NextCheckAt = time.Now().Add(time.Minute * time.Duration(intervalMinutes))
return intervalMinutes
}
// FeedCreationRequest represents the request to create a feed.