Created
January 14, 2022 14:55
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| sealed trait CrawledUrl { val url: URl } | |
| case class PendingURL extends CrawledUrl(url: URL) | |
| case class InFlightURL extends CrawledUrl(url: URL) | |
| case class VisitedURL extends CrawledUrl(url: URL) | |
| object UrlSource2 { | |
| val urlStore: scala.collection.concurrent.Map[URL, CrawledUrl] | |
| def completeTask(doneUrl: URL): Unit = { | |
| urlStore.updateWith(doneUrl, VisitedURL(doneUrl.url)) | |
| } | |
| def consumeTask(): Option[URL] = { | |
| urlStore.find { | |
| case url: PendingURL => url | |
| } map { foundUrl | |
| urlStore.updateWith(foundUrl, InFlightURL(doneUrl.url)) | |
| } | |
| } | |
| } |
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