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Purge old persistent history after processing 

Closes #480
This commit is contained in:
Shadowfacts 2024-06-08 12:23:12 -07:00
parent 6528070f1c
commit d8fccc8f1b
1 changed files with 27 additions and 4 deletions
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31
Tusker/CoreData/MastodonCachePersistentStore.swift
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@ -530,11 +530,34 @@ class MastodonCachePersistentStore: NSPersistentCloudKitContainer {
defer {
PersistentHistoryTokenStore.setToken(token, for: accountInfo)
}
let req = NSPersistentHistoryChangeRequest.fetchHistory(after: lastToken)
if let result = try? self.remoteChangesBackgroundContext.execute(req) as? NSPersistentHistoryResult,
let transactions = result.result as? [NSPersistentHistoryTransaction],
!transactions.isEmpty {
let transactions: [NSPersistentHistoryTransaction]
do {
let req = NSPersistentHistoryChangeRequest.fetchHistory(after: lastToken)
if let result = try self.remoteChangesBackgroundContext.execute(req) as? NSPersistentHistoryResult {
transactions = result.result as? [NSPersistentHistoryTransaction] ?? []
} else {
logger.error("Unexpectedly non-NSPersistentHistoryResult")
return
}
} catch {
logger.error("Unable to fetch persistent history results: \(String(describing: error), privacy: .public)")
return
}
if !transactions.isEmpty {
self.processPersistentHistoryTransactions(transactions)
do {
// delete history only before the last token, because we don't want to invalidate
// the most recent token
let deleteReq = NSPersistentHistoryChangeRequest.deleteHistory(before: lastToken)
let result = try self.remoteChangesBackgroundContext.execute(deleteReq)
if let result = result as? NSPersistentHistoryResult,
result.resultType == .statusOnly {
logger.info("Delete old persistent history result status: \(result.result as! Int)")
}
} catch {
logger.error("Unable to delete old persistent history: \(String(describing: error), privacy: .public)")
}
}
}
}