mirror of
https://github.com/nextcloud/desktop.git
synced 2024-11-23 05:25:50 +03:00
621 lines
36 KiB
Swift
621 lines
36 KiB
Swift
/*
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* Copyright (C) 2022 by Claudio Cambra <claudio.cambra@nextcloud.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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import FileProvider
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import NextcloudKit
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import OSLog
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class FileProviderEnumerator: NSObject, NSFileProviderEnumerator {
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private let enumeratedItemIdentifier: NSFileProviderItemIdentifier
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private var enumeratedItemMetadata: NextcloudItemMetadataTable?
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private var enumeratingSystemIdentifier: Bool {
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return FileProviderEnumerator.isSystemIdentifier(enumeratedItemIdentifier)
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}
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private let anchor = NSFileProviderSyncAnchor(Date().description.data(using: .utf8)!) // TODO: actually use this in NCKit and server requests
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private static let maxItemsPerFileProviderPage = 100
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let ncAccount: NextcloudAccount
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let ncKit: NextcloudKit
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var serverUrl: String = ""
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private static func isSystemIdentifier(_ identifier: NSFileProviderItemIdentifier) -> Bool {
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return identifier == .rootContainer ||
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identifier == .trashContainer ||
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identifier == .workingSet
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}
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init(enumeratedItemIdentifier: NSFileProviderItemIdentifier, ncAccount: NextcloudAccount, ncKit: NextcloudKit) {
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self.enumeratedItemIdentifier = enumeratedItemIdentifier
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self.ncAccount = ncAccount
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self.ncKit = ncKit
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if FileProviderEnumerator.isSystemIdentifier(enumeratedItemIdentifier) {
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Logger.enumeration.debug("Providing enumerator for a system defined container: \(enumeratedItemIdentifier.rawValue, privacy: .public)")
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self.serverUrl = ncAccount.davFilesUrl
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} else {
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Logger.enumeration.debug("Providing enumerator for item with identifier: \(enumeratedItemIdentifier.rawValue, privacy: .public)")
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let dbManager = NextcloudFilesDatabaseManager.shared
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enumeratedItemMetadata = dbManager.itemMetadataFromFileProviderItemIdentifier(enumeratedItemIdentifier)
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if enumeratedItemMetadata != nil {
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self.serverUrl = enumeratedItemMetadata!.serverUrl + "/" + enumeratedItemMetadata!.fileName
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} else {
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Logger.enumeration.error("Could not find itemMetadata for file with identifier: \(enumeratedItemIdentifier.rawValue, privacy: .public)")
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}
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}
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Logger.enumeration.info("Set up enumerator for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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super.init()
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}
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func invalidate() {
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// TODO: perform invalidation of server connection if necessary
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}
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// MARK: - Protocol methods
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func enumerateItems(for observer: NSFileProviderEnumerationObserver, startingAt page: NSFileProviderPage) {
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Logger.enumeration.debug("Received enumerate items request for enumerator with user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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/*
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- inspect the page to determine whether this is an initial or a follow-up request (TODO)
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If this is an enumerator for a directory, the root container or all directories:
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- perform a server request to fetch directory contents
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If this is an enumerator for the working set:
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- perform a server request to update your local database
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- fetch the working set from your local database
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- inform the observer about the items returned by the server (possibly multiple times)
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- inform the observer that you are finished with this page
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*/
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let dbManager = NextcloudFilesDatabaseManager.shared
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// If we don't have any items in the database, ignore this and go for a normal serverUrl read.
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// By default we set the serverUrl to be the webdav files root when we are provided a system container id.
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// However, if we do have items, we want to do a recursive scan of all the folders in the server that
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// ** we have already explored ** . This is to not kill the server.
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if enumeratedItemIdentifier == .workingSet && dbManager.anyItemMetadatasForAccount(ncAccount.ncKitAccount) {
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if page == NSFileProviderPage.initialPageSortedByDate as NSFileProviderPage ||
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page == NSFileProviderPage.initialPageSortedByName as NSFileProviderPage {
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let directoryMetadatas = dbManager.directoryMetadatas(account: ncAccount.ncKitAccount)
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var allMetadatas: [NextcloudItemMetadataTable] = []
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var serverError: NKError?
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// Create a serial dispatch queue
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let dispatchQueue = DispatchQueue(label: "workingSetItemEnumerationQueue", qos: .userInitiated)
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let dispatchGroup = DispatchGroup() // To notify when all network tasks are done
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dispatchGroup.notify(queue: DispatchQueue.main) {
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guard serverError == nil else {
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observer.finishEnumeratingWithError(serverError!.error)
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return
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}
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FileProviderEnumerator.completeEnumerationObserver(observer, ncKit: self.ncKit, numPage: 1, itemMetadatas: allMetadatas)
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}
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for directoryMetadata in directoryMetadatas {
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dispatchGroup.enter() // Add to outer counter
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dispatchQueue.async {
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let directoryServerUrl = directoryMetadata.serverUrl + "/" + directoryMetadata.fileName
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guard serverError == nil else {
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Logger.enumeration.info("Skipping enumeration of directory for working set: \(directoryServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) as we have an error.")
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dispatchGroup.leave()
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return;
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}
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let currentNetworkTaskDispatchGroup = DispatchGroup() // To make this serial queue wait until this task is done
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currentNetworkTaskDispatchGroup.enter()
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FileProviderEnumerator.readServerUrl(directoryServerUrl, ncAccount: self.ncAccount, ncKit: self.ncKit) { metadatas, _, _, _, readError in
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guard readError == nil else {
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Logger.enumeration.error("Finishing enumeration of working set directory \(directoryServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) with error \(readError!.localizedDescription, privacy: .public)")
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let nkError = NKError(error: readError!)
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if nkError.isUnauthenticatedError || nkError.isCouldntConnectError {
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// If it is a critical error then stop, if not then continue
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Logger.enumeration.error("Error will affect next enumerated items, so stopping enumeration.")
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serverError = nkError
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}
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currentNetworkTaskDispatchGroup.leave()
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return
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}
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if let metadatas = metadatas {
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allMetadatas += metadatas
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} else {
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allMetadatas += dbManager.itemMetadatas(account: self.ncAccount.ncKitAccount, serverUrl: directoryServerUrl)
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}
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currentNetworkTaskDispatchGroup.leave()
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}
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currentNetworkTaskDispatchGroup.wait()
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dispatchGroup.leave() // Now lower outer counter
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}
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}
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return
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} else {
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Logger.enumeration.debug("Enumerating page \(page.rawValue) of working set for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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// TODO!
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observer.finishEnumerating(upTo: nil)
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}
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return
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} else if enumeratedItemIdentifier == .trashContainer {
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Logger.enumeration.debug("Enumerating trash set for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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// TODO!
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observer.finishEnumerating(upTo: nil)
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return
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}
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guard serverUrl != "" else {
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Logger.enumeration.error("Enumerator has empty serverUrl -- can't enumerate that! For identifier: \(self.enumeratedItemIdentifier.rawValue, privacy: .public)")
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observer.finishEnumeratingWithError(NSFileProviderError(.noSuchItem))
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return
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}
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// TODO: Make better use of pagination and andle paging properly
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if page == NSFileProviderPage.initialPageSortedByDate as NSFileProviderPage ||
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page == NSFileProviderPage.initialPageSortedByName as NSFileProviderPage {
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Logger.enumeration.debug("Enumerating initial page for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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FileProviderEnumerator.readServerUrl(serverUrl, ncAccount: ncAccount, ncKit: ncKit) { _, _, _, _, readError in
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guard readError == nil else {
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Logger.enumeration.error("Finishing enumeration for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) with error \(readError!.localizedDescription, privacy: .public)")
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let nkReadError = NKError(error: readError!)
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observer.finishEnumeratingWithError(nkReadError.toFileProviderError())
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return
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}
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let ncKitAccount = self.ncAccount.ncKitAccount
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// Return all now known metadatas
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var metadatas: [NextcloudItemMetadataTable]
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if self.enumeratingSystemIdentifier || (self.enumeratedItemMetadata != nil && self.enumeratedItemMetadata!.directory) {
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metadatas = NextcloudFilesDatabaseManager.shared.itemMetadatas(account: ncKitAccount, serverUrl: self.serverUrl)
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} else if (self.enumeratedItemMetadata != nil) {
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guard let updatedEnumeratedItemMetadata = NextcloudFilesDatabaseManager.shared.itemMetadataFromOcId(self.enumeratedItemMetadata!.ocId) else {
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Logger.enumeration.error("Could not finish enumeration for user: \(ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) as the enumerated item could not be fetched from database. \(self.enumeratedItemIdentifier.rawValue, privacy: .public)")
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observer.finishEnumeratingWithError(NSFileProviderError(.noSuchItem))
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return
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}
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metadatas = [updatedEnumeratedItemMetadata]
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} else { // We need to have an enumeratedItemMetadata to have a non empty serverUrl
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Logger.enumeration.error("Cannot finish enumeration for user: \(ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) as we do not have a valid server URL. NOTE: this error should not be possible and indicates something is going wrong before.")
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observer.finishEnumeratingWithError(NSFileProviderError(.noSuchItem))
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return
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}
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Logger.enumeration.info("Finished reading serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)). Processed \(metadatas.count) metadatas")
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FileProviderEnumerator.completeEnumerationObserver(observer, ncKit: self.ncKit, numPage: 1, itemMetadatas: metadatas)
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}
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return;
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}
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let numPage = Int(String(data: page.rawValue, encoding: .utf8)!)!
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Logger.enumeration.debug("Enumerating page \(numPage, privacy: .public) for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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// TODO: Handle paging properly
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// FileProviderEnumerator.completeObserver(observer, ncKit: ncKit, numPage: numPage, itemMetadatas: nil)
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observer.finishEnumerating(upTo: nil)
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}
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func enumerateChanges(for observer: NSFileProviderChangeObserver, from anchor: NSFileProviderSyncAnchor) {
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Logger.enumeration.debug("Received enumerate changes request for enumerator for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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/*
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- query the server for updates since the passed-in sync anchor (TODO)
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If this is an enumerator for the working set:
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- note the changes in your local database
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- inform the observer about item deletions and updates (modifications + insertions)
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- inform the observer when you have finished enumerating up to a subsequent sync anchor
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*/
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if enumeratedItemIdentifier == .workingSet {
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Logger.enumeration.debug("Enumerating changes in working set for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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FileProviderEnumerator.fullRecursiveScan(ncAccount: self.ncAccount, ncKit: self.ncKit, scanChangesOnly: true) { newMetadatas, updatedMetadatas, deletedMetadatas in
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Logger.enumeration.info("Finished recursive change enumeration of working set for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)). Enumerating items.")
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// Run a check to ensure files deleted in one location are not updated in another (e.g. when moved)
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// The recursive scan provides us with updated/deleted metadatas only on a folder by folder basis;
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// so we need to check we are not simultaneously marking a moved file as deleted and updated
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var checkedDeletedMetadatas = deletedMetadatas
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for updatedMetadata in updatedMetadatas {
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guard let matchingDeletedMetadataIdx = checkedDeletedMetadatas.firstIndex(where: { $0.ocId == updatedMetadata.ocId } ) else {
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continue;
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}
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checkedDeletedMetadatas.remove(at: matchingDeletedMetadataIdx)
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}
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FileProviderEnumerator.completeChangesObserver(observer,
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anchor: anchor,
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ncKit: self.ncKit,
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newMetadatas: newMetadatas,
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updatedMetadatas: updatedMetadatas,
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deletedMetadatas: checkedDeletedMetadatas)
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}
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return
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} else if enumeratedItemIdentifier == .trashContainer {
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Logger.enumeration.debug("Enumerating changes in trash set for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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// TODO!
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observer.finishEnumeratingChanges(upTo: anchor, moreComing: false)
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return
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}
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Logger.enumeration.info("Enumerating changes for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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// No matter what happens here we finish enumeration in some way, either from the error
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// handling below or from the completeChangesObserver
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FileProviderEnumerator.readServerUrl(serverUrl, ncAccount: ncAccount, ncKit: ncKit, stopAtMatchingEtags: true) { _, newMetadatas, updatedMetadatas, deletedMetadatas, readError in
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guard readError == nil else {
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Logger.enumeration.error("Finishing enumeration of changes for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) with serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) with error: \(readError!.localizedDescription, privacy: .public)")
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let nkReadError = NKError(error: readError!)
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let fpError = nkReadError.toFileProviderError()
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if nkReadError.isNotFoundError {
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Logger.enumeration.info("404 error means item no longer exists. Deleting metadata and reporting \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) as deletion without error")
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guard let itemMetadata = self.enumeratedItemMetadata else {
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Logger.enumeration.error("Invalid enumeratedItemMetadata, could not delete metadata nor report deletion")
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observer.finishEnumeratingWithError(fpError)
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return
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}
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let dbManager = NextcloudFilesDatabaseManager.shared
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if itemMetadata.directory {
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dbManager.deleteDirectoryAndSubdirectoriesMetadata(ocId: itemMetadata.ocId)
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} else {
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dbManager.deleteItemMetadata(ocId: itemMetadata.ocId)
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}
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FileProviderEnumerator.completeChangesObserver(observer, anchor: anchor, ncKit: self.ncKit, newMetadatas: nil, updatedMetadatas: nil, deletedMetadatas: [itemMetadata])
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return
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} else if nkReadError.isNoChangesError { // All is well, just no changed etags
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Logger.enumeration.info("Error was to say no changed files -- not bad error. Finishing change enumeration.")
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observer.finishEnumeratingChanges(upTo: anchor, moreComing: false)
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return;
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}
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observer.finishEnumeratingWithError(fpError)
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return
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}
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Logger.enumeration.info("Finished reading serverUrl: \(self.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(self.ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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FileProviderEnumerator.completeChangesObserver(observer, anchor: anchor, ncKit: self.ncKit, newMetadatas: newMetadatas, updatedMetadatas: updatedMetadatas, deletedMetadatas: deletedMetadatas)
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}
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}
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func currentSyncAnchor(completionHandler: @escaping (NSFileProviderSyncAnchor?) -> Void) {
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completionHandler(anchor)
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}
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// MARK: - Helper methods
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private static func completeEnumerationObserver(_ observer: NSFileProviderEnumerationObserver, ncKit: NextcloudKit, numPage: Int, itemMetadatas: [NextcloudItemMetadataTable]) {
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var items: [NSFileProviderItem] = []
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for itemMetadata in itemMetadatas {
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if itemMetadata.e2eEncrypted {
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Logger.enumeration.info("Skipping encrypted metadata in enumeration: \(itemMetadata.ocId) \(itemMetadata.fileName, privacy: OSLogPrivacy.auto(mask: .hash))")
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continue
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}
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if let parentItemIdentifier = NextcloudFilesDatabaseManager.shared.parentItemIdentifierFromMetadata(itemMetadata) {
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let item = FileProviderItem(metadata: itemMetadata, parentItemIdentifier: parentItemIdentifier, ncKit: ncKit)
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Logger.enumeration.debug("Will enumerate item with ocId: \(itemMetadata.ocId) and name: \(itemMetadata.fileName, privacy: OSLogPrivacy.auto(mask: .hash))")
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items.append(item)
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} else {
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Logger.enumeration.error("Could not get valid parentItemIdentifier for item with ocId: \(itemMetadata.ocId, privacy: .public) and name: \(itemMetadata.fileName, privacy: OSLogPrivacy.auto(mask: .hash)), skipping enumeration")
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}
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}
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observer.didEnumerate(items)
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Logger.enumeration.info("Did enumerate \(items.count) items")
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// TODO: Handle paging properly
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/*
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if items.count == maxItemsPerFileProviderPage {
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let nextPage = numPage + 1
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let providerPage = NSFileProviderPage("\(nextPage)".data(using: .utf8)!)
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observer.finishEnumerating(upTo: providerPage)
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} else {
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observer.finishEnumerating(upTo: nil)
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}
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*/
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observer.finishEnumerating(upTo: NSFileProviderPage("\(numPage)".data(using: .utf8)!))
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}
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private static func completeChangesObserver(_ observer: NSFileProviderChangeObserver, anchor: NSFileProviderSyncAnchor, ncKit: NextcloudKit, newMetadatas: [NextcloudItemMetadataTable]?, updatedMetadatas: [NextcloudItemMetadataTable]?, deletedMetadatas: [NextcloudItemMetadataTable]?) {
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guard newMetadatas != nil || updatedMetadatas != nil || deletedMetadatas != nil else {
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Logger.enumeration.error("Received invalid newMetadatas, updatedMetadatas or deletedMetadatas. Finished enumeration of changes with error.")
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observer.finishEnumeratingWithError(NSFileProviderError(.noSuchItem))
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return
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}
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// Observer does not care about new vs updated, so join
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var allUpdatedMetadatas: [NextcloudItemMetadataTable] = []
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var allDeletedMetadatas: [NextcloudItemMetadataTable] = []
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if let newMetadatas = newMetadatas {
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allUpdatedMetadatas += newMetadatas
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}
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if let updatedMetadatas = updatedMetadatas {
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allUpdatedMetadatas += updatedMetadatas
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}
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if let deletedMetadatas = deletedMetadatas {
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allDeletedMetadatas = deletedMetadatas
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}
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var allFpItemUpdates: [FileProviderItem] = []
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var allFpItemDeletionsIdentifiers = Array(allDeletedMetadatas.map { NSFileProviderItemIdentifier($0.ocId) })
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for updMetadata in allUpdatedMetadatas {
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guard let parentItemIdentifier = NextcloudFilesDatabaseManager.shared.parentItemIdentifierFromMetadata(updMetadata) else {
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Logger.enumeration.warning("Not enumerating change for metadata: \(updMetadata.ocId) \(updMetadata.fileName, privacy: OSLogPrivacy.auto(mask: .hash)) as could not get parent item metadata.")
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continue
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}
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guard !updMetadata.e2eEncrypted else {
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// Precaution, if all goes well in NKFile conversion then this should not happen
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// TODO: Remove when E2EE supported
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Logger.enumeration.info("Encrypted metadata in changes enumeration \(updMetadata.ocId) \(updMetadata.fileName, privacy: OSLogPrivacy.auto(mask: .hash)), adding to deletions")
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allFpItemDeletionsIdentifiers.append(NSFileProviderItemIdentifier(updMetadata.ocId))
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continue
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}
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let fpItem = FileProviderItem(metadata: updMetadata, parentItemIdentifier: parentItemIdentifier, ncKit: ncKit)
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allFpItemUpdates.append(fpItem)
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}
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if !allFpItemUpdates.isEmpty {
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observer.didUpdate(allFpItemUpdates)
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}
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|
if !allFpItemDeletionsIdentifiers.isEmpty {
|
|
observer.didDeleteItems(withIdentifiers: allFpItemDeletionsIdentifiers)
|
|
}
|
|
|
|
Logger.enumeration.info("Processed \(allUpdatedMetadatas.count) new or updated metadatas, \(allDeletedMetadatas.count) deleted metadatas.")
|
|
observer.finishEnumeratingChanges(upTo: anchor, moreComing: false)
|
|
}
|
|
|
|
private static func fullRecursiveScan(ncAccount: NextcloudAccount, ncKit: NextcloudKit, scanChangesOnly: Bool, completionHandler: @escaping(_ newMetadatas: [NextcloudItemMetadataTable], _ updatedMetadatas: [NextcloudItemMetadataTable], _ deletedMetadatas: [NextcloudItemMetadataTable]) -> Void) {
|
|
|
|
let rootContainerDirectoryMetadata = NextcloudItemMetadataTable()
|
|
rootContainerDirectoryMetadata.directory = true
|
|
rootContainerDirectoryMetadata.ocId = NSFileProviderItemIdentifier.rootContainer.rawValue
|
|
|
|
// Create a serial dispatch queue
|
|
let dispatchQueue = DispatchQueue(label: "recursiveChangeEnumerationQueue", qos: .background)
|
|
|
|
dispatchQueue.async {
|
|
let results = scanRecursively(rootContainerDirectoryMetadata, ncAccount: ncAccount, ncKit: ncKit, scanChangesOnly: scanChangesOnly)
|
|
|
|
DispatchQueue.main.async {
|
|
completionHandler(results.newMetadatas, results.updatedMetadatas, results.deletedMetadatas)
|
|
}
|
|
}
|
|
}
|
|
|
|
private static func scanRecursively(_ directoryMetadata: NextcloudItemMetadataTable, ncAccount: NextcloudAccount, ncKit: NextcloudKit, scanChangesOnly: Bool) -> (metadatas: [NextcloudItemMetadataTable], newMetadatas: [NextcloudItemMetadataTable], updatedMetadatas: [NextcloudItemMetadataTable], deletedMetadatas: [NextcloudItemMetadataTable]) {
|
|
|
|
assert(directoryMetadata.directory, "Can only recursively scan a directory.")
|
|
|
|
var allMetadatas: [NextcloudItemMetadataTable] = []
|
|
var allNewMetadatas: [NextcloudItemMetadataTable] = []
|
|
var allUpdatedMetadatas: [NextcloudItemMetadataTable] = []
|
|
var allDeletedMetadatas: [NextcloudItemMetadataTable] = []
|
|
|
|
let dbManager = NextcloudFilesDatabaseManager.shared
|
|
let dispatchGroup = DispatchGroup() // TODO: Maybe own thread?
|
|
|
|
dispatchGroup.enter()
|
|
|
|
let itemServerUrl = directoryMetadata.ocId == NSFileProviderItemIdentifier.rootContainer.rawValue ?
|
|
ncAccount.davFilesUrl : directoryMetadata.serverUrl + "/" + directoryMetadata.fileName
|
|
|
|
Logger.enumeration.debug("About to read: \(itemServerUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
|
|
FileProviderEnumerator.readServerUrl(itemServerUrl, ncAccount: ncAccount, ncKit: ncKit, stopAtMatchingEtags: scanChangesOnly) { metadatas, newMetadatas, updatedMetadatas, deletedMetadatas, readError in
|
|
|
|
if readError != nil {
|
|
let nkReadError = NKError(error: readError!)
|
|
|
|
// Is the error is that we have found matching etags on this item, then ignore it
|
|
// if we are doing a full rescan
|
|
guard nkReadError.isNoChangesError && scanChangesOnly else {
|
|
Logger.enumeration.error("Finishing enumeration of changes at \(itemServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) with \(readError!.localizedDescription, privacy: .public)")
|
|
|
|
if nkReadError.isNotFoundError {
|
|
Logger.enumeration.info("404 error means item no longer exists. Deleting metadata and reporting as deletion without error")
|
|
|
|
guard let directoryItemMetadata = dbManager.itemMetadataFromOcId(directoryMetadata.ocId) else {
|
|
Logger.enumeration.error("Can't delete directory properly as item metadata not found...")
|
|
dispatchGroup.leave()
|
|
return
|
|
}
|
|
|
|
dbManager.deleteDirectoryAndSubdirectoriesMetadata(ocId: directoryMetadata.ocId)
|
|
allDeletedMetadatas.append(directoryItemMetadata)
|
|
} else if nkReadError.isNoChangesError { // All is well, just no changed etags
|
|
Logger.enumeration.info("Error was to say no changed files -- not bad error. No need to check children.")
|
|
}
|
|
|
|
dispatchGroup.leave()
|
|
return
|
|
}
|
|
}
|
|
|
|
Logger.enumeration.info("Finished reading serverUrl: \(itemServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
|
|
if let metadatas = metadatas {
|
|
allMetadatas += metadatas
|
|
} else {
|
|
Logger.enumeration.warning("WARNING: Nil metadatas received for reading of changes at \(itemServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
}
|
|
|
|
if let newMetadatas = newMetadatas {
|
|
allNewMetadatas += newMetadatas
|
|
} else {
|
|
Logger.enumeration.warning("WARNING: Nil new metadatas received for reading of changes at \(itemServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
}
|
|
|
|
if let updatedMetadatas = updatedMetadatas {
|
|
allUpdatedMetadatas += updatedMetadatas
|
|
} else {
|
|
Logger.enumeration.warning("WARNING: Nil updated metadatas received for reading of changes at \(itemServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
}
|
|
|
|
if let deletedMetadatas = deletedMetadatas {
|
|
allDeletedMetadatas += deletedMetadatas
|
|
} else {
|
|
Logger.enumeration.warning("WARNING: Nil deleted metadatas received for reading of changes at \(itemServerUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
}
|
|
|
|
dispatchGroup.leave()
|
|
}
|
|
|
|
dispatchGroup.wait()
|
|
|
|
var updatedDirectories: [NextcloudItemMetadataTable] = []
|
|
for updatedMetadata in allUpdatedMetadatas {
|
|
if updatedMetadata.directory {
|
|
guard let directoryMetadata = dbManager.directoryMetadata(ocId: updatedMetadata.ocId) else {
|
|
Logger.enumeration.error("Could not find matching directory metadata for updated item metadata, cannot scan for updates")
|
|
continue
|
|
}
|
|
|
|
updatedDirectories.append(directoryMetadata)
|
|
}
|
|
}
|
|
|
|
if updatedDirectories.isEmpty {
|
|
return (metadatas: allMetadatas, newMetadatas: allNewMetadatas, updatedMetadatas: allUpdatedMetadatas, deletedMetadatas: allDeletedMetadatas)
|
|
}
|
|
|
|
for childDirectory in updatedDirectories {
|
|
let childScanResult = scanRecursively(childDirectory, ncAccount: ncAccount, ncKit: ncKit, scanChangesOnly: scanChangesOnly)
|
|
|
|
allMetadatas += childScanResult.metadatas
|
|
allNewMetadatas += childScanResult.newMetadatas
|
|
allUpdatedMetadatas += childScanResult.updatedMetadatas
|
|
allDeletedMetadatas += childScanResult.deletedMetadatas
|
|
}
|
|
|
|
return (metadatas: allMetadatas, newMetadatas: allNewMetadatas, updatedMetadatas: allUpdatedMetadatas, deletedMetadatas: allDeletedMetadatas)
|
|
}
|
|
|
|
private static func readServerUrl(_ serverUrl: String, ncAccount: NextcloudAccount, ncKit: NextcloudKit, stopAtMatchingEtags: Bool = false, completionHandler: @escaping (_ metadatas: [NextcloudItemMetadataTable]?, _ newMetadatas: [NextcloudItemMetadataTable]?, _ updatedMetadatas: [NextcloudItemMetadataTable]?, _ deletedMetadatas: [NextcloudItemMetadataTable]?, _ readError: Error?) -> Void) {
|
|
let dbManager = NextcloudFilesDatabaseManager.shared
|
|
let ncKitAccount = ncAccount.ncKitAccount
|
|
|
|
Logger.enumeration.debug("Starting to read serverUrl: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) at depth 0. NCKit info: userId: \(ncKit.nkCommonInstance.user), password: \(ncKit.nkCommonInstance.password == "" ? "EMPTY PASSWORD" : "NOT EMPTY PASSWORD"), urlBase: \(ncKit.nkCommonInstance.urlBase), ncVersion: \(ncKit.nkCommonInstance.nextcloudVersion)")
|
|
|
|
ncKit.readFileOrFolder(serverUrlFileName: serverUrl, depth: "0", showHiddenFiles: true) { account, files, _, error in
|
|
guard error == .success else {
|
|
Logger.enumeration.error("0 depth readFileOrFolder of url: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) did not complete successfully, received error: \(error.errorDescription, privacy: .public)")
|
|
completionHandler(nil, nil, nil, nil, error.error)
|
|
return
|
|
}
|
|
|
|
guard let receivedItem = files.first else {
|
|
Logger.enumeration.error("Received no items from readFileOrFolder of \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)), not much we can do...")
|
|
completionHandler(nil, nil, nil, nil, error.error)
|
|
return
|
|
}
|
|
|
|
guard receivedItem.directory else {
|
|
Logger.enumeration.debug("Read item is a file. Converting NKfile for serverUrl: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
let itemMetadata = dbManager.convertNKFileToItemMetadata(receivedItem, account: ncKitAccount)
|
|
dbManager.addItemMetadata(itemMetadata) // TODO: Return some value when it is an update
|
|
completionHandler([itemMetadata], nil, nil, nil, error.error)
|
|
return
|
|
}
|
|
|
|
if stopAtMatchingEtags,
|
|
let directoryMetadata = dbManager.directoryMetadata(account: ncKitAccount, serverUrl: serverUrl) {
|
|
|
|
let directoryEtag = directoryMetadata.etag
|
|
|
|
guard directoryEtag == "" || directoryEtag != receivedItem.etag else {
|
|
Logger.enumeration.debug("Read server url called with flag to stop enumerating at matching etags. Returning and providing soft error.")
|
|
|
|
let description = "Fetched directory etag is same as that stored locally. Not fetching child items."
|
|
let nkError = NKError(errorCode: NKError.noChangesErrorCode, errorDescription: description)
|
|
|
|
let metadatas = dbManager.itemMetadatas(account: account, serverUrl: serverUrl)
|
|
|
|
completionHandler(metadatas, nil, nil, nil, nkError.error)
|
|
return
|
|
}
|
|
}
|
|
|
|
Logger.enumeration.debug("Starting to read serverUrl: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash)) at depth 1")
|
|
|
|
ncKit.readFileOrFolder(serverUrlFileName: serverUrl, depth: "1", showHiddenFiles: true) { account, files, _, error in
|
|
guard error == .success else {
|
|
Logger.enumeration.error("1 depth readFileOrFolder of url: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) did not complete successfully, received error: \(error.errorDescription, privacy: .public)")
|
|
completionHandler(nil, nil, nil, nil, error.error)
|
|
return
|
|
}
|
|
|
|
Logger.enumeration.debug("Starting async conversion of NKFiles for serverUrl: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
|
|
DispatchQueue.main.async {
|
|
dbManager.convertNKFilesFromDirectoryReadToItemMetadatas(files, account: ncKitAccount) { directoryMetadata, childDirectoriesMetadata, metadatas in
|
|
|
|
// STORE DATA FOR CURRENTLY SCANNED DIRECTORY
|
|
// We have now scanned this directory's contents, so update with etag in order to not check again if not needed
|
|
// unless it's the root container
|
|
if serverUrl != ncAccount.davFilesUrl {
|
|
dbManager.addItemMetadata(directoryMetadata)
|
|
}
|
|
|
|
dbManager.updateItemMetadatas(account: ncKitAccount, serverUrl: serverUrl, updatedMetadatas: metadatas) { newMetadatas, updatedMetadatas, deletedMetadatas in
|
|
completionHandler(metadatas, newMetadatas, updatedMetadatas, deletedMetadatas, nil)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|