mirror of
https://github.com/nextcloud/desktop.git
synced 2024-11-26 15:06:08 +03:00
601 lines
36 KiB
Swift
601 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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guard directoryMetadata.etag != "" else {
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Logger.enumeration.info("Skipping enumeration of unexplored directory for working set: \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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continue;
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}
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dispatchGroup.enter() // Add to outer counter
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dispatchQueue.async {
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guard serverError == nil else {
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Logger.enumeration.info("Skipping enumeration of directory for working set: \(directoryMetadata.serverUrl, 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(directoryMetadata.serverUrl, 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 \(directoryMetadata.serverUrl, 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: directoryMetadata.serverUrl)
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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.fullRecursiveScanForChanges(ncAccount: self.ncAccount, ncKit: self.ncKit) { 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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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: deletedMetadatas)
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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 {
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observer.didDeleteItems(withIdentifiers: allFpItemDeletionsIdentifiers)
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}
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Logger.enumeration.info("Processed \(allUpdatedMetadatas.count) new or updated metadatas, \(allDeletedMetadatas.count) deleted metadatas.")
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observer.finishEnumeratingChanges(upTo: anchor, moreComing: false)
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}
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private static func fullRecursiveScanForChanges(ncAccount: NextcloudAccount, ncKit: NextcloudKit, completionHandler: @escaping(_ newMetadatas: [NextcloudItemMetadataTable], _ updatedMetadatas: [NextcloudItemMetadataTable], _ deletedMetadatas: [NextcloudItemMetadataTable]) -> Void) {
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let rootContainerDirectoryMetadata = NextcloudDirectoryMetadataTable()
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rootContainerDirectoryMetadata.serverUrl = ncAccount.davFilesUrl
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rootContainerDirectoryMetadata.account = ncAccount.ncKitAccount
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rootContainerDirectoryMetadata.ocId = NSFileProviderItemIdentifier.rootContainer.rawValue
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// Create a serial dispatch queue
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let dispatchQueue = DispatchQueue(label: "recursiveChangeEnumerationQueue", qos: .background)
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dispatchQueue.async {
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let results = scanRecursivelyForChanges(rootContainerDirectoryMetadata, ncAccount: ncAccount, ncKit: ncKit)
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DispatchQueue.main.async {
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completionHandler(results.newMetadatas, results.updatedMetadatas, results.deletedMetadatas)
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}
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}
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}
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private static func scanRecursivelyForChanges(_ directoryMetadata: NextcloudDirectoryMetadataTable, ncAccount: NextcloudAccount, ncKit: NextcloudKit) -> (newMetadatas: [NextcloudItemMetadataTable], updatedMetadatas: [NextcloudItemMetadataTable], deletedMetadatas: [NextcloudItemMetadataTable]) {
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guard directoryMetadata.etag != "" || directoryMetadata.serverUrl == ncAccount.davFilesUrl else {
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Logger.enumeration.info("Skipping enumeration of changes in unexplored directory for working \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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return ([], [], [])
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}
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var allNewMetadatas: [NextcloudItemMetadataTable] = []
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var allUpdatedMetadatas: [NextcloudItemMetadataTable] = []
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var allDeletedMetadatas: [NextcloudItemMetadataTable] = []
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let dbManager = NextcloudFilesDatabaseManager.shared
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let dispatchGroup = DispatchGroup() // TODO: Maybe own thread?
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dispatchGroup.enter()
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Logger.enumeration.debug("About to read: \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash))")
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FileProviderEnumerator.readServerUrl(directoryMetadata.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 at \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) with \(readError!.localizedDescription, privacy: .public)")
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let nkReadError = NKError(error: readError!)
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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 as deletion without error")
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guard let directoryItemMetadata = dbManager.itemMetadataFromOcId(directoryMetadata.ocId) else {
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Logger.enumeration.error("Can't delete directory properly as item metadata not found...")
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dispatchGroup.leave()
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return
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}
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dbManager.deleteDirectoryAndSubdirectoriesMetadata(ocId: directoryMetadata.ocId)
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allDeletedMetadatas.append(directoryItemMetadata)
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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. No need to check children.")
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}
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dispatchGroup.leave()
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return
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}
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Logger.enumeration.info("Finished reading serverUrl: \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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if let newMetadatas = newMetadatas {
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allNewMetadatas += newMetadatas
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} else {
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Logger.enumeration.warning("WARNING: Nil new metadatas received for reading of changes at \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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}
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if let updatedMetadatas = updatedMetadatas {
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allUpdatedMetadatas += updatedMetadatas
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} else {
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Logger.enumeration.warning("WARNING: Nil updated metadatas received for reading of changes at \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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}
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if let deletedMetadatas = deletedMetadatas {
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allDeletedMetadatas += deletedMetadatas
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} else {
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Logger.enumeration.warning("WARNING: Nil deleted metadatas received for reading of changes at \(directoryMetadata.serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) for user: \(ncAccount.ncKitAccount, privacy: OSLogPrivacy.auto(mask: .hash))")
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}
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dispatchGroup.leave()
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}
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dispatchGroup.wait()
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var updatedDirectories: [NextcloudDirectoryMetadataTable] = []
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for updatedMetadata in allUpdatedMetadatas {
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if updatedMetadata.directory {
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guard let directoryMetadata = dbManager.directoryMetadata(ocId: updatedMetadata.ocId) else {
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Logger.enumeration.error("Could not find matching directory metadata for updated item metadata, cannot scan for updates")
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continue
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}
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updatedDirectories.append(directoryMetadata)
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}
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}
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if updatedDirectories.isEmpty {
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return (newMetadatas: allNewMetadatas, updatedMetadatas: allUpdatedMetadatas, deletedMetadatas: allDeletedMetadatas)
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}
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for childDirectory in updatedDirectories {
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let childScanResult = scanRecursivelyForChanges(childDirectory, ncAccount: ncAccount, ncKit: ncKit)
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allNewMetadatas += childScanResult.newMetadatas
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allUpdatedMetadatas += childScanResult.updatedMetadatas
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allDeletedMetadatas += childScanResult.deletedMetadatas
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}
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return (newMetadatas: allNewMetadatas, updatedMetadatas: allUpdatedMetadatas, deletedMetadatas: allDeletedMetadatas)
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}
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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) {
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let dbManager = NextcloudFilesDatabaseManager.shared
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let ncKitAccount = ncAccount.ncKitAccount
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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)")
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ncKit.readFileOrFolder(serverUrlFileName: serverUrl, depth: "0", showHiddenFiles: true) { account, files, _, error in
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guard error == .success else {
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Logger.enumeration.error("0 depth readFileOrFolder of url: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) did not complete successfully, received error: \(error.errorDescription, privacy: .public)")
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completionHandler(nil, nil, nil, nil, error.error)
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return
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}
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guard let receivedItem = files.first else {
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Logger.enumeration.error("Received no items from readFileOrFolder of \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)), not much we can do...")
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completionHandler(nil, nil, nil, nil, error.error)
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return
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}
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guard receivedItem.directory else {
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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))")
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let itemMetadata = dbManager.convertNKFileToItemMetadata(receivedItem, account: ncKitAccount)
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dbManager.addItemMetadata(itemMetadata) // TODO: Return some value when it is an update
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completionHandler([itemMetadata], nil, nil, nil, error.error)
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return
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}
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if stopAtMatchingEtags,
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let directoryMetadata = dbManager.directoryMetadata(account: ncKitAccount, serverUrl: serverUrl) {
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let directoryEtag = directoryMetadata.etag
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guard directoryEtag == "" || directoryEtag != receivedItem.etag else {
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Logger.enumeration.debug("Read server url called with flag to stop enumerating at matching etags. Returning and providing soft error.")
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let description = "Fetched directory etag is same as that stored locally. Not fetching child items."
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let nkError = NKError(errorCode: NKError.noChangesErrorCode, errorDescription: description)
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completionHandler(nil, nil, nil, nil, nkError.error)
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return
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}
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}
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|
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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")
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|
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ncKit.readFileOrFolder(serverUrlFileName: serverUrl, depth: "1", showHiddenFiles: true) { account, files, _, error in
|
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guard error == .success else {
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Logger.enumeration.error("1 depth readFileOrFolder of url: \(serverUrl, privacy: OSLogPrivacy.auto(mask: .hash)) did not complete successfully, received error: \(error.errorDescription, privacy: .public)")
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completionHandler(nil, nil, nil, nil, error.error)
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return
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}
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|
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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))")
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DispatchQueue.main.async {
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dbManager.convertNKFilesFromDirectoryReadToItemMetadatas(files, account: ncKitAccount) { directoryMetadata, childDirectoriesMetadata, metadatas in
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|
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// STORE DATA FOR CURRENTLY SCANNED DIRECTORY
|
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// 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 {
|
|
let directoryItemMetadata = dbManager.directoryMetadataFromItemMetadata(directoryItemMetadata: directoryMetadata, recordEtag: true)
|
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dbManager.addDirectoryMetadata(directoryItemMetadata)
|
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}
|
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|
|
// STORE ETAG-LESS DIRECTORY METADATA FOR CHILD DIRECTORIES
|
|
// Since we haven't scanned the contents of the child directories, don't record their itemMetadata etags in the directory tables
|
|
// This will delete database records for directories that we did not get from the readFileOrFolder (indicating they were deleted)
|
|
// as well as deleting the records for all the children contained by the directories.
|
|
// TODO: Find a way to detect if files have been moved rather than deleted and change the metadata server urls, move the materialised files
|
|
dbManager.updateDirectoryMetadatasFromItemMetadatas(account: ncKitAccount, parentDirectoryServerUrl: serverUrl, updatedDirectoryItemMetadatas: childDirectoriesMetadata)
|
|
// TODO: Notify working set changed if new folders found
|
|
|
|
dbManager.updateItemMetadatas(account: ncKitAccount, serverUrl: serverUrl, updatedMetadatas: metadatas) { newMetadatas, updatedMetadatas, deletedMetadatas in
|
|
completionHandler(metadatas, newMetadatas, updatedMetadatas, deletedMetadatas, nil)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
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