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# Conflicts: # Amplitude-Swift.xcodeproj/project.pbxproj # Sources/Amplitude/Amplitude.swift
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108 changes: 108 additions & 0 deletions
108
Sources/Amplitude/Migration/StoragePrefixMigration.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| import Foundation | ||
|
|
||
| class StoragePrefixMigration { | ||
| let source: PersistentStorage | ||
| let destination: PersistentStorage | ||
| let logger: (any Logger)? | ||
|
|
||
| init(source: PersistentStorage, destination: PersistentStorage, logger: (any Logger)?) { | ||
| self.source = source | ||
| self.destination = destination | ||
| self.logger = logger | ||
| } | ||
|
|
||
| func execute() { | ||
| if source.storagePrefix == destination.storagePrefix { | ||
| return | ||
| } | ||
|
|
||
| moveSourceEventFilesToDestination() | ||
| moveUserDefaults() | ||
| } | ||
|
|
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| private func moveUserDefaults() { | ||
| moveStringProperty(StorageKey.DEVICE_ID) | ||
| moveStringProperty(StorageKey.USER_ID) | ||
| moveIntegerProperty(StorageKey.PREVIOUS_SESSION_ID) | ||
| moveIntegerProperty(StorageKey.LAST_EVENT_TIME) | ||
| moveIntegerProperty(StorageKey.LAST_EVENT_ID) | ||
| moveEventsFileKey() | ||
| } | ||
|
|
||
| private func moveSourceEventFilesToDestination() { | ||
| let sourceEventFiles = source.getEventFiles(includeUnfinished: true) | ||
| if sourceEventFiles.count == 0 { | ||
| return | ||
| } | ||
| // Ensure destination directory exists. | ||
| _ = destination.getEventsStorageDirectory(createDirectory: true) | ||
|
|
||
| let fileManager = FileManager.default | ||
| for sourceEventFile in sourceEventFiles { | ||
| var destinationEventFile = sourceEventFile.path.replacingOccurrences(of: "/\(source.eventsFileKey)/", with: "/\(destination.eventsFileKey)/") | ||
| if fileManager.fileExists(atPath: destinationEventFile) { | ||
| var fileExtension = sourceEventFile.pathExtension | ||
| if fileExtension != "" { | ||
| fileExtension = ".\(fileExtension)" | ||
| } | ||
| destinationEventFile = "\((destinationEventFile as NSString).deletingPathExtension)-\(NSUUID().uuidString)\(fileExtension)" | ||
| } | ||
| do { | ||
| try fileManager.moveItem(atPath: sourceEventFile.path, toPath: destinationEventFile) | ||
| } catch { | ||
| logger?.warn(message: "Can't move \(sourceEventFile) to \(destinationEventFile): \(error)") | ||
| } | ||
| } | ||
| } | ||
|
|
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| private func moveStringProperty(_ key: StorageKey) { | ||
| guard let sourceValue: String = source.read(key: key) else { | ||
| return | ||
| } | ||
|
|
||
| if destination.read(key: key) == nil { | ||
| do { | ||
| try destination.write(key: key, value: sourceValue) | ||
| } catch { | ||
| logger?.warn(message: "can't write destination \(key): \(error)") | ||
| } | ||
| } | ||
|
|
||
| do { | ||
| try source.write(key: key, value: nil) | ||
| } catch { | ||
| logger?.warn(message: "can't write source \(key): \(error)") | ||
| } | ||
| } | ||
|
|
||
| private func moveIntegerProperty(_ key: StorageKey) { | ||
| guard let sourceValue: Int = source.read(key: key) else { | ||
| return | ||
| } | ||
|
|
||
| let destinationValue: Int? = destination.read(key: key) | ||
| if destinationValue == nil || destinationValue! < sourceValue { | ||
| do { | ||
| try destination.write(key: key, value: sourceValue) | ||
| } catch { | ||
| logger?.warn(message: "can't write destination \(key): \(error)") | ||
| } | ||
| } | ||
|
|
||
| do { | ||
| try source.write(key: key, value: nil) | ||
| } catch { | ||
| logger?.warn(message: "can't clear source \(key): \(error)") | ||
| } | ||
| } | ||
|
|
||
| private func moveEventsFileKey() { | ||
| if let sourceEventFileKey: Int = source.userDefaults?.integer(forKey: source.eventsFileKey) { | ||
| let destinationEventFileKey: Int? = destination.userDefaults?.integer(forKey: destination.eventsFileKey) | ||
| if destinationEventFileKey == nil || destinationEventFileKey! < sourceEventFileKey { | ||
| destination.userDefaults?.set(sourceEventFileKey, forKey: destination.eventsFileKey) | ||
| } | ||
| } | ||
| source.userDefaults?.removeObject(forKey: source.eventsFileKey) | ||
| } | ||
| } |
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