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* Add log viewer to watch app Signed-off-by: Tim Bert <[email protected]> --------- Signed-off-by: Tim Bert <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| // | ||
| // LogView.swift | ||
| // openHABWatch | ||
| // | ||
| // Created by Tim Müller-Seydlitz on 31.10.24. | ||
| // Copyright © 2024 openHAB e.V. All rights reserved. | ||
| // | ||
|
|
||
| import Foundation | ||
| import OSLog | ||
| import SwiftUI | ||
|
|
||
| // Thanks to https://useyourloaf.com/blog/fetching-oslog-messages-in-swift/ | ||
|
|
||
| extension OSLogEntryLog.Level { | ||
| fileprivate var description: String { | ||
| switch self { | ||
| case .undefined: "undefined" | ||
| case .debug: "debug" | ||
| case .info: "info" | ||
| case .notice: "notice" | ||
| case .error: "error" | ||
| case .fault: "fault" | ||
| @unknown default: "default" | ||
| } | ||
| } | ||
| } | ||
|
|
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| extension Logger { | ||
| static public func fetch(since date: Date, | ||
| predicateFormat: String) async throws -> [String] { | ||
| let store = try OSLogStore(scope: .currentProcessIdentifier) | ||
| let position = store.position(date: date) | ||
| let predicate = NSPredicate(format: predicateFormat) | ||
| let entries = try store.getEntries( | ||
| at: position, | ||
| matching: predicate | ||
| ) | ||
|
|
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| let dateFormatter = DateFormatter() | ||
| dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss" | ||
|
|
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| var logs: [String] = [] | ||
| for entry in entries { | ||
| try Task.checkCancellation() | ||
| if let log = entry as? OSLogEntryLog { | ||
| var attributedMessage = AttributedString(dateFormatter.string(from: entry.date)) | ||
| attributedMessage.font = .headline | ||
|
|
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| logs.append(""" | ||
| \(dateFormatter.string(from: entry.date)): \ | ||
| \(log.category):\(log.level.description): \ | ||
| \(entry.composedMessage)\n | ||
| """) | ||
| } else { | ||
| logs.append("\(entry.date): \(entry.composedMessage)\n") | ||
| } | ||
| } | ||
|
|
||
| if logs.isEmpty { logs = ["Nothing found"] } | ||
| return logs | ||
| } | ||
| } | ||
|
|
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| struct LogsViewer: View { | ||
| @State private var text = "Loading..." | ||
|
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| static private let template = NSPredicate(format: | ||
| "(subsystem BEGINSWITH $PREFIX)") | ||
|
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| let myFont = Font | ||
| .system(size: 10) | ||
| .monospaced() | ||
|
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| private func fetchLogs() async -> String { | ||
| let calendar = Calendar.current | ||
| guard let dayAgo = calendar.date(byAdding: .day, | ||
| value: -1, to: Date.now) else { | ||
| return "Invalid calendar" | ||
| } | ||
|
|
||
| do { | ||
| let predicate = Self.template.withSubstitutionVariables( | ||
| [ | ||
| "PREFIX": "org.openhab" | ||
| ]) | ||
|
|
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| let logs = try await Logger.fetch(since: dayAgo, | ||
| predicateFormat: predicate.predicateFormat) | ||
| return logs.joined() | ||
| } catch { | ||
| return error.localizedDescription | ||
| } | ||
| } | ||
|
|
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| var body: some View { | ||
|
|
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| ScrollView { | ||
| Text(text) | ||
| .font(myFont) | ||
| .padding() | ||
| } | ||
| .task { | ||
| text = await fetchLogs() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #Preview { | ||
| LogsViewer() | ||
| } |