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8fad8c4b9b
updates tailcale/corp#22371 Adds custom macOS vm tooling. See the README for the general gist, but this will spin up VMs with unixgram capable network interfaces listening to a named socket, and with a virtio socket device for host-guest communication. We can add other devices like consoles, serial, etc as needed. The whole things is buildable with a single make command, and everything is controllable via the command line using the TailMac utility. This should all be generally functional but takes a few shortcuts with error handling and the like. The virtio socket device support has not been tested and may require some refinement. Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
59 lines
1.9 KiB
Swift
59 lines
1.9 KiB
Swift
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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import Foundation
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import Virtualization
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class RestoreImage: NSObject {
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private var downloadObserver: NSKeyValueObservation?
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// MARK: Observe the download progress.
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var restoreImageURL: URL
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init(_ dest: URL) {
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restoreImageURL = dest
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}
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public func download(completionHandler: @escaping () -> Void) {
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print("Attempting to download latest available restore image.")
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VZMacOSRestoreImage.fetchLatestSupported { [self](result: Result<VZMacOSRestoreImage, Error>) in
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switch result {
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case let .failure(error):
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fatalError(error.localizedDescription)
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case let .success(restoreImage):
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downloadRestoreImage(restoreImage: restoreImage, completionHandler: completionHandler)
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}
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}
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}
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private func downloadRestoreImage(restoreImage: VZMacOSRestoreImage, completionHandler: @escaping () -> Void) {
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let downloadTask = URLSession.shared.downloadTask(with: restoreImage.url) { localURL, response, error in
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if let error = error {
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fatalError("Download failed. \(error.localizedDescription).")
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}
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do {
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try FileManager.default.moveItem(at: localURL!, to: self.restoreImageURL)
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} catch {
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fatalError("Failed to move downloaded restore image to \(self.restoreImageURL) \(error).")
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}
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completionHandler()
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}
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var lastPct = 0
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downloadObserver = downloadTask.progress.observe(\.fractionCompleted, options: [.initial, .new]) { (progress, change) in
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let pct = Int(change.newValue! * 100)
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if pct != lastPct {
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print("Restore image download progress: \(pct)%")
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lastPct = pct
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}
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}
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downloadTask.resume()
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}
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}
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