Initial implementation of Google Workspace backup.

This is a WIP and still needs the restore part implemented. Not all resources are fully tested but basic elements work.
2026-02-04 15:44:23 +01:00
parent 1b1719e924
commit da246874ec
69 changed files with 3803 additions and 3 deletions
@@ -0,0 +1,40 @@
+// Copyright (c) 2026 Duplicati Inc. All rights reserved.
+
+namespace Duplicati.Proprietary.GoogleWorkspace.SourceItems;
+
+internal class StreamResourceEntryFunction(string path, DateTime createdUtc, DateTime lastModificationUtc, long size, Func<CancellationToken, Task<Stream>> streamFactory, Func<CancellationToken, Task<Dictionary<string, string?>>>? minorMetadataFactory = null)
+    : StreamResourceEntryBase(path, createdUtc, lastModificationUtc)
+{
+    public override long Size => _stream == null ? size : _stream.Length;
+    private Stream? _stream;
+
+    public async Task<bool> ProbeIfExistsAsync(CancellationToken cancellationToken)
+    {
+        if (_stream != null)
+            return true;
+
+        try
+        {
+            _stream = await streamFactory(cancellationToken).ConfigureAwait(false);
+            return _stream != null;
+        }
+        catch (FileNotFoundException)
+        {
+            return false;
+        }
+        catch (HttpRequestException ex) when (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
+        {
+            return false;
+        }
+    }
+
+    public override async Task<Stream> OpenRead(CancellationToken cancellationToken)
+        => _stream != null
+            ? _stream
+            : (await streamFactory(cancellationToken).ConfigureAwait(false) ?? throw new FileNotFoundException($"Resource not found: {Path}"));
+
+    public override Task<Dictionary<string, string?>> GetMinorMetadata(CancellationToken cancellationToken)
+        => minorMetadataFactory != null
+            ? minorMetadataFactory(cancellationToken)
+            : base.GetMinorMetadata(cancellationToken);
+}