Add cancellation token for download service

StabilityMatrix.Core/Services/DownloadService.cs

@@ -17,43 +17,66 @@ public class DownloadService : IDownloadService
         this.httpClientFactory = httpClientFactory;
     }
 
-    public async Task DownloadToFileAsync(string downloadUrl, string downloadPath,
-        IProgress<ProgressReport>? progress = null, string? httpClientName = null)
+    public async Task DownloadToFileAsync(
+        string downloadUrl,
+        string downloadPath,
+        IProgress<ProgressReport>? progress = null,
+        string? httpClientName = null,
+        CancellationToken cancellationToken = default
+    )
     {
         using var client = string.IsNullOrWhiteSpace(httpClientName)
             ? httpClientFactory.CreateClient()
             : httpClientFactory.CreateClient(httpClientName);
-        
+
         client.Timeout = TimeSpan.FromMinutes(10);
-        client.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("StabilityMatrix", "2.0"));
-        await using var file = new FileStream(downloadPath, FileMode.Create, FileAccess.Write, FileShare.None);
-        
+        client.DefaultRequestHeaders.UserAgent.Add(
+            new ProductInfoHeaderValue("StabilityMatrix", "2.0")
+        );
+        await using var file = new FileStream(
+            downloadPath,
+            FileMode.Create,
+            FileAccess.Write,
+            FileShare.None
+        );
+
         long contentLength = 0;
 
-        var response = await client.GetAsync(downloadUrl, HttpCompletionOption.ResponseHeadersRead);
+        var response = await client
+            .GetAsync(downloadUrl, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
+            .ConfigureAwait(false);
         contentLength = response.Content.Headers.ContentLength ?? 0;
-        
+
         var delays = Backoff.DecorrelatedJitterBackoffV2(
-            TimeSpan.FromMilliseconds(50), retryCount: 3);
-        
+            TimeSpan.FromMilliseconds(50),
+            retryCount: 3
+        );
+
         foreach (var delay in delays)
         {
-            if (contentLength > 0) break;
+            if (contentLength > 0)
+                break;
             logger.LogDebug("Retrying get-headers for content-length");
-            await Task.Delay(delay);
-            response = await client.GetAsync(downloadUrl, HttpCompletionOption.ResponseHeadersRead);
+            await Task.Delay(delay, cancellationToken).ConfigureAwait(false);
+            response = await client
+                .GetAsync(downloadUrl, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
+                .ConfigureAwait(false);
             contentLength = response.Content.Headers.ContentLength ?? 0;
         }
         var isIndeterminate = contentLength == 0;
 
-        await using var stream = await response.Content.ReadAsStreamAsync();
+        await using var stream = await response.Content
+            .ReadAsStreamAsync(cancellationToken)
+            .ConfigureAwait(false);
         var totalBytesRead = 0L;
         var buffer = new byte[BufferSize];
         while (true)
         {
-            var bytesRead = await stream.ReadAsync(buffer);
-            if (bytesRead == 0) break;
-            await file.WriteAsync(buffer.AsMemory(0, bytesRead));
+            var bytesRead = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
+            if (bytesRead == 0)
+                break;
+            await file.WriteAsync(buffer.AsMemory(0, bytesRead), cancellationToken)
+                .ConfigureAwait(false);
 
             totalBytesRead += bytesRead;
 
@@ -63,13 +86,18 @@ public class DownloadService : IDownloadService
             }
             else
             {
-                progress?.Report(new ProgressReport(current: Convert.ToUInt64(totalBytesRead),
-                    total: Convert.ToUInt64(contentLength), message: "Downloading..."));
+                progress?.Report(
+                    new ProgressReport(
+                        current: Convert.ToUInt64(totalBytesRead),
+                        total: Convert.ToUInt64(contentLength),
+                        message: "Downloading..."
+                    )
+                );
             }
         }
 
-        await file.FlushAsync();
-        
+        await file.FlushAsync(cancellationToken).ConfigureAwait(false);
+
         progress?.Report(new ProgressReport(1f, message: "Download complete!"));
     }
 
@@ -77,11 +105,13 @@ public class DownloadService : IDownloadService
     {
         using var client = httpClientFactory.CreateClient();
         client.Timeout = TimeSpan.FromSeconds(10);
-        client.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("StabilityMatrix", "2.0"));
+        client.DefaultRequestHeaders.UserAgent.Add(
+            new ProductInfoHeaderValue("StabilityMatrix", "2.0")
+        );
         try
         {
-            var response = await client.GetAsync(url);
-            return await response.Content.ReadAsStreamAsync();
+            var response = await client.GetAsync(url).ConfigureAwait(false);
+            return await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
         }
         catch (Exception e)
         {

StabilityMatrix.Core/Services/IDownloadService.cs

@@ -4,8 +4,13 @@ namespace StabilityMatrix.Core.Services;
 
 public interface IDownloadService
 {
-    Task DownloadToFileAsync(string downloadUrl, string downloadPath,
-        IProgress<ProgressReport>? progress = null, string? httpClientName = null);
+    Task DownloadToFileAsync(
+        string downloadUrl,
+        string downloadPath,
+        IProgress<ProgressReport>? progress = null,
+        string? httpClientName = null,
+        CancellationToken cancellationToken = default
+    );
 
     Task<Stream> GetImageStreamFromUrl(string url);
 }