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FileContainerServer.cs
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FileContainerServer.cs
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using GitHub.Services.FileContainer.Client;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Diagnostics;
using GitHub.Services.WebApi;
using System.Net.Http;
using System.Net;
using GitHub.Runner.Sdk;
using GitHub.Services.FileContainer;
using GitHub.Services.Common;
namespace GitHub.Runner.Plugins.Artifact
{
public class FileContainerServer
{
private const int _defaultFileStreamBufferSize = 4096;
//81920 is the default used by System.IO.Stream.CopyTo and is under the large object heap threshold (85k).
private const int _defaultCopyBufferSize = 81920;
private readonly ConcurrentQueue<string> _fileUploadQueue = new ConcurrentQueue<string>();
private readonly ConcurrentQueue<DownloadInfo> _fileDownloadQueue = new ConcurrentQueue<DownloadInfo>();
private readonly ConcurrentDictionary<string, ConcurrentQueue<string>> _fileUploadTraceLog = new ConcurrentDictionary<string, ConcurrentQueue<string>>();
private readonly ConcurrentDictionary<string, ConcurrentQueue<string>> _fileUploadProgressLog = new ConcurrentDictionary<string, ConcurrentQueue<string>>();
private readonly FileContainerHttpClient _fileContainerHttpClient;
private CancellationTokenSource _uploadCancellationTokenSource;
private CancellationTokenSource _downloadCancellationTokenSource;
private TaskCompletionSource<int> _uploadFinished;
private TaskCompletionSource<int> _downloadFinished;
private Guid _projectId;
private long _containerId;
private string _containerPath;
private int _uploadFilesProcessed = 0;
private int _downloadFilesProcessed = 0;
private string _sourceParentDirectory;
public FileContainerServer(
VssConnection connection,
Guid projectId,
long containerId,
string containerPath)
{
_projectId = projectId;
_containerId = containerId;
_containerPath = containerPath;
// default file upload/download request timeout to 600 seconds
var fileContainerClientConnectionSetting = connection.Settings.Clone();
if (fileContainerClientConnectionSetting.SendTimeout < TimeSpan.FromSeconds(600))
{
fileContainerClientConnectionSetting.SendTimeout = TimeSpan.FromSeconds(600);
}
var fileContainerClientConnection = new VssConnection(connection.Uri, connection.Credentials, fileContainerClientConnectionSetting);
_fileContainerHttpClient = fileContainerClientConnection.GetClient<FileContainerHttpClient>();
}
public async Task DownloadFromContainerAsync(
RunnerActionPluginExecutionContext context,
String destination,
CancellationToken cancellationToken)
{
// Find out all container items need to be processed
List<FileContainerItem> containerItems = new List<FileContainerItem>();
int retryCount = 0;
while (retryCount < 3)
{
try
{
containerItems = await _fileContainerHttpClient.QueryContainerItemsAsync(_containerId,
_projectId,
_containerPath,
cancellationToken: cancellationToken);
break;
}
catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
{
context.Debug($"Container query has been cancelled.");
throw;
}
catch (Exception ex) when (retryCount < 2)
{
retryCount++;
context.Warning($"Fail to query container items under #/{_containerId}/{_containerPath}, Error: {ex.Message}");
context.Debug(ex.ToString());
}
var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(15));
context.Warning($"Back off {backOff.TotalSeconds} seconds before retry.");
await Task.Delay(backOff);
}
if (containerItems.Count == 0)
{
context.Output($"There is nothing under #/{_containerId}/{_containerPath}");
return;
}
// container items will include both folders, files and even file with zero size
// Create all required empty folders and emptry files, gather a list of files that we need to download from server.
int foldersCreated = 0;
int emptryFilesCreated = 0;
List<DownloadInfo> downloadFiles = new List<DownloadInfo>();
foreach (var item in containerItems.OrderBy(x => x.Path))
{
if (!item.Path.StartsWith(_containerPath, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentOutOfRangeException($"Item {item.Path} is not under #/{_containerId}/{_containerPath}");
}
var localRelativePath = item.Path.Substring(_containerPath.Length).TrimStart('/');
var localPath = Path.Combine(destination, localRelativePath);
if (item.ItemType == ContainerItemType.Folder)
{
context.Debug($"Ensure folder exists: {localPath}");
Directory.CreateDirectory(localPath);
foldersCreated++;
}
else if (item.ItemType == ContainerItemType.File)
{
if (item.FileLength == 0)
{
context.Debug($"Create empty file at: {localPath}");
var parentDirectory = Path.GetDirectoryName(localPath);
Directory.CreateDirectory(parentDirectory);
IOUtil.DeleteFile(localPath);
using (new FileStream(localPath, FileMode.Create))
{
}
emptryFilesCreated++;
}
else
{
context.Debug($"Prepare download {item.Path} to {localPath}");
downloadFiles.Add(new DownloadInfo(item.Path, localPath));
}
}
else
{
throw new NotSupportedException(item.ItemType.ToString());
}
}
if (foldersCreated > 0)
{
context.Output($"{foldersCreated} folders created.");
}
if (emptryFilesCreated > 0)
{
context.Output($"{emptryFilesCreated} empty files created.");
}
if (downloadFiles.Count == 0)
{
context.Output($"There is nothing to download");
return;
}
// Start multi-task to download all files.
using (_downloadCancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
// try download all files for the first time.
DownloadResult downloadResult = await ParallelDownloadAsync(context, downloadFiles.AsReadOnly(), Math.Min(downloadFiles.Count, Environment.ProcessorCount), _downloadCancellationTokenSource.Token);
if (downloadResult.FailedFiles.Count == 0)
{
// all files have been download succeed.
context.Output($"{downloadFiles.Count} files download succeed.");
return;
}
else
{
context.Output($"{downloadResult.FailedFiles.Count} files failed to download, retry these files after a minute.");
}
// Delay 1 min then retry failed files.
for (int timer = 60; timer > 0; timer -= 5)
{
context.Output($"Retry file download after {timer} seconds.");
await Task.Delay(TimeSpan.FromSeconds(5), _uploadCancellationTokenSource.Token);
}
// Retry download all failed files.
context.Output($"Start retry {downloadResult.FailedFiles.Count} failed files upload.");
DownloadResult retryDownloadResult = await ParallelDownloadAsync(context, downloadResult.FailedFiles.AsReadOnly(), Math.Min(downloadResult.FailedFiles.Count, Environment.ProcessorCount), _downloadCancellationTokenSource.Token);
if (retryDownloadResult.FailedFiles.Count == 0)
{
// all files have been download succeed after retry.
context.Output($"{downloadResult.FailedFiles} files download succeed after retry.");
return;
}
else
{
throw new Exception($"{retryDownloadResult.FailedFiles.Count} files failed to download even after retry.");
}
}
}
public async Task<long> CopyToContainerAsync(
RunnerActionPluginExecutionContext context,
String source,
CancellationToken cancellationToken)
{
//set maxConcurrentUploads up to 2 until figure out how to use WinHttpHandler.MaxConnectionsPerServer modify DefaultConnectionLimit
int maxConcurrentUploads = Math.Min(Environment.ProcessorCount, 2);
//context.Output($"Max Concurrent Uploads {maxConcurrentUploads}");
List<String> files;
if (File.Exists(source))
{
files = new List<String>() { source };
_sourceParentDirectory = Path.GetDirectoryName(source);
}
else
{
files = Directory.EnumerateFiles(source, "*", SearchOption.AllDirectories).ToList();
_sourceParentDirectory = source.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
}
context.Output($"Uploading {files.Count()} files");
using (_uploadCancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
// hook up reporting event from file container client.
_fileContainerHttpClient.UploadFileReportTrace += UploadFileTraceReportReceived;
_fileContainerHttpClient.UploadFileReportProgress += UploadFileProgressReportReceived;
try
{
// try upload all files for the first time.
UploadResult uploadResult = await ParallelUploadAsync(context, files, maxConcurrentUploads, _uploadCancellationTokenSource.Token);
if (uploadResult.RetryFiles.Count == 0)
{
// all files have been upload succeed.
context.Output("File upload complete.");
return uploadResult.TotalFileSizeUploaded;
}
else
{
context.Output($"{uploadResult.RetryFiles.Count} files failed to upload, retry these files after a minute.");
}
// Delay 1 min then retry failed files.
for (int timer = 60; timer > 0; timer -= 5)
{
context.Output($"Retry file upload after {timer} seconds.");
await Task.Delay(TimeSpan.FromSeconds(5), _uploadCancellationTokenSource.Token);
}
// Retry upload all failed files.
context.Output($"Start retry {uploadResult.RetryFiles.Count} failed files upload.");
UploadResult retryUploadResult = await ParallelUploadAsync(context, uploadResult.RetryFiles, maxConcurrentUploads, _uploadCancellationTokenSource.Token);
if (retryUploadResult.RetryFiles.Count == 0)
{
// all files have been upload succeed after retry.
context.Output("File upload complete after retry.");
return uploadResult.TotalFileSizeUploaded + retryUploadResult.TotalFileSizeUploaded;
}
else
{
throw new Exception("File upload failed even after retry.");
}
}
finally
{
_fileContainerHttpClient.UploadFileReportTrace -= UploadFileTraceReportReceived;
_fileContainerHttpClient.UploadFileReportProgress -= UploadFileProgressReportReceived;
}
}
}
private async Task<DownloadResult> ParallelDownloadAsync(RunnerActionPluginExecutionContext context, IReadOnlyList<DownloadInfo> files, int concurrentDownloads, CancellationToken token)
{
// return files that fail to download
var downloadResult = new DownloadResult();
// nothing needs to download
if (files.Count == 0)
{
return downloadResult;
}
// ensure the file download queue is empty.
if (!_fileDownloadQueue.IsEmpty)
{
throw new ArgumentOutOfRangeException(nameof(_fileDownloadQueue));
}
// enqueue file into download queue.
foreach (var file in files)
{
_fileDownloadQueue.Enqueue(file);
}
// Start download monitor task.
_downloadFilesProcessed = 0;
_downloadFinished = new TaskCompletionSource<int>();
Task downloadMonitor = DownloadReportingAsync(context, files.Count(), token);
// Start parallel download tasks.
List<Task<DownloadResult>> parallelDownloadingTasks = new List<Task<DownloadResult>>();
for (int downloader = 0; downloader < concurrentDownloads; downloader++)
{
parallelDownloadingTasks.Add(DownloadAsync(context, downloader, token));
}
// Wait for parallel download finish.
await Task.WhenAll(parallelDownloadingTasks);
foreach (var downloadTask in parallelDownloadingTasks)
{
// record all failed files.
downloadResult.AddDownloadResult(await downloadTask);
}
// Stop monitor task;
_downloadFinished.TrySetResult(0);
await downloadMonitor;
return downloadResult;
}
private async Task<UploadResult> ParallelUploadAsync(RunnerActionPluginExecutionContext context, IReadOnlyList<string> files, int concurrentUploads, CancellationToken token)
{
// return files that fail to upload and total artifact size
var uploadResult = new UploadResult();
// nothing needs to upload
if (files.Count == 0)
{
return uploadResult;
}
// ensure the file upload queue is empty.
if (!_fileUploadQueue.IsEmpty)
{
throw new ArgumentOutOfRangeException(nameof(_fileUploadQueue));
}
// enqueue file into upload queue.
foreach (var file in files)
{
_fileUploadQueue.Enqueue(file);
}
// Start upload monitor task.
_uploadFilesProcessed = 0;
_uploadFinished = new TaskCompletionSource<int>();
_fileUploadTraceLog.Clear();
_fileUploadProgressLog.Clear();
Task uploadMonitor = UploadReportingAsync(context, files.Count(), _uploadCancellationTokenSource.Token);
// Start parallel upload tasks.
List<Task<UploadResult>> parallelUploadingTasks = new List<Task<UploadResult>>();
for (int uploader = 0; uploader < concurrentUploads; uploader++)
{
parallelUploadingTasks.Add(UploadAsync(context, uploader, _uploadCancellationTokenSource.Token));
}
// Wait for parallel upload finish.
await Task.WhenAll(parallelUploadingTasks);
foreach (var uploadTask in parallelUploadingTasks)
{
// record all failed files.
uploadResult.AddUploadResult(await uploadTask);
}
// Stop monitor task;
_uploadFinished.TrySetResult(0);
await uploadMonitor;
return uploadResult;
}
private async Task<DownloadResult> DownloadAsync(RunnerActionPluginExecutionContext context, int downloaderId, CancellationToken token)
{
List<DownloadInfo> failedFiles = new List<DownloadInfo>();
Stopwatch downloadTimer = new Stopwatch();
while (_fileDownloadQueue.TryDequeue(out DownloadInfo fileToDownload))
{
token.ThrowIfCancellationRequested();
try
{
int retryCount = 0;
bool downloadFailed = false;
while (true)
{
try
{
context.Debug($"Start downloading file: '{fileToDownload.ItemPath}' (Downloader {downloaderId})");
downloadTimer.Restart();
using (FileStream fs = new FileStream(fileToDownload.LocalPath, FileMode.Create, FileAccess.Write, FileShare.None, bufferSize: _defaultFileStreamBufferSize, useAsync: true))
using (var downloadStream = await _fileContainerHttpClient.DownloadFileAsync(_containerId, fileToDownload.ItemPath, token, _projectId))
{
await downloadStream.CopyToAsync(fs, _defaultCopyBufferSize, token);
await fs.FlushAsync(token);
downloadTimer.Stop();
context.Debug($"File: '{fileToDownload.LocalPath}' took {downloadTimer.ElapsedMilliseconds} milliseconds to finish download (Downloader {downloaderId})");
break;
}
}
catch (OperationCanceledException) when (token.IsCancellationRequested)
{
context.Debug($"Download has been cancelled while downloading {fileToDownload.ItemPath}. (Downloader {downloaderId})");
throw;
}
catch (Exception ex)
{
retryCount++;
context.Warning($"Fail to download '{fileToDownload.ItemPath}', error: {ex.Message} (Downloader {downloaderId})");
context.Debug(ex.ToString());
}
if (retryCount < 3)
{
var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(10), TimeSpan.FromSeconds(30));
context.Warning($"Back off {backOff.TotalSeconds} seconds before retry. (Downloader {downloaderId})");
await Task.Delay(backOff);
}
else
{
// upload still failed after 3 tries.
downloadFailed = true;
break;
}
}
if (downloadFailed)
{
// tracking file that failed to download.
failedFiles.Add(fileToDownload);
}
Interlocked.Increment(ref _downloadFilesProcessed);
}
catch (Exception ex)
{
// We should never
context.Error($"Error '{ex.Message}' when downloading file '{fileToDownload}'. (Downloader {downloaderId})");
throw ex;
}
}
return new DownloadResult(failedFiles);
}
private async Task<UploadResult> UploadAsync(RunnerActionPluginExecutionContext context, int uploaderId, CancellationToken token)
{
List<string> failedFiles = new List<string>();
long uploadedSize = 0;
string fileToUpload;
Stopwatch uploadTimer = new Stopwatch();
while (_fileUploadQueue.TryDequeue(out fileToUpload))
{
token.ThrowIfCancellationRequested();
try
{
using (FileStream fs = File.Open(fileToUpload, FileMode.Open, FileAccess.Read, FileShare.Read))
{
string itemPath = (_containerPath.TrimEnd('/') + "/" + fileToUpload.Remove(0, _sourceParentDirectory.Length + 1)).Replace('\\', '/');
bool failAndExit = false;
try
{
uploadTimer.Restart();
using (HttpResponseMessage response = await _fileContainerHttpClient.UploadFileAsync(_containerId, itemPath, fs, _projectId, cancellationToken: token, chunkSize: 4 * 1024 * 1024))
{
if (response == null || response.StatusCode != HttpStatusCode.Created)
{
context.Output($"Unable to copy file to server StatusCode={response?.StatusCode}: {response?.ReasonPhrase}. Source file path: {fileToUpload}. Target server path: {itemPath}");
if (response?.StatusCode == HttpStatusCode.Conflict)
{
// fail upload task but continue with any other files
context.Error($"Error '{fileToUpload}' has already been uploaded.");
}
else if (_fileContainerHttpClient.IsFastFailResponse(response))
{
// Fast fail: we received an http status code where we should abandon our efforts
context.Output($"Cannot continue uploading files, so draining upload queue of {_fileUploadQueue.Count} items.");
DrainUploadQueue(context);
failedFiles.Clear();
failAndExit = true;
throw new UploadFailedException($"Critical failure uploading '{fileToUpload}'");
}
else
{
context.Debug($"Adding '{fileToUpload}' to retry list.");
failedFiles.Add(fileToUpload);
}
throw new UploadFailedException($"Http failure response '{response?.StatusCode}': '{response?.ReasonPhrase}' while uploading '{fileToUpload}'");
}
uploadTimer.Stop();
context.Debug($"File: '{fileToUpload}' took {uploadTimer.ElapsedMilliseconds} milliseconds to finish upload");
uploadedSize += fs.Length;
OutputLogForFile(context, fileToUpload, $"Detail upload trace for file: {itemPath}", context.Debug);
}
}
catch (OperationCanceledException) when (token.IsCancellationRequested)
{
context.Output($"File upload has been cancelled during upload file: '{fileToUpload}'.");
throw;
}
catch (Exception ex)
{
context.Output($"Fail to upload '{fileToUpload}' due to '{ex.Message}'.");
context.Output(ex.ToString());
OutputLogForFile(context, fileToUpload, $"Detail upload trace for file that fail to upload: {itemPath}", context.Output);
if (failAndExit)
{
context.Debug("Exiting upload.");
throw;
}
}
}
Interlocked.Increment(ref _uploadFilesProcessed);
}
catch (Exception ex)
{
context.Output($"File error '{ex.Message}' when uploading file '{fileToUpload}'.");
throw ex;
}
}
return new UploadResult(failedFiles, uploadedSize);
}
private async Task UploadReportingAsync(RunnerActionPluginExecutionContext context, int totalFiles, CancellationToken token)
{
int traceInterval = 0;
while (!_uploadFinished.Task.IsCompleted && !token.IsCancellationRequested)
{
bool hasDetailProgress = false;
foreach (var file in _fileUploadProgressLog)
{
string message;
while (file.Value.TryDequeue(out message))
{
hasDetailProgress = true;
context.Output(message);
}
}
// trace total file progress every 25 seconds when there is no file level detail progress
if (++traceInterval % 2 == 0 && !hasDetailProgress)
{
context.Output($"Total file: {totalFiles} ---- Processed file: {_uploadFilesProcessed} ({(_uploadFilesProcessed * 100) / totalFiles}%)");
}
await Task.WhenAny(_uploadFinished.Task, Task.Delay(5000, token));
}
}
private async Task DownloadReportingAsync(RunnerActionPluginExecutionContext context, int totalFiles, CancellationToken token)
{
int traceInterval = 0;
while (!_downloadFinished.Task.IsCompleted && !token.IsCancellationRequested)
{
// trace total file progress every 10 seconds when there is no file level detail progress
if (++traceInterval % 2 == 0)
{
context.Output($"Total file: {totalFiles} ---- Downloaded file: {_downloadFilesProcessed} ({(_downloadFilesProcessed * 100) / totalFiles}%)");
}
await Task.WhenAny(_downloadFinished.Task, Task.Delay(5000, token));
}
}
private void DrainUploadQueue(RunnerActionPluginExecutionContext context)
{
while (_fileUploadQueue.TryDequeue(out string fileToUpload))
{
context.Debug($"Clearing upload queue: '{fileToUpload}'");
Interlocked.Increment(ref _uploadFilesProcessed);
}
}
private void OutputLogForFile(RunnerActionPluginExecutionContext context, string itemPath, string logDescription, Action<string> log)
{
// output detail upload trace for the file.
ConcurrentQueue<string> logQueue;
if (_fileUploadTraceLog.TryGetValue(itemPath, out logQueue))
{
log(logDescription);
string message;
while (logQueue.TryDequeue(out message))
{
log(message);
}
}
}
private void UploadFileTraceReportReceived(object sender, ReportTraceEventArgs e)
{
ConcurrentQueue<string> logQueue = _fileUploadTraceLog.GetOrAdd(e.File, new ConcurrentQueue<string>());
logQueue.Enqueue(e.Message);
}
private void UploadFileProgressReportReceived(object sender, ReportProgressEventArgs e)
{
ConcurrentQueue<string> progressQueue = _fileUploadProgressLog.GetOrAdd(e.File, new ConcurrentQueue<string>());
progressQueue.Enqueue($"Uploading '{e.File}' ({(e.CurrentChunk * 100) / e.TotalChunks}%)");
}
}
public class UploadResult
{
public UploadResult()
{
RetryFiles = new List<string>();
TotalFileSizeUploaded = 0;
}
public UploadResult(List<string> retryFiles, long totalFileSizeUploaded)
{
RetryFiles = retryFiles ?? new List<string>();
TotalFileSizeUploaded = totalFileSizeUploaded;
}
public List<string> RetryFiles { get; set; }
public long TotalFileSizeUploaded { get; set; }
public void AddUploadResult(UploadResult resultToAdd)
{
this.RetryFiles.AddRange(resultToAdd.RetryFiles);
this.TotalFileSizeUploaded += resultToAdd.TotalFileSizeUploaded;
}
}
public class DownloadInfo
{
public DownloadInfo(string itemPath, string localPath)
{
this.ItemPath = itemPath;
this.LocalPath = localPath;
}
public string ItemPath { get; set; }
public string LocalPath { get; set; }
}
public class DownloadResult
{
public DownloadResult()
{
FailedFiles = new List<DownloadInfo>();
}
public DownloadResult(List<DownloadInfo> failedFiles)
{
FailedFiles = failedFiles;
}
public List<DownloadInfo> FailedFiles { get; set; }
public void AddDownloadResult(DownloadResult resultToAdd)
{
this.FailedFiles.AddRange(resultToAdd.FailedFiles);
}
}
public class UploadFailedException : Exception
{
public UploadFailedException()
: base()
{ }
public UploadFailedException(string message)
: base(message)
{ }
public UploadFailedException(string message, Exception inner)
: base(message, inner)
{ }
}
}