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SelfUpdater.cs
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using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net.Http;
using System.Reflection;
using System.Security.Cryptography;
using System.Threading;
using System.Threading.Tasks;
using GitHub.DistributedTask.WebApi;
using GitHub.Runner.Common;
using GitHub.Runner.Common.Util;
using GitHub.Runner.Sdk;
using GitHub.Services.Common;
using GitHub.Services.WebApi;
namespace GitHub.Runner.Listener
{
[ServiceLocator(Default = typeof(SelfUpdater))]
public interface ISelfUpdater : IRunnerService
{
bool Busy { get; }
Task<bool> SelfUpdate(AgentRefreshMessage updateMessage, IJobDispatcher jobDispatcher, bool restartInteractiveRunner, CancellationToken token);
}
public class SelfUpdater : RunnerService, ISelfUpdater
{
private static string _packageType = "agent";
private static string _platform = BuildConstants.RunnerPackage.PackageName;
private static string _dotnetRuntime = "dotnetRuntime";
private static string _externals = "externals";
private readonly Dictionary<string, string> _contentHashes = new();
private PackageMetadata _targetPackage;
private ITerminal _terminal;
private IRunnerServer _runnerServer;
private int _poolId;
private int _agentId;
private readonly ConcurrentQueue<string> _updateTrace = new();
private Task _cloneAndCalculateContentHashTask;
private string _dotnetRuntimeCloneDirectory;
private string _externalsCloneDirectory;
public bool Busy { get; private set; }
public override void Initialize(IHostContext hostContext)
{
base.Initialize(hostContext);
_terminal = hostContext.GetService<ITerminal>();
_runnerServer = HostContext.GetService<IRunnerServer>();
var configStore = HostContext.GetService<IConfigurationStore>();
var settings = configStore.GetSettings();
_poolId = settings.PoolId;
_agentId = settings.AgentId;
_dotnetRuntimeCloneDirectory = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Work), "__dotnet_runtime__");
_externalsCloneDirectory = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Work), "__externals__");
}
public async Task<bool> SelfUpdate(AgentRefreshMessage updateMessage, IJobDispatcher jobDispatcher, bool restartInteractiveRunner, CancellationToken token)
{
Busy = true;
try
{
var totalUpdateTime = Stopwatch.StartNew();
// Copy dotnet runtime and externals of current runner to a temp folder
// So we can re-use them with trimmed runner package, if possible.
// This process is best effort, if we can't use trimmed runner package,
// we will just go with the full package.
var linkedTokenSource = CancellationTokenSource.CreateLinkedTokenSource(token);
_cloneAndCalculateContentHashTask = CloneAndCalculateAssetsHash(_dotnetRuntimeCloneDirectory, _externalsCloneDirectory, linkedTokenSource.Token);
if (!await UpdateNeeded(updateMessage.TargetVersion, token))
{
Trace.Info($"Can't find available update package.");
return false;
}
Trace.Info($"An update is available.");
_updateTrace.Enqueue($"RunnerPlatform: {_targetPackage.Platform}");
// Print console line that warn user not shutdown runner.
await UpdateRunnerUpdateStateAsync("Runner update in progress, do not shutdown runner.");
await UpdateRunnerUpdateStateAsync($"Downloading {_targetPackage.Version} runner");
if (_targetPackage.TrimmedPackages?.Count > 0)
{
// wait for cloning assets task to finish only if we have trimmed packages
await _cloneAndCalculateContentHashTask;
}
else
{
linkedTokenSource.Cancel();
try
{
await _cloneAndCalculateContentHashTask;
}
catch (Exception ex)
{
Trace.Info($"Ingore errors after cancelling cloning assets task: {ex}");
}
}
await DownloadLatestRunner(token, updateMessage.TargetVersion);
Trace.Info($"Download latest runner and unzip into runner root.");
// wait till all running job finish
await UpdateRunnerUpdateStateAsync("Waiting for current job finish running.");
await jobDispatcher.WaitAsync(token);
Trace.Info($"All running job has exited.");
// We need to keep runner backup around for macOS until we fixed https://github.com/actions/runner/issues/743
// delete runner backup
var stopWatch = Stopwatch.StartNew();
DeletePreviousVersionRunnerBackup(token);
Trace.Info($"Delete old version runner backup.");
stopWatch.Stop();
// generate update script from template
_updateTrace.Enqueue($"DeleteRunnerBackupTime: {stopWatch.ElapsedMilliseconds}ms");
await UpdateRunnerUpdateStateAsync("Generate and execute update script.");
string updateScript = GenerateUpdateScript(restartInteractiveRunner);
Trace.Info($"Generate update script into: {updateScript}");
// For L0, we will skip execute update script.
if (string.IsNullOrEmpty(Environment.GetEnvironmentVariable("_GITHUB_ACTION_EXECUTE_UPDATE_SCRIPT")))
{
string flagFile = "update.finished";
IOUtil.DeleteFile(flagFile);
// kick off update script
Process invokeScript = new();
#if OS_WINDOWS
invokeScript.StartInfo.FileName = WhichUtil.Which("cmd.exe", trace: Trace);
invokeScript.StartInfo.Arguments = $"/c \"{updateScript}\"";
#elif (OS_OSX || OS_LINUX)
invokeScript.StartInfo.FileName = WhichUtil.Which("bash", trace: Trace);
invokeScript.StartInfo.Arguments = $"\"{updateScript}\"";
#endif
invokeScript.Start();
Trace.Info($"Update script start running");
}
totalUpdateTime.Stop();
_updateTrace.Enqueue($"TotalUpdateTime: {totalUpdateTime.ElapsedMilliseconds}ms");
await UpdateRunnerUpdateStateAsync("Runner will exit shortly for update, should be back online within 10 seconds.");
return true;
}
catch (Exception ex)
{
_updateTrace.Enqueue(ex.ToString());
throw;
}
finally
{
await UpdateRunnerUpdateStateAsync("Runner update process finished.");
Busy = false;
}
}
private async Task<bool> UpdateNeeded(string targetVersion, CancellationToken token)
{
// when talk to old version server, always prefer latest package.
// old server won't send target version as part of update message.
if (string.IsNullOrEmpty(targetVersion))
{
var packages = await _runnerServer.GetPackagesAsync(_packageType, _platform, 1, true, token);
if (packages == null || packages.Count == 0)
{
Trace.Info($"There is no package for {_packageType} and {_platform}.");
return false;
}
_targetPackage = packages.FirstOrDefault();
}
else
{
_targetPackage = await _runnerServer.GetPackageAsync(_packageType, _platform, targetVersion, true, token);
if (_targetPackage == null)
{
Trace.Info($"There is no package for {_packageType} and {_platform} with version {targetVersion}.");
return false;
}
}
Trace.Info($"Version '{_targetPackage.Version}' of '{_targetPackage.Type}' package available in server.");
PackageVersion serverVersion = new(_targetPackage.Version);
Trace.Info($"Current running runner version is {BuildConstants.RunnerPackage.Version}");
PackageVersion runnerVersion = new(BuildConstants.RunnerPackage.Version);
return serverVersion.CompareTo(runnerVersion) > 0;
}
/// <summary>
/// _work
/// \_update
/// \bin
/// \externals
/// \run.sh
/// \run.cmd
/// \package.zip //temp download .zip/.tar.gz
/// </summary>
/// <param name="token"></param>
/// <returns></returns>
private async Task DownloadLatestRunner(CancellationToken token, string targetVersion)
{
string latestRunnerDirectory = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Work), Constants.Path.UpdateDirectory);
IOUtil.DeleteDirectory(latestRunnerDirectory, token);
Directory.CreateDirectory(latestRunnerDirectory);
string archiveFile = null;
var packageDownloadUrl = _targetPackage.DownloadUrl;
var packageHashValue = _targetPackage.HashValue;
var runtimeTrimmed = false;
var externalsTrimmed = false;
var fallbackToFullPackage = false;
// Only try trimmed package if sever sends them and we have calculated hash value of the current runtime/externals.
if (_contentHashes.Count == 2 &&
_contentHashes.ContainsKey(_dotnetRuntime) &&
_contentHashes.ContainsKey(_externals) &&
_targetPackage.TrimmedPackages?.Count > 0)
{
Trace.Info($"Current runner content hash: {StringUtil.ConvertToJson(_contentHashes)}");
Trace.Info($"Trimmed packages info from service: {StringUtil.ConvertToJson(_targetPackage.TrimmedPackages)}");
// Try to see whether we can use any size trimmed down package to speed up runner updates.
foreach (var trimmedPackage in _targetPackage.TrimmedPackages)
{
if (trimmedPackage.TrimmedContents.Count == 2 &&
trimmedPackage.TrimmedContents.TryGetValue(_dotnetRuntime, out var trimmedRuntimeHash) &&
trimmedRuntimeHash == _contentHashes[_dotnetRuntime] &&
trimmedPackage.TrimmedContents.TryGetValue(_externals, out var trimmedExternalsHash) &&
trimmedExternalsHash == _contentHashes[_externals])
{
Trace.Info($"Use trimmed (runtime+externals) package '{trimmedPackage.DownloadUrl}' to update runner.");
packageDownloadUrl = trimmedPackage.DownloadUrl;
packageHashValue = trimmedPackage.HashValue;
runtimeTrimmed = true;
externalsTrimmed = true;
break;
}
else if (trimmedPackage.TrimmedContents.Count == 1 &&
trimmedPackage.TrimmedContents.TryGetValue(_externals, out trimmedExternalsHash) &&
trimmedExternalsHash == _contentHashes[_externals])
{
Trace.Info($"Use trimmed (externals) package '{trimmedPackage.DownloadUrl}' to update runner.");
packageDownloadUrl = trimmedPackage.DownloadUrl;
packageHashValue = trimmedPackage.HashValue;
externalsTrimmed = true;
break;
}
else
{
Trace.Info($"Can't use trimmed package from '{trimmedPackage.DownloadUrl}' since the current runner does not carry those trimmed content (Hash mismatch).");
}
}
}
_updateTrace.Enqueue($"DownloadUrl: {packageDownloadUrl}");
_updateTrace.Enqueue($"RuntimeTrimmed: {runtimeTrimmed}");
_updateTrace.Enqueue($"ExternalsTrimmed: {externalsTrimmed}");
try
{
#if DEBUG
// Much of the update process (targetVersion, archive) is server-side, this is a way to control it from here for testing specific update scenarios
// Add files like 'runner2.281.2.tar.gz' or 'runner2.283.0.zip' (depending on your platform) to your runner root folder
// Note that runners still need to be older than the server's runner version in order to receive an 'AgentRefreshMessage' and trigger this update
// Wrapped in #if DEBUG as this should not be in the RELEASE build
if (StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_IS_MOCK_UPDATE")))
{
var waitForDebugger = StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_IS_MOCK_UPDATE_WAIT_FOR_DEBUGGER"));
if (waitForDebugger)
{
int waitInSeconds = 20;
while (!Debugger.IsAttached && waitInSeconds-- > 0)
{
await Task.Delay(1000);
}
Debugger.Break();
}
if (_targetPackage.Platform.StartsWith("win"))
{
archiveFile = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"runner{targetVersion}.zip");
}
else
{
archiveFile = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"runner{targetVersion}.tar.gz");
}
if (File.Exists(archiveFile))
{
_updateTrace.Enqueue($"Mocking update with file: '{archiveFile}' and targetVersion: '{targetVersion}', nothing is downloaded");
_terminal.WriteLine($"Mocking update with file: '{archiveFile}' and targetVersion: '{targetVersion}', nothing is downloaded");
}
else
{
archiveFile = null;
_terminal.WriteLine($"Mock runner archive not found at {archiveFile} for target version {targetVersion}, proceeding with download instead");
_updateTrace.Enqueue($"Mock runner archive not found at {archiveFile} for target version {targetVersion}, proceeding with download instead");
}
}
#endif
// archiveFile is not null only if we mocked it above
if (string.IsNullOrEmpty(archiveFile))
{
archiveFile = await DownLoadRunner(latestRunnerDirectory, packageDownloadUrl, packageHashValue, token);
if (string.IsNullOrEmpty(archiveFile))
{
throw new TaskCanceledException($"Runner package '{packageDownloadUrl}' failed after {Constants.RunnerDownloadRetryMaxAttempts} download attempts");
}
await ValidateRunnerHash(archiveFile, packageHashValue);
}
await ExtractRunnerPackage(archiveFile, latestRunnerDirectory, token);
}
catch (Exception ex) when (runtimeTrimmed || externalsTrimmed)
{
// if anything failed when we use trimmed package (download/validatehase/extract), try again with the full runner package.
Trace.Error($"Fail to download latest runner using trimmed package: {ex}");
fallbackToFullPackage = true;
}
finally
{
try
{
// delete .zip file
if (!string.IsNullOrEmpty(archiveFile) && File.Exists(archiveFile))
{
Trace.Verbose("Deleting latest runner package zip: {0}", archiveFile);
IOUtil.DeleteFile(archiveFile);
}
}
catch (Exception ex)
{
//it is not critical if we fail to delete the .zip file
Trace.Warning("Failed to delete runner package zip '{0}'. Exception: {1}", archiveFile, ex);
}
}
var trimmedPackageRestoreTasks = new List<Task<bool>>();
if (!fallbackToFullPackage)
{
// Skip restoring externals and runtime if we are going to fullback to the full package.
if (externalsTrimmed)
{
trimmedPackageRestoreTasks.Add(RestoreTrimmedExternals(latestRunnerDirectory, token));
}
if (runtimeTrimmed)
{
trimmedPackageRestoreTasks.Add(RestoreTrimmedDotnetRuntime(latestRunnerDirectory, token));
}
}
if (trimmedPackageRestoreTasks.Count > 0)
{
var restoreResults = await Task.WhenAll(trimmedPackageRestoreTasks);
if (restoreResults.Any(x => x == false))
{
// if any of the restore failed, fallback to full package.
fallbackToFullPackage = true;
}
}
if (fallbackToFullPackage)
{
Trace.Error("Something wrong with the trimmed runner package, failback to use the full package for runner updates.");
_updateTrace.Enqueue($"FallbackToFullPackage: {fallbackToFullPackage}");
IOUtil.DeleteDirectory(latestRunnerDirectory, token);
Directory.CreateDirectory(latestRunnerDirectory);
packageDownloadUrl = _targetPackage.DownloadUrl;
packageHashValue = _targetPackage.HashValue;
_updateTrace.Enqueue($"DownloadUrl: {packageDownloadUrl}");
try
{
archiveFile = await DownLoadRunner(latestRunnerDirectory, packageDownloadUrl, packageHashValue, token);
if (string.IsNullOrEmpty(archiveFile))
{
throw new TaskCanceledException($"Runner package '{packageDownloadUrl}' failed after {Constants.RunnerDownloadRetryMaxAttempts} download attempts");
}
await ValidateRunnerHash(archiveFile, packageHashValue);
await ExtractRunnerPackage(archiveFile, latestRunnerDirectory, token);
}
finally
{
try
{
// delete .zip file
if (!string.IsNullOrEmpty(archiveFile) && File.Exists(archiveFile))
{
Trace.Verbose("Deleting latest runner package zip: {0}", archiveFile);
IOUtil.DeleteFile(archiveFile);
}
}
catch (Exception ex)
{
//it is not critical if we fail to delete the .zip file
Trace.Warning("Failed to delete runner package zip '{0}'. Exception: {1}", archiveFile, ex);
}
}
}
await CopyLatestRunnerToRoot(latestRunnerDirectory, token);
}
private async Task<string> DownLoadRunner(string downloadDirectory, string packageDownloadUrl, string packageHashValue, CancellationToken token)
{
var stopWatch = Stopwatch.StartNew();
int runnerSuffix = 1;
string archiveFile = null;
bool downloadSucceeded = false;
// Download the runner, using multiple attempts in order to be resilient against any networking/CDN issues
for (int attempt = 1; attempt <= Constants.RunnerDownloadRetryMaxAttempts; attempt++)
{
// Generate an available package name, and do our best effort to clean up stale local zip files
while (true)
{
if (_targetPackage.Platform.StartsWith("win"))
{
archiveFile = Path.Combine(downloadDirectory, $"runner{runnerSuffix}.zip");
}
else
{
archiveFile = Path.Combine(downloadDirectory, $"runner{runnerSuffix}.tar.gz");
}
try
{
// delete .zip file
if (!string.IsNullOrEmpty(archiveFile) && File.Exists(archiveFile))
{
Trace.Verbose("Deleting latest runner package zip '{0}'", archiveFile);
IOUtil.DeleteFile(archiveFile);
}
break;
}
catch (Exception ex)
{
// couldn't delete the file for whatever reason, so generate another name
Trace.Warning("Failed to delete runner package zip '{0}'. Exception: {1}", archiveFile, ex);
runnerSuffix++;
}
}
// Allow a 15-minute package download timeout, which is good enough to update the runner from a 1 Mbit/s ADSL connection.
if (!int.TryParse(Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_DOWNLOAD_TIMEOUT") ?? string.Empty, out int timeoutSeconds))
{
timeoutSeconds = 15 * 60;
}
Trace.Info($"Attempt {attempt}: save latest runner into {archiveFile}.");
using (var downloadTimeout = new CancellationTokenSource(TimeSpan.FromSeconds(timeoutSeconds)))
using (var downloadCts = CancellationTokenSource.CreateLinkedTokenSource(downloadTimeout.Token, token))
{
try
{
Trace.Info($"Download runner: begin download");
long downloadSize = 0;
//open zip stream in async mode
using (HttpClient httpClient = new(HostContext.CreateHttpClientHandler()))
{
if (!string.IsNullOrEmpty(_targetPackage.Token))
{
Trace.Info($"Adding authorization token ({_targetPackage.Token.Length} chars)");
httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _targetPackage.Token);
}
Trace.Info($"Downloading {packageDownloadUrl}");
using (FileStream fs = new(archiveFile, FileMode.Create, FileAccess.Write, FileShare.None, bufferSize: 4096, useAsync: true))
using (Stream result = await httpClient.GetStreamAsync(packageDownloadUrl))
{
//81920 is the default used by System.IO.Stream.CopyTo and is under the large object heap threshold (85k).
await result.CopyToAsync(fs, 81920, downloadCts.Token);
await fs.FlushAsync(downloadCts.Token);
downloadSize = fs.Length;
}
}
Trace.Info($"Download runner: finished download");
downloadSucceeded = true;
stopWatch.Stop();
_updateTrace.Enqueue($"PackageDownloadTime: {stopWatch.ElapsedMilliseconds}ms");
_updateTrace.Enqueue($"Attempts: {attempt}");
_updateTrace.Enqueue($"PackageSize: {downloadSize / 1024 / 1024}MB");
break;
}
catch (OperationCanceledException) when (token.IsCancellationRequested)
{
Trace.Info($"Runner download has been cancelled.");
throw;
}
catch (Exception ex)
{
if (downloadCts.Token.IsCancellationRequested)
{
Trace.Warning($"Runner download has timed out after {timeoutSeconds} seconds");
}
Trace.Warning($"Failed to get package '{archiveFile}' from '{packageDownloadUrl}'. Exception {ex}");
}
}
}
if (downloadSucceeded)
{
return archiveFile;
}
else
{
return null;
}
}
private async Task ValidateRunnerHash(string archiveFile, string packageHashValue)
{
var stopWatch = Stopwatch.StartNew();
// Validate Hash Matches if it is provided
using (FileStream stream = File.OpenRead(archiveFile))
{
if (!string.IsNullOrEmpty(packageHashValue))
{
using (SHA256 sha256 = SHA256.Create())
{
byte[] srcHashBytes = await sha256.ComputeHashAsync(stream);
var hash = PrimitiveExtensions.ConvertToHexString(srcHashBytes);
if (hash != packageHashValue)
{
// Hash did not match, we can't recover from this, just throw
throw new Exception($"Computed runner hash {hash} did not match expected Runner Hash {packageHashValue} for {archiveFile}");
}
stopWatch.Stop();
Trace.Info($"Validated Runner Hash matches {archiveFile} : {packageHashValue}");
_updateTrace.Enqueue($"ValidateHashTime: {stopWatch.ElapsedMilliseconds}ms");
}
}
}
}
private async Task ExtractRunnerPackage(string archiveFile, string extractDirectory, CancellationToken token)
{
var stopWatch = Stopwatch.StartNew();
if (archiveFile.EndsWith(".zip", StringComparison.OrdinalIgnoreCase))
{
ZipFile.ExtractToDirectory(archiveFile, extractDirectory);
}
else if (archiveFile.EndsWith(".tar.gz", StringComparison.OrdinalIgnoreCase))
{
string tar = WhichUtil.Which("tar", trace: Trace);
if (string.IsNullOrEmpty(tar))
{
throw new NotSupportedException($"tar -xzf");
}
// tar -xzf
using (var processInvoker = HostContext.CreateService<IProcessInvoker>())
{
processInvoker.OutputDataReceived += new EventHandler<ProcessDataReceivedEventArgs>((sender, args) =>
{
if (!string.IsNullOrEmpty(args.Data))
{
Trace.Info(args.Data);
}
});
processInvoker.ErrorDataReceived += new EventHandler<ProcessDataReceivedEventArgs>((sender, args) =>
{
if (!string.IsNullOrEmpty(args.Data))
{
Trace.Error(args.Data);
}
});
int exitCode = await processInvoker.ExecuteAsync(extractDirectory, tar, $"-xzf \"{archiveFile}\"", null, token);
if (exitCode != 0)
{
throw new NotSupportedException($"Can't use 'tar -xzf' to extract archive file: {archiveFile}. return code: {exitCode}.");
}
}
}
else
{
throw new NotSupportedException($"{archiveFile}");
}
stopWatch.Stop();
Trace.Info($"Finished getting latest runner package at: {extractDirectory}.");
_updateTrace.Enqueue($"PackageExtractTime: {stopWatch.ElapsedMilliseconds}ms");
}
private Task CopyLatestRunnerToRoot(string latestRunnerDirectory, CancellationToken token)
{
var stopWatch = Stopwatch.StartNew();
// copy latest runner into runner root folder
// copy bin from _work/_update -> bin.version under root
string binVersionDir = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"{Constants.Path.BinDirectory}.{_targetPackage.Version}");
Directory.CreateDirectory(binVersionDir);
Trace.Info($"Copy {Path.Combine(latestRunnerDirectory, Constants.Path.BinDirectory)} to {binVersionDir}.");
IOUtil.CopyDirectory(Path.Combine(latestRunnerDirectory, Constants.Path.BinDirectory), binVersionDir, token);
// copy externals from _work/_update -> externals.version under root
string externalsVersionDir = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"{Constants.Path.ExternalsDirectory}.{_targetPackage.Version}");
Directory.CreateDirectory(externalsVersionDir);
Trace.Info($"Copy {Path.Combine(latestRunnerDirectory, Constants.Path.ExternalsDirectory)} to {externalsVersionDir}.");
IOUtil.CopyDirectory(Path.Combine(latestRunnerDirectory, Constants.Path.ExternalsDirectory), externalsVersionDir, token);
// copy and replace all .sh/.cmd files
Trace.Info($"Copy any remaining .sh/.cmd files into runner root.");
foreach (FileInfo file in new DirectoryInfo(latestRunnerDirectory).GetFiles() ?? new FileInfo[0])
{
string destination = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), file.Name);
// Removing the file instead of just trying to overwrite it works around permissions issues on linux.
// https://github.com/actions/runner/issues/981
Trace.Info($"Copy {file.FullName} to {destination}");
IOUtil.DeleteFile(destination);
file.CopyTo(destination, true);
}
stopWatch.Stop();
_updateTrace.Enqueue($"CopyRunnerToRootTime: {stopWatch.ElapsedMilliseconds}ms");
return Task.CompletedTask;
}
private void DeletePreviousVersionRunnerBackup(CancellationToken token)
{
// delete previous backup runner (back compat, can be remove after serval sprints)
// bin.bak.2.99.0
// externals.bak.2.99.0
foreach (string existBackUp in Directory.GetDirectories(HostContext.GetDirectory(WellKnownDirectory.Root), "*.bak.*"))
{
Trace.Info($"Delete existing runner backup at {existBackUp}.");
try
{
IOUtil.DeleteDirectory(existBackUp, token);
}
catch (Exception ex) when (!(ex is OperationCanceledException))
{
Trace.Error(ex);
Trace.Info($"Catch exception during delete backup folder {existBackUp}, ignore this error try delete the backup folder on next auto-update.");
}
}
// delete old bin.2.99.0 folder, only leave the current version and the latest download version
var allBinDirs = Directory.GetDirectories(HostContext.GetDirectory(WellKnownDirectory.Root), "bin.*");
if (allBinDirs.Length > 2)
{
// there are more than 2 bin.version folder.
// delete older bin.version folders.
foreach (var oldBinDir in allBinDirs)
{
if (string.Equals(oldBinDir, Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"bin"), StringComparison.OrdinalIgnoreCase) ||
string.Equals(oldBinDir, Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"bin.{BuildConstants.RunnerPackage.Version}"), StringComparison.OrdinalIgnoreCase) ||
string.Equals(oldBinDir, Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"bin.{_targetPackage.Version}"), StringComparison.OrdinalIgnoreCase))
{
// skip for current runner version
continue;
}
Trace.Info($"Delete runner bin folder's backup at {oldBinDir}.");
try
{
IOUtil.DeleteDirectory(oldBinDir, token);
}
catch (Exception ex) when (!(ex is OperationCanceledException))
{
Trace.Error(ex);
Trace.Info($"Catch exception during delete backup folder {oldBinDir}, ignore this error try delete the backup folder on next auto-update.");
}
}
}
// delete old externals.2.99.0 folder, only leave the current version and the latest download version
var allExternalsDirs = Directory.GetDirectories(HostContext.GetDirectory(WellKnownDirectory.Root), "externals.*");
if (allExternalsDirs.Length > 2)
{
// there are more than 2 externals.version folder.
// delete older externals.version folders.
foreach (var oldExternalDir in allExternalsDirs)
{
if (string.Equals(oldExternalDir, Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"externals"), StringComparison.OrdinalIgnoreCase) ||
string.Equals(oldExternalDir, Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"externals.{BuildConstants.RunnerPackage.Version}"), StringComparison.OrdinalIgnoreCase) ||
string.Equals(oldExternalDir, Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), $"externals.{_targetPackage.Version}"), StringComparison.OrdinalIgnoreCase))
{
// skip for current runner version
continue;
}
Trace.Info($"Delete runner externals folder's backup at {oldExternalDir}.");
try
{
IOUtil.DeleteDirectory(oldExternalDir, token);
}
catch (Exception ex) when (!(ex is OperationCanceledException))
{
Trace.Error(ex);
Trace.Info($"Catch exception during delete backup folder {oldExternalDir}, ignore this error try delete the backup folder on next auto-update.");
}
}
}
}
private string GenerateUpdateScript(bool restartInteractiveRunner)
{
int processId = Process.GetCurrentProcess().Id;
string updateLog = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Diag), $"SelfUpdate-{DateTime.UtcNow.ToString("yyyyMMdd-HHmmss")}.log");
string runnerRoot = HostContext.GetDirectory(WellKnownDirectory.Root);
#if OS_WINDOWS
string templateName = "update.cmd.template";
#else
string templateName = "update.sh.template";
#endif
string templatePath = Path.Combine(runnerRoot, $"bin.{_targetPackage.Version}", templateName);
string template = File.ReadAllText(templatePath);
template = template.Replace("_PROCESS_ID_", processId.ToString());
template = template.Replace("_RUNNER_PROCESS_NAME_", $"Runner.Listener{IOUtil.ExeExtension}");
template = template.Replace("_ROOT_FOLDER_", runnerRoot);
template = template.Replace("_EXIST_RUNNER_VERSION_", BuildConstants.RunnerPackage.Version);
template = template.Replace("_DOWNLOAD_RUNNER_VERSION_", _targetPackage.Version);
template = template.Replace("_UPDATE_LOG_", updateLog);
template = template.Replace("_RESTART_INTERACTIVE_RUNNER_", restartInteractiveRunner ? "1" : "0");
#if OS_WINDOWS
string scriptName = "_update.cmd";
#else
string scriptName = "_update.sh";
#endif
string updateScript = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Work), scriptName);
if (File.Exists(updateScript))
{
IOUtil.DeleteFile(updateScript);
}
File.WriteAllText(updateScript, template);
return updateScript;
}
private async Task UpdateRunnerUpdateStateAsync(string currentState)
{
_terminal.WriteLine(currentState);
var traces = new List<string>();
while (_updateTrace.TryDequeue(out var trace))
{
traces.Add(trace);
}
if (traces.Count > 0)
{
foreach (var trace in traces)
{
Trace.Info(trace);
}
}
try
{
await _runnerServer.UpdateAgentUpdateStateAsync(_poolId, _agentId, currentState, string.Join(Environment.NewLine, traces));
_updateTrace.Clear();
}
catch (VssResourceNotFoundException)
{
// ignore VssResourceNotFoundException, this exception means the runner is configured against a old server that doesn't support report runner update detail.
Trace.Info($"Catch VssResourceNotFoundException during report update state, ignore this error for backcompat.");
}
catch (Exception ex)
{
Trace.Error(ex);
Trace.Info($"Catch exception during report update state, ignore this error and continue auto-update.");
}
}
private async Task<bool> RestoreTrimmedExternals(string downloadDirectory, CancellationToken token)
{
// Copy the current runner's externals if we are using a externals trimmed package
// Execute the node.js to make sure the copied externals is working.
var stopWatch = Stopwatch.StartNew();
try
{
Trace.Info($"Copy {_externalsCloneDirectory} to {Path.Combine(downloadDirectory, Constants.Path.ExternalsDirectory)}.");
IOUtil.CopyDirectory(_externalsCloneDirectory, Path.Combine(downloadDirectory, Constants.Path.ExternalsDirectory), token);
// try run node.js to see if current node.js works fine after copy over to new location.
var nodeVersions = NodeUtil.BuiltInNodeVersions;
foreach (var nodeVersion in nodeVersions)
{
var newNodeBinary = Path.Combine(downloadDirectory, Constants.Path.ExternalsDirectory, nodeVersion, "bin", $"node{IOUtil.ExeExtension}");
if (File.Exists(newNodeBinary))
{
using (var p = HostContext.CreateService<IProcessInvoker>())
{
var outputs = "";
p.ErrorDataReceived += (_, data) =>
{
if (!string.IsNullOrEmpty(data.Data))
{
Trace.Error(data.Data);
}
};
p.OutputDataReceived += (_, data) =>
{
if (!string.IsNullOrEmpty(data.Data))
{
Trace.Info(data.Data);
outputs = data.Data;
}
};
var exitCode = await p.ExecuteAsync(HostContext.GetDirectory(WellKnownDirectory.Root), newNodeBinary, $"-e \"console.log('{nameof(RestoreTrimmedExternals)}')\"", null, token);
if (exitCode != 0)
{
Trace.Error($"{newNodeBinary} -e \"console.log()\" failed with exit code {exitCode}");
return false;
}
if (!string.Equals(outputs, nameof(RestoreTrimmedExternals), StringComparison.OrdinalIgnoreCase))
{
Trace.Error($"{newNodeBinary} -e \"console.log()\" did not output expected content.");
return false;
}
}
}
}
return true;
}
catch (Exception ex)
{
Trace.Error($"Fail to restore externals for trimmed package: {ex}");
return false;
}
finally
{
stopWatch.Stop();
_updateTrace.Enqueue($"{nameof(RestoreTrimmedExternals)}Time: {stopWatch.ElapsedMilliseconds}ms");
}
}
private async Task<bool> RestoreTrimmedDotnetRuntime(string downloadDirectory, CancellationToken token)
{
// Copy the current runner's dotnet runtime if we are using a dotnet runtime trimmed package
// Execute the runner.listener to make sure the copied runtime is working.
var stopWatch = Stopwatch.StartNew();
try
{
Trace.Info($"Copy {_dotnetRuntimeCloneDirectory} to {Path.Combine(downloadDirectory, Constants.Path.BinDirectory)}.");
IOUtil.CopyDirectory(_dotnetRuntimeCloneDirectory, Path.Combine(downloadDirectory, Constants.Path.BinDirectory), token);
// try run the runner executable to see if current dotnet runtime + future runner binary works fine.
var newRunnerBinary = Path.Combine(downloadDirectory, Constants.Path.BinDirectory, "Runner.Listener");
using (var p = HostContext.CreateService<IProcessInvoker>())
{
p.ErrorDataReceived += (_, data) =>
{
if (!string.IsNullOrEmpty(data.Data))
{
Trace.Error(data.Data);
}
};
p.OutputDataReceived += (_, data) =>
{
if (!string.IsNullOrEmpty(data.Data))
{
Trace.Info(data.Data);
}
};
var exitCode = await p.ExecuteAsync(HostContext.GetDirectory(WellKnownDirectory.Root), newRunnerBinary, "--version", null, token);
if (exitCode != 0)
{
Trace.Error($"{newRunnerBinary} --version failed with exit code {exitCode}");
return false;
}
else
{
return true;
}
}
}
catch (Exception ex)
{
Trace.Error($"Fail to restore dotnet runtime for trimmed package: {ex}");
return false;
}
finally
{
stopWatch.Stop();
_updateTrace.Enqueue($"{nameof(RestoreTrimmedDotnetRuntime)}Time: {stopWatch.ElapsedMilliseconds}ms");
}
}
private async Task CloneAndCalculateAssetsHash(string dotnetRuntimeCloneDirectory, string externalsCloneDirectory, CancellationToken token)
{
var runtimeCloneTask = CloneDotnetRuntime(dotnetRuntimeCloneDirectory, token);
var externalsCloneTask = CloneExternals(externalsCloneDirectory, token);
var waitingTasks = new Dictionary<string, Task>()
{
{nameof(CloneDotnetRuntime), runtimeCloneTask},
{nameof(CloneExternals),externalsCloneTask}
};
while (waitingTasks.Count > 0)
{
Trace.Info($"Waiting for {waitingTasks.Count} tasks to complete.");
var complatedTask = await Task.WhenAny(waitingTasks.Values);
if (waitingTasks.ContainsKey(nameof(CloneExternals)) &&
complatedTask == waitingTasks[nameof(CloneExternals)])
{
Trace.Info($"Externals clone finished.");
waitingTasks.Remove(nameof(CloneExternals));
try
{
if (await externalsCloneTask && !token.IsCancellationRequested)
{
var externalsHash = await HashFiles(externalsCloneDirectory, token);
Trace.Info($"Externals content hash: {externalsHash}");
_contentHashes[_externals] = externalsHash;
_updateTrace.Enqueue($"ExternalsHash: {_contentHashes[_externals]}");
}
else
{
Trace.Error($"Skip compute hash since clone externals failed/cancelled.");
}
}
catch (Exception ex)
{
Trace.Error($"Fail to hash externals content: {ex}");
}
}
else if (waitingTasks.ContainsKey(nameof(CloneDotnetRuntime)) &&
complatedTask == waitingTasks[nameof(CloneDotnetRuntime)])
{
Trace.Info($"Dotnet runtime clone finished.");
waitingTasks.Remove(nameof(CloneDotnetRuntime));
try
{
if (await runtimeCloneTask && !token.IsCancellationRequested)
{
var runtimeHash = await HashFiles(dotnetRuntimeCloneDirectory, token);
Trace.Info($"Runtime content hash: {runtimeHash}");
_contentHashes[_dotnetRuntime] = runtimeHash;
_updateTrace.Enqueue($"DotnetRuntimeHash: {_contentHashes[_dotnetRuntime]}");
}
else
{
Trace.Error($"Skip compute hash since clone dotnet runtime failed/cancelled.");
}
}
catch (Exception ex)
{
Trace.Error($"Fail to hash runtime content: {ex}");
}
}
Trace.Info($"Still waiting for {waitingTasks.Count} tasks to complete.");
}
}
private async Task<bool> CloneDotnetRuntime(string runtimeDir, CancellationToken token)
{
var stopWatch = Stopwatch.StartNew();
try
{
Trace.Info($"Cloning dotnet runtime to {runtimeDir}");
IOUtil.DeleteDirectory(runtimeDir, CancellationToken.None);
Directory.CreateDirectory(runtimeDir);
var assembly = Assembly.GetExecutingAssembly();
var assetsContent = default(string);
using (var stream = assembly.GetManifestResourceStream("GitHub.Runner.Listener.runnercoreassets"))
using (var streamReader = new StreamReader(stream))
{
assetsContent = await streamReader.ReadToEndAsync();
}