Update documentation for Fedora lttng-ust compatibility handling

Co-authored-by: salmanmkc <32169182+salmanmkc@users.noreply.github.com>

.devcontainer/devcontainer.json

@@ -4,7 +4,7 @@
   "features": {
     "ghcr.io/devcontainers/features/docker-in-docker:1": {},
     "ghcr.io/devcontainers/features/dotnet": {
-      "version": "8.0.412"
+      "version": "8.0.413"
     },
     "ghcr.io/devcontainers/features/node:1": {
       "version": "20"

.github/workflows/release.yml

@@ -338,7 +338,7 @@ jobs:
             org.opencontainers.image.licenses=MIT
 
       - name: Generate attestation
-        uses: actions/attest-build-provenance@v2
+        uses: actions/attest-build-provenance@v3
         with:
           subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           subject-digest: ${{ steps.build-and-push.outputs.digest }}

docs/start/envlinux.md

@@ -20,6 +20,7 @@ Execute ./bin/installdependencies.sh to install any missing Dotnet Core 6.0 depe
 You can easily correct the problem by executing `./bin/installdependencies.sh`.  
 The `installdependencies.sh` script should install all required dependencies on all supported Linux versions  
 > Note: The `installdependencies.sh` script will try to use the default package management mechanism on your Linux flavor (ex. `yum`/`apt-get`/`apt`).
+> For Fedora-based systems, the script automatically handles lttng-ust version compatibility by creating symlinks when needed (e.g., Fedora 41 ships with liblttng-ust.so.1 but the runner needs liblttng-ust.so.0).
 
 ### Full dependencies list
 
@@ -33,7 +34,7 @@ Debian based OS (Debian, Ubuntu, Linux Mint)
 
 Fedora based OS (Fedora, Red Hat Enterprise Linux, CentOS, Oracle Linux 7)
 
-- lttng-ust
+- lttng-ust (the installdependencies.sh script will automatically handle version compatibility for newer Fedora versions)
 - openssl-libs
 - krb5-libs
 - zlib

images/Dockerfile

@@ -5,8 +5,8 @@ ARG TARGETOS
 ARG TARGETARCH
 ARG RUNNER_VERSION
 ARG RUNNER_CONTAINER_HOOKS_VERSION=0.7.0
-ARG DOCKER_VERSION=28.3.2
+ARG DOCKER_VERSION=28.3.3
-ARG BUILDX_VERSION=0.26.1
+ARG BUILDX_VERSION=0.27.0
 
 RUN apt update -y && apt install curl unzip -y
 

src/Misc/expressionFunc/hashFiles/package.json

@@ -36,13 +36,13 @@
   },
   "devDependencies": {
     "@types/node": "^20.6.2",
-    "@typescript-eslint/eslint-plugin": "^6.7.2",
+    "@typescript-eslint/eslint-plugin": "^6.21.0",
     "@typescript-eslint/parser": "^6.7.2",
-    "@vercel/ncc": "^0.38.0",
+    "@vercel/ncc": "^0.38.3",
     "eslint": "^8.47.0",
-    "eslint-plugin-github": "^4.10.0",
+    "eslint-plugin-github": "^4.10.2",
     "eslint-plugin-prettier": "^5.0.0",
-    "husky": "^8.0.3",
+    "husky": "^9.1.7",
     "lint-staged": "^15.5.0",
     "prettier": "^3.0.3",
     "typescript": "^5.2.2"

src/Misc/layoutbin/installdependencies.sh

@@ -131,12 +131,63 @@ then
             command -v dnf
             if [ $? -eq 0 ]
             then
-                dnf install -y lttng-ust openssl-libs krb5-libs zlib libicu
+                # Install basic dependencies first
+                dnf install -y openssl-libs krb5-libs zlib libicu
                 if [ $? -ne 0 ]
                 then
                     echo "'dnf' failed with exit code '$?'"
                     print_errormessage
                     exit 1
+                fi
+
+                # Handle lttng-ust with fallback logic for version compatibility
+                dnf_with_lttng_fallbacks() {
+                    # Try to install the current lttng-ust package
+                    dnf install -y lttng-ust
+                    if [ $? -eq 0 ]
+                    then
+                        # Check if it provides the required liblttng-ust.so.0
+                        if ldconfig -p | grep -q "liblttng-ust.so.0"
+                        then
+                            echo "Found liblttng-ust.so.0"
+                            return 0
+                        else
+                            echo "Warning: lttng-ust installed but liblttng-ust.so.0 not found"
+                            echo "Attempting to create compatibility symlink..."
+                            
+                            # Find the actual liblttng-ust library
+                            lttng_lib=$(ldconfig -p | grep "liblttng-ust.so" | head -1 | awk '{print $NF}')
+                            if [ -n "$lttng_lib" ] && [ -f "$lttng_lib" ]
+                            then
+                                # Create symlink in the same directory
+                                lib_dir=$(dirname "$lttng_lib")
+                                if [ -w "$lib_dir" ]
+                                then
+                                    ln -sf "$(basename "$lttng_lib")" "$lib_dir/liblttng-ust.so.0"
+                                    echo "Created compatibility symlink: $lib_dir/liblttng-ust.so.0 -> $(basename "$lttng_lib")"
+                                    ldconfig
+                                    return 0
+                                else
+                                    echo "Cannot create symlink in $lib_dir (permission denied)"
+                                    return 1
+                                fi
+                            else
+                                echo "Could not find lttng-ust library file"
+                                return 1
+                            fi
+                        fi
+                    else
+                        echo "Failed to install lttng-ust package"
+                        return 1
+                    fi
+                }
+
+                dnf_with_lttng_fallbacks
+                if [ $? -ne 0 ]
+                then
+                    echo "Failed to install lttng-ust with compatibility"
+                    print_errormessage
+                    exit 1
                 fi         
             else
                 echo "Can not find 'dnf'"

src/Misc/layoutroot/safe_sleep.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
 SECONDS=0
-while [[ $SECONDS != $1 ]]; do
+while [[ $SECONDS -lt $1 ]]; do
     :
 done

src/Runner.Common/BrokerServer.cs

@@ -23,6 +23,8 @@ namespace GitHub.Runner.Common
 
         Task<TaskAgentMessage> GetRunnerMessageAsync(Guid? sessionId, TaskAgentStatus status, string version, string os, string architecture, bool disableUpdate, CancellationToken token);
 
+        Task AcknowledgeRunnerRequestAsync(string runnerRequestId, Guid? sessionId, TaskAgentStatus status, string version, string os, string architecture, CancellationToken token);
+
         Task UpdateConnectionIfNeeded(Uri serverUri, VssCredentials credentials);
 
         Task ForceRefreshConnection(VssCredentials credentials);
@@ -67,10 +69,17 @@ namespace GitHub.Runner.Common
             var brokerSession = RetryRequest<TaskAgentMessage>(
                 async () => await _brokerHttpClient.GetRunnerMessageAsync(sessionId, version, status, os, architecture, disableUpdate, cancellationToken), cancellationToken, shouldRetry: ShouldRetryException);
 
-
             return brokerSession;
         }
 
+        public async Task AcknowledgeRunnerRequestAsync(string runnerRequestId, Guid? sessionId, TaskAgentStatus status, string version, string os, string architecture, CancellationToken cancellationToken)
+        {
+            CheckConnection();
+
+            // No retries
+            await _brokerHttpClient.AcknowledgeRunnerRequestAsync(runnerRequestId, sessionId, version, status, os, architecture, cancellationToken);
+        }
+
         public async Task DeleteSessionAsync(CancellationToken cancellationToken)
         {
             CheckConnection();

src/Runner.Common/RunnerService.cs

@@ -70,7 +70,7 @@ namespace GitHub.Runner.Common
 
         protected async Task RetryRequest(Func<Task> func,
             CancellationToken cancellationToken,
-            int maxRetryAttemptsCount = 5,
+            int maxAttempts = 5,
             Func<Exception, bool> shouldRetry = null
         )
         {
@@ -79,31 +79,31 @@ namespace GitHub.Runner.Common
                 await func();
                 return Unit.Value;
             }
-            await RetryRequest<Unit>(wrappedFunc, cancellationToken, maxRetryAttemptsCount, shouldRetry);
+            await RetryRequest<Unit>(wrappedFunc, cancellationToken, maxAttempts, shouldRetry);
         }
 
         protected async Task<T> RetryRequest<T>(Func<Task<T>> func,
             CancellationToken cancellationToken,
-            int maxRetryAttemptsCount = 5,
+            int maxAttempts = 5,
             Func<Exception, bool> shouldRetry = null
         )
         {
-            var retryCount = 0;
+            var attempt = 0;
             while (true)
             {
-                retryCount++;
+                attempt++;
                 cancellationToken.ThrowIfCancellationRequested();
                 try
                 {
                     return await func();
                 }
                 // TODO: Add handling of non-retriable exceptions: https://github.com/github/actions-broker/issues/122
-                catch (Exception ex) when (retryCount < maxRetryAttemptsCount && (shouldRetry == null || shouldRetry(ex)))
+                catch (Exception ex) when (attempt < maxAttempts && (shouldRetry == null || shouldRetry(ex)))
                 {
                     Trace.Error("Catch exception during request");
                     Trace.Error(ex);
                     var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(15));
-                    Trace.Warning($"Back off {backOff.TotalSeconds} seconds before next retry. {maxRetryAttemptsCount - retryCount} attempt left.");
+                    Trace.Warning($"Back off {backOff.TotalSeconds} seconds before next retry. {maxAttempts - attempt} attempt left.");
                     await Task.Delay(backOff, cancellationToken);
                 }
             }

src/Runner.Listener/BrokerMessageListener.cs

@@ -23,7 +23,7 @@ namespace GitHub.Runner.Listener
         private RunnerSettings _settings;
         private ITerminal _term;
         private TimeSpan _getNextMessageRetryInterval;
-        private TaskAgentStatus runnerStatus = TaskAgentStatus.Online;
+        private TaskAgentStatus _runnerStatus = TaskAgentStatus.Online;
         private CancellationTokenSource _getMessagesTokenSource;
         private VssCredentials _creds;
         private VssCredentials _credsV2;
@@ -258,7 +258,7 @@ namespace GitHub.Runner.Listener
         public void OnJobStatus(object sender, JobStatusEventArgs e)
         {
             Trace.Info("Received job status event. JobState: {0}", e.Status);
-            runnerStatus = e.Status;
+            _runnerStatus = e.Status;
             try
             {
                 _getMessagesTokenSource?.Cancel();
@@ -291,7 +291,7 @@ namespace GitHub.Runner.Listener
                     }
 
                     message = await _brokerServer.GetRunnerMessageAsync(_session.SessionId,
-                                                                        runnerStatus,
+                                                                        _runnerStatus,
                                                                         BuildConstants.RunnerPackage.Version,
                                                                         VarUtil.OS,
                                                                         VarUtil.OSArchitecture,
@@ -417,6 +417,21 @@ namespace GitHub.Runner.Listener
             await Task.CompletedTask;
         }
 
+        public async Task AcknowledgeMessageAsync(string runnerRequestId, CancellationToken cancellationToken)
+        {
+            using var timeoutCts = new CancellationTokenSource(TimeSpan.FromSeconds(5)); // Short timeout
+            using var linkedCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, timeoutCts.Token);
+            Trace.Info($"Acknowledging runner request '{runnerRequestId}'.");
+            await _brokerServer.AcknowledgeRunnerRequestAsync(
+                runnerRequestId,
+                _session.SessionId,
+                _runnerStatus,
+                BuildConstants.RunnerPackage.Version,
+                VarUtil.OS,
+                VarUtil.OSArchitecture,
+                linkedCts.Token);
+        }
+
         private bool IsGetNextMessageExceptionRetriable(Exception ex)
         {
             if (ex is TaskAgentNotFoundException ||

src/Runner.Listener/MessageListener.cs

@@ -32,6 +32,7 @@ namespace GitHub.Runner.Listener
         Task DeleteSessionAsync();
         Task<TaskAgentMessage> GetNextMessageAsync(CancellationToken token);
         Task DeleteMessageAsync(TaskAgentMessage message);
+        Task AcknowledgeMessageAsync(string runnerRequestId, CancellationToken cancellationToken);
 
         Task RefreshListenerTokenAsync();
         void OnJobStatus(object sender, JobStatusEventArgs e);
@@ -52,7 +53,7 @@ namespace GitHub.Runner.Listener
         private readonly TimeSpan _sessionConflictRetryLimit = TimeSpan.FromMinutes(4);
         private readonly TimeSpan _clockSkewRetryLimit = TimeSpan.FromMinutes(30);
         private readonly Dictionary<string, int> _sessionCreationExceptionTracker = new();
-        private TaskAgentStatus runnerStatus = TaskAgentStatus.Online;
+        private TaskAgentStatus _runnerStatus = TaskAgentStatus.Online;
         private CancellationTokenSource _getMessagesTokenSource;
         private VssCredentials _creds;
         private VssCredentials _credsV2;
@@ -217,7 +218,7 @@ namespace GitHub.Runner.Listener
         public void OnJobStatus(object sender, JobStatusEventArgs e)
         {
             Trace.Info("Received job status event. JobState: {0}", e.Status);
-            runnerStatus = e.Status;
+            _runnerStatus = e.Status;
             try
             {
                 _getMessagesTokenSource?.Cancel();
@@ -250,7 +251,7 @@ namespace GitHub.Runner.Listener
                     message = await _runnerServer.GetAgentMessageAsync(_settings.PoolId,
                                                                 _session.SessionId,
                                                                 _lastMessageId,
-                                                                runnerStatus,
+                                                                _runnerStatus,
                                                                 BuildConstants.RunnerPackage.Version,
                                                                 VarUtil.OS,
                                                                 VarUtil.OSArchitecture,
@@ -274,7 +275,7 @@ namespace GitHub.Runner.Listener
                         }
 
                         message = await _brokerServer.GetRunnerMessageAsync(_session.SessionId,
-                                                                        runnerStatus,
+                                                                        _runnerStatus,
                                                                         BuildConstants.RunnerPackage.Version,
                                                                         VarUtil.OS,
                                                                         VarUtil.OSArchitecture,
@@ -437,6 +438,21 @@ namespace GitHub.Runner.Listener
             await _brokerServer.ForceRefreshConnection(_credsV2);
         }
 
+        public async Task AcknowledgeMessageAsync(string runnerRequestId, CancellationToken cancellationToken)
+        {
+            using var timeoutCts = new CancellationTokenSource(TimeSpan.FromSeconds(5)); // Short timeout
+            using var linkedCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, timeoutCts.Token);
+            Trace.Info($"Acknowledging runner request '{runnerRequestId}'.");
+            await _brokerServer.AcknowledgeRunnerRequestAsync(
+                runnerRequestId,
+                _session.SessionId,
+                _runnerStatus,
+                BuildConstants.RunnerPackage.Version,
+                VarUtil.OS,
+                VarUtil.OSArchitecture,
+                linkedCts.Token);
+        }
+
         private TaskAgentMessage DecryptMessage(TaskAgentMessage message)
         {
             if (_session.EncryptionKey == null ||

src/Runner.Listener/Runner.cs

@@ -654,22 +654,42 @@ namespace GitHub.Runner.Listener
                                 else
                                 {
                                     var messageRef = StringUtil.ConvertFromJson<RunnerJobRequestRef>(message.Body);
-                                    Pipelines.AgentJobRequestMessage jobRequestMessage = null;
 
-                                    // Create connection
+                                    // Acknowledge (best-effort)
-                                    var credMgr = HostContext.GetService<ICredentialManager>();
+                                    if (messageRef.ShouldAcknowledge) // Temporary feature flag
+                                    {
+                                        try
+                                        {
+                                            await _listener.AcknowledgeMessageAsync(messageRef.RunnerRequestId, messageQueueLoopTokenSource.Token);
+                                        }
+                                        catch (Exception ex)
+                                        {
+                                            Trace.Error($"Best-effort acknowledge failed for request '{messageRef.RunnerRequestId}'");
+                                            Trace.Error(ex);
+                                        }
+                                    }
+
+                                    Pipelines.AgentJobRequestMessage jobRequestMessage = null;
                                     if (string.IsNullOrEmpty(messageRef.RunServiceUrl))
                                     {
+                                        // Connect
+                                        var credMgr = HostContext.GetService<ICredentialManager>();
                                         var creds = credMgr.LoadCredentials(allowAuthUrlV2: false);
                                         var actionsRunServer = HostContext.CreateService<IActionsRunServer>();
                                         await actionsRunServer.ConnectAsync(new Uri(settings.ServerUrl), creds);
+
+                                        // Get job message
                                         jobRequestMessage = await actionsRunServer.GetJobMessageAsync(messageRef.RunnerRequestId, messageQueueLoopTokenSource.Token);
                                     }
                                     else
                                     {
+                                        // Connect
+                                        var credMgr = HostContext.GetService<ICredentialManager>();
                                         var credsV2 = credMgr.LoadCredentials(allowAuthUrlV2: true);
                                         var runServer = HostContext.CreateService<IRunServer>();
                                         await runServer.ConnectAsync(new Uri(messageRef.RunServiceUrl), credsV2);
+
+                                        // Get job message
                                         try
                                         {
                                             jobRequestMessage = await runServer.GetJobMessageAsync(messageRef.RunnerRequestId, messageRef.BillingOwnerId, messageQueueLoopTokenSource.Token);
@@ -698,7 +718,10 @@ namespace GitHub.Runner.Listener
                                         }
                                     }
 
+                                    // Dispatch
                                     jobDispatcher.Run(jobRequestMessage, runOnce);
+
+                                    // Run once?
                                     if (runOnce)
                                     {
                                         Trace.Info("One time used runner received job message.");

src/Runner.Listener/RunnerJobRequestRef.cs

@@ -10,6 +10,9 @@ namespace GitHub.Runner.Listener
         
         [DataMember(Name = "runner_request_id")]
         public string RunnerRequestId { get; set; }
+
+        [DataMember(Name = "should_acknowledge")]
+        public bool ShouldAcknowledge { get; set; }
         
         [DataMember(Name = "run_service_url")]
         public string RunServiceUrl { get; set; }

src/Sdk/WebApi/WebApi/BrokerHttpClient.cs

@@ -79,6 +79,7 @@ namespace GitHub.Actions.RunService.WebApi
             {
                 queryParams.Add("status", status.Value.ToString());
             }
+
             if (runnerVersion != null)
             {
                 queryParams.Add("runnerVersion", runnerVersion);
@@ -142,7 +143,6 @@ namespace GitHub.Actions.RunService.WebApi
         }
 
         public async Task<TaskAgentSession> CreateSessionAsync(
-
            TaskAgentSession session,
            CancellationToken cancellationToken = default)
         {
@@ -191,6 +191,76 @@ namespace GitHub.Actions.RunService.WebApi
             throw new Exception($"Failed to delete broker session: {result.Error}");
         }
 
+        public async Task AcknowledgeRunnerRequestAsync(
+            string runnerRequestId,
+            Guid? sessionId,
+            string runnerVersion,
+            TaskAgentStatus? status,
+            string os = null,
+            string architecture = null,
+            CancellationToken cancellationToken = default)
+        {
+            // URL
+            var requestUri = new Uri(Client.BaseAddress, "acknowledge");
+
+            // Query parameters
+            List<KeyValuePair<string, string>> queryParams = new List<KeyValuePair<string, string>>();
+            if (sessionId != null)
+            {
+                queryParams.Add("sessionId", sessionId.Value.ToString());
+            }
+            if (status != null)
+            {
+                queryParams.Add("status", status.Value.ToString());
+            }
+            if (runnerVersion != null)
+            {
+                queryParams.Add("runnerVersion", runnerVersion);
+            }
+            if (os != null)
+            {
+                queryParams.Add("os", os);
+            }
+            if (architecture != null)
+            {
+                queryParams.Add("architecture", architecture);
+            }
+
+            // Body
+            var payload = new Dictionary<string, string>
+            {
+                ["runnerRequestId"] = runnerRequestId,
+            };
+            var requestContent = new ObjectContent<Dictionary<string, string>>(payload, new VssJsonMediaTypeFormatter(true));
+
+            // POST
+            var result = await SendAsync<object>(
+                new HttpMethod("POST"),
+                requestUri: requestUri,
+                queryParameters: queryParams,
+                content: requestContent,
+                readErrorBody: true,
+                cancellationToken: cancellationToken);
+
+            if (result.IsSuccess)
+            {
+                return;
+            }
+
+            if (TryParseErrorBody(result.ErrorBody, out BrokerError brokerError))
+            {
+                switch (brokerError.ErrorKind)
+                {
+                    case BrokerErrorKind.RunnerNotFound:
+                        throw new RunnerNotFoundException(brokerError.Message);
+                    default:
+                        break;
+                }
+            }
+
+            throw new Exception($"Failed to acknowledge runner request. Request to {requestUri} failed with status: {result.StatusCode}. Error message {result.Error}");
+        }
+
         private static bool TryParseErrorBody(string errorBody, out BrokerError error)
         {
             if (!string.IsNullOrEmpty(errorBody))

src/dev.sh

@@ -17,7 +17,7 @@ LAYOUT_DIR="$SCRIPT_DIR/../_layout"
 DOWNLOAD_DIR="$SCRIPT_DIR/../_downloads/netcore2x"
 PACKAGE_DIR="$SCRIPT_DIR/../_package"
 DOTNETSDK_ROOT="$SCRIPT_DIR/../_dotnetsdk"
-DOTNETSDK_VERSION="8.0.412"
+DOTNETSDK_VERSION="8.0.413"
 DOTNETSDK_INSTALLDIR="$DOTNETSDK_ROOT/$DOTNETSDK_VERSION"
 RUNNER_VERSION=$(cat runnerversion)
 

src/global.json

@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "8.0.412"
+    "version": "8.0.413"
   }
 }