public async Task RunAsync()
{
// Validate args.
Trace.Entering();
ArgUtil.NotNull(ExecutionContext, nameof(ExecutionContext));
ArgUtil.NotNull(ExecutionContext.Variables, nameof(ExecutionContext.Variables));
ArgUtil.NotNull(Task, nameof(Task));
var taskManager = HostContext.GetService <ITaskManager>();
var handlerFactory = HostContext.GetService <IHandlerFactory>();
// Set the task id and display name variable.
using (var scope = ExecutionContext.Variables.CreateScope())
{
scope.Set(Constants.Variables.Task.DisplayName, DisplayName);
scope.Set(WellKnownDistributedTaskVariables.TaskInstanceId, Task.Id.ToString("D"));
scope.Set(WellKnownDistributedTaskVariables.TaskDisplayName, DisplayName);
scope.Set(WellKnownDistributedTaskVariables.TaskInstanceName, Task.Name);
// Load the task definition and choose the handler.
// TODO: Add a try catch here to give a better error message.
Definition definition = taskManager.Load(Task);
ArgUtil.NotNull(definition, nameof(definition));
// Verify Signatures and Re-Extract Tasks if neccessary
await VerifyTask(taskManager, definition);
// Print out task metadata
PrintTaskMetaData(definition);
ExecutionData currentExecution = null;
switch (Stage)
{
case JobRunStage.PreJob:
currentExecution = definition.Data?.PreJobExecution;
break;
case JobRunStage.Main:
currentExecution = definition.Data?.Execution;
break;
case JobRunStage.PostJob:
currentExecution = definition.Data?.PostJobExecution;
break;
}
;
HandlerData handlerData = GetHandlerData(ExecutionContext, currentExecution, PlatformUtil.HostOS);
if (handlerData == null)
{
if (PlatformUtil.RunningOnWindows)
{
throw new InvalidOperationException(StringUtil.Loc("SupportedTaskHandlerNotFoundWindows", $"{PlatformUtil.HostOS}({PlatformUtil.HostArchitecture})"));
}
throw new InvalidOperationException(StringUtil.Loc("SupportedTaskHandlerNotFoundLinux"));
}
Trace.Info($"Handler data is of type {handlerData}");
Variables runtimeVariables = ExecutionContext.Variables;
IStepHost stepHost = HostContext.CreateService <IDefaultStepHost>();
var stepTarget = ExecutionContext.StepTarget();
// Setup container stephost and the right runtime variables for running job inside container.
if (stepTarget is ContainerInfo containerTarget)
{
if (Stage == JobRunStage.PostJob &&
AgentKnobs.SkipPostExeceutionIfTargetContainerStopped.GetValue(ExecutionContext).AsBoolean())
{
try
{
// Check that the target container is still running, if not Skip task execution
IDockerCommandManager dockerManager = HostContext.GetService <IDockerCommandManager>();
bool isContainerRunning = await dockerManager.IsContainerRunning(ExecutionContext, containerTarget.ContainerId);
if (!isContainerRunning)
{
ExecutionContext.Result = TaskResult.Skipped;
ExecutionContext.ResultCode = $"Target container - {containerTarget.ContainerName} has been stopped, task post-execution will be skipped";
return;
}
}
catch (Exception ex)
{
ExecutionContext.Write(WellKnownTags.Warning, $"Failed to check container state for task post-execution. Exception: {ex}");
}
}
if (handlerData is AgentPluginHandlerData)
{
// plugin handler always runs on the Host, the runtime variables needs to the variable works on the Host, ex: file path variable System.DefaultWorkingDirectory
Dictionary <string, VariableValue> variableCopy = new Dictionary <string, VariableValue>(StringComparer.OrdinalIgnoreCase);
foreach (var publicVar in ExecutionContext.Variables.Public)
{
variableCopy[publicVar.Key] = new VariableValue(stepTarget.TranslateToHostPath(publicVar.Value));
}
foreach (var secretVar in ExecutionContext.Variables.Private)
{
variableCopy[secretVar.Key] = new VariableValue(stepTarget.TranslateToHostPath(secretVar.Value), true);
}
List <string> expansionWarnings;
runtimeVariables = new Variables(HostContext, variableCopy, out expansionWarnings);
expansionWarnings?.ForEach(x => ExecutionContext.Warning(x));
}
else if (handlerData is BaseNodeHandlerData || handlerData is PowerShell3HandlerData)
{
// Only the node, node10, and powershell3 handlers support running inside container.
// Make sure required container is already created.
ArgUtil.NotNullOrEmpty(containerTarget.ContainerId, nameof(containerTarget.ContainerId));
var containerStepHost = HostContext.CreateService <IContainerStepHost>();
containerStepHost.Container = containerTarget;
stepHost = containerStepHost;
}
else
{
throw new NotSupportedException(String.Format("Task '{0}' is using legacy execution handler '{1}' which is not supported in container execution flow.", definition.Data.FriendlyName, handlerData.GetType().ToString()));
}
}
// Load the default input values from the definition.
Trace.Verbose("Loading default inputs.");
var inputs = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
foreach (var input in (definition.Data?.Inputs ?? new TaskInputDefinition[0]))
{
string key = input?.Name?.Trim() ?? string.Empty;
if (!string.IsNullOrEmpty(key))
{
if (AgentKnobs.DisableInputTrimming.GetValue(ExecutionContext).AsBoolean())
{
inputs[key] = input.DefaultValue ?? string.Empty;
}
else
{
inputs[key] = input.DefaultValue?.Trim() ?? string.Empty;
}
}
}
// Merge the instance inputs.
Trace.Verbose("Loading instance inputs.");
foreach (var input in (Task.Inputs as IEnumerable <KeyValuePair <string, string> > ?? new KeyValuePair <string, string> [0]))
{
string key = input.Key?.Trim() ?? string.Empty;
if (!string.IsNullOrEmpty(key))
{
if (AgentKnobs.DisableInputTrimming.GetValue(ExecutionContext).AsBoolean())
{
inputs[key] = input.Value ?? string.Empty;
}
else
{
inputs[key] = input.Value?.Trim() ?? string.Empty;
}
}
}
// Expand the inputs.
Trace.Verbose("Expanding inputs.");
runtimeVariables.ExpandValues(target: inputs);
// We need to verify inputs of the tasks that were injected by decorators, to check if they contain secrets,
// for security reasons execution of tasks in this case should be skipped.
// Target task inputs could be injected into the decorator's tasks if the decorator has post-task-tasks or pre-task-tasks targets,
// such tasks will have names that start with __system_pretargettask_ or __system_posttargettask_.
var taskDecoratorManager = HostContext.GetService <ITaskDecoratorManager>();
if (taskDecoratorManager.IsInjectedTaskForTarget(Task.Name) &&
taskDecoratorManager.IsInjectedInputsContainsSecrets(inputs, out var inputsWithSecrets))
{
var inputsForReport = taskDecoratorManager.GenerateTaskResultMessage(inputsWithSecrets);
ExecutionContext.Result = TaskResult.Skipped;
ExecutionContext.ResultCode = StringUtil.Loc("SecretsAreNotAllowedInInjectedTaskInputs", inputsForReport);
return;
}
VarUtil.ExpandEnvironmentVariables(HostContext, target: inputs);
// Translate the server file path inputs to local paths.
foreach (var input in definition.Data?.Inputs ?? new TaskInputDefinition[0])
{
if (string.Equals(input.InputType, TaskInputType.FilePath, StringComparison.OrdinalIgnoreCase))
{
Trace.Verbose($"Translating file path input '{input.Name}': '{inputs[input.Name]}'");
inputs[input.Name] = stepHost.ResolvePathForStepHost(TranslateFilePathInput(inputs[input.Name] ?? string.Empty));
Trace.Verbose($"Translated file path input '{input.Name}': '{inputs[input.Name]}'");
}
}
// Load the task environment.
Trace.Verbose("Loading task environment.");
var environment = new Dictionary <string, string>(VarUtil.EnvironmentVariableKeyComparer);
foreach (var env in (Task.Environment ?? new Dictionary <string, string>(0)))
{
string key = env.Key?.Trim() ?? string.Empty;
if (!string.IsNullOrEmpty(key))
{
environment[key] = env.Value?.Trim() ?? string.Empty;
}
}
// Expand the inputs.
Trace.Verbose("Expanding task environment.");
runtimeVariables.ExpandValues(target: environment);
VarUtil.ExpandEnvironmentVariables(HostContext, target: environment);
// Expand the handler inputs.
Trace.Verbose("Expanding handler inputs.");
VarUtil.ExpandValues(HostContext, source: inputs, target: handlerData.Inputs);
runtimeVariables.ExpandValues(target: handlerData.Inputs);
// Get each endpoint ID referenced by the task.
var endpointIds = new List <Guid>();
foreach (var input in definition.Data?.Inputs ?? new TaskInputDefinition[0])
{
if ((input.InputType ?? string.Empty).StartsWith("connectedService:", StringComparison.OrdinalIgnoreCase))
{
string inputKey = input?.Name?.Trim() ?? string.Empty;
string inputValue;
if (!string.IsNullOrEmpty(inputKey) &&
inputs.TryGetValue(inputKey, out inputValue) &&
!string.IsNullOrEmpty(inputValue))
{
foreach (string rawId in inputValue.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
Guid parsedId;
if (Guid.TryParse(rawId.Trim(), out parsedId) && parsedId != Guid.Empty)
{
endpointIds.Add(parsedId);
}
}
}
}
}
if (endpointIds.Count > 0 &&
(runtimeVariables.GetBoolean(WellKnownDistributedTaskVariables.RestrictSecrets) ?? false) &&
(runtimeVariables.GetBoolean(Microsoft.TeamFoundation.Build.WebApi.BuildVariables.IsFork) ?? false))
{
ExecutionContext.Result = TaskResult.Skipped;
ExecutionContext.ResultCode = $"References service endpoint. PRs from repository forks are not allowed to access secrets in the pipeline. For more information see https://go.microsoft.com/fwlink/?linkid=862029 ";
return;
}
// Get the endpoints referenced by the task.
var endpoints = (ExecutionContext.Endpoints ?? new List <ServiceEndpoint>(0))
.Join(inner: endpointIds,
outerKeySelector: (ServiceEndpoint endpoint) => endpoint.Id,
innerKeySelector: (Guid endpointId) => endpointId,
resultSelector: (ServiceEndpoint endpoint, Guid endpointId) => endpoint)
.ToList();
// Add the system endpoint.
foreach (ServiceEndpoint endpoint in (ExecutionContext.Endpoints ?? new List <ServiceEndpoint>(0)))
{
if (string.Equals(endpoint.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase))
{
endpoints.Add(endpoint);
break;
}
}
// Get each secure file ID referenced by the task.
var secureFileIds = new List <Guid>();
foreach (var input in definition.Data?.Inputs ?? new TaskInputDefinition[0])
{
if (string.Equals(input.InputType ?? string.Empty, "secureFile", StringComparison.OrdinalIgnoreCase))
{
string inputKey = input?.Name?.Trim() ?? string.Empty;
string inputValue;
if (!string.IsNullOrEmpty(inputKey) &&
inputs.TryGetValue(inputKey, out inputValue) &&
!string.IsNullOrEmpty(inputValue))
{
foreach (string rawId in inputValue.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
Guid parsedId;
if (Guid.TryParse(rawId.Trim(), out parsedId) && parsedId != Guid.Empty)
{
secureFileIds.Add(parsedId);
}
}
}
}
}
if (secureFileIds.Count > 0 &&
(runtimeVariables.GetBoolean(WellKnownDistributedTaskVariables.RestrictSecrets) ?? false) &&
(runtimeVariables.GetBoolean(Microsoft.TeamFoundation.Build.WebApi.BuildVariables.IsFork) ?? false))
{
ExecutionContext.Result = TaskResult.Skipped;
ExecutionContext.ResultCode = $"References secure file. PRs from repository forks are not allowed to access secrets in the pipeline. For more information see https://go.microsoft.com/fwlink/?linkid=862029";
return;
}
// Get the endpoints referenced by the task.
var secureFiles = (ExecutionContext.SecureFiles ?? new List <SecureFile>(0))
.Join(inner: secureFileIds,
outerKeySelector: (SecureFile secureFile) => secureFile.Id,
innerKeySelector: (Guid secureFileId) => secureFileId,
resultSelector: (SecureFile secureFile, Guid secureFileId) => secureFile)
.ToList();
// Set output variables.
foreach (var outputVar in definition.Data?.OutputVariables ?? new OutputVariable[0])
{
if (outputVar != null && !string.IsNullOrEmpty(outputVar.Name))
{
ExecutionContext.OutputVariables.Add(outputVar.Name);
}
}
// translate inputs
inputs = inputs.ToDictionary(kvp => kvp.Key, kvp => ExecutionContext.TranslatePathForStepTarget(kvp.Value));
// Create the handler.
IHandler handler = handlerFactory.Create(
ExecutionContext,
Task.Reference,
stepHost,
endpoints,
secureFiles,
handlerData,
inputs,
environment,
runtimeVariables,
taskDirectory: definition.Directory);
// Run the task.
int retryCount = this.Task.RetryCountOnTaskFailure;
if (retryCount > 0)
{
if (retryCount > RetryCountOnTaskFailureLimit)
{
ExecutionContext.Warning(StringUtil.Loc("RetryCountLimitExceeded", RetryCountOnTaskFailureLimit, retryCount));
retryCount = RetryCountOnTaskFailureLimit;
}
RetryHelper rh = new RetryHelper(ExecutionContext, retryCount);
await rh.RetryStep(async() => await handler.RunAsync(), RetryHelper.ExponentialDelay);
}
else
{
await handler.RunAsync();
}
}
}