// download all required tasks.
// make sure all task's condition inputs are valid.
// build up three list of steps for jobrunner. (pre-job, job, post-job)
public async Task <JobInitializeResult> InitializeJob(IExecutionContext jobContext, Pipelines.AgentJobRequestMessage message)
{
Trace.Entering();
ArgUtil.NotNull(jobContext, nameof(jobContext));
ArgUtil.NotNull(message, nameof(message));
// create a new timeline record node for 'Initialize job'
IExecutionContext context = jobContext.CreateChild(Guid.NewGuid(), StringUtil.Loc("InitializeJob"), nameof(JobExtension));
JobInitializeResult initResult = new JobInitializeResult();
using (var register = jobContext.CancellationToken.Register(() => { context.CancelToken(); }))
{
try
{
context.Start();
context.Section(StringUtil.Loc("StepStarting", StringUtil.Loc("InitializeJob")));
// Set agent version variable.
context.Variables.Set(Constants.Variables.Agent.Version, Constants.Agent.Version);
context.Output(StringUtil.Loc("AgentVersion", Constants.Agent.Version));
// Print proxy setting information for better diagnostic experience
var agentWebProxy = HostContext.GetService <IVstsAgentWebProxy>();
if (!string.IsNullOrEmpty(agentWebProxy.ProxyAddress))
{
context.Output(StringUtil.Loc("AgentRunningBehindProxy", agentWebProxy.ProxyAddress));
}
// Give job extension a chance to initialize
Trace.Info($"Run initial step from extension {this.GetType().Name}.");
InitializeJobExtension(context, message.Steps, message.Workspace);
// Download tasks if not already in the cache
Trace.Info("Downloading task definitions.");
var taskManager = HostContext.GetService <ITaskManager>();
await taskManager.DownloadAsync(context, message.Steps);
// Parse all Task conditions.
Trace.Info("Parsing all task's condition inputs.");
var expression = HostContext.GetService <IExpressionManager>();
Dictionary <Guid, IExpressionNode> taskConditionMap = new Dictionary <Guid, IExpressionNode>();
foreach (var task in message.Steps.OfType <Pipelines.TaskStep>())
{
IExpressionNode condition;
if (!string.IsNullOrEmpty(task.Condition))
{
context.Debug($"Task '{task.DisplayName}' has following condition: '{task.Condition}'.");
condition = expression.Parse(context, task.Condition);
}
else
{
condition = ExpressionManager.Succeeded;
}
taskConditionMap[task.Id] = condition;
}
#if OS_WINDOWS
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var prepareScript = Environment.GetEnvironmentVariable("VSTS_AGENT_INIT_INTERNAL_TEMP_HACK");
ServiceEndpoint systemConnection = context.Endpoints.Single(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
if (!string.IsNullOrEmpty(prepareScript) && context.Container == null)
{
var prepareStep = new ManagementScriptStep(
scriptPath: prepareScript,
condition: ExpressionManager.Succeeded,
displayName: "Agent Initialization");
Trace.Verbose($"Adding agent init script step.");
prepareStep.Initialize(HostContext);
prepareStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), prepareStep.DisplayName, nameof(ManagementScriptStep));
prepareStep.AccessToken = systemConnection.Authorization.Parameters["AccessToken"];
prepareStep.Condition = ExpressionManager.Succeeded;
initResult.PreJobSteps.Add(prepareStep);
}
#endif
// build up 3 lists of steps, pre-job, job, post-job
Stack <IStep> postJobStepsBuilder = new Stack <IStep>();
Dictionary <Guid, Variables> taskVariablesMapping = new Dictionary <Guid, Variables>();
if (context.Container != null || context.SidecarContainers.Count > 0)
{
var containerProvider = HostContext.GetService <IContainerOperationProvider>();
var containers = new List <Container.ContainerInfo>();
if (context.Container != null)
{
containers.Add(context.Container);
}
containers.AddRange(context.SidecarContainers);
initResult.PreJobSteps.Add(new JobExtensionRunner(runAsync: containerProvider.StartContainersAsync,
condition: ExpressionManager.Succeeded,
displayName: StringUtil.Loc("InitializeContainer"),
data: (object)containers));
postJobStepsBuilder.Push(new JobExtensionRunner(runAsync: containerProvider.StopContainersAsync,
condition: ExpressionManager.Always,
displayName: StringUtil.Loc("StopContainer"),
data: (object)containers));
}
foreach (var task in message.Steps.OfType <Pipelines.TaskStep>())
{
var taskDefinition = taskManager.Load(task);
List <string> warnings;
taskVariablesMapping[task.Id] = new Variables(HostContext, new Dictionary <string, VariableValue>(), out warnings);
// Add pre-job steps from Tasks
if (taskDefinition.Data?.PreJobExecution != null)
{
Trace.Info($"Adding Pre-Job {task.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.Task = task;
taskRunner.Stage = JobRunStage.PreJob;
taskRunner.Condition = taskConditionMap[task.Id];
initResult.PreJobSteps.Add(taskRunner);
}
// Add execution steps from Tasks
if (taskDefinition.Data?.Execution != null)
{
Trace.Verbose($"Adding {task.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.Task = task;
taskRunner.Stage = JobRunStage.Main;
taskRunner.Condition = taskConditionMap[task.Id];
initResult.JobSteps.Add(taskRunner);
}
// Add post-job steps from Tasks
if (taskDefinition.Data?.PostJobExecution != null)
{
Trace.Verbose($"Adding Post-Job {task.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.Task = task;
taskRunner.Stage = JobRunStage.PostJob;
taskRunner.Condition = ExpressionManager.Always;
postJobStepsBuilder.Push(taskRunner);
}
}
// Add pre-job step from Extension
Trace.Info("Adding pre-job step from extension.");
var extensionPreJobStep = GetExtensionPreJobStep(jobContext);
if (extensionPreJobStep != null)
{
initResult.PreJobSteps.Add(extensionPreJobStep);
}
// Add post-job step from Extension
Trace.Info("Adding post-job step from extension.");
var extensionPostJobStep = GetExtensionPostJobStep(jobContext);
if (extensionPostJobStep != null)
{
postJobStepsBuilder.Push(extensionPostJobStep);
}
// create execution context for all pre-job steps
foreach (var step in initResult.PreJobSteps)
{
#if OS_WINDOWS
if (step is ManagementScriptStep)
{
continue;
}
#endif
if (step is JobExtensionRunner)
{
JobExtensionRunner extensionStep = step as JobExtensionRunner;
ArgUtil.NotNull(extensionStep, extensionStep.DisplayName);
Guid stepId = Guid.NewGuid();
extensionStep.ExecutionContext = jobContext.CreateChild(stepId, extensionStep.DisplayName, stepId.ToString("N"));
}
else if (step is ITaskRunner)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), StringUtil.Loc("PreJob", taskStep.DisplayName), taskStep.Task.Name, taskVariablesMapping[taskStep.Task.Id]);
}
}
// create task execution context for all job steps from task
foreach (var step in initResult.JobSteps)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(taskStep.Task.Id, taskStep.DisplayName, taskStep.Task.Name, taskVariablesMapping[taskStep.Task.Id]);
}
// Add post-job steps from Tasks
Trace.Info("Adding post-job steps from tasks.");
while (postJobStepsBuilder.Count > 0)
{
initResult.PostJobStep.Add(postJobStepsBuilder.Pop());
}
// create task execution context for all post-job steps from task
foreach (var step in initResult.PostJobStep)
{
if (step is JobExtensionRunner)
{
JobExtensionRunner extensionStep = step as JobExtensionRunner;
ArgUtil.NotNull(extensionStep, extensionStep.DisplayName);
Guid stepId = Guid.NewGuid();
extensionStep.ExecutionContext = jobContext.CreateChild(stepId, extensionStep.DisplayName, stepId.ToString("N"));
}
else if (step is ITaskRunner)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), StringUtil.Loc("PostJob", taskStep.DisplayName), taskStep.Task.Name, taskVariablesMapping[taskStep.Task.Id]);
}
}
#if OS_WINDOWS
// Add script post steps.
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var finallyScript = Environment.GetEnvironmentVariable("VSTS_AGENT_CLEANUP_INTERNAL_TEMP_HACK");
if (!string.IsNullOrEmpty(finallyScript) && context.Container == null)
{
var finallyStep = new ManagementScriptStep(
scriptPath: finallyScript,
condition: ExpressionManager.Always,
displayName: "Agent Cleanup");
Trace.Verbose($"Adding agent cleanup script step.");
finallyStep.Initialize(HostContext);
finallyStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), finallyStep.DisplayName, nameof(ManagementScriptStep));
finallyStep.Condition = ExpressionManager.Always;
finallyStep.AccessToken = systemConnection.Authorization.Parameters["AccessToken"];
initResult.PostJobStep.Add(finallyStep);
}
#endif
return(initResult);
}
catch (OperationCanceledException ex) when(jobContext.CancellationToken.IsCancellationRequested)
{
// Log the exception and cancel the JobExtension Initialization.
Trace.Error($"Caught cancellation exception from JobExtension Initialization: {ex}");
context.Error(ex);
context.Result = TaskResult.Canceled;
throw;
}
catch (Exception ex)
{
// Log the error and fail the JobExtension Initialization.
Trace.Error($"Caught exception from JobExtension Initialization: {ex}");
context.Error(ex);
context.Result = TaskResult.Failed;
throw;
}
finally
{
context.Section(StringUtil.Loc("StepFinishing", StringUtil.Loc("InitializeJob")));
context.Complete();
}
}
}
// download all required tasks.
// make sure all task's condition inputs are valid.
// build up three list of steps for jobrunner. (pre-job, job, post-job)
public async Task <JobInitializeResult> InitializeJob(IExecutionContext jobContext, AgentJobRequestMessage message)
{
Trace.Entering();
ArgUtil.NotNull(jobContext, nameof(jobContext));
ArgUtil.NotNull(message, nameof(message));
// create a new timeline record node for 'Initialize job'
IExecutionContext context = jobContext.CreateChild(Guid.NewGuid(), StringUtil.Loc("InitializeJob"));
JobInitializeResult initResult = new JobInitializeResult();
using (var register = jobContext.CancellationToken.Register(() => { context.CancelToken(); }))
{
try
{
context.Start();
context.Section(StringUtil.Loc("StepStarting", StringUtil.Loc("InitializeJob")));
// Give job extension a chance to initalize
Trace.Info($"Run initial step from extension {this.GetType().Name}.");
InitializeJobExtension(context);
// Download tasks if not already in the cache
Trace.Info("Downloading task definitions.");
var taskManager = HostContext.GetService <ITaskManager>();
await taskManager.DownloadAsync(context, message.Tasks);
// Parse all Task conditions.
Trace.Info("Parsing all task's condition inputs.");
var expression = HostContext.GetService <IExpressionManager>();
Dictionary <Guid, INode> taskConditionMap = new Dictionary <Guid, INode>();
foreach (var task in message.Tasks)
{
INode condition;
if (!string.IsNullOrEmpty(task.Condition))
{
context.Debug($"Task '{task.DisplayName}' has following condition: '{task.Condition}'.");
condition = expression.Parse(context, task.Condition);
}
else if (task.AlwaysRun)
{
condition = ExpressionManager.SucceededOrFailed;
}
else
{
condition = ExpressionManager.Succeeded;
}
taskConditionMap[task.InstanceId] = condition;
}
#if OS_WINDOWS
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var prepareScript = Environment.GetEnvironmentVariable("VSTS_AGENT_INIT_INTERNAL_TEMP_HACK");
if (!string.IsNullOrEmpty(prepareScript))
{
var prepareStep = new ManagementScriptStep(
scriptPath: prepareScript,
condition: ExpressionManager.Succeeded,
displayName: "Agent Initialization");
Trace.Verbose($"Adding agent init script step.");
prepareStep.Initialize(HostContext);
prepareStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), prepareStep.DisplayName);
prepareStep.AccessToken = message.Environment.SystemConnection.Authorization.Parameters["AccessToken"];
initResult.PreJobSteps.Add(prepareStep);
}
#endif
// build up 3 lists of steps, pre-job, job, post-job
Stack <IStep> postJobStepsBuilder = new Stack <IStep>();
Dictionary <Guid, Variables> taskVariablesMapping = new Dictionary <Guid, Variables>();
foreach (var taskInstance in message.Tasks)
{
var taskDefinition = taskManager.Load(taskInstance);
List <string> warnings;
taskVariablesMapping[taskInstance.InstanceId] = new Variables(HostContext, new Dictionary <string, string>(), message.Environment.MaskHints, out warnings);
// Add pre-job steps from Tasks
if (taskDefinition.Data?.PreJobExecution != null)
{
Trace.Info($"Adding Pre-Job {taskInstance.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.TaskInstance = taskInstance;
taskRunner.Stage = JobRunStage.PreJob;
taskRunner.Condition = taskConditionMap[taskInstance.InstanceId];
initResult.PreJobSteps.Add(taskRunner);
}
// Add execution steps from Tasks
if (taskDefinition.Data?.Execution != null)
{
Trace.Verbose($"Adding {taskInstance.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.TaskInstance = taskInstance;
taskRunner.Stage = JobRunStage.Main;
taskRunner.Condition = taskConditionMap[taskInstance.InstanceId];
initResult.JobSteps.Add(taskRunner);
}
// Add post-job steps from Tasks
if (taskDefinition.Data?.PostJobExecution != null)
{
Trace.Verbose($"Adding Post-Job {taskInstance.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.TaskInstance = taskInstance;
taskRunner.Stage = JobRunStage.PostJob;
taskRunner.Condition = taskConditionMap[taskInstance.InstanceId];
postJobStepsBuilder.Push(taskRunner);
}
}
// create task execution context for all pre-job steps from task
foreach (var step in initResult.PreJobSteps)
{
#if OS_WINDOWS
if (step is ManagementScriptStep)
{
continue;
}
#endif
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), StringUtil.Loc("PreJob", taskStep.DisplayName), taskVariablesMapping[taskStep.TaskInstance.InstanceId]);
}
// Add pre-job step from Extension
Trace.Info("Adding pre-job step from extension.");
var extensionPreJobStep = GetExtensionPreJobStep(jobContext);
if (extensionPreJobStep != null)
{
initResult.PreJobSteps.Add(extensionPreJobStep);
}
// create task execution context for all job steps from task
foreach (var step in initResult.JobSteps)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(taskStep.TaskInstance.InstanceId, taskStep.DisplayName, taskVariablesMapping[taskStep.TaskInstance.InstanceId]);
}
// Add post-job steps from Tasks
Trace.Info("Adding post-job steps from tasks.");
while (postJobStepsBuilder.Count > 0)
{
initResult.PostJobStep.Add(postJobStepsBuilder.Pop());
}
// create task execution context for all post-job steps from task
foreach (var step in initResult.PostJobStep)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), StringUtil.Loc("PostJob", taskStep.DisplayName), taskVariablesMapping[taskStep.TaskInstance.InstanceId]);
}
// Add post-job step from Extension
Trace.Info("Adding post-job step from extension.");
var extensionPostJobStep = GetExtensionPostJobStep(jobContext);
if (extensionPostJobStep != null)
{
initResult.PostJobStep.Add(extensionPostJobStep);
}
#if OS_WINDOWS
// Add script post steps.
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var finallyScript = Environment.GetEnvironmentVariable("VSTS_AGENT_CLEANUP_INTERNAL_TEMP_HACK");
if (!string.IsNullOrEmpty(finallyScript))
{
var finallyStep = new ManagementScriptStep(
scriptPath: finallyScript,
condition: ExpressionManager.Always,
displayName: "Agent Cleanup");
Trace.Verbose($"Adding agent cleanup script step.");
finallyStep.Initialize(HostContext);
finallyStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), finallyStep.DisplayName);
finallyStep.AccessToken = message.Environment.SystemConnection.Authorization.Parameters["AccessToken"];
initResult.PostJobStep.Add(finallyStep);
}
#endif
return(initResult);
}
catch (OperationCanceledException ex) when(jobContext.CancellationToken.IsCancellationRequested)
{
// Log the exception and cancel the JobExtension Initialization.
Trace.Error($"Caught cancellation exception from JobExtension Initialization: {ex}");
context.Error(ex);
context.Result = TaskResult.Canceled;
throw;
}
catch (Exception ex)
{
// Log the error and fail the JobExtension Initialization.
Trace.Error($"Caught exception from JobExtension Initialization: {ex}");
context.Error(ex);
context.Result = TaskResult.Failed;
throw;
}
finally
{
context.Section(StringUtil.Loc("StepFinishing", StringUtil.Loc("InitializeJob")));
context.Complete();
}
}
}
// download all required tasks.
// make sure all task's condition inputs are valid.
// build up three list of steps for jobrunner. (pre-job, job, post-job)
public async Task <List <IStep> > InitializeJob(IExecutionContext jobContext, Pipelines.AgentJobRequestMessage message)
{
Trace.Entering();
ArgUtil.NotNull(jobContext, nameof(jobContext));
ArgUtil.NotNull(message, nameof(message));
// create a new timeline record node for 'Initialize job'
IExecutionContext context = jobContext.CreateChild(Guid.NewGuid(), StringUtil.Loc("InitializeJob"), $"{nameof(JobExtension)}_Init");
List <IStep> preJobSteps = new List <IStep>();
List <IStep> jobSteps = new List <IStep>();
List <IStep> postJobSteps = new List <IStep>();
using (var register = jobContext.CancellationToken.Register(() => { context.CancelToken(); }))
{
try
{
context.Start();
context.Section(StringUtil.Loc("StepStarting", StringUtil.Loc("InitializeJob")));
// Set agent version variable.
context.SetVariable(Constants.Variables.Agent.Version, BuildConstants.AgentPackage.Version);
context.Output(StringUtil.Loc("AgentNameLog", context.Variables.Get(Constants.Variables.Agent.Name)));
context.Output(StringUtil.Loc("AgentMachineNameLog", context.Variables.Get(Constants.Variables.Agent.MachineName)));
context.Output(StringUtil.Loc("AgentVersion", BuildConstants.AgentPackage.Version));
// Machine specific setup info
OutputSetupInfo(context);
string imageVersion = System.Environment.GetEnvironmentVariable(Constants.ImageVersionVariable);
if (imageVersion != null)
{
context.Output(StringUtil.Loc("ImageVersionLog", imageVersion));
}
context.Output(StringUtil.Loc("UserNameLog", System.Environment.UserName));
// Print proxy setting information for better diagnostic experience
var agentWebProxy = HostContext.GetService <IVstsAgentWebProxy>();
if (!string.IsNullOrEmpty(agentWebProxy.ProxyAddress))
{
context.Output(StringUtil.Loc("AgentRunningBehindProxy", agentWebProxy.ProxyAddress));
}
// Give job extension a chance to initialize
Trace.Info($"Run initial step from extension {this.GetType().Name}.");
InitializeJobExtension(context, message?.Steps, message?.Workspace);
// Download tasks if not already in the cache
Trace.Info("Downloading task definitions.");
var taskManager = HostContext.GetService <ITaskManager>();
await taskManager.DownloadAsync(context, message.Steps);
// Parse all Task conditions.
Trace.Info("Parsing all task's condition inputs.");
var expression = HostContext.GetService <IExpressionManager>();
Dictionary <Guid, IExpressionNode> taskConditionMap = new Dictionary <Guid, IExpressionNode>();
foreach (var task in message.Steps.OfType <Pipelines.TaskStep>())
{
IExpressionNode condition;
if (!string.IsNullOrEmpty(task.Condition))
{
context.Debug($"Task '{task.DisplayName}' has following condition: '{task.Condition}'.");
condition = expression.Parse(context, task.Condition);
}
else
{
condition = ExpressionManager.Succeeded;
}
task.DisplayName = context.Variables.ExpandValue(nameof(task.DisplayName), task.DisplayName);
taskConditionMap[task.Id] = condition;
}
context.Output("Checking job knob settings.");
foreach (var knob in Knob.GetAllKnobsFor <AgentKnobs>())
{
var value = knob.GetValue(jobContext);
if (value.Source.GetType() != typeof(BuiltInDefaultKnobSource))
{
var tag = "";
if (knob.IsDeprecated)
{
tag = "(DEPRECATED)";
}
else if (knob.IsExperimental)
{
tag = "(EXPERIMENTAL)";
}
var outputLine = $" Knob: {knob.Name} = {value.AsString()} Source: {value.Source.GetDisplayString()} {tag}";
if (knob.IsDeprecated)
{
context.Warning(outputLine);
}
else
{
context.Output(outputLine);
}
}
}
context.Output("Finished checking job knob settings.");
if (PlatformUtil.RunningOnWindows)
{
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var prepareScript = Environment.GetEnvironmentVariable("VSTS_AGENT_INIT_INTERNAL_TEMP_HACK");
ServiceEndpoint systemConnection = context.Endpoints.Single(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
if (!string.IsNullOrEmpty(prepareScript) && context.StepTarget() is HostInfo)
{
var prepareStep = new ManagementScriptStep(
scriptPath: prepareScript,
condition: ExpressionManager.Succeeded,
displayName: "Agent Initialization");
Trace.Verbose($"Adding agent init script step.");
prepareStep.Initialize(HostContext);
prepareStep.ExecutionContext = jobContext?.CreateChild(Guid.NewGuid(), prepareStep.DisplayName, nameof(ManagementScriptStep));
prepareStep.AccessToken = systemConnection.Authorization.Parameters["AccessToken"];
prepareStep.Condition = ExpressionManager.Succeeded;
preJobSteps.Add(prepareStep);
}
}
// build up 3 lists of steps, pre-job, job, post-job
Stack <IStep> postJobStepsBuilder = new Stack <IStep>();
Dictionary <Guid, Variables> taskVariablesMapping = new Dictionary <Guid, Variables>();
if (context.Containers.Count > 0 || context.SidecarContainers.Count > 0)
{
var containerProvider = HostContext.GetService <IContainerOperationProvider>();
var containers = new List <ContainerInfo>();
containers.AddRange(context.Containers);
containers.AddRange(context.SidecarContainers);
preJobSteps.Add(new JobExtensionRunner(runAsync: containerProvider.StartContainersAsync,
condition: ExpressionManager.Succeeded,
displayName: StringUtil.Loc("InitializeContainer"),
data: (object)containers));
postJobStepsBuilder.Push(new JobExtensionRunner(runAsync: containerProvider.StopContainersAsync,
condition: ExpressionManager.Always,
displayName: StringUtil.Loc("StopContainer"),
data: (object)containers));
}
Dictionary <Guid, List <TaskRestrictions> > taskRestrictionsMap = new Dictionary <Guid, List <TaskRestrictions> >();
foreach (var task in message?.Steps.OfType <Pipelines.TaskStep>())
{
var taskDefinition = taskManager.Load(task);
// Collect any task restrictions from the definition or step
var restrictions = new List <TaskRestrictions>();
if (taskDefinition.Data.Restrictions != null)
{
restrictions.Add(taskDefinition.Data.Restrictions);
}
if (string.Equals(WellKnownStepTargetStrings.Restricted, task.Target?.Commands, StringComparison.OrdinalIgnoreCase))
{
restrictions.Add(new TaskRestrictions()
{
Commands = new TaskCommandRestrictions()
{
Mode = TaskCommandMode.Restricted
}
});
}
if (task.Target?.SettableVariables != null)
{
restrictions.Add(new TaskRestrictions()
{
SettableVariables = task.Target.SettableVariables
});
}
taskRestrictionsMap[task.Id] = restrictions;
List <string> warnings;
taskVariablesMapping[task.Id] = new Variables(HostContext, new Dictionary <string, VariableValue>(), out warnings);
// Add pre-job steps from Tasks
if (taskDefinition.Data?.PreJobExecution != null)
{
Trace.Info($"Adding Pre-Job {task.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.Task = task;
taskRunner.Stage = JobRunStage.PreJob;
taskRunner.Condition = taskConditionMap[task.Id];
preJobSteps.Add(taskRunner);
}
// Add execution steps from Tasks
if (taskDefinition.Data?.Execution != null)
{
Trace.Verbose($"Adding {task.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.Task = task;
taskRunner.Stage = JobRunStage.Main;
taskRunner.Condition = taskConditionMap[task.Id];
jobSteps.Add(taskRunner);
}
// Add post-job steps from Tasks
if (taskDefinition.Data?.PostJobExecution != null)
{
Trace.Verbose($"Adding Post-Job {task.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.Task = task;
taskRunner.Stage = JobRunStage.PostJob;
taskRunner.Condition = ExpressionManager.Always;
postJobStepsBuilder.Push(taskRunner);
}
}
// Add pre-job step from Extension
Trace.Info("Adding pre-job step from extension.");
var extensionPreJobStep = GetExtensionPreJobStep(jobContext);
if (extensionPreJobStep != null)
{
preJobSteps.Add(extensionPreJobStep);
}
// Add post-job step from Extension
Trace.Info("Adding post-job step from extension.");
var extensionPostJobStep = GetExtensionPostJobStep(jobContext);
if (extensionPostJobStep != null)
{
postJobStepsBuilder.Push(extensionPostJobStep);
}
ArgUtil.NotNull(jobContext, nameof(jobContext)); // I am not sure why this is needed, but static analysis flagged all uses of jobContext below this point
// create execution context for all pre-job steps
foreach (var step in preJobSteps)
{
if (PlatformUtil.RunningOnWindows && step is ManagementScriptStep)
{
continue;
}
if (step is JobExtensionRunner)
{
JobExtensionRunner extensionStep = step as JobExtensionRunner;
ArgUtil.NotNull(extensionStep, extensionStep.DisplayName);
Guid stepId = Guid.NewGuid();
extensionStep.ExecutionContext = jobContext.CreateChild(stepId, extensionStep.DisplayName, stepId.ToString("N"));
}
else if (step is ITaskRunner)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(
Guid.NewGuid(),
StringUtil.Loc("PreJob", taskStep.DisplayName),
taskStep.Task.Name,
taskVariablesMapping[taskStep.Task.Id],
outputForward: true,
taskRestrictions: taskRestrictionsMap[taskStep.Task.Id]);
}
}
// create task execution context for all job steps from task
foreach (var step in jobSteps)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(
taskStep.Task.Id,
taskStep.DisplayName,
taskStep.Task.Name,
taskVariablesMapping[taskStep.Task.Id],
outputForward: true,
taskRestrictions: taskRestrictionsMap[taskStep.Task.Id]);
}
// Add post-job steps from Tasks
Trace.Info("Adding post-job steps from tasks.");
while (postJobStepsBuilder.Count > 0)
{
postJobSteps.Add(postJobStepsBuilder.Pop());
}
// create task execution context for all post-job steps from task
foreach (var step in postJobSteps)
{
if (step is JobExtensionRunner)
{
JobExtensionRunner extensionStep = step as JobExtensionRunner;
ArgUtil.NotNull(extensionStep, extensionStep.DisplayName);
Guid stepId = Guid.NewGuid();
extensionStep.ExecutionContext = jobContext.CreateChild(stepId, extensionStep.DisplayName, stepId.ToString("N"));
}
else if (step is ITaskRunner)
{
ITaskRunner taskStep = step as ITaskRunner;
ArgUtil.NotNull(taskStep, step.DisplayName);
taskStep.ExecutionContext = jobContext.CreateChild(
Guid.NewGuid(),
StringUtil.Loc("PostJob", taskStep.DisplayName),
taskStep.Task.Name,
taskVariablesMapping[taskStep.Task.Id],
outputForward: true,
taskRestrictions: taskRestrictionsMap[taskStep.Task.Id]);
}
}
if (PlatformUtil.RunningOnWindows)
{
// Add script post steps.
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var finallyScript = Environment.GetEnvironmentVariable("VSTS_AGENT_CLEANUP_INTERNAL_TEMP_HACK");
if (!string.IsNullOrEmpty(finallyScript) && context.StepTarget() is HostInfo)
{
var finallyStep = new ManagementScriptStep(
scriptPath: finallyScript,
condition: ExpressionManager.Always,
displayName: "Agent Cleanup");
Trace.Verbose($"Adding agent cleanup script step.");
finallyStep.Initialize(HostContext);
finallyStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), finallyStep.DisplayName, nameof(ManagementScriptStep));
finallyStep.Condition = ExpressionManager.Always;
ServiceEndpoint systemConnection = context.Endpoints.Single(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
finallyStep.AccessToken = systemConnection.Authorization.Parameters["AccessToken"];
postJobSteps.Add(finallyStep);
}
}
List <IStep> steps = new List <IStep>();
steps.AddRange(preJobSteps);
steps.AddRange(jobSteps);
steps.AddRange(postJobSteps);
// Start agent log plugin host process
var logPlugin = HostContext.GetService <IAgentLogPlugin>();
await logPlugin.StartAsync(context, steps, jobContext.CancellationToken);
// Prepare for orphan process cleanup
_processCleanup = jobContext.Variables.GetBoolean("process.clean") ?? true;
if (_processCleanup)
{
// Set the VSTS_PROCESS_LOOKUP_ID env variable.
context.SetVariable(Constants.ProcessLookupId, _processLookupId, false, false);
context.Output("Start tracking orphan processes.");
// Take a snapshot of current running processes
Dictionary <int, Process> processes = SnapshotProcesses();
foreach (var proc in processes)
{
// Pid_ProcessName
_existingProcesses.Add($"{proc.Key}_{proc.Value.ProcessName}");
}
}
_taskKeyCleanup = jobContext.Variables.GetBoolean("process.cleanTaskKey") ?? true;
return(steps);
}
catch (OperationCanceledException ex) when(jobContext.CancellationToken.IsCancellationRequested)
{
// Log the exception and cancel the JobExtension Initialization.
Trace.Error($"Caught cancellation exception from JobExtension Initialization: {ex}");
context.Error(ex);
context.Result = TaskResult.Canceled;
throw;
}
catch (Exception ex)
{
// Log the error and fail the JobExtension Initialization.
Trace.Error($"Caught exception from JobExtension Initialization: {ex}");
context.Error(ex);
context.Result = TaskResult.Failed;
throw;
}
finally
{
context.Section(StringUtil.Loc("StepFinishing", StringUtil.Loc("InitializeJob")));
context.Complete();
}
}
}
public async Task <TaskResult> RunAsync(AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken)
{
// Validate parameters.
Trace.Entering();
ArgUtil.NotNull(message, nameof(message));
ArgUtil.NotNull(message.Environment, nameof(message.Environment));
ArgUtil.NotNull(message.Environment.Variables, nameof(message.Environment.Variables));
ArgUtil.NotNull(message.Tasks, nameof(message.Tasks));
Trace.Info("Job ID {0}", message.JobId);
// System.AccessToken
if (message.Environment.Variables.ContainsKey(Constants.Variables.System.EnableAccessToken) &&
StringUtil.ConvertToBoolean(message.Environment.Variables[Constants.Variables.System.EnableAccessToken]))
{
// TODO: get access token use Util Method
message.Environment.Variables[Constants.Variables.System.AccessToken] = message.Environment.SystemConnection.Authorization.Parameters["AccessToken"];
}
// Make sure SystemConnection Url and Endpoint Url match Config Url base
ReplaceConfigUriBaseInJobRequestMessage(message);
// Setup the job server and job server queue.
var jobServer = HostContext.GetService <IJobServer>();
VssCredentials jobServerCredential = ApiUtil.GetVssCredential(message.Environment.SystemConnection);
Uri jobServerUrl = message.Environment.SystemConnection.Url;
Trace.Info($"Creating job server with URL: {jobServerUrl}");
// jobServerQueue is the throttling reporter.
_jobServerQueue = HostContext.GetService <IJobServerQueue>();
VssConnection jobConnection = ApiUtil.CreateConnection(jobServerUrl, jobServerCredential, new DelegatingHandler[] { new ThrottlingReportHandler(_jobServerQueue) });
await jobServer.ConnectAsync(jobConnection);
_jobServerQueue.Start(message);
IExecutionContext jobContext = null;
try
{
// Create the job execution context.
jobContext = HostContext.CreateService <IExecutionContext>();
jobContext.InitializeJob(message, jobRequestCancellationToken);
Trace.Info("Starting the job execution context.");
jobContext.Start();
jobContext.Section(StringUtil.Loc("StepStarting", message.JobName));
// Set agent version into ExecutionContext's variables dictionary.
jobContext.Variables.Set(Constants.Variables.Agent.Version, Constants.Agent.Version);
// Print agent version into log for better diagnostic experience
jobContext.Output(StringUtil.Loc("AgentVersion", Constants.Agent.Version));
// Print proxy setting information for better diagnostic experience
var proxyConfig = HostContext.GetService <IProxyConfiguration>();
if (!string.IsNullOrEmpty(proxyConfig.ProxyUrl))
{
jobContext.Output(StringUtil.Loc("AgentRunningBehindProxy", proxyConfig.ProxyUrl));
}
// Validate directory permissions.
string workDirectory = HostContext.GetDirectory(WellKnownDirectory.Work);
Trace.Info($"Validating directory permissions for: '{workDirectory}'");
try
{
Directory.CreateDirectory(workDirectory);
IOUtil.ValidateExecutePermission(workDirectory);
}
catch (Exception ex)
{
Trace.Error(ex);
jobContext.Error(ex);
return(await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Failed));
}
// Set agent variables.
AgentSettings settings = HostContext.GetService <IConfigurationStore>().GetSettings();
jobContext.Variables.Set(Constants.Variables.Agent.Id, settings.AgentId.ToString(CultureInfo.InvariantCulture));
jobContext.Variables.Set(Constants.Variables.Agent.HomeDirectory, IOUtil.GetRootPath());
jobContext.Variables.Set(Constants.Variables.Agent.JobName, message.JobName);
jobContext.Variables.Set(Constants.Variables.Agent.MachineName, Environment.MachineName);
jobContext.Variables.Set(Constants.Variables.Agent.Name, settings.AgentName);
jobContext.Variables.Set(Constants.Variables.Agent.RootDirectory, IOUtil.GetWorkPath(HostContext));
#if OS_WINDOWS
jobContext.Variables.Set(Constants.Variables.Agent.ServerOMDirectory, Path.Combine(IOUtil.GetExternalsPath(), Constants.Path.ServerOMDirectory));
#endif
jobContext.Variables.Set(Constants.Variables.Agent.WorkFolder, IOUtil.GetWorkPath(HostContext));
jobContext.Variables.Set(Constants.Variables.System.WorkFolder, IOUtil.GetWorkPath(HostContext));
// prefer task definitions url, then TFS collection url, then TFS account url
var taskServer = HostContext.GetService <ITaskServer>();
Uri taskServerUri = null;
if (!string.IsNullOrEmpty(jobContext.Variables.System_TaskDefinitionsUri))
{
taskServerUri = new Uri(jobContext.Variables.System_TaskDefinitionsUri);
}
else if (!string.IsNullOrEmpty(jobContext.Variables.System_TFCollectionUrl))
{
taskServerUri = new Uri(jobContext.Variables.System_TFCollectionUrl);
}
var taskServerCredential = ApiUtil.GetVssCredential(message.Environment.SystemConnection);
if (taskServerUri != null)
{
Trace.Info($"Creating task server with {taskServerUri}");
await taskServer.ConnectAsync(ApiUtil.CreateConnection(taskServerUri, taskServerCredential));
}
if (taskServerUri == null || !await taskServer.TaskDefinitionEndpointExist(jobRequestCancellationToken))
{
Trace.Info($"Can't determine task download url from JobMessage or the endpoint doesn't exist.");
var configStore = HostContext.GetService <IConfigurationStore>();
taskServerUri = new Uri(configStore.GetSettings().ServerUrl);
Trace.Info($"Recreate task server with configuration server url: {taskServerUri}");
await taskServer.ConnectAsync(ApiUtil.CreateConnection(taskServerUri, taskServerCredential));
}
// Expand the endpoint data values.
foreach (ServiceEndpoint endpoint in jobContext.Endpoints)
{
jobContext.Variables.ExpandValues(target: endpoint.Data);
VarUtil.ExpandEnvironmentVariables(HostContext, target: endpoint.Data);
}
// Get the job extensions.
Trace.Info("Getting job extensions.");
string hostType = jobContext.Variables.System_HostType;
var extensionManager = HostContext.GetService <IExtensionManager>();
IJobExtension[] extensions =
(extensionManager.GetExtensions <IJobExtension>() ?? new List <IJobExtension>())
.Where(x => string.Equals(x.HostType, hostType, StringComparison.OrdinalIgnoreCase))
.ToArray();
List <IStep> steps = new List <IStep>();
#if OS_WINDOWS
// Init script job extention.
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var prepareScript = Environment.GetEnvironmentVariable("VSTS_AGENT_INIT_INTERNAL_TEMP_HACK");
if (!string.IsNullOrEmpty(prepareScript))
{
var prepareStep = new ManagementScriptStep(
scriptPath: prepareScript,
continueOnError: false,
critical: true,
displayName: "Agent Initialization",
enabled: true,
@finally: false);
Trace.Verbose($"Adding agent init script step.");
prepareStep.Initialize(HostContext);
prepareStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), prepareStep.DisplayName);
prepareStep.AccessToken = message.Environment.SystemConnection.Authorization.Parameters["AccessToken"];
steps.Add(prepareStep);
}
#endif
// Add the prepare steps.
Trace.Info("Adding job prepare extensions.");
foreach (IJobExtension extension in extensions)
{
if (extension.PrepareStep != null)
{
Trace.Verbose($"Adding {extension.GetType().Name}.{nameof(extension.PrepareStep)}.");
extension.PrepareStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), extension.PrepareStep.DisplayName);
steps.Add(extension.PrepareStep);
}
}
// Add the task steps.
Trace.Info("Adding tasks.");
foreach (TaskInstance taskInstance in message.Tasks)
{
Trace.Verbose($"Adding {taskInstance.DisplayName}.");
var taskRunner = HostContext.CreateService <ITaskRunner>();
taskRunner.ExecutionContext = jobContext.CreateChild(taskInstance.InstanceId, taskInstance.DisplayName);
taskRunner.TaskInstance = taskInstance;
steps.Add(taskRunner);
}
// Add the finally steps.
Trace.Info("Adding job finally extensions.");
foreach (IJobExtension extension in extensions)
{
if (extension.FinallyStep != null)
{
Trace.Verbose($"Adding {extension.GetType().Name}.{nameof(extension.FinallyStep)}.");
extension.FinallyStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), extension.FinallyStep.DisplayName);
steps.Add(extension.FinallyStep);
}
}
#if OS_WINDOWS
// Add script post steps.
// This is for internal testing and is not publicly supported. This will be removed from the agent at a later time.
var finallyScript = Environment.GetEnvironmentVariable("VSTS_AGENT_CLEANUP_INTERNAL_TEMP_HACK");
if (!string.IsNullOrEmpty(finallyScript))
{
var finallyStep = new ManagementScriptStep(
scriptPath: finallyScript,
continueOnError: false,
critical: true,
displayName: "Agent Cleanup",
enabled: true,
@finally: true);
Trace.Verbose($"Adding agent cleanup script step.");
finallyStep.Initialize(HostContext);
finallyStep.ExecutionContext = jobContext.CreateChild(Guid.NewGuid(), finallyStep.DisplayName);
finallyStep.AccessToken = message.Environment.SystemConnection.Authorization.Parameters["AccessToken"];
steps.Add(finallyStep);
}
#endif
// Download tasks if not already in the cache
Trace.Info("Downloading task definitions.");
var taskManager = HostContext.GetService <ITaskManager>();
try
{
await taskManager.DownloadAsync(jobContext, message.Tasks);
}
catch (OperationCanceledException ex) when(jobContext.CancellationToken.IsCancellationRequested)
{
// set the job to canceled
// don't log error issue to job ExecutionContext, since server owns the job level issue
Trace.Error($"Caught exception: {ex}");
return(await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Canceled));
}
catch (Exception ex)
{
// Log the error and fail the job.
Trace.Error($"Caught exception from {nameof(TaskManager)}: {ex}");
jobContext.Error(ex);
return(await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Failed));
}
// Run the steps.
var stepsRunner = HostContext.GetService <IStepsRunner>();
try
{
await stepsRunner.RunAsync(jobContext, steps);
}
catch (OperationCanceledException ex) when(jobContext.CancellationToken.IsCancellationRequested)
{
// set the job to canceled
// don't log error issue to job ExecutionContext, since server owns the job level issue
Trace.Error($"Caught exception: {ex}");
return(await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Canceled));
}
catch (Exception ex)
{
// Log the error and fail the job.
Trace.Error($"Caught exception from {nameof(StepsRunner)}: {ex}");
jobContext.Error(ex);
return(await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Failed));
}
Trace.Info($"Job result: {jobContext.Result}");
// Complete the job.
Trace.Info("Completing the job execution context.");
return(await CompleteJobAsync(jobServer, jobContext, message));
}
finally
{
await ShutdownQueue();
}
}
