/// <summary>
/// Given a task name and a list of assemblies, this helper method checks if the task exists in any of the assemblies.
/// </summary>
/// <remarks>
/// If the task name is fully qualified, then a match (if any) is unambiguous; otherwise, if there are multiple tasks with
/// the same name in different namespaces/assemblies, the first task found will be returned.
/// </remarks>
/// <param name="taskName"></param>
/// <param name="taskAssemblies"></param>
/// <param name="taskProjectFile"></param>
/// <param name="taskNode"></param>
/// <param name="loggingServices"></param>
/// <param name="buildEventContext"></param>
/// <param name="taskClass"></param>
/// <returns>true, if task is successfully loaded</returns>
private bool GetTaskFromAssembly
(
string taskName,
ArrayList taskAssemblies,
string taskProjectFile,
XmlNode taskNode,
EngineLoggingServices loggingServices,
BuildEventContext buildEventContext,
out LoadedType taskClass
)
{
taskClass = null;
foreach (AssemblyLoadInfo assembly in taskAssemblies)
{
try
{
taskClass = typeLoader.Load(taskName, assembly);
}
catch (TargetInvocationException e)
{
// Exception thrown by the called code itself
// Log the stack, so the task vendor can fix their code
ProjectErrorUtilities.VerifyThrowInvalidProject(false, taskNode, "TaskLoadFailure", taskName, assembly.ToString(), Environment.NewLine + e.InnerException.ToString());
}
catch (ReflectionTypeLoadException e)
{
// ReflectionTypeLoadException.LoaderExceptions may contain nulls
foreach (Exception exception in e.LoaderExceptions)
{
if (exception != null)
{
loggingServices.LogError(buildEventContext, new BuildEventFileInfo(taskProjectFile), "TaskLoadFailure", taskName, assembly.ToString(), exception.Message);
}
}
ProjectErrorUtilities.VerifyThrowInvalidProject(false, taskNode, "TaskLoadFailure", taskName, assembly.ToString(), e.Message);
}
catch (Exception e) // Catching Exception, but rethrowing unless it's a well-known exception.
{
if (ExceptionHandling.NotExpectedReflectionException(e))
{
throw;
}
ProjectErrorUtilities.VerifyThrowInvalidProject(false, taskNode, "TaskLoadFailure", taskName, assembly.ToString(), e.Message);
}
if (taskClass != null)
{
return(true);
}
}
return(false);
}
/// <summary>
/// Receives any errors that occur while validating the project's schema.
/// </summary>
/// <owner>RGoel</owner>
/// <param name="sender"></param>
/// <param name="args"></param>
private void OnSchemaValidationError(object sender, ValidationEventArgs args)
{
this.syntaxError = true;
// We should handle empty URI specially, because Uri class does not allow to instantiate with empty string.
string filePath = String.Empty;
if (args.Exception.SourceUri.Length != 0)
{
filePath = (new Uri(args.Exception.SourceUri)).LocalPath;
}
engineLoggingServices.LogError(buildEventContext, "SubCategoryForSchemaValidationErrors",
new BuildEventFileInfo(filePath, args.Exception.LineNumber, args.Exception.LinePosition),
"SchemaValidationError", args.Exception.Message);
}
/// <summary>
/// Given a task name and a list of assemblies, this helper method checks if the task exists in any of the assemblies.
/// </summary>
/// <remarks>
/// If the task name is fully qualified, then a match (if any) is unambiguous; otherwise, if there are multiple tasks with
/// the same name in different namespaces/assemblies, the first task found will be returned.
/// </remarks>
/// <param name="taskName"></param>
/// <param name="taskAssemblies"></param>
/// <param name="taskProjectFile"></param>
/// <param name="taskNode"></param>
/// <param name="loggingServices"></param>
/// <param name="buildEventContext"></param>
/// <param name="taskClass"></param>
/// <returns>true, if task is successfully loaded</returns>
private bool GetTaskFromAssembly
(
string taskName,
ArrayList taskAssemblies,
string taskProjectFile,
XmlNode taskNode,
EngineLoggingServices loggingServices,
BuildEventContext buildEventContext,
out LoadedType taskClass
)
{
taskClass = null;
foreach (AssemblyLoadInfo assembly in taskAssemblies)
{
try
{
taskClass = typeLoader.Load(taskName, assembly);
}
catch (TargetInvocationException e)
{
// Exception thrown by the called code itself
// Log the stack, so the task vendor can fix their code
ProjectErrorUtilities.VerifyThrowInvalidProject(false, taskNode, "TaskLoadFailure", taskName, assembly.ToString(), Environment.NewLine + e.InnerException.ToString());
}
catch (ReflectionTypeLoadException e)
{
// ReflectionTypeLoadException.LoaderExceptions may contain nulls
foreach (Exception exception in e.LoaderExceptions)
{
if (exception != null)
{
loggingServices.LogError(buildEventContext, new BuildEventFileInfo(taskProjectFile), "TaskLoadFailure", taskName, assembly.ToString(), exception.Message);
}
}
ProjectErrorUtilities.VerifyThrowInvalidProject(false, taskNode, "TaskLoadFailure", taskName, assembly.ToString(), e.Message);
}
catch (Exception e) // Catching Exception, but rethrowing unless it's a well-known exception.
{
if (ExceptionHandling.NotExpectedReflectionException(e))
throw;
ProjectErrorUtilities.VerifyThrowInvalidProject(false, taskNode, "TaskLoadFailure", taskName, assembly.ToString(), e.Message);
}
if (taskClass != null)
{
return true;
}
}
return false;
}