// executes the step
internal async Task <InstallSetupResult> ExecuteStepAsync(InstallSetupStep step, object instruction)
{
using (_proflog.TraceDuration <InstallApiController>($"Executing installation step: '{step.Name}'.",
"Step completed"))
{
var modelAttempt = instruction.TryConvertTo(step.StepType);
if (!modelAttempt.Success)
{
throw new InvalidCastException(
$"Cannot cast/convert {step.GetType().FullName} into {step.StepType.FullName}");
}
var model = modelAttempt.Result;
var genericStepType = typeof(InstallSetupStep <>);
Type[] typeArgs = { step.StepType };
var typedStepType = genericStepType.MakeGenericType(typeArgs);
try
{
var method = typedStepType.GetMethods().Single(x => x.Name == "ExecuteAsync");
var task = (Task <InstallSetupResult>)method.Invoke(step, new[] { model });
return(await task);
}
catch (Exception ex)
{
_logger.LogError(ex, "Installation step {Step} failed.", step.Name);
throw;
}
}
}
// determines whether the step requires execution
internal bool StepRequiresExecution(InstallSetupStep step, object instruction)
{
if (step == null)
{
throw new ArgumentNullException(nameof(step));
}
var modelAttempt = instruction.TryConvertTo(step.StepType);
if (!modelAttempt.Success)
{
throw new InvalidCastException(
$"Cannot cast/convert {step.GetType().FullName} into {step.StepType.FullName}");
}
var model = modelAttempt.Result;
var genericStepType = typeof(InstallSetupStep <>);
Type[] typeArgs = { step.StepType };
var typedStepType = genericStepType.MakeGenericType(typeArgs);
try
{
var method = typedStepType.GetMethods().Single(x => x.Name == "RequiresExecution");
return((bool)method.Invoke(step, new[] { model }));
}
catch (Exception ex)
{
_logger.LogError(ex, "Checking if step requires execution ({Step}) failed.",
step.Name);
throw;
}
}