private void ReloadScript()
{
// Reset cached function
_functionLoader.Reset();
TraceOnPrimaryHost(string.Format(CultureInfo.InvariantCulture, "Script for function '{0}' changed. Reloading.", Metadata.Name), TraceLevel.Info);
ImmutableArray <Diagnostic> compilationResult = ImmutableArray <Diagnostic> .Empty;
FunctionSignature signature = null;
try
{
ICompilation compilation = _compilationService.GetFunctionCompilation(Metadata);
compilationResult = compilation.GetDiagnostics();
signature = compilation.GetEntryPointSignature(_functionEntryPointResolver);
compilationResult = ValidateFunctionBindingArguments(signature, _triggerInputName, _inputBindings, _outputBindings, compilationResult.ToBuilder());
}
catch (CompilationErrorException exc)
{
compilationResult = AddFunctionDiagnostics(compilationResult.AddRange(exc.Diagnostics));
}
TraceCompilationDiagnostics(compilationResult, LogTargets.User);
bool compilationSucceeded = !compilationResult.Any(d => d.Severity == DiagnosticSeverity.Error);
TraceOnPrimaryHost(string.Format(CultureInfo.InvariantCulture, "Compilation {0}.", compilationSucceeded ? "succeeded" : "failed"), TraceLevel.Info);
// If the compilation succeeded, AND:
// - We haven't cached a function (failed to compile on load), OR
// - We're referencing local function types (i.e. POCOs defined in the function) AND Our our function signature has changed
// Restart our host.
if (compilationSucceeded &&
(_functionSignature == null ||
(_functionSignature.HasLocalTypeReference || !_functionSignature.Equals(signature))))
{
Host.RestartEvent.Set();
}
}
private async Task <MethodInfo> CreateFunctionTarget(CancellationToken cancellationToken)
{
try
{
await VerifyPackageReferencesAsync();
string eventName = string.Format(MetricEventNames.FunctionCompileLatencyByLanguageFormat, _compilationService.Language);
using (_metricsLogger.LatencyEvent(eventName, _functionMetadata.Name))
{
IDotNetCompilation compilation = await _compilationService.GetFunctionCompilationAsync(Metadata);
DotNetCompilationResult compilationResult = await compilation.EmitAsync(cancellationToken);
Assembly assembly = compilationResult.Load(Metadata, _metadataResolver, FunctionLogger);
FunctionSignature functionSignature = compilation.GetEntryPointSignature(_functionEntryPointResolver, assembly);
ImmutableArray <Diagnostic> bindingDiagnostics = ValidateFunctionBindingArguments(functionSignature, _triggerInputName, _inputBindings, _outputBindings, throwIfFailed: true);
TraceCompilationDiagnostics(bindingDiagnostics);
_compilerErrorCount = 0;
// Set our function entry point signature
_functionSignature = functionSignature;
return(_functionSignature.GetMethod(assembly));
}
}
catch (CompilationErrorException exc)
{
ImmutableArray <Diagnostic> diagnostics = AddFunctionDiagnostics(exc.Diagnostics);
// Here we only need to trace to system logs
TraceCompilationDiagnostics(diagnostics, LogTargets.System);
throw new CompilationErrorException(exc.Message, diagnostics);
}
}
public FunctionSignature GetEntryPointSignature(IFunctionEntryPointResolver entryPointResolver)
{
EnsureAssemblyOption();
// Scrape the compiled assembly for entry points
IList <MethodReference <MethodInfo> > methods =
_assemblyOption.Value.GetTypes().SelectMany(t =>
t.GetMethods().Select(m =>
new MethodReference <MethodInfo>(m.Name, m.IsPublic, m))).ToList();
MethodInfo entryPointReference = entryPointResolver.GetFunctionEntryPoint(methods).Value;
// For F#, this currently creates a malformed signautre with fewer parameter symbols than parameter names.
// For validation we only need the parameter names. The implementation of DotNetFunctionSignature copes with the
// lists having different lengths.
var parameters = entryPointReference.GetParameters().Select(x => new FunctionParameter(x.Name, x.ParameterType.FullName, x.IsOptional, GetParameterRefKind(x)));
// For F#, we always set this to true for now.
bool hasLocalTypeReference = true;
var signature = new FunctionSignature(entryPointReference.DeclaringType.Name, entryPointReference.Name, parameters.ToImmutableArray(), hasLocalTypeReference);
return(signature);
}
private async Task <MethodInfo> CreateFunctionTarget(CancellationToken cancellationToken)
{
try
{
await VerifyPackageReferencesAsync();
string eventName = string.Format(MetricEventNames.FunctionCompileLatencyByLanguageFormat, _compilationService.Language);
using (_metricsLogger.LatencyEvent(eventName))
{
ICompilation compilation = _compilationService.GetFunctionCompilation(Metadata);
Assembly assembly = compilation.EmitAndLoad(cancellationToken);
_assemblyLoader.CreateOrUpdateContext(Metadata, assembly, _metadataResolver, TraceWriter);
FunctionSignature functionSignature = compilation.GetEntryPointSignature(_functionEntryPointResolver);
ImmutableArray <Diagnostic> bindingDiagnostics = ValidateFunctionBindingArguments(functionSignature, _triggerInputName, _inputBindings, _outputBindings, throwIfFailed: true);
TraceCompilationDiagnostics(bindingDiagnostics);
// Set our function entry point signature
_functionSignature = functionSignature;
System.Reflection.TypeInfo scriptType = assembly.DefinedTypes
.FirstOrDefault(t => string.Compare(t.Name, functionSignature.ParentTypeName, StringComparison.Ordinal) == 0);
return(_functionEntryPointResolver.GetFunctionEntryPoint(scriptType.DeclaredMethods.ToList()));
}
}
catch (CompilationErrorException exc)
{
ImmutableArray <Diagnostic> diagnostics = AddFunctionDiagnostics(exc.Diagnostics);
// Here we only need to trace to system logs
TraceCompilationDiagnostics(diagnostics, LogTargets.System);
throw new CompilationErrorException(exc.Message, diagnostics);
}
}