public virtual bool TryCreate(FunctionMetadata functionMetadata, out FunctionDescriptor functionDescriptor)
{
if (functionMetadata == null)
{
throw new InvalidOperationException("functionMetadata");
}
functionDescriptor = null;
// Default the trigger binding name if a name hasn't
// been specified
// TODO: Remove this logic and always require it to be explicitly
// specified?
foreach (var binding in functionMetadata.Bindings.Where(p => p.IsTrigger))
{
if (string.IsNullOrEmpty(binding.Name))
{
if (binding.Type == BindingType.HttpTrigger)
{
binding.Name = DefaultHttpInputParameterName;
}
else
{
binding.Name = DefaultInputParameterName;
}
}
}
// parse the bindings
Collection <FunctionBinding> inputBindings = FunctionBinding.GetBindings(Config, functionMetadata.InputBindings, FileAccess.Read);
Collection <FunctionBinding> outputBindings = FunctionBinding.GetBindings(Config, functionMetadata.OutputBindings, FileAccess.Write);
BindingMetadata triggerMetadata = functionMetadata.InputBindings.FirstOrDefault(p => p.IsTrigger);
string scriptFilePath = Path.Combine(Config.RootScriptPath, functionMetadata.ScriptFile);
IFunctionInvoker invoker = null;
try
{
invoker = CreateFunctionInvoker(scriptFilePath, triggerMetadata, functionMetadata, inputBindings, outputBindings);
Collection <CustomAttributeBuilder> methodAttributes = new Collection <CustomAttributeBuilder>();
Collection <ParameterDescriptor> parameters = GetFunctionParameters(invoker, functionMetadata, triggerMetadata, methodAttributes, inputBindings, outputBindings);
functionDescriptor = new FunctionDescriptor(functionMetadata.Name, invoker, functionMetadata, parameters, methodAttributes);
return(true);
}
catch (Exception)
{
IDisposable disposableInvoker = invoker as IDisposable;
if (disposableInvoker != null)
{
disposableInvoker.Dispose();
}
throw;
}
}
public virtual bool TryCreate(FunctionMetadata functionMetadata, out FunctionDescriptor functionDescriptor)
{
if (functionMetadata == null)
{
throw new InvalidOperationException("functionMetadata");
}
ValidateFunction(functionMetadata);
// parse the bindings
Collection <FunctionBinding> inputBindings = FunctionBinding.GetBindings(Config, BindingProviders, functionMetadata.InputBindings, FileAccess.Read);
Collection <FunctionBinding> outputBindings = FunctionBinding.GetBindings(Config, BindingProviders, functionMetadata.OutputBindings, FileAccess.Write);
VerifyResolvedBindings(functionMetadata, inputBindings, outputBindings);
BindingMetadata triggerMetadata = functionMetadata.InputBindings.FirstOrDefault(p => p.IsTrigger);
string scriptFilePath = Path.Combine(Config.RootScriptPath, functionMetadata.ScriptFile ?? string.Empty);
functionDescriptor = null;
IFunctionInvoker invoker = null;
try
{
invoker = CreateFunctionInvoker(scriptFilePath, triggerMetadata, functionMetadata, inputBindings, outputBindings);
Collection <CustomAttributeBuilder> methodAttributes = new Collection <CustomAttributeBuilder>();
Collection <ParameterDescriptor> parameters = GetFunctionParameters(invoker, functionMetadata, triggerMetadata, methodAttributes, inputBindings, outputBindings);
functionDescriptor = new FunctionDescriptor(functionMetadata.Name, invoker, functionMetadata, parameters, methodAttributes, inputBindings, outputBindings);
return(true);
}
catch (Exception ex)
{
Host.Logger.LogTrace(ex, $"Creating function descriptor for function {functionMetadata.Name} failed");
IDisposable disposableInvoker = invoker as IDisposable;
if (disposableInvoker != null)
{
disposableInvoker.Dispose();
}
throw;
}
}
public virtual bool TryCreate(FunctionMetadata functionMetadata, out FunctionDescriptor functionDescriptor)
{
functionDescriptor = null;
if (functionMetadata.IsDisabled)
{
return(false);
}
// parse the bindings
Collection <FunctionBinding> inputBindings = FunctionBinding.GetBindings(Config, functionMetadata.InputBindings, FileAccess.Read);
Collection <FunctionBinding> outputBindings = FunctionBinding.GetBindings(Config, functionMetadata.OutputBindings, FileAccess.Write);
BindingMetadata triggerMetadata = functionMetadata.InputBindings.FirstOrDefault(p => p.IsTrigger);
BindingType triggerType = triggerMetadata.Type;
string triggerParameterName = triggerMetadata.Name;
bool triggerNameSpecified = true;
if (string.IsNullOrEmpty(triggerParameterName))
{
// default the name to simply 'input'
triggerMetadata.Name = triggerParameterName = "input";
triggerNameSpecified = false;
}
Collection <CustomAttributeBuilder> methodAttributes = new Collection <CustomAttributeBuilder>();
ParameterDescriptor triggerParameter = null;
bool omitInputParameter = false;
switch (triggerType)
{
case BindingType.QueueTrigger:
triggerParameter = ParseQueueTrigger((QueueBindingMetadata)triggerMetadata);
break;
case BindingType.BlobTrigger:
triggerParameter = ParseBlobTrigger((BlobBindingMetadata)triggerMetadata);
break;
case BindingType.ServiceBusTrigger:
triggerParameter = ParseServiceBusTrigger((ServiceBusBindingMetadata)triggerMetadata);
break;
case BindingType.TimerTrigger:
omitInputParameter = true;
triggerParameter = ParseTimerTrigger((TimerBindingMetadata)triggerMetadata, typeof(TimerInfo));
break;
case BindingType.HttpTrigger:
if (!triggerNameSpecified)
{
triggerMetadata.Name = triggerParameterName = "req";
}
triggerParameter = ParseHttpTrigger((HttpBindingMetadata)triggerMetadata, methodAttributes, typeof(HttpRequestMessage));
break;
case BindingType.ManualTrigger:
triggerParameter = ParseManualTrigger(triggerMetadata, methodAttributes);
break;
}
Collection <ParameterDescriptor> parameters = new Collection <ParameterDescriptor>();
triggerParameter.IsTrigger = true;
parameters.Add(triggerParameter);
// Add a TraceWriter for logging
parameters.Add(new ParameterDescriptor("log", typeof(TraceWriter)));
// Add an IBinder to support the binding programming model
parameters.Add(new ParameterDescriptor("binder", typeof(IBinder)));
// Add ExecutionContext to provide access to InvocationId, etc.
parameters.Add(new ParameterDescriptor("context", typeof(ExecutionContext)));
string scriptFilePath = Path.Combine(Config.RootScriptPath, functionMetadata.Source);
IFunctionInvoker invoker = CreateFunctionInvoker(scriptFilePath, triggerMetadata, functionMetadata, omitInputParameter, inputBindings, outputBindings);
functionDescriptor = new FunctionDescriptor(functionMetadata.Name, invoker, functionMetadata, parameters, methodAttributes);
return(true);
}
