public static bool TryGetStartupSettings(
string functionDirectory,
out DasyncFunctionStartupSettings settings)
{
var dasyncStartupFilePath = Path.Combine(functionDirectory, "dasync.startup.json");
if (!File.Exists(dasyncStartupFilePath))
{
settings = null;
return(false);
}
var startupJson = File.ReadAllText(dasyncStartupFilePath);
if (string.IsNullOrEmpty(startupJson))
{
settings = null;
return(false);
}
settings = JsonConvert.DeserializeObject <DasyncFunctionStartupSettings>(startupJson);
if (!string.IsNullOrEmpty(settings.StartupFile))
{
settings.StartupFile = Path.GetFullPath(Path.Combine(functionDirectory, settings.StartupFile));
}
return(true);
}
private static StartupInfo LoadStartupType(DasyncFunctionStartupSettings settings)
{
if (string.IsNullOrEmpty(settings.StartupFile))
{
return(null);
}
var startupAssembly = LoadAssembly(settings.StartupFile);
var result = new StartupInfo
{
StartupAssembly = startupAssembly
};
return(result);
}
private static async Task <InitializedRuntime> InitializeRuntimeAsync(
DasyncFunctionStartupSettings startupSettings,
FunctionExecutionContext context,
ILogger logger)
{
var startupInfo = LoadStartupType(startupSettings);
var engineIocContainer = TryCreateEngineIocContainer(startupInfo);
if (engineIocContainer == null)
{
engineIocContainer = CreateDefaultEngineIocContainer(
context.FunctionDirectory,
Path.Combine(context.FunctionDirectory, "..", "bin"));
}
if (startupInfo?.StartupAssembly != null)
{
var appIocContainerProviderHolder = engineIocContainer
.Resolve <AppIocContainerProviderProxy.Holder>();
appIocContainerProviderHolder.Provider =
new LazyAppIocContainerProvider(() =>
{
var converters = engineIocContainer.Resolve <ContainerConverters>().Converters;
return(TryCreateAppIocContainer(startupInfo.StartupAssembly, converters));
});
}
var settings = engineIocContainer.Resolve <AzureFunctionsFabricSettings>();
settings.FunctionsDirectory = Path.GetFullPath(Path.Combine(context.FunctionDirectory, ".."));
var bootstrapper = engineIocContainer.Resolve <Bootstrapper>();
var bootstrapResult = await bootstrapper.BootstrapAsync(CancellationToken.None);
return(new InitializedRuntime
{
EngineIocContainer = engineIocContainer,
Fabric = (IAzureFunctionsFabric)bootstrapResult.Fabric
});
}
