static async Task Main(string[] args)
{
var extensionName = (1 == args.Length)
? args[0]
: Assembly.GetEntryAssembly()?.GetName()?.Name;
if (string.IsNullOrWhiteSpace(extensionName))
{
throw new InvalidOperationException("Failed to determine extension name!");
}
using var client = new ExtensionClient(extensionName);
// ProcessEvents will loop internally until SHUTDOWN event is received
await client.ProcessEvents(
// this expression will be called immediately after successful extension registration with Lambda Extension API
onInit : async id => {
Console.WriteLine($"[{extensionName}] Registered extension with id = {id}");
await Task.CompletedTask; // useless await, so that compiler doesn't report warnings
},
// this will be called every time Lambda is invoked
onInvoke : async payload =>
{
Console.WriteLine($"[{extensionName}] Handling invoke from extension: {payload}");
await Task.CompletedTask; // useless await, so that compiler doesn't report warnings
},
// this will be called just once - after receiving SHUTDOWN event and before exitting the loop
onShutdown : payload => // this is an example of lambda expression implementation without async keyword
{
Console.WriteLine($"[{extensionName}] Shutting down extension: {payload}");
return(Task.CompletedTask);
});
}
static async Task Main(string[] args)
{
if (1 != args.Length || string.IsNullOrWhiteSpace(args[0]))
{
throw new ArgumentException("There must be a single non-empty extension name parameter provided!");
}
var extensionName = args[0];
using var client = new ExtensionClient(extensionName);
// ProcessEvents will loop internally until SHUTDOWN event is received
await client.ProcessEvents(
// this expression will be called immediately after successful extension registration with Lambda Extension API
onInit : async id => {
Console.WriteLine($"[{extensionName}] Registered extension with id = {id}");
await Task.CompletedTask; // useless await, so that compiler doesn't report warnings
},
// this will be called every time Lambda is invoked
onInvoke : async payload =>
{
Console.WriteLine($"[{extensionName}] Handling invoke from extension: {payload}");
await Task.CompletedTask; // useless await, so that compiler doesn't report warnings
},
// this will be called just once - after receiving SHUTDOWN event and before exitting the loop
onShutdown : payload => // this is an example of lambda expression implementation without async keyword
{
Console.WriteLine($"[{extensionName}] Shutting down extension: {payload}");
return(Task.CompletedTask);
});
}
