Lambda

MicroStack's Lambda handler supports function management, synchronous invocation via subprocess workers, event source mappings (SQS, DynamoDB Streams, Kinesis), and API Gateway integration.

Supported Operations

• CreateFunction, DeleteFunction, GetFunction, ListFunctions, UpdateFunctionCode, UpdateFunctionConfiguration
• Invoke (synchronous)
• CreateAlias, UpdateAlias, GetAlias, ListAliases, DeleteAlias
• PublishVersion, ListVersionsByFunction
• GetFunctionConcurrency, PutFunctionConcurrency, DeleteFunctionConcurrency
• ListTags, TagResource, UntagResource
• CreateEventSourceMapping, UpdateEventSourceMapping, GetEventSourceMapping, ListEventSourceMappings, DeleteEventSourceMapping

Worker Runtimes

Lambda functions execute in subprocess workers:

• Python (python3.x runtimes) — Uses stdin/stdout JSON-line protocol
• Node.js (nodejs18.x, nodejs20.x, etc.) — Uses readline interface

Usage

var lambda = new AmazonLambdaClient(
    new BasicAWSCredentials("test", "test"),
    new AmazonLambdaConfig { ServiceURL = "http://localhost:4566" });

// Create function (provide a zip with handler code)
await lambda.CreateFunctionAsync(new CreateFunctionRequest
{
    FunctionName = "my-function",
    Runtime = Runtime.Python312,
    Handler = "index.handler",
    Role = "arn:aws:iam::000000000000:role/lambda-role",
    Code = new FunctionCode { ZipFile = zipStream },
});

// Invoke
var response = await lambda.InvokeAsync(new InvokeRequest
{
    FunctionName = "my-function",
    Payload = "{\"key\": \"value\"}",
});