implement request concurrency for gen2 functions

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+### Added
+
+- `FunctionConfig.requestConcurrency` option for GCP gen2 functions, mapped to `serviceConfig.maxInstanceRequestConcurrency`. Lets functions serve more than one request per instance (defaults to 1 currently).
+
 ## [5.2.0](https://github.com/Space48/cloud-seed/compare/v5.1.0...v5.2.0)
 
 ### Added

stacks/gcp/GcpStack.ts

@@ -167,6 +167,7 @@ export default class GcpStack extends TerraformStack {
           timeoutSeconds: func.timeout ?? 60,
           maxInstanceCount: func.maxInstances,
           minInstanceCount: func.minInstances,
+          maxInstanceRequestConcurrency: func.requestConcurrency,
           environmentVariables,
           ...(func.vpc?.network || func.vpc?.subnet
             ? {

types/runtime.ts

@@ -20,6 +20,7 @@ export type FunctionConfig = {
   };
   maxInstances?: number;
   minInstances?: number;
+  requestConcurrency?: number;
   version?: string;
 };