feat: API Gateway emulator HTTP proxy so non-Lambda backends share the emulator origin - #2569
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…ends Add optional IntegrationType=Http so emulator routes can reverse-proxy to an HTTP Endpoint instead of invoking Lambda, keeping a single emulator origin for mixed local topologies. Closes aws#2568 Co-authored-by: Cursor <cursoragent@cursor.com>
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Issue #, if available:
Closes #2568
Description of changes:
Adds an optional HTTP proxy integration to the Lambda Test Tool v2 API Gateway emulator so non-Lambda HTTP backends can share the same emulator origin as Lambda routes.
Behavior
ApiGatewayRouteConfig.IntegrationType:Lambda/ omitted (default) — existing event translation → Runtime APIHttp— reverse-proxy the incoming HTTP request toEndpoint(no API Gateway JSON event wrapping)Httproutes have a non-empty absolutehttp(s)EndpointIHttpClientFactoryfor the proxy pathWhy
API Gateway supports HTTP integrations, not only Lambda. Local mixed topologies (Kestrel / containers / App Runner behind the same gateway URL the frontend already uses) need the emulator to represent that.
Tests
Unit tests for accepting valid
Httpconfigs and rejecting missing/invalid endpoints.Out of scope
RequestContext/ AspNetCoreServer null-safety — API Gateway emulator builds incomplete APIGatewayProxyRequest; AspNetCoreServer NREs on null Path / RequestContext / headers #2566 / fix: complete emulator REST APIGatewayProxyRequest and null-safe AspNetCoreServer marshalling #2567By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.