Stage variables integration

src/events/http/HttpServer.js

@@ -472,10 +472,14 @@ export default class HttpServer {
           event = request.payload || {}
         }
       } else if (integration === 'AWS_PROXY') {
+        const stageVariables = this.#serverless.service.custom
+          ? this.#serverless.service.custom.stageVariables
+          : null
         const lambdaProxyIntegrationEvent = new LambdaProxyIntegrationEvent(
           request,
           this.#serverless.service.provider.stage,
           requestPath,
+          stageVariables,
         )
 
         event = lambdaProxyIntegrationEvent.create()

src/events/http/lambda-events/LambdaProxyIntegrationEvent.js

@@ -21,11 +21,13 @@ export default class LambdaProxyIntegrationEvent {
   #path = null
   #request = null
   #stage = null
+  #stageVariables = null
 
-  constructor(request, stage, path) {
+  constructor(request, stage, path, stageVariables) {
     this.#path = path
     this.#request = request
     this.#stage = stage
+    this.#stageVariables = stageVariables
   }
 
   create() {
@@ -185,7 +187,7 @@ export default class LambdaProxyIntegrationEvent {
         stage: this.#stage,
       },
       resource: this.#path,
-      stageVariables: null,
+      stageVariables: this.#stageVariables,
     }
   }
 }

tests/old-unit/LambdaProxyIntegrationEvent.test.js

@@ -676,4 +676,26 @@ describe('LambdaProxyIntegrationEvent', () => {
       ).toEqual('customCognitoAuthenticationProvider')
     })
   })
+
+  describe('with stage variables', () => {
+    test('should assign the value to stageVariables', () => {
+      const requestBuilder = new RequestBuilder('POST', '/fn1')
+      requestBuilder.addBody({ key: 'value' })
+      requestBuilder.addHeader('content-type', 'custom/test')
+      const request = requestBuilder.toObject()
+      const path = 'path'
+      const stageVariables = 'stageVariables'
+
+      const lambdaProxyIntegrationEvent = new LambdaProxyIntegrationEvent(
+        request,
+        stage,
+        path,
+        stageVariables,
+      ).create()
+
+      expect(lambdaProxyIntegrationEvent.stageVariables).toEqual(
+        'stageVariables',
+      )
+    })
+  })
 })