Add riff-raff build id to ab-testing custom resource (#15070)

Author: Jakeii

ab-testing/cdk/lib/__snapshots__/abTestingConfig.test.ts.snap

@@ -4,6 +4,12 @@ exports[`The ID5 Baton Lambda stack > matches the CODE snapshot 1`] = `
     "gu:cdk:constructs": [],
     "gu:cdk:version": "62.0.1"
   },
+  "Parameters": {
+    "BuildId": {
+      "Type": "String",
+      "Description": "The riff-raff build id, automatically generated and provided by riff-raff"
+    }
+  },
   "Resources": {
     "InvokeDictionaryDeployLambda": {
       "Type": "Custom::FastlyEdgeDictionaryDeploy",
@@ -24,7 +30,10 @@ exports[`The ID5 Baton Lambda stack > matches the CODE snapshot 1`] = `
             ]
           ]
         },
-        "ServiceTimeout": "300"
+        "ServiceTimeout": "300",
+        "BuildId": {
+          "Ref": "BuildId"
+        }
       },
       "UpdateReplacePolicy": "Delete",
       "DeletionPolicy": "Delete"
@@ -39,6 +48,12 @@ exports[`The ID5 Baton Lambda stack > matches the PROD snapshot 1`] = `
     "gu:cdk:constructs": [],
     "gu:cdk:version": "62.0.1"
   },
+  "Parameters": {
+    "BuildId": {
+      "Type": "String",
+      "Description": "The riff-raff build id, automatically generated and provided by riff-raff"
+    }
+  },
   "Resources": {
     "InvokeDictionaryDeployLambda": {
       "Type": "Custom::FastlyEdgeDictionaryDeploy",
@@ -59,7 +74,10 @@ exports[`The ID5 Baton Lambda stack > matches the PROD snapshot 1`] = `
             ]
           ]
         },
-        "ServiceTimeout": "300"
+        "ServiceTimeout": "300",
+        "BuildId": {
+          "Ref": "BuildId"
+        }
       },
       "UpdateReplacePolicy": "Delete",
       "DeletionPolicy": "Delete"

ab-testing/cdk/lib/abTestingConfig.ts

@@ -1,7 +1,7 @@
 import type { GuStackProps } from "@guardian/cdk/lib/constructs/core/stack.js";
 import { GuStack } from "@guardian/cdk/lib/constructs/core/stack.js";
 import type { App } from "aws-cdk-lib";
-import { CustomResource, Duration } from "aws-cdk-lib";
+import { CfnParameter, CustomResource, Duration } from "aws-cdk-lib";
 import { Function } from "aws-cdk-lib/aws-lambda";
 import { lambdaFunctionName } from "./deploymentLambda.ts";
 
@@ -15,11 +15,21 @@ export class AbTestingConfig extends GuStack {
 			`${lambdaFunctionName}-${this.stage}`,
 		);
 
+		const buildId = new CfnParameter(this, "BuildId", {
+			type: "String",
+			description:
+				"The riff-raff build id, automatically generated and provided by riff-raff",
+		});
+
 		// Trigger the Lambda to run upon deployment
 		new CustomResource(this, "InvokeDictionaryDeployLambda", {
 			serviceToken: lambda.functionArn,
 			serviceTimeout: Duration.minutes(5),
 			resourceType: "Custom::FastlyEdgeDictionaryDeploy",
+			properties: {
+				/** Ensures the custom resource is invoked on every deploy */
+				BuildId: buildId.valueAsString,
+			},
 		});
 	}
 }