allow Expressions in the top-level configuration of v1 functions (#1249)

Author: Berlioz

src/v1/cloud-functions.ts

@@ -26,6 +26,7 @@ import { DeploymentOptions } from "./function-configuration";
 export { Request, Response };
 import { convertIfPresent, copyIfPresent } from "../common/encoding";
 import { ManifestEndpoint, ManifestRequiredAPI } from "../runtime/manifest";
+import { Expression } from "../params";
 
 export { Change } from "../common/change";
 
@@ -475,17 +476,26 @@ export function optionsToEndpoint(options: DeploymentOptions): ManifestEndpoint
     endpoint.vpc = { connector: options.vpcConnector };
     convertIfPresent(endpoint.vpc, options, "egressSettings", "vpcConnectorEgressSettings");
   }
-  convertIfPresent(endpoint, options, "availableMemoryMb", "memory", (mem) => {
-    const memoryLookup = {
-      "128MB": 128,
-      "256MB": 256,
-      "512MB": 512,
-      "1GB": 1024,
-      "2GB": 2048,
-      "4GB": 4096,
-      "8GB": 8192,
-    };
-    return memoryLookup[mem];
-  });
+  convertIfPresent(
+    endpoint,
+    options,
+    "availableMemoryMb",
+    "memory",
+    (mem: string | Expression<number>) => {
+      if (typeof mem === "string") {
+        const memoryLookup = {
+          "128MB": 128,
+          "256MB": 256,
+          "512MB": 512,
+          "1GB": 1024,
+          "2GB": 2048,
+          "4GB": 4096,
+          "8GB": 8192,
+        };
+        return memoryLookup[mem];
+      }
+      return mem;
+    }
+  );
   return endpoint;
 }

src/v1/function-builder.ts

@@ -50,7 +50,11 @@ import * as testLab from "./providers/testLab";
  * @throws { Error } Memory and TimeoutSeconds values must be valid.
  */
 function assertRuntimeOptionsValid(runtimeOptions: RuntimeOptions): boolean {
-  if (runtimeOptions.memory && !VALID_MEMORY_OPTIONS.includes(runtimeOptions.memory)) {
+  if (
+    runtimeOptions.memory &&
+    typeof runtimeOptions.memory === "string" &&
+    !VALID_MEMORY_OPTIONS.includes(runtimeOptions.memory)
+  ) {
     throw new Error(
       `The only valid memory allocation values are: ${VALID_MEMORY_OPTIONS.join(", ")}`
     );

src/v1/function-configuration.ts

@@ -174,23 +174,23 @@ export interface RuntimeOptions {
   /**
    * Amount of memory to allocate to the function.
    */
-  memory?: typeof VALID_MEMORY_OPTIONS[number];
+  memory?: typeof VALID_MEMORY_OPTIONS[number] | Expression<number>;
   /**
    * Timeout for the function in seconds, possible values are 0 to 540.
    */
-  timeoutSeconds?: number;
+  timeoutSeconds?: number | Expression<number>;
 
   /**
    * Min number of actual instances to be running at a given time.
    * Instances will be billed for memory allocation and 10% of CPU allocation
    * while idle.
    */
-  minInstances?: number;
+  minInstances?: number | Expression<number>;
 
   /**
    * Max number of actual instances allowed to be running in parallel.
    */
-  maxInstances?: number;
+  maxInstances?: number | Expression<number>;
 
   /**
    * Connect cloud function to specified VPC connector.